Evidence for the H → b(b)over-bar decay with the ATLAS detector

被引：0

作者：

Aaboud, M. ^{[195
,196
]}

Aad, G. ^{[129
,130
]}

Abbott, B. ^{[161
]}

Abdinov, O. ^{[15
]}

Abeloos, B. ^{[165
]}

Abidi, S. H. ^{[226
]}

AbouZeid, O. S. ^{[199
]}

Abraham, N. L. ^{[216
]}

Abramowicz, H. ^{[220
]}

Abreu, H. ^{[219
]}

Abreu, R. ^{[164
]}

Abulaiti, Y. ^{[211
,212
]}

Acharya, B. S. ^{[235
,236
,253
]}

Adachi, S. ^{[222
]}

Adamczyk, L. ^{[67
]}

Adelman, J. ^{[156
]}

Adersberger, M. ^{[145
]}

Adye, T. ^{[186
]}

Affolder, A. A. ^{[199
]}

Afik, Y. ^{[219
]}

Agatonovic-Jovin, T. ^{[17
]}

Agheorghiesei, C. ^{[42
]}

Aguilar-Saavedra, J. A. ^{[176
,181
]}

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

Ahmadov, F. ^{[103
,254
]}

Aielli, G. ^{[189
,190
]}

Akatsuka, S. ^{[106
]}

Akerstedt, H. ^{[211
,212
]}

Akesson, T. P. A. ^{[125
]}

Akilli, E. ^{[81
]}

Akimov, A. V. ^{[141
]}

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

Albert, J. ^{[242
]}

Albicocco, P. ^{[78
,79
]}

Alconada Verzini, M. J. ^{[110
,111
]}

Alderweireldt, S. C. ^{[153
]}

Aleksa, M. ^{[48
]}

Aleksandrov, I. N. ^{[103
]}

Alexa, C. ^{[41
]}

Alexander, G. ^{[220
]}

Alexopoulos, T. ^{[13
]}

Alhroob, M. ^{[161
]}

Ali, B. ^{[183
]}

Aliev, M. ^{[113
,114
]}

Alimonti, G. ^{[136
]}

Alison, J. ^{[49
]}

Alkire, S. P. ^{[63
]}

Allbrooke, B. M. M. ^{[216
]}

Allen, B. W. ^{[164
]}

Allport, P. P. ^{[24
]}

机构：

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

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

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

[4] Ankara Univ, Dept Phys, Ankara, Turkey

[5] Istanbul Aydin Univ, Istanbul, Turkey

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

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

[8] Univ Savoie Mont Blanc, Annecy Le Vieux, France

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

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

[11] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA

[12] Natl & Kapodistrian Univ Athens, Phys Dept, Athens, Greece

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

[14] Univ Texas Austin, Dept Phys, Austin, TX USA

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

[16] Barcelona Inst Sci & Technol, IFAE, Barcelona, Spain

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

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

[19] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA USA

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

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

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

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

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

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

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

[27] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[28] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[29] Univ Antonio Narino, Ctr Invest, Bogota, Colombia

[30] Univ Bologna, Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

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

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

[33] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA

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

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

[36] Fed Univ Juiz De Fora UFJF, Elect Circuits Dept, Juiz De Fora, Brazil

[37] Federal Univ Sao Joao Del Rei UFSJ, Sao Joao Del Rei, Brazil

[38] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil

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

[40] Transilvania Univ Brasov, Brasov, Romania

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

[42] Alexandra Ioan Cuza Univ Iasi, Dept Phys, Iasi, Romania

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

[44] West Univ Timisoara, Timisoara, Romania

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

[46] Univ Cambridge, Cavendish Lab, Cambridge, England

[47] Carleton Univ, Dept Phys, Ottawa, ON, Canada

[48] CERN, Geneva, Switzerland

[49] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 12期

基金：

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

关键词：

Hadron-Hadron scattering (experiments); Higgs physics; HIGGS-STRAHLUNG; BROKEN SYMMETRIES; PLUS PLUS; PROGRAM;

D O I：

10.1007/JHEP12(2017)024

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A search for the decay of the Standard Model Higgs boson into a b (b) over bar pair when produced in association with a W or Z boson is performed with the ATLAS detector. The analysed data, corresponding to an integrated luminosity of 36.1 fb(-1), were collected in proton-proton collisions in Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13 TeV. Final states containing zero, one and two charged leptons (electrons or muons) are considered, targeting the decays Z -> vv, W -> lv and Z -> ll. For a Higgs boson mass of 125 GeV, an excess of events over the expected background from other Standard Model processes is found with an observed significance of 3.5 standard deviations, compared to an expectation of 3.0 standard deviations. This excess provides evidence for the Higgs boson decay into b-quarks and for its production in association with a vector boson. The combination of this result with that of the Run 1 analysis yields a ratio of the measured signal events to the Standard Model expectation equal to 0.90 +/- 0.18(stat.)(-0.19)(+0.21)(syst.). Assuming the Standard Model production cross-section, the results are consistent with the value of the Yukawa coupling to b-quarks in the Standard Model.

引用

页码：1 / 69

页数：71

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