Measurements of inclusive and differential fiducial cross-sections of t(t)over-barγ production in leptonic final states at √s=13 TeV in ATLAS

被引：0

作者：

Aaboud, M. ^{[57
,58
]}

Aad, G. ^{[157
]}

Abbott, B. ^{[188
]}

Abbott, D. C. ^{[158
]}

Abdinov, O. ^{[18
]}

Abeloos, B. ^{[192
]}

Abhayasinghe, D. K. ^{[148
]}

Abidi, S. H. ^{[235
]}

AbouZeid, O. S. ^{[64
]}

Abraham, N. L. ^{[222
]}

Abramowicz, H. ^{[228
]}

Abreu, H. ^{[227
]}

Abulaiti, Y. ^{[8
]}

Acharya, B. S. ^{[103
,104
,263
]}

Adachi, S. ^{[230
,231
]}

Adam, L. ^{[155
]}

Adamczyk, L. ^{[134
]}

Adamek, L. ^{[235
]}

Adelman, J. ^{[179
]}

Adersberger, M. ^{[170
]}

Adiguzel, A. ^{[16
,275
]}

Adye, T. ^{[209
]}

Affolder, A. A. ^{[211
]}

Afik, Y. ^{[227
]}

Agheorghiesei, C. ^{[42
]}

Aguilar-Saavedra, J. A. ^{[200
,205
]}

Ahmadov, F. ^{[18
,127
]}

Aielli, G. ^{[118
,119
]}

Akatsuka, S. ^{[137
]}

Akesson, T. P. A. ^{[151
]}

Akilli, E. ^{[81
]}

Akimov, A., V ^{[166
]}

Alberghi, G. L. ^{[34
,35
,36
]}

Albert, J. ^{[246
]}

Albicocco, P. ^{[77
,78
]}

Alconada Verzini, M. J. ^{[141
,142
]}

Alderweireldt, S. ^{[176
]}

Aleksa, M. ^{[60
]}

Aleksandrov, I. N. ^{[127
]}

Alexa, C. ^{[41
]}

Alexandre, D. ^{[28
]}

Alexopoulos, T. ^{[12
]}

Alhroob, M. ^{[188
]}

Ali, B. ^{[207
]}

Alimonti, G. ^{[108
]}

Alison, J. ^{[61
]}

Alkire, S. P. ^{[214
]}

Allaire, C. ^{[192
]}

Allbrooke, B. M. M. ^{[222
]}

Allen, B. W. ^{[191
]}

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 Grenoble Alpes, Univ Savoie Mt Blanc, IN2P3, CNRS, 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, Inst Fis Altes Energies, 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] Univ Chinese Acad Sci, 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] Ist Nazl Fis Nucl, Dipartimento Fis, Bologna, Italy

[35] Univ Bologna, 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, Inst Expt Phys, Dept Subnucl 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, CA USA

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 欧盟地平线“2020”; 巴西圣保罗研究基金会;

关键词：

A-center - ATLAS detectors - Differential cross-sections - Dileptons - Final state - Integrated luminosity - Measurements of - Proton proton collisions - Pseudorapidities - Top quarks;

D O I：

10.1140/epjc/s10052-019-6849-6

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：

Inclusive and differential cross-sections for the production of a top-quark pair in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 36.1fb-1, collected by the ATLAS detector at the LHC in 2015 and 2016 at a centre-of-mass energy of 13TeV. The measurements are performed in single-lepton and dilepton final states in a fiducial volume. Events with exactly one photon, one or two leptons, a channel-dependent minimum number of jets, and at least one b-jet are selected. Neural network algorithms are used to separate the signal from the backgrounds. The fiducial cross-sections are measured to be 521 +/- 9(stat.)+/- 41(sys.)fb and 69 +/- 3(stat.)+/- 4(sys.) fb for the single-lepton and dilepton channels, respectively. The differential cross-sections are measured as a function of photon transverse momentum, photon absolute pseudorapidity, and angular distance between the photon and its closest lepton in both channels, as well as azimuthal opening angle and absolute pseudorapidity difference between the two leptons in the dilepton channel. All measurements are in agreement with the theoretical predictions.

引用

页数：41

共 62 条

[1]

Aaboud M, 2018, J HIGH ENERGY PHYS, DOI 10.1007/JHEP08(2018)089

[2] Performance of the ATLAS trigger system in 2015 [J].

Aaboud, M. ;

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdinov, O. ;

Abcloos, B. ;

Aben, R. ;

AbouZeid, O. S. ;

Abraham, N. L. ;

Abramowicz, H. ;

Abreu, H. ;

Abreu, R. ;

Abuiaiti, Y. ;

Acharya, B. S. ;

Adakchi, S. ;

Adamczyk, L. ;

Adams, D. L. ;

Adelman, J. ;

Adomeit, S. ;

Adye, T. ;

Affolder, A. A. ;

Agatonovic-Jovin, T. ;

Aguilar-Saavedra, J. A. ;

Ahlen, S. P. ;

Ahmadov, F. ;

Aielli, G. ;

Akerstedt, H. ;

Akesson, T. P. A. ;

Akimov, A. V. ;

Alberghi, G. L. ;

Albert, J. ;

Albrand, S. ;

Alconada Verzini, M. J. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Ali, B. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Alkire, S. P. ;

Allbrooke, B. M. M. ;

Allen, B. W. ;

Allport, P. P. ;

Aloisio, A. ;

Alonso, A. ;

Alonso, F. .

EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (05)

[3]

Aaboud M, 2016, EUR PHYS J C, V76, DOI 10.1140/epjc/s10052-016-4466-1

[4]

Aad G, 2016, EUR PHYS J C, V76, DOI 10.1140/epjc/s10052-016-4120-y

[5]

Aad G, 2015, EUR PHYS J C, V75, DOI 10.1140/epjc/s10052-014-3190-y

[6] Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, S. ;

Abramowicz, H. ;

Abreu, H. ;

Acerbi, E. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Aderholz, M. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Akiyama, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. .

EUROPEAN PHYSICAL JOURNAL C, 2013, 73 (03)

[7]

Aad G, 2013, EUR PHYS J C, V73, DOI 10.1140/epjc/s10052-013-2306-0

[8] The ATLAS Simulation Infrastructure [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Abdelalim, A. A. ;

Abdesselam, A. ;

Abdinov, O. ;

Abi, B. ;

Abolins, M. ;

Abramowicz, H. ;

Abreu, H. ;

Acharya, B. S. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Adorisio, C. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahmed, H. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. ;

Akimoto, G. ;

Akimov, A. V. ;

Aktas, A. ;

Alam, M. S. ;

Alam, M. A. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Aliyev, M. ;

Allport, P. P. ;

Allwood-Spiers, S. E. ;

Almond, J. ;

Aloisio, A. ;

Alon, R. .

EUROPEAN PHYSICAL JOURNAL C, 2010, 70 (03) :823-874

[9]

Aad G, 2008, J. Instrum., V3, DOI DOI 10.1088/1748-0221/3/08/S08003

[10] Production and integration of the ATLAS Insertable B-Layer [J].

Abbott, B. ;

Albert, J. ;

Alberti, F. ;

Alex, M. ;

Alimonti, G. ;

Alkire, S. ;

Allport, P. ;

Altenheiner, S. ;

Ancu, L. S. ;

Anderssen, E. ;

Andreani, A. ;

Andreazza, A. ;

Axen, B. ;

Arguin, J. ;

Backhaus, M. ;

Balbi, G. ;

Ballansat, J. ;

Barbero, M. ;

Barbier, G. ;

Bassalat, A. ;

Bates, R. ;

Baudin, P. ;

Battaglia, M. ;

Beau, T. ;

Beccherle, R. ;

Bell, A. ;

Benoit, M. ;

Bermgan, A. ;

Bertsche, C. ;

Bertsche, D. ;

de Mendizabal, J. Bilbao ;

Bindi, F. ;

Bomben, M. ;

Borri, M. ;

Bortolin, C. ;

Bousson, N. ;

Boyd, R. G. ;

Breugnon, P. ;

Bruni, G. ;

Brossamer, J. ;

Bruschi, M. ;

Buchholz, P. ;

Budun, E. ;

Buttar, C. ;

Cadoux, F. ;

Calderini, G. ;

Caminada, L. ;

Capeans, M. ;

Carney, R. ;

Casse, G. .

JOURNAL OF INSTRUMENTATION, 2018, 13

← 1 2 3 4 5 6 7 →