Measurement of the dependence of transverse energy production at large pseudorapidity on the hard-scattering kinematics of proton-proton collisions at √s=2.76 TeV with ATLAS

被引:17
|
作者
Aad, G. [116 ,117 ]
Abbott, B. [148 ]
Abdallah, J. [205 ]
Abdinov, O. [14 ]
Aben, R. [141 ,142 ]
Abolins, M. [121 ]
AbouZeid, O. S. [213 ]
Abramowicz, H. [207 ]
Abreu, H. [206 ]
Abreu, R. [151 ]
Abulaiti, Y. [198 ,199 ]
Acharya, B. S. [221 ,222 ,242 ]
Adamczyk, L. [59 ]
Adams, D. L. [36 ]
Adelman, J. [143 ]
Adomeit, S. [132 ]
Adye, T. [174 ]
Affolder, A. A. [102 ]
Agatonovic-Jovin, T. [16 ]
Agricola, J. [269 ]
Aguilar-Saavedra, J. A. [163 ,168 ,169 ]
Ahlen, S. P. [30 ]
Ahmadov, F. [14 ,92 ]
Aielli, G. [177 ,178 ]
Akerstedt, H. [198 ,199 ]
Akesson, T. P. A. [112 ]
Akimov, A. V. [128 ]
Alberghi, G. L. [27 ,28 ]
Albert, J. [232 ]
Albrand, S. [78 ]
Alconada Verzini, M. J. [97 ,98 ]
Aleksa, M. [42 ]
Aleksandrov, I. N. [92 ]
Alexa, C. [37 ]
Alexander, G. [207 ]
Alexopoulos, T. [13 ]
Alhroob, M. [148 ]
Alimonti, G. [122 ]
Alio, L. [116 ,117 ]
Alison, J. [43 ]
Alkire, S. P. [55 ]
Allbrooke, B. M. M. [203 ]
Allport, P. P. [23 ]
Aloisio, A. [137 ,138 ]
Alonso, A. [56 ]
Alonso, F. [97 ,98 ]
Alpigiani, C. [105 ]
Altheimer, A. [55 ]
Gonzalez, B. Alvarez [42 ]
Piqueras, D. Alvarez [226 ,227 ,228 ,229 ,230 ]
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, TR-06100 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, Div High Energy Phys, 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] Univ Athens, Dept Phys, Athens, Greece
[13] Natl Tech Univ Athens, Dept Phys, GR-15773 Zografos, Greece
[14] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan
[15] Barcelona Inst Sci & Technol, Inst Fis Altes Energies, Barcelona, Spain
[16] Univ Belgrade, Inst Phys, Belgrade, Serbia
[17] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[18] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA
[19] Univ Calif Berkeley, Berkeley, CA 94720 USA
[20] Humboldt Univ, Dept Phys, Invalidenstr 110, Berlin, Germany
[21] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[22] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[23] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[24] Bogazici Univ, Dept Phys, Istanbul, Turkey
[25] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[26] Dogus Univ, Dept Phys, Istanbul, Turkey
[27] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[28] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[29] Univ Bonn, Inst Phys, Nussallee 12, Bonn, Germany
[30] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[31] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[32] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[33] Fed Univ Juiz De Fora UFJF, Elect Circuits Dept, Juiz De Fora, Brazil
[34] Fed Univ Sao Joao Del Rei UFSJ, Sao Joao Del Rei, Brazil
[35] Univ Sao Paulo, Inst Fis, CP 20516, BR-01498 Sao Paulo, Brazil
[36] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[37] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[38] Natl Inst Res & Dev Isotop & Mol Technol, Dept Phys, Cluj Napoca, Romania
[39] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[40] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[41] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[42] CERN, Geneva, Switzerland
[43] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
[44] Pontificia Univ Catolica Chile, Dept Fis, Alameda 340, Santiago, Chile
[45] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[46] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[47] Univ Sci & Technol China, Dept Modern Phys, Wuhan, Anhui, Peoples R China
[48] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
[49] Shandong Univ, Sch Phys, Jinan, Shandong, Peoples R China
[50] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200030, Peoples R China
基金
加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会; 美国国家科学基金会; 欧盟地平线“2020”;
关键词
EVENTS;
D O I
10.1016/j.physletb.2016.02.056
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The relationship between jet production in the central region and the underlying-event activity in a pseudorapidity-separated region is studied in 4.0 pb(-1) of root s = 2.76 TeV pp collision data recorded with the ATLAS detector at the LHC. The underlying event is characterised through measurements of the average value of the sum of the transverse energy at large pseudorapidity downstream of one of the protons, which are reported here as a function of hard-scattering kinematic variables. The hard scattering is characterised by the average transverse momentum and pseudorapidity of the two highest transverse momentum jets in the event. The dijet kinematics are used to estimate, on an event-by-event basis, the scaled longitudinal momenta of the hard-scattered partons in the target and projectile beam-protons moving toward and away from the region measuring transverse energy, respectively. Transverse energy production at large pseudorapidity is observed to decrease with a linear dependence on the longitudinal momentum fraction in the target proton and to depend only weakly on that in the projectile proton. The results are compared to the predictions of various Monte Carlo event generators, which qualitatively reproduce the trends observed in data but generally underpredict the overall level of transverse energy at forward pseudorapidity. (C) 2016 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V.
引用
收藏
页码:10 / 28
页数:19
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