Dependencies of lepton angular distribution coefficients on the transverse momentum and rapidity of Z bosons produced in pp collisions at the LHC

Chang, Wen -Chen; McClellan, Randall Evan; Peng, Jen -Chieh; Teryaev, Oleg

doi:10.1103/PhysRevD.96.054020

Title: Dependencies of lepton angular distribution coefficients on the transverse momentum and rapidity of $Z$ bosons produced in $p p$ collisions at the LHC

Journal Article · 21 September 2017 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.96.054020 · OSTI ID:1404882

Chang, Wen -Chen ^[1]; McClellan, Randall Evan ^[2]; Peng, Jen -Chieh ^[3]; Teryaev, Oleg ^[4]

Academia Sinica, Taipei (Taiwan)
Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Bogoliubov Lab. of Theoretical Physics, Dubna (Russia)

Here, high precision data of lepton angular distributions for $$\gamma^*/Z$$ production in $pp$ collisions at the LHC, covering broad ranges of dilepton transverse momenta ($$q_T$$) and rapidity ($$y$$), were recently reported. Strong $$q_T$$ dependencies were observed for several angular distribution coefficients, $$A_i$$, including $$A_0 - A_4$$. Significant $$y$$ dependencies were also found for the coefficients $$A_1$$, $$A_3$$ and $$A_4$$, while $$A_0$$ and $$A_2$$ exhibit very weak rapidity dependence. Using an intuitive geometric picture we show that the $$q_T$$ and $$y$$ dependencies of the angular distributions coefficients can be well described.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 1404882

Report Number(s):: JLAB-PHY-17-2581; DOE/OR/23177-4244; arXiv:1708.05807; PRVDAQ; TRN: US1703248

Journal Information:: Physical Review D, Vol. 96, Issue 5; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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