Nonperturbative-transverse-momentum broadening in dihadron angular correlations in sNN =200 GeV proton-nucleus collisions
Aidala, C. ; Oskarsson, Anders LU ; Silvermyr, David LU
and Zou, L.
(2019)
In Physical Review C
99(4).
- Abstract
- The PHENIX collaboration has measured high-pT dihadron correlations in p+p, p+Al, and p+Au collisions at sNN=200 GeV. The correlations arise from inter- and intrajet correlations and thus have sensitivity to nonperturbative effects in both the initial and final states. The distributions of pout, the transverse-momentum component of the associated hadron perpendicular to the trigger hadron, are sensitive to initial- and final-state transverse momenta. These distributions are measured multidifferentially as a function of xE, the longitudinal momentum fraction of the associated hadron with respect to the trigger hadron. The near-side pout widths, sensitive to fragmentation transverse momentum, show no significant broadening between p+Au,... (More)
- The PHENIX collaboration has measured high-pT dihadron correlations in p+p, p+Al, and p+Au collisions at sNN=200 GeV. The correlations arise from inter- and intrajet correlations and thus have sensitivity to nonperturbative effects in both the initial and final states. The distributions of pout, the transverse-momentum component of the associated hadron perpendicular to the trigger hadron, are sensitive to initial- and final-state transverse momenta. These distributions are measured multidifferentially as a function of xE, the longitudinal momentum fraction of the associated hadron with respect to the trigger hadron. The near-side pout widths, sensitive to fragmentation transverse momentum, show no significant broadening between p+Au, p+Al, and p+p. The away-side nonperturbative pout widths are found to be broadened in p+Au when compared to p+p; however, there is no significant broadening in p+Al compared to p+p collisions. The data also suggest that the away-side pout broadening is a function of Ncoll, the number of binary nucleon-nucleon collisions, in the interaction. The potential implications of these results with regard to initial- and final-state transverse-momentum broadening and energy loss of partons in a nucleus, among other nuclear effects, are discussed. © 2019 authors. Published by the American Physical Society. Funded by SCOAP 3 . (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/76e556db-1aa2-4e42-ae34-b5a7a8585790
- author
- Aidala, C.
; Oskarsson, Anders
LU
; Silvermyr, David
LU
and Zou, L.
- author collaboration
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C
- volume
- 99
- issue
- 4
- article number
- 044912
- publisher
- American Physical Society
- external identifiers
-
- scopus:85064855873
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.99.044912
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 8 May 2019
- id
- 76e556db-1aa2-4e42-ae34-b5a7a8585790
- date added to LUP
- 2019-05-08 12:29:13
- date last changed
- 2023-04-09 09:55:02
@article{76e556db-1aa2-4e42-ae34-b5a7a8585790,
abstract = {{The PHENIX collaboration has measured high-pT dihadron correlations in p+p, p+Al, and p+Au collisions at sNN=200 GeV. The correlations arise from inter- and intrajet correlations and thus have sensitivity to nonperturbative effects in both the initial and final states. The distributions of pout, the transverse-momentum component of the associated hadron perpendicular to the trigger hadron, are sensitive to initial- and final-state transverse momenta. These distributions are measured multidifferentially as a function of xE, the longitudinal momentum fraction of the associated hadron with respect to the trigger hadron. The near-side pout widths, sensitive to fragmentation transverse momentum, show no significant broadening between p+Au, p+Al, and p+p. The away-side nonperturbative pout widths are found to be broadened in p+Au when compared to p+p; however, there is no significant broadening in p+Al compared to p+p collisions. The data also suggest that the away-side pout broadening is a function of Ncoll, the number of binary nucleon-nucleon collisions, in the interaction. The potential implications of these results with regard to initial- and final-state transverse-momentum broadening and energy loss of partons in a nucleus, among other nuclear effects, are discussed. © 2019 authors. Published by the American Physical Society. Funded by SCOAP 3 .}},
author = {{Aidala, C. and Oskarsson, Anders and Silvermyr, David and Zou, L.}},
issn = {{2469-9985}},
language = {{eng}},
number = {{4}},
publisher = {{American Physical Society}},
series = {{Physical Review C}},
title = {{Nonperturbative-transverse-momentum broadening in dihadron angular correlations in sNN =200 GeV proton-nucleus collisions}},
url = {{http://dx.doi.org/10.1103/PhysRevC.99.044912}},
doi = {{10.1103/PhysRevC.99.044912}},
volume = {{99}},
year = {{2019}},
}