Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s=13 TeV with the ATLAS detector

被引:0
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作者
Aad, G. [159 ]
Abbott, B. [190 ]
Abbott, D. C. [160 ]
Abud, A. Abed [60 ]
Abeling, K. [81 ]
Abhayasinghe, D. K. [150 ]
Abidi, S. H. [239 ]
AbouZeid, O. S. [64 ]
Abraham, N. L. [226 ]
Abramowicz, H. [232 ]
Abreu, H. [231 ]
Abulaiti, Y. [8 ]
Acharya, B. S. [105 ,106 ,267 ]
Achkar, B. [81 ]
Adachi, S. [234 ,235 ]
Adam, L. [157 ]
Bourdarios, C. Adam [7 ]
Adamczyk, L. [136 ]
Adamek, L. [239 ]
Adelman, J. [180 ]
Adersberger, M. [171 ]
Adiguzel, A. [16 ]
Adorni, S. [82 ]
Adye, T. [211 ]
Affolder, A. A. [213 ]
Afik, Y. [231 ]
Agapopoulou, C. [103 ]
Agaras, M. N. [62 ]
Aggarwal, A. [177 ]
Agheorghiesei, C. [42 ]
Aguilar-Saavedra, J. A. [201 ,206 ,279 ]
Ahmadov, F. [129 ]
Ahmed, W. S. [161 ]
Ai, X. [26 ,27 ]
Aielli, G. [120 ,121 ]
Akatsuka, S. [139 ]
Akesson, T. P. A. [153 ]
Akilli, E. [82 ]
Akimov, A., V [168 ]
Al Khoury, K. [103 ]
Alberghi, G. L. [34 ,35 ,36 ]
Albert, J. [250 ]
Verzini, M. J. Alconada [232 ]
Alderweireldt, S. [60 ]
Aleksa, M. [60 ]
Aleksandrov, I. N. [129 ]
Alexa, C. [41 ]
Alexopoulos, T. [12 ]
Alfonsi, A. [178 ,179 ]
Alfonsi, F. [34 ,35 ,36 ]
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, Turkiye
[5] Istanbul Aydin Univ, Applicat & Res Ctr Adv Studies, Istanbul, Turkiye
[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkiye
[7] Univ Grenoble Alpes, Univ Savoie Mt Blanc, CNRS, IN2P3,LAPP, Annecy, France
[8] Argonne Natl Lab, High Energy Phys Div, 9700 S Cass Ave, 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, Phys Dept, Athens, Greece
[12] Natl Tech Univ Athens, Phys Dept, Zografos, Greece
[13] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[14] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkiye
[15] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkiye
[16] Bogazici Univ, Dept Phys, Istanbul, Turkiye
[17] Gaziantep Univ, Dept Phys Engn, Gaziantep, Turkiye
[18] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan
[19] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Barcelona, Spain
[20] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[21] Tsinghua Univ, Phys Dept, Beijing, Peoples R China
[22] Nanjing Univ, Dept Phys, Nanjing, 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, Phys Div, 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, Lab High Energy Phys, Bern, Switzerland
[31] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[32] Univ Antonio Narino, Fac Ciencias, Bogota, Colombia
[33] Univ Antonio Narino, Ctr Invest, Bogota, Colombia
[34] INFN Bologna, Bologna, Italy
[35] Univ Bologna, Dipartimento Fis, Bologna, Italy
[36] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy
[37] Univ Bonn, Phys Inst, Bonn, Germany
[38] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[39] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[40] Transilvania Univ Brasov, Brasov, Romania
[41] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[42] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania
[43] Natl Inst Res & Dev Isotop & Mol Technol, Phys Dept, Cluj Napoca, Romania
[44] West Univ Timisoara, Timisoara, Romania
[45] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[46] Slovak Acad Sci, Dept Subnucl Phys, Inst Expt Phys, Kosice, Slovakia
[47] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[48] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[49] Calif State Univ Long Beach, Long Beach, CA 90840 USA
[50] Univ Cambridge, Cavendish Lab, Cambridge, England
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 06期
基金
欧盟地平线“2020”; 巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会;
关键词
Hadron-Hadron Scattering; Top Physics; PLUS PLUS; FRAGMENTATION;
D O I
10.1007/JHEP06(2023)019
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 measurement of the top-quark mass (m(t)) in the t (t) over bar -> lepton+ jets channel is presented, with an experimental technique which exploits semileptonic decays of b-hadrons produced in the top-quark decay chain. The distribution of the invariant mass m(l mu) of the lepton, l (with l = e, mu), from the W-boson decay and the muon, mu, originating from the b-hadron decay is reconstructed, and a binned-template profile likelihood fit is performed to extract mt. The measurement is based on data corresponding to an integrated luminosity of 36.1 fb(-1) of root s = 13 TeV pp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. The measured value of the top-quark mass is mt = 174.41 +/- 0.39 (stat.) +/- 0.66 (syst.) +/- 0.25 (recoil) GeV, where the third uncertainty arises from changing the Pythia8 parton shower gluon-recoil scheme, used in top-quark decays, to a recently developed setup.
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