Measurement of groomed jet substructure observables in p plus p collisions at root s=200 GeV with STAR
文献类型：期刊论文
| 作者 | Adam, J.23; Adamczyk, L.19; Adams, J. R.55; Adkins, J. K.46; Agakishiev, G.44; Aggarwal, M. M.57; Ahammed, Z.7; Alekseev, I20,51; Anderson, D. M.13; Aparin, A.44 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2020-12-10 |
| 卷号 | 811页码:10 |
| ISSN号 | 0370-2693 |
| 关键词 | Jet substructure SoftDrop Splitting function Groomed jet radius |
| DOI | 10.1016/j.physletb.2020.135846 |
| 通讯作者 | Adam, J.(star-publication@bnl.gov) |
| 英文摘要 | In this letter, measurements of the shared momentum fraction (z(g)) and the groomed jet radius (R-g), as defined in the SoftDrop algorithm, are reported in p+p collisions at root s = 200 GeV collected by the STAR experiment. These substructure observables are differentially measured for jets of varying resolution parameters from R = 0.2 - 0.6 in the transverse momentum range 15 < p(T, jet) < 60 GeV/c. These studies show that, in the p(T, jet) range accessible at root s = 200 GeV and with increasing jet resolution parameter and jet transverse momentum, the zg distribution asymptotically converges to the DGLAP splitting kernel for a quark radiating a gluon. The groomed jet radius measurements reflect a momentum-dependent narrowing of the jet structure for jets of a given resolution parameter, i.e., the larger the p(T,jet), the narrower the first splitting. For the first time, these fully corrected measurements are compared to Monte Carlo generators with leading order QCD matrix elements and leading log in the parton shower, and to state-of-the-art theoretical calculations at next-to-leading-log accuracy. We observe that PYTHIA 6 with parameters tuned to reproduce RHIC measurements is able to quantitatively describe data, whereas PYTHIA 8 and HERWIG 7, tuned to reproduce LHC data, are unable to provide a simultaneous description of both z(g) and R-g, resulting in opportunities for fine parameter tuning of these models for p+p collisions at RHIC energies. We also find that the theoretical calculations without non-perturbative corrections are able to qualitatively describe the trend in data for jets of large resolution parameters at high p(T,jet), but fail at small jet resolution parameters and low jet transverse momenta. (C) 2020 The Author(s). Published by Elsevier B.V. |
| WOS关键词 | SCATTERING |
| 资助项目 | RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; National Research Foundation of Korea ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy of the Government of India ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie(BMBF) ; Helmholtz Association |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000612225400002 |
| 资助机构 | RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; National Research Foundation of Korea ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy of the Government of India ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie(BMBF) ; Helmholtz Association |
| 源URL | [http://119.78.100.186/handle/113462/138066]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Adam, J. |
| 作者单位 | 1.Creighton Univ, Omaha, NE 68178 USA 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 4.Yale Univ, New Haven, CT 06520 USA 5.Wayne State Univ, Detroit, MI 48201 USA 6.Warsaw Univ Technol, PL-00661 Warsaw, Poland 7.Variable Energy Cyclotron Ctr, Kolkata 700064, India 8.Valparaiso Univ, Valparaiso, IN 46383 USA 9.US Naval Acad, Annapolis, MD 21402 USA 10.Univ Tsukuba, Tsukuba, Ibaraki 3058571, Japan |
| 推荐引用方式 GB/T 7714 | Adam, J.,Adamczyk, L.,Adams, J. R.,et al. Measurement of groomed jet substructure observables in p plus p collisions at root s=200 GeV with STAR[J]. PHYSICS LETTERS B,2020,811:10. |
| APA | Adam, J..,Adamczyk, L..,Adams, J. R..,Adkins, J. K..,Agakishiev, G..,...&Zyzak, M..(2020).Measurement of groomed jet substructure observables in p plus p collisions at root s=200 GeV with STAR.PHYSICS LETTERS B,811,10. |
| MLA | Adam, J.,et al."Measurement of groomed jet substructure observables in p plus p collisions at root s=200 GeV with STAR".PHYSICS LETTERS B 811(2020):10. |
入库方式： OAI收割
来源：近代物理研究所
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