Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at √sNN= 5.02 TeV

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題名:	Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at √sNN= 5.02 TeV
作者:	林宗泰;Chatrchyan, Serguei
貢獻者:	理學院物理學系
日期:	2014-07-23
上傳時間:	2026-04-23 14:28:07 (UTC+8)
出版者:	Springer New York;United States: Springer
摘要:	摘要： Dijet production has been measured in pPb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. A data sample corresponding to an integrated luminosity of 35 inverse-nanobarns was collected using the Compact Muon Solenoid detector at the Large Hadron Collider. The dijet transverse momentum balance, azimuthal angle correlations, and pseudorapidity distributions are studied as a function of the transverse energy in the forward calorimeters ($E_T^{4\lt \|\eta\| \lt 5.2}$). For pPb collisions, the dijet transverse momentum ratio and the width of the distribution of dijet azimuthal angle difference are comparable to the same quantities obtained from a simulated pp reference and insensitive to $E_T^{4\lt \|\eta\| \lt 5.2}$. In contrast, the mean value of the dijet pseudorapidity is found to change monotonically with increasing $E_T^{4\lt \|\eta\| \lt 5.2}$, indicating a correlation between the energy emitted at large pseudorapidity and the longitudinal motion of the dijet frame. As a result, the pseudorapidity distribution of the dijet system is compared with next-to-leading-order perturbative QCD predictions obtained from both nucleon and nuclear parton distribution functions, and the data more closely match the latter. 出版者： United States: Springer 出版日期： 2014-07-23 出處： The European physical journal. C, Particles and fields, 2014-07, Vol.74 (7) 資源來源： Academic Search Premier (via EbscoHost) 識別號： ISSN: 1434-6044 識別號： DOI: 10.1140/epjc/s10052-014-2951-y
顯示於類別:	[物理學系] 期刊論文

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