Charged jet cross section and fragmentation in proton-proton collisions at root S=7 TeV

doi:10.1103/PhysRevD.99.012016

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	Charged jet cross section and fragmentation in proton-proton collisions at root S=7 TeV
	Acharya, S ; Adamova, D ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z ; Ahn, SU
刊名	PHYSICAL REVIEW D
	2019
卷号	99 期号:1 页码:—
关键词	TRANSVERSE-MOMENTUM PP COLLISIONS PB COLLISIONS PARTICLE
ISSN号	2470-0010
DOI	10.1103/PhysRevD.99.012016
文献子类	期刊论文
英文摘要	We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy root S = 7 TeV. Jets with pseudorapidity vertical bar eta vertical bar < 0.5 are reconstructed from charged particles using the anti-k(T) jet-finding algorithm with a resolution parameter R = 0.4. The jet cross section is measured in the transverse momentum interval 5 <= p(T)(ch jet) < 100 GeV/c. Jet fragmentation is studied measuring the scaled transverse momentum spectra of the charged constituents of jets in four intervals of jet transverse momentum between 5 and 30 GeV/c. The measurements are compared to calculations from the PYTHIA model as well as next-to-leading-order perturbative QCD calculations with POWHEG+PYTHIA8. The charged jet cross section is well described by POWHEG for the entire measured range of p(T)(ch jet). For p(T)(ch jet) > 40 GeV/c, the PYTHIA calculations also agree with the measured charged jet cross section. PYTHIA6 simulations describe the fragmentation distributions to 15%. Larger discrepancies are observed for PYTHIA8.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31507]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab Fdn, Yerevan, Armenia; 2.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine; 3.Bose Inst, Dept Phys, Kolkata, India; 4.Bose Inst, CAPSS, Kolkata, India; 5.Budker Inst Nucl Phys, Novosibirsk, Russia; 6.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA USA; 7.Cent China Normal Univ, Wuhan, Hubei, Peoples R China; 8.Ctr Calcul, IN2P3, Lyon, France; 9.Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba; 10.Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico;
推荐引用方式 GB/T 7714	Acharya, S,Adamova, D,Adler, A,et al. Charged jet cross section and fragmentation in proton-proton collisions at root S=7 TeV[J]. PHYSICAL REVIEW D,2019,99(1):—.
APA	Acharya, S.,Adamova, D.,Adler, A.,Adolfsson, J.,Aggarwal, MM.,...&Zou, S.(2019).Charged jet cross section and fragmentation in proton-proton collisions at root S=7 TeV.PHYSICAL REVIEW D,99(1),—.
MLA	Acharya, S,et al."Charged jet cross section and fragmentation in proton-proton collisions at root S=7 TeV".PHYSICAL REVIEW D 99.1(2019):—.