Production of b(b)over-bar at forward rapidity in p plus p collisions at √s=510 GeV

被引：0

作者：

Acharya, U. ^{[21
]}

Adare, A. ^{[11
]}

Aidala, C. ^{[43
]}

Ajitanand, N. N. ^{[61
]}

Akiba, Y. ^{[56
,57
]}

Akimoto, R. ^{[10
]}

Alfred, M. ^{[24
]}

Apadula, N. ^{[29
,62
]}

Aramaki, Y. ^{[56
]}

Asano, H. ^{[36
,56
]}

Atomssa, E. T. ^{[62
]}

Awes, T. C. ^{[52
]}

Azmoun, B. ^{[7
]}

Babintsev, V ^{[25
]}

Bai, M. ^{[6
]}

Bandara, N. S. ^{[42
]}

Bannier, B. ^{[62
]}

Barish, K. N. ^{[8
]}

Bathe, S. ^{[5
,57
]}

Bazilevsky, A. ^{[7
]}

Beaumier, M. ^{[8
]}

Beckman, S. ^{[11
]}

Belmont, R. ^{[11
,43
,50
]}

Berdnikov, A. ^{[59
]}

Berdnikov, Y. ^{[59
]}

Bichon, L. ^{[66
]}

Black, D. ^{[8
]}

Blankenship, B. ^{[66
]}

Bok, J. S. ^{[49
]}

Borisov, V ^{[59
]}

Boyle, K. ^{[57
]}

Brooks, M. L. ^{[39
]}

Bryslawskyj, J. ^{[5
,8
]}

Buesching, H. ^{[7
]}

Bumazhnov, V ^{[25
]}

Campbell, S. ^{[12
,13
,29
]}

Roman, V. Canoa ^{[62
]}

Chen, C-H ^{[57
]}

Chi, C. Y. ^{[12
,13
]}

Chiu, M. ^{[7
]}

Choi, I. J. ^{[26
]}

Choi, J. B. ^{[31
]}

Chujo, T. ^{[65
]}

Citron, Z. ^{[67
]}

Connors, M. ^{[21
]}

Csanad, M. ^{[16
]}

Csorgo, T. ^{[68
]}

Datta, A. ^{[48
]}

Daugherity, M. S. ^{[1
]}

David, G. ^{[7
,62
]}

机构：

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

[2] Augustana Univ, Dept Phys, Sioux Falls, SD 57197 USA

[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[4] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

[5] CUNY, Baruch Coll, New York, NY 10010 USA

[6] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA

[7] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA

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

[9] Charles Univ Prague, Ovocny Trh 5, Prague 11636 1, Czech Republic

[10] Univ Tokyo, Ctr Nucl Study, Grad Sch Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[11] Univ Colorado, Boulder, CO 80309 USA

[12] Columbia Univ, New York, NY 10027 USA

[13] Nevis Labs, Irvington, NY 10533 USA

[14] Czech Tech Univ, Zikova 4, Prague 16636 6, Czech Republic

[15] Debrecen Univ, Egyet Ter 1, H-4010 Debrecen, Hungary

[16] Eotvos Lorand Univ, ELTE, Pazmany Ps 1-A, H-1117 Budapest, Hungary

[17] Eszterhazy Karoly Univ, Karoly Robert Campus,Matrai Ut 36, H-3200 Gyongyos, Hungary

[18] Ewha Womans Univ, Seoul 120750, South Korea

[19] Florida A&M Univ, Tallahassee, FL 32307 USA

[20] Florida State Univ, Tallahassee, FL 32306 USA

[21] Georgia State Univ, Atlanta, GA 30303 USA

[22] Hanyang Univ, Seoul 133792, South Korea

[23] Hiroshima Univ, Higashihiroshima 7398526, Japan

[24] Howard Univ, Dept Phys & Astron, Washington, DC 20059 USA

[25] Inst High Energy Phys, State Res Ctr Russian Federat, IHEP Protvino, Protvino 142281, Russia

[26] Univ Illinois, Urbana, IL 61801 USA

[27] Russian Acad Sci, Inst Nucl Res, Prospekt 60 Letiya Oktyabrya 7a, Moscow 117312, Russia

[28] Acad Sci Czech Republ, Inst Phys, Na Slovance 2, Prague 18221 8, Czech Republic

[29] Iowa State Univ, Ames, IA 50011 USA

[30] Japan Atom Energy Agcy, Adv Sci Res Ctr, 2-4 Shirakata Shirane, Tokai, Ibaraki 3191195, Japan

[31] Jeonbuk Natl Univ, Jeonju 54896, South Korea

[32] Univ Jyvaskyla, Helsinki Inst Phys, POB 35, FI-40014 Jyvaskyla, Finland

[33] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[34] Korea Univ, Seoul 02841, South Korea

[35] Natl Res Ctr, Kurchatov Inst, Moscow 123098, Russia

[36] Kyoto Univ, Kyoto 6068502, Japan

[37] Lahore Univ Management Sci, Phys Dept, Lahore 54792, Pakistan

[38] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[39] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[40] Lund Univ, Dept Phys, Box 118, SE-22100 Lund, Sweden

[41] Univ Maryland, College Pk, MD 20742 USA

[42] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[43] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[44] Muhlenberg Coll, Allentown, PA 18104 USA

[45] Myongji Univ, Yongin 449728, Kyonggido, South Korea

[46] Nara Womens Univ, Kita Uoya Nishi, Nara 6308506, Japan

[47] Natl Res Nucl Univ, Moscow Engn Phys Inst, MEPhI, Moscow 115409, Russia

[48] Univ New Mexico, Albuquerque, NM 87131 USA

[49] New Mexico State Univ, Las Cruces, NM 88003 USA

[50] Univ North Carolina Greensboro, Phys & Astron Dept, Greensboro, NC 27412 USA

来源：

PHYSICAL REVIEW D | 2020年 / 102卷 / 09期

基金：

日本学术振兴会; 以色列科学基金会; 美国国家科学基金会;

关键词：

PRODUCTION CROSS-SECTION; DECAYS; TEV;

D O I：

10.1103/PhysRevD.102.092002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The cross section of bottom quark-antiquark (b (b) over bar) production in p + p collisions at root s = 510 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance (1.2 < vertical bar y vertical bar < 2.2). The b (b) over bar signal is extracted from like-sign dimuons by utilizing the unique properties of neutral B meson oscillation. We report a differential cross section of d sigma(b (b) over bar ->mu +/-mu +/-)/dy = 0.16 +/- 0.01 (stat) +/- 0.02 (syst) +/- 0.02 (global) nb for like-sign muons in the rapidity and p(T) ranges 1.2 < vertical bar y vertical bar < 2.2 and p(T) > 1 GeV/c, and dimuon mass of 5-10 GeV/c(2). The extrapolated total cross section at this energy for b (b) over bar production is 13.1 +/- 0.6 (stat) +/- 1.5 (syst) +/- 2.7 (global) mu b. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from b (b) over bar decays and their p(T) distributions are compared to distributions generated using PS PYTHIA6, which includes next-to-leading order processes. The azimuthal correlations and pair p(T) distribution are not very well described by PYTHIA calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting.

引用

页数：14

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