Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

Youhei Yamaguchi

doi:10.1016/j.physletb.2014.03.015

論文・著書情報

タイトル

和文:	Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector
英文:	Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

著者

和文:	山口洋平.
英文:	Youhei Yamaguchi.

言語

English

掲載誌/書名

和文:
英文:

巻, 号, ページ

Vol. "B732" pp. "8-27"

出版年月

2014年2月

出版者

和文:
英文:

会議名称

和文:
英文:

開催地

和文:
英文:

公式リンク

http://inspirehep.net/record/1281233

DOI

https://doi.org/10.1016/j.physletb.2014.03.015

アブストラクト

A search is reported for a neutral Higgs boson in the decay channel H->Z gamma, Z->l+l- (l=e, mu), using 4.5 fb-1 of pp collisions at sqrt(s) = 7 TeV and 20.3 fb-1 of pp collisions at sqrt(s) = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, m(llgamma), is consistent with the Standard Model hypothesis in the investigated mass range of 120-150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120-150 GeV between 0.13 and 0.5 pb for sqrt(s)=8 TeV at 95% confidence

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