Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

被引：183

作者：

Aad, G. ^{[120
,121
]}

Abbott, B. ^{[153
]}

Abdallah, J. ^{[217
]}

Khalek, S. Abdel ^{[157
,158
]}

Abdinov, O. ^{[15
]}

Aben, R. ^{[146
,147
]}

Abi, B. ^{[154
]}

Abolins, M. ^{[126
]}

AbouZeid, O. S. ^{[225
]}

Abramowicz, H. ^{[219
]}

Abreu, H. ^{[218
]}

Abreu, R. ^{[45
]}

Abulaiti, Y. ^{[210
,211
]}

Acharya, B. S. ^{[232
,233
,253
]}

Adamczyk, L. ^{[62
]}

Adams, D. L. ^{[39
]}

Adelman, J. ^{[250
]}

Adomeit, S. ^{[137
]}

Adye, T. ^{[182
]}

Agatonovic-Jovina, T. ^{[18
]}

Aguilar-Saavedra, J. A. ^{[169
,174
,175
]}

Agustoni, M. ^{[24
,25
]}

Ahlen, S. P. ^{[33
]}

Ahmadov, F. ^{[15
,95
]}

Aielli, G. ^{[187
,188
]}

Akerstedt, H. ^{[210
,211
]}

Akesson, T. P. ^{[116
]}

Akimoto, G. ^{[221
,222
]}

Akimov, A. V. ^{[133
]}

Alberghi, G. L. ^{[30
,31
]}

Albert, J. ^{[243
]}

Albrand, S. ^{[83
]}

Alconada Verzini, M. J. ^{[101
,102
]}

Aleksa, M. ^{[45
]}

Aleksandrov, I. N. ^{[95
]}

Alexa, C. ^{[40
]}

Alexander, G. ^{[219
]}

Alexandre, G. ^{[75
]}

Alexopoulos, T. ^{[14
]}

Alhroob, M. ^{[232
,234
]}

Alimonti, G. ^{[127
]}

Alio, L. ^{[120
,121
]}

Alison, J. ^{[46
]}

Allbrooke, B. M. M. ^{[26
]}

Allison, L. J. ^{[103
]}

Allport, P. P. ^{[106
]}

Aloisio, A. ^{[142
,143
]}

Alonso, A. ^{[59
]}

Alonso, F. ^{[101
,102
]}

Alpigiani, C. ^{[109
]}

机构：

[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia

[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA

[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey

[5] Gazi Univ, Dept Phys, Ankara, Turkey

[6] Istanbul Aydin Univ, Istanbul, Turkey

[7] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey

[8] CNRS IN2P3, LAPP, Annecy Le Vieux, France

[9] Univ Savoie, Annecy Le Vieux, France

[10] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[11] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[12] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[13] Univ Athens, Dept Phys, Athens, Greece

[14] Natl Tech Univ Athens, Dept Phys, Zografos, Greece

[15] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan

[16] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[17] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain

[18] Univ Belgrade, Inst Phys, Belgrade, Serbia

[19] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia

[20] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[21] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA

[22] Univ Calif Berkeley, Berkeley, CA 94720 USA

[23] Humboldt Univ, Dept Phys, Berlin, Germany

[24] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[25] Univ Bern, High Energy Phys Lab, Bern, Switzerland

[26] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[27] Bogazici Univ, Dept Phys, Istanbul, Turkey

[28] Dogus Univ, Dept Phys, Istanbul, Turkey

[29] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey

[30] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[31] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[32] Univ Bonn, Inst Phys, Bonn, Germany

[33] Boston Univ, Dept Phys, Boston, MA 02215 USA

[34] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA

[35] Univ Fed Rio de Janeiro COPPE EE IF, Rio De Janeiro, Brazil

[36] Univ Fed Juiz de Fora, Juiz de Fora, Brazil

[37] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil

[38] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil

[39] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[40] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania

[41] Natl Inst Res & Dev Isotop & Mol Technol, Dept Phys, Cluj Napoca, Romania

[42] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[43] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[44] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada

[45] CERN, Geneva, Switzerland

[46] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[47] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile

[48] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

[49] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[50] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 11期

基金：

加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

BROKEN SYMMETRIES; QCD CORRECTIONS; COLLIDERS;

D O I：

10.1103/PhysRevD.90.112015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb(-1) of proton-proton collisions data at root s = 7 TeV and 20.3 fb(-1) at root s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be mu = 1.17 +/- 0.27 at the value of the Higgs boson mass measured by ATLAS, m(H) = 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of m(H). They are found to be mu(ggF) = 1.32 +/- 0.38, mu(VBF) = 0.8 +/- 0.7, mu(WH) = 1.0 +/- 1.6, mu(ZH) = 0.1(-0.1)(+3.7), and mu t (t) over barH = 1.6(-1.8)(+2.7), for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.

引用

页数：44

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