Identifiers for Contributors and Data · This may arise in models with new weakly interacting...

Identifiers for Contributors and Data New Information Services (in particle physics)

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October 6th, 2014���Yokohama Library Fair

Salvatore.Mele@CERN.ch

LHC 10’000+ scientists+engineers, 85 countries, 20+ years

27 Km, -271.25°C, 99.999999% of speed of light

Four “detectors”: big “digital cameras”

Welcome to CERN

Discovery of the Higgs boson

article

2899 authors

references

Who is an author?

1m records, half a century of HEP

500k Open Access papers

20m citation triples

>20k disambiguated authors >50k users (all HEP folks)

>2 searches/second

Who is an author?

My university needs me to list my publications in ORCID

Can you show in INSPIRE all my publications (also off-topic) ?

What does a theorist need?

Data: LHC ~100PB(=100’000TB) on tape at CERN

Data: How does the Higgs Boson behave

5 Constraints on invisible width

Going beyond the e↵ective Higgs Lagrangian in Eq. 1, it is interesting to consider the possibilityof an invisible Higgs width. This may arise in models with new weakly interacting light degreesof freedom that have a significant couplings to the Higgs boson, for example in Higgs-portalmodels of dark matter or in supersymmetric models. The invisible decays have been directlysearched for at the LHC. The current 95% CL limits on the invisible branching fraction areBr

inv

< 65% in the ZH production mode in ATLAS 26, Brinv

< 75% in the ZH production modein CMS 27, and Br

inv

< 69% in the VBF production mode in CMS 28. Stronger limits on theinvisible Higgs width can be obtained indirectly from a global fit to the Higgs couplings. In thecase when the couplings of the Higgs to the SM matter take the SM values the invisible widthleads to a universal reduction of the decay rates in all the visible channels. This possibility isstrongly constrained, given the Higgs is observed in several channels with the rate close to theSM one. From Fig. 1(b) one can read o↵ the limit Br

inv

< 16% at 95% CL. This bound can berelaxed if one allows new physics to modify the Higgs couplings such that the Higgs productioncross-section is enhanced, so as to o↵set the reduction of the visible rates. For example, if cggis allowed to float freely in the fit, the weaker limit Br

inv

< 40% is obtained. Note that theseindirect limits apply to any other exotic (but not necessarily invisible) contribution to the Higgswidth.

Acknowledgments

AF thanks Dean Carmi, Erik Kuflik, Francesco Riva, Alfredo Urbano, Tomer Volansky andJure Zupan for collaboration on closely related projects. AF also thanks the organizers of theconference Windows on the Universe for the invitation and support.

References

1. G. Aad et al. [ATLAS Collaboration], Phys. Lett. B 716, 1 (2012) [arXiv:1207.7214[hep-ex]]. S. Chatrchyan et al. [CMS Collaboration], Phys. Lett. B 716, 30 (2012)[arXiv:1207.7235 [hep-ex]].

2. B. Grzadkowski et al. , JHEP 1010, 085 (2010) [arXiv:1008.4884 [hep-ph]],3. R. Contino et al. JHEP 1307 (2013) 035 [arXiv:1303.3876 [hep-ph]].4. A. Falkowski, F. Riva and A. Urbano, arXiv:1303.1812 [hep-ph].5. G. Aad et al. [ATLAS Collaboration], Phys. Lett. B 726 (2013) 88 [arXiv:1307.1427

[hep-ex]].6. ATLAS Collaboration, “Data from Figure 7 from: Measurements of Higgs boson produc-

tion and couplings in diboson final states with the ATLAS detector at the LHC: H ! ��,”http://doi.org/10.7484/INSPIREHEP.DATA.A78C.HK44

7. ATLAS Collaboration, “Data from Figure 7 from: Measurements of Higgs boson pro-duction and couplings in diboson final states with the ATLAS detector at the LHC:H ! ZZ⇤ ! 4`,” http://doi.org/10.7484/INSPIREHEP.DATA.RF5P.6M3K

8. ATLAS Collaboration, “Data from Figure 7 from: Measurements of Higgs boson pro-duction and couplings in diboson final states with the ATLAS detector at the LHC:H ! WW⇤ ! `⌫`⌫,” http://doi.org/10.7484/INSPIREHEP.DATA.26B4.TY5F

9. ATLAS Collaboration, ATLAS-CONF-2013-034.10. ATLAS Collaboration, ATLAS-CONF-2013-079.11. ATLAS Collaboration, ATLAS-CONF-2012-135.12. ATLAS Collaboration, ATLAS-CONF-2013-080.13. ATLAS Collaboration, ATLAS-CONF-2013-009.14. ATLAS Collaboration, ATLAS-CONF-2013-010.15. CMS Collaboration, CMS-HIG-13-001.

Who is an author?

Meet Kyle Cranmer

Salvatore.MELE@CERN.ch

Open Data team: Sünje Dallmeier-Tiessen, Patricia Herterich, Laura Rueda et al. Author ID team: Gilles Louppe, Margaret Miller, Heath O’Connell, Yu Runsheng et al.