Cross-section measurements of the Higgs boson decaying into a pair of τ-leptons in proton-proton collisions at √s=13 TeV with the ATLAS detector

被引:69
|
作者
Aaboud, M. [54 ,55 ]
Aad, G. [154 ]
Abbott, B. [181 ]
Abdinov, O. [18 ]
Abeloos, B. [185 ]
Abhayasinghe, D. K. [145 ]
Abidi, S. H. [230 ]
AbouZeid, O. S. [61 ]
Abraham, N. L. [217 ]
Abramowicz, H. [223 ]
Abreu, H. [222 ]
Abulaiti, Y. [8 ]
Acharya, B. S. [100 ,101 ,263 ]
Adachi, S. [225 ,226 ]
Adamczyk, L. [131 ]
Adelman, J. [175 ]
Adersberger, M. [167 ]
Adiguzel, A. [16 ,282 ]
Adye, T. [203 ]
Affolder, A. A. [205 ]
Afik, Y. [222 ]
Agheorghiesei, C. [40 ]
Aguilar-Saavedra, J. A. [193 ,198 ]
Ahmadov, F. [124 ,280 ]
Aielli, G. [115 ,116 ]
Akatsuka, S. [134 ]
Akesson, T. P. A. [148 ]
Akilli, E. [78 ]
Akimov, A. V. [163 ]
Alberghi, G. L. [33 ,34 ]
Albert, J. [241 ]
Albicocco, P. [74 ,75 ]
Alconada Verzini, M. J. [138 ,139 ]
Alderweireldt, S. [173 ]
Aleksa, M. [57 ]
Aleksandrov, I. N. [124 ]
Alexa, C. [39 ]
Alexopoulos, T. [12 ]
Alhroob, M. [181 ]
Ali, B. [200 ]
Alimonti, G. [105 ]
Alison, J. [58 ]
Alkire, S. P. [208 ]
Allaire, C. [185 ]
Allbrooke, B. M. M. [217 ]
Allen, B. W. [184 ]
Allport, P. P. [31 ]
Aloisio, A. [107 ,108 ]
Alonso, A. [61 ]
Alonso, F. [138 ,139 ]
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, Ankara, Turkey
[5] Istanbul Aydin Univ, Istanbul, Turkey
[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[7] Univ Savoie Mt Blanc, Univ Grenoble Alpes, LAPP, CNRS,IN2P3, Annecy, France
[8] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[9] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[10] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA
[11] Natl & Kapodistrian Univ Athens, Dept Phys, Athens, Greece
[12] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[13] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[14] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[15] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[16] Bogazici Univ, Dept Phys, Istanbul, Turkey
[17] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[18] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan
[19] Barcelona Inst Sci & Technol, IFAE, Barcelona, Spain
[20] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[21] Tsinghua Univ, Dept Phys, Beijing, Peoples R China
[22] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
[23] Univ Chinese Acad Sci UCAS, Beijing, Peoples R China
[24] Univ Belgrade, Inst Phys, Belgrade, Serbia
[25] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[26] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA USA
[27] Univ Calif Berkeley, Berkeley, CA 94720 USA
[28] Humboldt Univ, Inst Phys, Berlin, Germany
[29] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[30] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[31] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[32] Univ Antonio Narino, Ctr Invest, Bogota, Colombia
[33] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[34] INFN Sez Bologna, Bologna, Italy
[35] Univ Bonn, Phys Inst, Bonn, Germany
[36] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[37] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[38] Transilvania Univ Brasov, Brasov, Romania
[39] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[40] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania
[41] Natl Inst Res & Dev Isotop & Mol Technol, Dept Phys, Cluj Napoca, Romania
[42] West Univ Timisoara, Timisoara, Romania
[43] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[44] Slovak Acad Sci, Inst Expt Phys, Dept Subnucl Phys, Kosice, Slovakia
[45] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[46] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[47] Univ Cambridge, Cavendish Lab, Cambridge, England
[48] Univ Cape Town, Dept Phys, Cape Town, South Africa
[49] Univ Johannesburg, Dept Mech Engn Sci, Johannesburg, South Africa
[50] Univ Witwatersrand, Sch Phys, Johannesburg, South Africa
基金
巴西圣保罗研究基金会; 欧盟地平线“2020”; 加拿大自然科学与工程研究理事会;
关键词
PARTON DISTRIBUTIONS; QCD CORRECTIONS; PLUS PLUS; HADRON; ASSOCIATION; SYMMETRIES; MASS; LHC;
D O I
10.1103/PhysRevD.99.072001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A measurement of production cross sections of the Higgs boson in proton-proton collisions is presented in the H -> tau tau decay channel. The analysis is performed using 36.1 fb(-1) of data recorded by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy of root s = 13 TeV. All combinations of leptonic (tau -> l v (v) over bar with l = e, mu) and hadronic (tau -> hadrons v) tau decays arc considered. The H -> tau tau signal over the expected background from other Standard Model processes is established with an observed (expected) significance of 4.4 (4.1) standard deviations. Combined with results obtained using data taken at 7 and 8 TeV center-of-mass energies, the observed (expected) significance amounts to 6.4 (5.4) standard deviations and constitutes an observation of H -> tau tau decays. Using the data taken at root s = 13 TeV, the total cross section in the H -> tau tau decay channel is measured to be 3.77(-0.59)(+0.60)(stat)(-0.74)(+0.87) (syst) pb, for a Higgs boson of mass 125 GeV assuming the relative contributions of its production modes as predicted by the Standard Model. Total cross sections in the H -> tau tau decay channel are determined separately for vector-boson-fusion production and gluon-gluon-fusion production to be sigma(VBF)(H -> tau tau) = 0.28 +/- 0.09 (stat)(-0.09)(+0.11) (syst) pb and sigma(ggF)(H -> tau tau) = 3.1 +/- 1.0 (stat)(-1.3)(+1.6) (syst) pb, respectively. Similarly, results of a fit are reported in the framework of simplified template cross sections. All measurements are in agreement with Standard Model expectations.
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页数:39
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