40
69. PRC – Open session Andrea Parenti 1 Andrea Parenti (DESY) on behalf of the ZEUS Collaboration

Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

  • Upload
    others

  • View
    0

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 1

���� ����� �� ��

Andrea Parenti (DESY)

on behalf of the ZEUS Collaboration

� ������� �����

� �� �� ���������

� ���������

Page 2: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 2

����� ���������

� �� ������� ���� ��

� � �������� � ��� � ��!� �" ��#� $ !�%%�&

� �� ���� '�'�� �('����) ��� ���&&&

� &&& *�� ��� ���� '��%��� ���� � )��� �)

� ������� �+' ,� !-� .)�� �� ����/���� ���0

� #�'��1��� .���'�2��0

� ���� ��������) �� ��� ���*������� �%%���� *�� �%%����� %������'�2�� �������

Page 3: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 3

��� ����� ���� ��� ��

� 3��������� �% *���� '��)������ �� !-� ��) ��

* �(�������� �� 456�

.!5�7�� � �80

� -�����9��:�� ��� ������ �� ,� !-� �� �5;< ��) � ���'����� �%���

=� �����

=��) �-����� :�� ��������� .!5�7�� � $�0

� �����) 3������� �'����� �� )��' �������� ���������� �� �5;<.!5�7� "���"0

� 3��������� �% !+ ��) L�'��)������ �� !-� �� �5;< .�� )����������0

� 3��������� �% ������� ������) ������� )��' �������� ������������ ������ 2��� � �������)����� '������) '������ *��� �� �5;<.�%��� ���)���0

� -�����9� )�:�� ��� ������ �� ������� ������� )��' ����������������� �� �5;< .�%��� ���)���0

Page 4: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 4

��� ����������� ����� ���� ��� ��

� ,������ ������� ��� ������ �� ���� (

� �5;�35;�#5; ��� ������ �� ���� ��) ��2 ��

� ��+456�� ���*���) �5;�35;�#5; ��� ������ ��) �#

� ��+456�� ��! %�� �����)��� �5;�35;�#5; )���

� ��+456�� ��! %�� �����)��� ����� )���

� -�����9� :�� �� ,� !-�

� -�����9� :�� �� ���

� !+ �� !-� ��) ��

� >���� �� !-� %��� ������9� ����)�� 9������

Page 5: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 5

�� ��� � ����� ���

� ?� @ 5&�& ��� )������� ���������� �� a����������

� =���� ����� ���� *����� ��)�����)

� %��� ��2 a��

$ ����������� �% >������������ * A& 3������ .�� *� '�*�&0

� 2��)�2 ���9������ �B → &8B

� =���� ������ �&CB → �&�B

Page 6: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 6

� ��� ���� ������� �

� 3���� ����� ������������ ������� %�� )������� �&

� #�� ��� 2� '��)���) D�&8 *������ �9���E

� ?� 2��� ���) � ������'��)������ ��� �� � � &

Page 7: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 7

���� ��������� �

� �����) �� ��� ��)�� .�� '�'�� �� �;�0

� ������ ���'�� %�����

� 9�������F�) 3� ��) ���� � �%�2���

� 3� ���������� �� ��� ���)

� )�)�����) 456� ���'����� �''��� ��) ��/� ��

� !��� ����) ��� �� -=

� ��9������� �� *� )�%���)

� ����)��� � ������9�E

� ?�� � ���)�)�

� ?��� ������� 2��� *� �9����*��@

Page 8: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 8

���� ����������

� �� �� ����)������

� 3& =������ .��0 � 5& =�� .����F�0 → <& ����� .!5�70� >&;����� .3�-0

� �'��'����

� =& ��� .!5�70 → <& #�9 .=�� <9�90

� �����*������� �������� �%��� � �� ���� ��)�� )������

Page 9: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 9

���� !� �"���#$ ���% �� �&� '()(

-�����9��

���������

,� �� �����(

,�/�� ��) �!� %��

���*���) �#

��! %�� 2��� ��2 ����� )���

��! %�� 2��� ����� )���

��#�

-���& *���� �� !-�

-���& *���� �� ���

����� ���� �� !-�

-������� G/� �������

��!�G�� 2��� �����

=��) �-������ .)�0:��

�� ,� !-�

=���� �*:��

G�� �� ���

�����) �������

����'� '�����

!�%%��������

!�%%�����9� �!�

G/� �� ���� �

5?/�������

-�����) ��'���

3�������'���

#� ��) �-

�� � ��� * � � � "���� �"�� � � ��� ��� ��� � ��� #�� � ����

Page 10: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 10

Tevatron Jet Cross Sections

2.0 < |yjet| < 2.4 (x 10-9)

1.6 < |yjet| < 2.0 (x 10-6)

1.2 < |yjet| < 1.6 (x 10-3)

0.8 < |yjet| < 1.2

0.4 < |yjet| < 0.8 (x 103)

|yjet| < 0.4 (x 106)

Cone R=0.7 - fastNLO

HERAPDF1.0

D0 RunII

PT jet [Gev/c]

d2 σ/dy

jet dp

T je

t [nb/

(Gev

/c)]

10-15

10-12

10-9

10-6

10-3

1

10 3

10 6

10 8

0 100 200 300 400 500 600 700

=�� ���*���) ,� ��) �� �5;< )��� ��9� *��� ��) � ��� ��� ��'�� %����� �(�������� �% ��� �5;<�!��& &

+����,)-(

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxu

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxd

HERAPDF1.0 exp. uncert. model uncert. param uncert.

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

10

20

30

40

50

sea xusea xdsea xssea xcsea xb

2 =10000 GeV2QxS

0

10

20

30

40

50

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

10

20

30

40

50

0

20

40

60

80

1002 =10000 GeV2Qxg

0

20

40

60

80

100

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

20

40

60

80

100

H1 and ZEUS

HERAregion

!����������� �% ���9���� ������ �% ��� �!�JHEP01(2010)109

Page 11: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 11

�� �� ���� � �� ����./

ZEUS-prel-10-007�� D �H ��A�� �� �� ��)

������:�� �9���������)&

������9�� �� ��������( ������&

-�'��� �� ��� �!� ������ *� �����) ���&

Page 12: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 12

+���.0' �� *� � �!� #�������� ����� �� �+' )���� #I�$� '*��&

� J �� J C ��A�

������� ��'�� �� ��! %�� ���� (

ZEUS-pub-10-004 eP-1 -0.5 0 0.5 1

[p

b]

CC

σ

0

20

40

60

80

100

120p Scattering±HERA Charged Current e

2 > 400 GeV2Q

y < 0.9

Xν →p +e

Xν →p -e

HERAPDF 1.0

H1 HERA IH1 HERA II (prel.)ZEUS 98-06

H1 HERA IH1 HERA II (prel.)ZEUS 06-07ZEUS HERA I

eP-1 -0.5 0 0.5 1

[p

b]

CC

σ

0

20

40

60

80

100

120 0.5

1

1.5

0.5

1

1.5

.5

1

.5

.5

1

.5

.5

1

.5

0.2

0.4

0.6

0.8

.2

.4

.6

.8

.2

.4

.6

.8

-210 -1100

0.1

0.2

-210 -110

0

.1

.2p+ZEUS CC e

=0)e

, P-1(132 pb

-210 -1100

.1

.2SM (ZEUS-JETS)

SM (HERAPDF1.0)SM (CTEQ6.6)SM (MSTW08)

2 = 280 GeV2Q 2 = 530 GeV2Q 2 = 950 GeV2Q

2 = 1700 GeV2Q 2 = 3000 GeV2Q 2 = 5300 GeV2Q

2 = 9500 GeV2Q 2 = 17000 GeV2Q 2 = 30000 GeV2Q

x

σ~

ZEUSZEUS

x(d+s)2(1-y))c+ux(

Page 13: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 13

(cm)vtxz-100 -80 -60 -40 -20 0 20 40 60 80 100

Eve

nts

1

10

210

310

410

510

(cm)vtxz-100 -80 -60 -40 -20 0 20 40 60 80 100

Eve

nts

1

10

210

310

410

510ZEUS (prel.)

MC DIS+BGMC BG

Nominal

Satellite = 318 GeVs-1L = 44.5 pb

ZEUS

ZEUS

0.5

1.0

1.5

2.0 2 = 5 GeV2Q

5

0

5

0 2 = 7 GeV2Q

y0.2 0.4 0.6 0.8

5

0

5

02 = 9 GeV2Q

y0.2 0.4 0.6 0.8

0.5

1.0

1.5

2.02 = 12 GeV2Q

y0.2 0.4 0.6 0.8

.5

.0

.5

.0 2 = 17 GeV2Q

ZEUS (prel.)

ZEUS (prel.) sat. vtx

ZEUS-JETS

-1 = 318 GeV, L =44.5 pbs

+���1 ��#��� ��# � � ������ �� ���� � �� ���� �

�5;< ,� ��� ������ %��� )��� ��������) �� 5'I"� � H8H ��) �C ��A %��

��� �#)������������ ��) �� �!� %��&

456� �(���) �� �� ������ %�� ���

�������� )�2� �� H ��A� %�� �5;��� ���� ��%��) 9����( )���&

ZEUS-prel-10-006

Page 14: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 14

&������� 2�� �� �� �&�

&������� 2��1 �34(( �".)

K�������� ����� �� D ��H ��A�&

���) ��������� 2��� ��! �� ,#L&

ZEUS-prel-10-002

ZEUS

10-4

10-3

10-2

10-1

1 ZEUS (prel.) 300 pb-1

NLO hadr Z0⊗ ⊗

EjetT,B > 8 GeV

-2 < ηB jet < 1.5

|cos γh| < 0.65

jet energy scale uncertainty

theoretical uncertainty

dσ/

dQ2 (

pb/G

eV2 )

-0.4

-0.2

0

0.2

0.4

102

103

104

Q2 (GeV2)

rel.

diff

. to

NL

O

Page 15: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 15

&������� #�2�� �� �� �&�

&������� #�2��1 �3456 �".)

K�������� ����� �� D ��H ��A�&

���) ��������� 2��� ��! �� ,#L&

)2 (

pb/G

eV2

/dQ

σd

−410

−310

−210

−110

)−1ZEUS (374 pb

0Z C⊗hadr C⊗NLO

2jetT,BE+2=Q

R2μ

2=Q2R

μ2jet

T,BE=2R

μ

)2 (GeV2Q1000 10000

rel.

diff

. to

NL

O−0.2

0

0.2 jet energy scale uncertainty

NLO uncertainty

ZEUS-pub-10-005

Page 16: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 16

&������� 2�� �� �+�

0' 7 ) 8�9' 1 (-' 7 � 7 (-:;

�� ���� �� 2�� �����

<

2��= )5 8�91 .) 7 2�� 7 '-;�

0.12

0.13

0.14

0.15

0.16

0.17

20 30 40 50 60 70

Ejet

T (GeV)

α s

ZEUSZEUS (prel.) 189 pb-1

corr. uncert.th. uncert.QCD

a�(������) %��� ��� )�'��)���� �% ���

��� ������ �� 5=& G�� �� ��� ��9� ���

��� '����� a���������� �� 456�� ��2

�(���)�) �� �5;<--

=�� �% ��� ������� �% a&

ZEUS-prel-10-003

ZEUS

10-3

10-2

10-1

1

10

10 2ZEUS (prel.) 189 pb-1

NLO (GRV-HO)

-1 < η jet < 2.5

Q2 < 1 GeV2

0.2 < y < 0.85

jet energy scale uncertainty

theoretical uncertainty

dσ/

dEje

t T

(pb/

GeV

)

-1

-0.5

0

0.5

20 30 40 50 60 70 80 90

Ejet

T (GeV)

rel.

diff

. to

NL

O

Page 17: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 17

������ *� � �+� � �&�

;������ �% ��� ���'���� �������2��� ��� ���� ����) %��� �����2 �� ��� ���� �� ������&

=2� ��2 '����� a���������� %���

!-� ��) ��� �� ��������� 2��� ���2���) �9�����&

10 20 30 40 50 60 70

ZEUS (prel.)

NC DIS 300 pb-1

corr. uncert. th. uncert.

photoproduction 189 pb-1

corr. uncert. th. uncert.

QCD

Ejet

T (GeV)

α s

ZEUS

0.12

0.14

0.16

0.18

0.20

0.22

th. uncert.

exp. uncert.

World average 2009

(S. Bethke, Eur Phys J C64 (2009) 689)

HERA average 2004

(C. Glasman, hep-ex/0506035)

HERA combined 2007

(H1prelim-07-132/ZEUS-prel-07-025)

Inclusive-jet cross sections in γp

ZEUS (Phys Lett B 560 (2003) 7)

Inclusive jet cross sections in NC DIS

ZEUS (Phys Lett B 649 (2007) 12)

Inclusive-jet cross sections in NC DIS (anti-kT)

ZEUS (DESY-10-034)

Inclusive-jet cross sections in NC DIS (SIScone)

ZEUS (DESY-10-034)

Inclusive-jet cross sections in NC DIS

ZEUS-prel-10-002

Inclusive-jet cross sections in γp

ZEUS-prel-10-003

0.1 0.12 0.14αs(MZ)

Page 18: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 18

>�� �� �+�? � � ������"����� �**���

���� �����'��

����������� .��25=

:��0� ��'������

%�� ��� #��

=�� ��� ��� *�

��%������) * ��� :������������ ��2)�9���'���� *����

����) %�� ��� #��.�����

=� �-�����&&&0

ZEUS-prel-10-003

ZEUS

0

200

400

600

800

1000ZEUS (prel.) 189 pb-1

NLO: p/γ PDFs

ZEUS-S/GRV-HO

ZEUS-S/AFG04

MSTW08/GRV-HO

Ejet

T > 17 GeV

Q2 < 1 GeV2

0.2 < y < 0.85

jet energy scale uncertainty

theoretical uncertainty

dσ/

dηje

t (pb

)

-1

-0.5

0

0.5

-1 -0.5 0 0.5 1 1.5 2 2.5 ηjet

rel.

diff

. to

NL

O

ZEUS

0

200

400

600

800

1000ZEUS (prel.) 189 pb-1

NLO

NLO NP (psec

T,min=1 GeV)⊗NLO NP (p

sec

T,min=1.5 GeV)⊗NLO NP (p

sec

T,min=2 GeV)⊗

Ejet

T > 17 GeV

Q2 < 1 GeV2

0.2 < y < 0.85

jet energy scale uncertainty

dσ/

dηje

t (pb

)

-1

-0.5

0

0.5

-1 -0.5 0 0.5 1 1.5 2 2.5 ηjet

rel.

diff

. to

NL

O

Page 19: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 19

����.%<

��# �&�� �� 2�� ��� �����

;����� � �% ������9� :�� �� !-�

.=��) ��������� 0

,��� ��� � #���1

��� ����� * � �+�

!��� 9�� 2��� )����*�) * ,#L ��) ��� ��� ���������&

������� '������� .������ 2��� %�� �-�����0

;���� �9������) �' �� ��)�� a$

DESY-10-034

10-4

10-3

10-2

10-1

1

10

10 2

EjetT,B > 8 GeV

-2 < ηB jet < 1.5

|cos γh| < 0.65

kT (x 100)

anti-kT (x 10)

SIScone

dσ/

dQ2 (

pb/G

eV2 )

0.8

0.9

1

1.1

102

103

104

kT (+0.05)

anti-kT

SIScone

Q2 (GeV2)

hadr

onis

atio

n co

rrec

tion

Page 20: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 20

@����� �� �&�

>���� �����������) %��� :��

2��� ����)�� 9������&

ZEUS-prel-10-006 ZEUS-prel-10-004

H& ��A� J �� J � & ��A�� & � J J &85=.G��0 D H& ��A� ��&C J .G��0 J� �&�

#I$H� '*��

)XY

(Lσ / XYL-20 -15 -10 -5 0 5 10 15 20

En

trie

s

10

210

310

410

510

)XY

(Lσ / XYL-20 -15 -10 -5 0 5 10 15 20

En

trie

s

10

210

310

410

510-1ZEUS (prel.) 354 pb

Monte Carlo

LF

CharmBeauty

ZEUS

A(((( "����� ����� ������"��9��� ���� ������ �� ���� ��

��# ����*������

Page 21: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 21

@����� �� �&�

ZEUS-prel-10-004

H& ��A� J �� J � & ��A�� & � J J &85=.G��0 D H& ��A� ��&C J .G��0 J� �&� #I$H� '*��

���� ���� "� ��# * � ���

�/������ � * ,'

"

Page 22: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 22

�! �� �&�

!+ �����������) ���� ��%����� ��%��������& #I$�$ '*��&

H J ��

!<J � ��A�

& � J !<J &8

�&H J '=.!+0J �H ��A

M .!�+0M J �&C

ZEUS-prel-10-006 ZEUS-prel-10-005

B 5'(( �! ����� ������"��

�������� ���'���*�� �� !N �� �5;<-

)2 (GeV2Q10 210 310

)2 (

nb

/GeV

2/d

d

−410

−310

−210

−110

1

−1 (prel.) 323 pb+ZEUS D−1 133.6 pb+ZEUS D

HVQDIS

ZEUS

) (GeV)+(DT

p2 4 6 8 10 12 14

) (n

b/G

eV)

+(D

T/d

pσd

−210

−110

1

−1 (prel.) 323 pb+ZEUS D−1 133.6 pb+ZEUS D

HVQDIS

ZEUS

Page 23: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 23

��� ���� ,'

��

������9�� �� ��� �����&

,�2 !+ )��� ��) �� �(�������

�2��� ���) '�������&

���� ����� ��� ���'���)2��� )��� %��� �� ��)456� ���*���)&

,�2 )��� 2��� ���' ����'��9� ��� '������� �%��� ���*�������&

_

ZEUS-prel-10-005, H1prelim-09-171, ZEUS-prel-09-015

0

0.1

0.2

0.3

0

0.2

0.4

0

0.2

0.4

10-4

10-3

10-2

0

0.1

0.2

10-4

10-3

10-2

ZEUS

Fcc 2

Q2 = 2 GeV2 Q2 = 4 GeV2 Q2 = 6.5 GeV2

Q2 = 12 GeV2 Q2 = 20 GeV2 Q2 = 35 GeV2

Q2 = 60 GeV2 Q2 = 120 GeV2 Q2 = 200 GeV2

xQ2 = 400 GeV2 Q2 = 1000 GeV2

x

HERA comb (prel.)ZEUS D+(prel.)323 pb-1

HERAPDF1.0

10-4

10-3

10-2

Page 24: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 24

� ����� �

� #�9�� � ����9� '� �� ���� �

� '�*������ ��� '�'��

� ��� ��2 '��������� �����

� %��� ��������) �� ���*�������

� %������� %�� ���'�2��� *�� ����� '��������

� ����� ����%����� ��������� ��'��9�����

� �& �& ���� .�&CB → �&�B ��'��� �� a0

� ���� %�� )��� '����9����� �� ���)

� ?��� ������� 2��� *� �9����*��@

Page 25: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

EXO meetingMonica Turcato 25

@��%��

Page 26: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 26

0�� �� +��

DGLAPHERA

TEVATRON

LHC@14TeV

M=̂Q

x1,2=̂M

14 TeVe±y

�� ��#� ������ ����� � 0�� *��

,� ��) �� ��� ������ ���� ��'�� �� ��!

�%�� �5;<�!��&

5(������ �� ��� ������� ��) ( ������

5(������ �� ��� ��2��� ������ �� ����� �

���� �% !�#<� �9�������

���� �% ��! '��)������ %�� �#

�-������� �% :�� )��� ��) ��# )��������9�� �� ��� �����

Page 27: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 27

+����,)-(

=�� ���*���) ,� ��) �� �5;< )��� ��9� *��� ��) � ��� ��� ��'�� %����� �(�������� �% ��� �5;<�!��& &

JHEP01(2010)109 ������ ������� * ��� �� � �

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxu

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxd

HERAPDF1.0 exp. uncert. model uncert. param uncert.

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

10

20

30

40

50

sea xusea xdsea xssea xcsea xb

2 =10000 GeV2QxS

0

10

20

30

40

50

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

10

20

30

40

50

0

20

40

60

80

1002 =10000 GeV2Qxg

0

20

40

60

80

100

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

20

40

60

80

100

H1 and ZEUS

0

0.5

1

1.5

2

W+

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.5

1

1.5

2

W-

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4-0.1

-0.050

0.050.1

0

0.5

1

1.5

2

0

0.1

0.2

0.3

0.4

Z

0

0.1

0.2

0.3

0.4

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0

0.1

0.2

0.3

0.4

0.5

0.6

WA

0

0.1

0.2

0.3

0.4

0.5

0.6

-0.1-0.05

00.05

0.1

-4-0.1

-0.050

0.050.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.1

0.15

ZW

R0.1

0.15

W and Z rapidity dis

Z�������� �% OHB�� ��� ���������'�)�� ������%�� ? ��) 4

0

0.5

1

1.5

2

W+

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.5

1

1.5

2

W-

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.1

0.2

0.3

0.4

Z

0

0.1

0.2

0.3

0.4

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0

0.1

0.2

0.3

0.4

0.5

0.6

WA

0

0.1

0.2

0.3

0.4

0.5

0.6

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0.5

0.6

0

0.05

0.1

0.15

ZW

R

0

0.05

0.1

0.15

HERAPDF1.0

exp. uncert.

model uncert.

param uncert.

W and Z rapidity distributions

W+W −

Page 28: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 28

=�� ���*���) ,� ��) �� �5;< )��� ��9� *��� ��) � ��� ��� ��'�� %����� �(�������� �% ��� �5;<�!��& &

+����,)-(

JHEP01(2010)109

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxu

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

0.2

0.4

0.6

0.8

12 =10000 GeV2Q

vxd

HERAPDF1.0 exp. uncert. model uncert. param uncert.

0

0.2

0.4

0.6

0.8

1

-0.2

0

0.2

-410 -310 -210 -110 1x-0.2

0

0.2

-0.2

0

0.20

0.2

0.4

0.6

0.8

1

0

10

20

30

40

50

sea xusea xdsea xssea xcsea xb

2 =10000 GeV2QxS

0

10

20

30

40

50

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

10

20

30

40

50

0

20

40

60

80

1002 =10000 GeV2Qxg

0

20

40

60

80

100

-0.2

0

0.2

-410 -310 -210 -110 1x

-0.2

0

0.2

-0.2

0

0.20

20

40

60

80

100

H1 and ZEUS

������ ������� * ��� �� � �

0

0.5

1

1.5

2

W+

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.5

1

1.5

2

W-

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.1

0.2

0.3

0.4

Z

0

0.1

0.2

0.3

0.4

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0

0.1

0.2

0.3

0.4

0.5

0.6

WA

0

0.1

0.2

0.3

0.4

0.5

0.6

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0.5

0.6

0

0.05

0.1

0.15

ZW

R

0

0.05

0.1

0.15

HERAPDF1.0

exp. uncert.

model uncert.

param uncert.

W and Z rapidity distributions

W+W −

0

0.5

1

1.5

2

W+

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.5

1

1.5

2

0

0.5

1

1.5

2

W-

0

0.5

1

1.5

2

-0.1-0.05

00.05

0.1

-4 -3 -2-0.1

-0.050

0.050.1

0

0.5

1

1.5

2

0

0.1

0.2

0.3

0.4

Z

0

0.1

0.2

0.3

0.4

-0.1-0.05

00.05

0.1

-4 -3 -2 -1 0 1 2 3 4y

-0.1-0.05

00.05

0.10

0.1

0.2

0.3

0.4

0

0.1

0.2

0.3

0.4

0.5

0.6

WA

0

0.1

0.2

0.3

0.4

0.5

0.6

-0.1-0.05

00.05

0.1

-4 -3 -2-0.1

-0.050

0.050.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.1

0.15Z

WR

0.1

0.15

H

ex

W and Z rapidity distribu

Z�������� �% OHB�� ��� ���������'�)�� ������%�� ? ��) 4HERA

region

Tevatron Jet Cross Sections

2.0 < |yjet| < 2.4 (x 10-9)

1.6 < |yjet| < 2.0 (x 10-6)

1.2 < |yjet| < 1.6 (x 10-3)

0.8 < |yjet| < 1.2

0.4 < |yjet| < 0.8 (x 103)

|yjet| < 0.4 (x 106)

Cone R=0.7 - fastNLO

HERAPDF1.0

D0 RunII

PT jet [Gev/c]

d2 σ/dy

jet dp

T je

t [nb/

(Gev

/c)]

10-15

10-12

10-9

10-6

10-3

1

10 3

10 6

10 8

0 100 200 300 400 500 600 700

�5;<�!��& �*�� �� )����*� �����( :�� '��)������

Page 29: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 29

>�� �� ���� �

��������� ��� �% '�����*���9� ��!

������9�� �� ��� ����� �� ��� '������ '����� ��'�� �� ��!%��&

5(����� a2��� ���� '�������� ���� ��� ���� )�'��)����

2����� � ����� �('������� ��) �� )�%%����� ������&

Page 30: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 30

����� ��# "����� �� #���� �

��������� ��� �% '�����*���9� ��!� �����9�� �� ��� ����� �� ���'�����&

3��������� '��*��� .��� '=� ��0

���� �% ��� ��! %�� )�'������� �� ��� %��9��� ���������

Page 31: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 31

��**������� ��, *��

!�%%�����9� �!� �(������) %��� ������9���) :�� ��� ������ �� )�%%�����9�!-�&

see Matthew Wing [250]

Nucl. Phys. B831 (2010) 1

���) )����'���� �% ��� )��� �*�����)��� %�� )��� ��� �����)�) �� ��� %��

.���� )�:�� �� ���� ��� �� ��� ��2 (�

������0& ,� %����������� *������&

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.042 = 6 GeV2Q

ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.04 ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

light

c

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.042 = 20 GeV2Q

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.04

light

c

b

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.042 = 60 GeV2Q

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.04

light

cb

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.042 = 200 GeV2Q

z0 0.2 0.4 0.6 0.8 1

qzf

0

0.01

0.02

0.03

0.04

light

cb

ZEUS

z0 0.2 0.4 0.6 0.8 1

gzf

0

0.2

0.4

0.6

2 = 6 GeV2QZEUS DPDF SJexp. uncertaintyZEUS DPDF C

z0 0.2 0.4 0.6 0.8 1

gzf

0

0.2

0.4

0.6ZEUS DPDF SJexp. uncertaintyZEUS DPDF C

z0 0.2 0.4 0.6 0.8 1

gzf

0

0.2

0.4

0.6

2 = 20 GeV2Q

z0 0.2 0.4 0.6 0.8 1

gzf

0

0.2

0.4

0.6

0.4 0.6 0.8 1

(p

b)

ob

/dx

σd

100

200

300

400

500 (a)p 99-00γZEUS diff dijet energy scale uncertaintyZEUS DPDF SJDPDF exp. uncertainty

0.81×H1 Fit 2007 Jets

ZEUS

obsγx

0.4 0.6 0.8 1

0

0.5renorm. scale dependence

Page 32: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 32

>�� ��� �����

G�� ������������� ����� �� :�� ���������&

G�� ��������� ����) ��� *� �����9� �� �%� '������������� .��%����) �%�0 ��) ��������� '�������

'������� .��������� �%�0&

arXiv0802.1189

<���# � #��� * � ���

*��� ���� �� ����---

,�2 )�9���'�����

�����=.���������

������ �� �F �0

�-��L,5.�������� �F 80*��� �%� �� ���

��)��

=.������ �� ��&0

���� ��������� ������� ��) �� ��)����

��)��� �������� ��� ��� �%� �� �����)�� �� ��!&

5(��'�� ��� �� ��� ��� 3� �9����

<����=� ������ ��

=*�� ��9� :�� �%

������� ��'�� � �-����� .���) �&�& %��)������� ����*������0&

Page 33: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 33

���� ,'

"

������ ���������� *��) ���9��� 2��� ���� ��) :��

�������� �% ��� )��� � ������)

?��� )���������� ��'��9�) ����:�� %��� ����)�� 9������&

���� ��������� *��2��� ���9����� ����� '��)������

see Philipp Roloff [18]

ZEUS-pub-10-002

ZEUS

0

0.025

0.05

0.075

0.1

0.125

0.15

0.175

0.2

0.225

10 102

103

Q2 (GeV2)

F2

b

b_ + 0

.03i

x=0.00013 i=7

x=0.0002 i=6

x=0.0005 i=5

x=0.0013 i=4

x=0.002 i=3

x=0.005 i=2

x=0.013 i=1

x=0.032 i=0

ZEUS 114 pb-1, this pub.

ZEUS 126 pb-1

H1

ZEUS-S+HVQDIS

GJR08 NLO

ABKM NNLO

MSTW08 NLO

MSTW08 NNLO

CTEQ6.6 NLO

Page 34: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 34

0���% ��#��1 � ����� ��������� �

���� 456� ,� ������� ��) �� ��9������� 1��� ��)��� �- ��)��� ���9 ��'��1���� ����� �(��� )�������& ������ ����� �(������)&

see Ilias Panagoulias [75]

ZEUS-prel-09-013

Q2 (GeV2)

N/N

exp

Quark Radius Limits (prel.)

ZEUSZEUS (prel.) e±p 0.44 fb-1

Rq2 = (0.63 ⋅10-16cm)2

Rq2 = -(0.57 ⋅10-16cm)2

1

10

103

104

0.9

0.95

1

1.05

1.1

103

104

Limit on the quark radius: R < 0.63 C )(.4 *� D A;E ��

10 10

7

5

3

1

0

]2 [

pb

/GeV

2/d

Qσd

-710

-510

-310

-110

10

]2 [GeV2Q310 410

p CC (prel.)+H1 e

p CC (prel.)-H1 e

p CC 06-07 +ZEUS e

p CC 04-06-ZEUS e

p CC (HERAPDF 1.0)+SM e

p CC (HERAPDF 1.0)-SM e

p NC (prel.)+H1 ep NC (prel.)-H1 e

p NC 06-07 (prel.)+ZEUS ep NC 05-06-ZEUS e

p NC (HERAPDF 1.0)+SM ep NC (HERAPDF 1.0)-SM e

y < 0.9 = 0eP

HERA

Page 35: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 35

� ����� ��������� �1 F���% ��#��

���� 456� ,� ������� ��) �� ��9������� �-��)��& ������ ����� �� ��� ���'����

)���9�)&

RR

RL

LR

LL

U6

U5

U4

U3

U2

U1

X6

X5

X4

X3

X2

X1

VA

AA

VV

-0.05 0 0.05

±1/Λ2 (TeV-2)

ZEUS

8.0 8.9

7.0 6.7

3.8 4.1

5.1 5.0

5.4 6.5

6.2 6.8

6.0 6.9

5.6 6.3

4.3 4.9

5.6 5.9

6.4 7.6

7.5 8.3

6.6 7.4

6.8 7.3

4.8 5.2

4.0 5.2

3.8 5.2

4.2 4.9

4.6 4.6

94-07 (prel.) e±p 0.44 fb-1

-1/Λ2 best fit value +1/Λ2 best fit value

allowed ±1/Λ2 range

Λ− (TeV) Λ+ (TeV)

Q2 (GeV2)N

/Nex

p

Quark Radius Limits (prel.)

ZEUSZEUS (prel.) e±p 0.44 fb-1

Rq2 = (0.63 ⋅10-16cm)2

Rq2 = -(0.57 ⋅10-16cm)2

1

10

103

104

0.9

0.95

1

1.05

1.1

103

104

see Ilias Panagoulias [75]

ZEUS-prel-09-013

Limit on the quark radius: R < 0.63 C )(.4 *� D A;E ��

Page 36: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 36

& ����# ���� � ���� ����� �<

<��� � *��) �� ��� %��� 456�+�� )��� ��'��� #I &"�%*��& !������� �3 '����� ? '��)������&

DESY-09-140

see David South[67]

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100

Eve

nts

-110

1

10

210

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100

Eve

nts

-110

1

10

210SMSM Signal

)-1H1+ZEUS (0.59 fb

p+e

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100

Eve

nts

-110

1

10

210

�$ �����'=

P �9��� �� �+' )����

��± &" '��)����)

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100 [

fb/G

eV]

X T/d

PWσd

1

10

210

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100 [

fb/G

eV]

X T/d

PWσd

1

10

210 )-1H1+ZEUS (0.98 fb

SM

Single W Production at HERA

[GeV]XTP

0 10 20 30 40 50 60 70 80 90 100 [

fb/G

eV]

X T/d

PWσd

1

10

210

? '��)������ ��� ������ ������)

Page 37: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 37

�����.���� �

[GeV]T PΣ0 20 40 60 80 100 120 140 160 180

Eve

nts

-210

-110

1

10

210

310

[GeV]T PΣ0 20 40 60 80 100 120 140 160 180

Eve

nts

-210

-110

1

10

210

310SM

SM Pair Prod.

)-1H1+ZEUS (0.56 fbp+e

p

[GeV]T PΣ0 20 40 60 80 100 120 140 160 180

Eve

nts

-210

-110

1

10

210

310

410

[GeV]T PΣ0 20 40 60 80 100 120 140 160 180

Eve

nts

-210

-110

1

10

210

310

410

SM

SM Pair Prod.

)-1H1+ZEUS (0.94 fbp±e

8 ������'=�9���

�*��9�) �� �+' )���

<��� � *��) �� ��� %��� 456�+�� )��� ��'��� #I &"� %*��

��5! '����� '����� �3 '��)������ ��� %�� )�9������&

DESY-09-108

see Andrea Parenti [84]e e

γ

p X

l

l

γ

l

l

γ,Ze

e

p X

e

γ

e eγ

q

q

qγ,Z l

l

Page 38: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 38

+)!���� ,'

��

������9�� �� ��� �����&

!��� %��� �� ��) 456����*���)&

�������� � ��2 H�� B&

��� *� ��'��9�) * �))��� ��2���������� .�����'����� 2��� ��2 !+

)���0

_

H1 and ZEUS

0

0.2

F2 cc_

Q2= 2 GeV2 Q2= 4 GeV2

Oct

ob

er 2

009

Q2= 6.5GeV2

0

0.5 Q2= 12GeV2 Q2= 20GeV2

HE

RA

Hea

vy F

lavo

ur

Wo

rkin

g G

rou

p

Q2= 35GeV2

0

0.5 Q2= 60GeV2 Q2=120GeV2

10-4

10-3

10-2

x

Q2=200GeV2

0

0.5

10-4

10-3

10-2

Q2=400GeV2

10-4

10-3

10-2

x

Q2=1000GeV2

HERA (prel.)

HERAPDF1.0

see Karin Daum [30]

ZEUS-prel-09-015

Page 39: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 39

0�� *�� ���� ����� #���,�2 �

� )��� �))�) �� ��� �5;<�!��& %��& �!� ��) �� )� ��� ������ ����&

>�� ��� %�� ��� 9�� �����9� �� ��� ����� �� ��) �� ��� ���9 1������������& !�%%����� �''������ '��%�� )�%%����� ���&

=�� ������ �% ��� �� '�� �� ��'������ ���� %�� '��)������ �� #��E

see Amanda Cooper-Sarkar [31]

ZEUS-prel-10-009

;=�'�����%���'��%��

��I�&���A

<�L=%���'��%��

��I�&CH��A

0

0.1

0.2

0.3

0

0.2

0.4

0

0.2

0.4

10-4

10-3

10-2

0

0.1

0.2

10-4

10-3

10-2

H1 and ZEUS

F2 cc–

Q2 = 2 GeV2 Q2 = 4 GeV2 Q2 = 6.5 GeV2

Q2 = 12 GeV2 Q2 = 20 GeV2 Q2 = 35 GeV2

Q2 = 60 GeV2 Q2 = 120 GeV2 Q2 = 200 GeV2

x

HE

RA

Inc

lusi

ve W

orki

ng G

roup

A

pril

2010

Q2 = 400 GeV2 Q2 = 1000 GeV2

x

HERA (prel.) –

HERAPDF1.0 + F2 cc (prel.)

NLO - mc=1.4 GeVNLO - mc=1.65 GeV

(Optimised RT-VFNS)

10-4

10-3

10-2

0

0.1

0.2

0.3

0

0.2

0.4

0

0.2

0.4

10-4

10-3

10-2

0

0.1

0.2

10-4

10-3

10-2

H1 and ZEUS

F2 cc–

Q2 = 2 GeV2 Q2 = 4 GeV2 Q2 = 6.5 GeV2

Q2 = 12 GeV2 Q2 = 20 GeV2 Q2 = 35 GeV2

Q2 = 60 GeV2 Q2 = 120 GeV2 Q2 = 200 GeV2

x

HE

RA

Inc

lusi

ve W

orki

ng G

roup

A

pril

2010

Q2 = 400 GeV2 Q2 = 1000 GeV2

x

HERA (prel.) –

HERAPDF1.0 + F2 cc (prel.)

NLO - mc=1.4 GeVNLO - mc=1.65 GeV

(ACOT VFNS Full)

10-4

10-3

10-2

Page 40: Andrea Parenti (DESY) on behalf of the ZEUS Collaborationparenti/cv/talks/parenti_prc69.pdfAndrea Parenti 69. PRC – Open session 13 z vtx (cm)-100 -80 -60 -40 -20 0 20 40 60 80 100

69. PRC – Open sessionAndrea Parenti 40

+����,)-(

=�� ���*���) �5;< )��� ��9� *��� ��) � ��� ��� ��'�� %�� ����(�������� �% ��� �5;<�!��& &

0.2

0.4

0.6

0.8

1

-410 -310 -210 -110 1

0.2

0.4

0.6

0.8

1

HERAPDF1.0

exp. uncert.

model uncert.

parametrization uncert.

x

xf 2 = 10 GeV2Q

vxu

vxd 0.05)×xS (

0.05)×xg (

H1 and ZEUS

0.2

0.4

0.6

0.8

1

JHEP01(2010)109

����� .��) ��0 ����) )�2�* � %����� � � )������� �� ��2 (&

������ ������� * ��� �� � �

see Shiraz Habib [169]