Measurements of inclusive and differential fiducial cross-sections of t(t)over-bar production with additional heavy-flavour jets in proton-proton collisions at √s=13 TeV with the ATLAS detector

被引:0
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作者
Aaboud, M. [54 ,55 ]
Aad, G. [153 ]
Abbott, B. [182 ]
Abdinov, O. [18 ]
Abeloos, B. [186 ]
Abhayasinghe, D. K. [144 ]
Abidi, S. H. [230 ]
AbouZeid, O. S. [61 ]
Abraham, N. L. [217 ]
Abramowicz, H. [223 ]
Abreu, H. [222 ]
Abulaiti, Y. [8 ]
Acharya, B. S. [99 ,100 ,260 ]
Adachi, S. [225 ,226 ]
Adam, L. [151 ]
Adamczyk, L. [130 ]
Adelman, J. [174 ]
Adersberger, M. [166 ]
Adiguzel, A. [16 ,175 ,176 ,272 ]
Adye, T. [203 ]
Affolder, A. A. [209 ]
Afik, Y. [222 ]
Agheorghiesei, C. [40 ]
Aguilar-Saavedra, J. A. [194 ,199 ,271 ]
Ahmadov, F. [18 ,123 ]
Aielli, G. [114 ,115 ]
Akatsuka, S. [133 ]
Akesson, T. P. A. [147 ]
Akilli, E. [78 ]
Akimov, A. V. [162 ]
Alberghi, G. L. [33 ,34 ]
Albert, J. [241 ]
Albicocco, P. [74 ,75 ]
Alconada Verzini, M. J. [137 ,138 ]
Alderweireldt, S. [172 ]
Aleksa, M. [57 ]
Aleksandrov, I. N. [123 ]
Alexa, C. [39 ]
Alexandre, D.
Alexopoulos, T. [12 ]
Alhroob, M. [182 ]
Ali, B. [201 ]
Alimonti, G. [104 ]
Alison, J. [58 ]
Alkire, S. P. [208 ]
Allaire, C. [186 ]
Allbrooke, B. M. M. [217 ]
Allen, B. W. [185 ]
Allport, P. P. [31 ]
Aloisio, A. [106 ,107 ]
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, CNRS, LAPP,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, 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, Turkey
[15] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[16] Bogazici Univ, Dept Phys, Istanbul, Turkey
[17] Gaziantep Univ, Dept Phys Engn, 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, Phys Dept, Beijing, Peoples R China
[22] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
[23] 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, 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, Phys Dept, 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
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 04期
基金
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; 欧盟地平线“2020”;
关键词
Hadron-Hadron scattering (experiments); Heavy quark production; TOP-QUARK PAIR; PARTON DISTRIBUTIONS; PP COLLISIONS; PLUS PLUS; ASSOCIATION; PROGRAM; LHC;
D O I
10.1007/JHEP04(2019)046
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
This paper presents measurements of tt (t) over bar production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb(-1). Fiducial cross-section measurements are performed in the dilepton and lepton-plus-jets tt (t) over bar decay channels. Results are presented at particle level in the form of inclusive cross-sections of tt final states with three and four b-jets as well as differential cross-sections as a function of global event properties and properties of b-jet pairs. The measured inclusive fiducial cross-sections generally exceed the t (t) over barb (b) over bar predictions from various next-to-leading-order matrix element calculations matched to a parton shower but are compatible within the total uncertainties. The experimental uncertainties are smaller than the uncertainties in the predictions. Comparisons of state-of-the-art theoretical predictions with the differential measurements are shown and good agreement with data is found for most of them.
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