Energy Independence of the Collins Asymmetry in pup arrowp Collisions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00389107" target="_blank" >RIV/68407700:21340/25:00389107 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/jgsw-zhny" target="_blank" >https://doi.org/10.1103/jgsw-zhny</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/jgsw-zhny" target="_blank" >10.1103/jgsw-zhny</a>
Alternative languages
Result language
angličtina
Original language name
Energy Independence of the Collins Asymmetry in pup arrowp Collisions
Original language description
The STAR experiment reports new, high-precision measurements of the transverse single-spin asymmetries for pi(+/-) within jets, namely the Collins asymmetries, from transversely polarized p(up arrow)p collisions at root s = 510 GeV. The energy-scaled distribution of jet transverse momentum, x(T) = 2p(T,jet)/root s, shows a remarkable consistency for Collins asymmetries of pi(+/-) in jets between root s = 200 GeV and 510 GeV. This indicates that the Collins asymmetries are nearly energy independent, with, at most, a very weak scale dependence in p(up arrow)p collisions. These results extend to high-momentum scales (Q(2) <= 3400 GeV2) and enable unique tests of evolution and universality in the transverse-momentum-dependent formalism, thus providing important constraints for the Collins fragmentation functions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LM2023034" target="_blank" >LM2023034: Brookhaven National Laboratory - Participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
135
Issue of the periodical within the volume
26
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
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UT code for WoS article
001670451400001
EID of the result in the Scopus database
2-s2.0-105026237573