Underlying event measurements in p plus p collisions at √s=200 GeV at RHIC

被引：14

作者：

Adam, J. ^{[6
]}

Adamczyk, L. ^{[2
]}

Adams, J. R. ^{[39
]}

Adkins, J. K. ^{[30
]}

Agakishiev, G. ^{[28
]}

Aggarwal, M. M. ^{[40
]}

Ahammed, Z. ^{[59
]}

Alekseev, I ^{[3
,35
]}

Anderson, D. M. ^{[53
]}

Aparin, A. ^{[28
]}

Aschenauer, E. C. ^{[6
]}

Ashraf, M. U. ^{[11
]}

Atetalla, F. G. ^{[29
]}

Attri, A. ^{[40
]}

Averichev, G. S. ^{[28
]}

Bairathi, V ^{[22
]}

Barish, K. ^{[10
]}

Behera, A. ^{[51
]}

Bellwied, R. ^{[20
]}

Bhasin, A. ^{[27
]}

Bielcik, J. ^{[14
]}

Bielcikova, J. ^{[38
]}

Bland, L. C. ^{[6
]}

Bordyuzhin, I. G. ^{[3
]}

Brandenburg, J. D. ^{[6
,48
]}

Brandin, A., V ^{[35
]}

Butterworth, J. ^{[44
]}

Caines, H. ^{[62
]}

Sanchez, M. Calderon de la Barca ^{[8
]}

Cebra, D. ^{[8
]}

Chakaberia, I ^{[6
,29
]}

Chaloupka, P. ^{[14
]}

Chan, B. K. ^{[9
]}

Chang, F-H ^{[37
]}

Chang, Z. ^{[6
]}

Chankova-Bunzarova, N. ^{[28
]}

Chatterjee, A. ^{[11
]}

Chen, D. ^{[10
]}

Chen, J. H. ^{[18
]}

Chen, X. ^{[47
]}

Chen, Z. ^{[48
]}

Cheng, J. ^{[55
]}

Cherney, M. ^{[13
]}

Chevalier, M. ^{[10
]}

Choudhury, S. ^{[18
]}

Christie, W. ^{[6
]}

Crawford, H. J. ^{[7
]}

Csanad, M. ^{[16
]}

Daugherity, M. ^{[1
]}

Dedovich, T. G. ^{[28
]}

机构：

[1] Abilene Christian Univ, Abilene, TX 79699 USA

[2] AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland

[3] Kurchatov Inst, Alikhanov Inst Theoret & Expt Phys NRC, Moscow 117218, Russia

[4] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA

[5] Amer Univ Cairo, New Cairo 11835, Egypt

[6] Brookhaven Natl Lab, Upton, NY 11973 USA

[7] Univ Calif Berkeley, Berkeley, CA 94720 USA

[8] Univ Calif Davis, Davis, CA 95616 USA

[9] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[10] Univ Calif Riverside, Riverside, CA 92521 USA

[11] Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China

[12] Univ Illinois, Chicago, IL 60607 USA

[13] Creighton Univ, Omaha, NE 68178 USA

[14] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic

[15] Tech Univ Darmstadt, D-64289 Darmstadt, Germany

[16] Eotvos Lorand Univ, H-1117 Budapest, Hungary

[17] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

[18] Fudan Univ, Shanghai 200433, Peoples R China

[19] Heidelberg Univ, D-69120 Heidelberg, Germany

[20] Univ Houston, Houston, TX 77204 USA

[21] Huzhou Univ, Huzhou 313000, Zhejiang, Peoples R China

[22] Indian Inst Sci Educ & Res, Berhampur 760010, India

[23] Indian Inst Sci Educ & Res IISER Tirupati, Tirupati 517507, Andhra Pradesh, India

[24] Indian Inst Technol, Patna 801106, Bihar, India

[25] Indiana Univ, Bloomington, IN 47408 USA

[26] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China

[27] Univ Jammu, Jammu 180001, India

[28] Joint Inst Nucl Res, Dubna 141980, Russia

[29] Kent State Univ, Kent, OH 44242 USA

[30] Univ Kentucky, Lexington, KY 40506 USA

[31] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[32] Lehigh Univ, Bethlehem, PA 18015 USA

[33] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[34] Michigan State Univ, E Lansing, MI 48824 USA

[35] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[36] HBNI, Natl Inst Sci Educ & Res, Jatni 752050, India

[37] Natl Cheng Kung Univ, Tainan 70101, Taiwan

[38] CAS, Nucl Phys Inst, Rez 25068, Czech Republic

[39] Ohio State Univ, Columbus, OH 43210 USA

[40] Panjab Univ, Chandigarh 160014, India

[41] Penn State Univ, University Pk, PA 16802 USA

[42] NRC Kurchatov Inst, Inst High Energy Phys, Protvino 142281, Russia

[43] Purdue Univ, W Lafayette, IN 47907 USA

[44] Rice Univ, Houston, TX 77251 USA

[45] Rutgers State Univ, Piscataway, NJ 08854 USA

[46] Univ Sao Paulo, BR-05314970 Sao Paulo, Brazil

[47] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[48] Shandong Univ, Qingdao 266237, Shandong, Peoples R China

[49] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[50] Southern Connecticut State Univ, New Haven, CT 06515 USA

来源：

PHYSICAL REVIEW D | 2020年 / 101卷 / 05期

基金：

美国国家科学基金会; 新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevD.101.052004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Particle production sensitive to nonfactorizable and nonperturbative processes that contribute to the underlying event associated with a high transverse momentum (p(T)) jet in proton thorn proton collisions at root s = 200 GeV is studied with the STAR detector. Each event is divided into three regions based on the azimuthal angle with respect to the highest-p(T) jet direction: in the leading jet direction ("Toward"), opposite to the leading jet ("Away"), and perpendicular to the leading jet ("Transverse"). In the Transverse region, the average charged particle density is found to be between 0.4 and 0.6 and the mean transverse momentum, < p(T)>, between 0.5 and 0.7 GeV/c for particles with p(T) > 0.2 GeV/c at mid-pseudorapidity (vertical bar eta vertical bar < 1) and jet p(T) > 15 GeV/c. Both average particle density and < p(T)> depend weakly on the leading jet p(T). Closer inspection of the Transverse region hints that contributions to the underlying event from initial- and final-state radiation are significantly smaller in these collisions than at the higher energies, up to 13 TeV, recorded at the LHC. Underlying event measurements associated with a high-p(T) jet will contribute to our understanding of QCD processes at hard and soft scales at RHIC energies, as well as provide constraints to modeling of underlying event dynamics.

引用

页数：9

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