Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00488717" target="_blank" >RIV/61389005:_____/18:00488717 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/18:00319489
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.97.032004" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.97.032004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.97.032004" target="_blank" >10.1103/PhysRevD.97.032004</a>
Alternative languages
Result language
angličtina
Original language name
Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV
Original language description
We report the first measurements of transverse single-spin asymmetries for inclusive jet and jet + pi(+/-) production at midrapidity from transversely polarized proton-proton collisions at root s = 500 GeV. The data were collected in 2011 with the STAR detector sampled from 23 pb(-1) integrated luminosity with an average beam polarization of 53%. Asymmetries are reported for jets with transverse momenta 6 < p(T) < 55 GeV/c and pseudorapidity vertical bar eta vertical bar < 1. Presented are measurements of the inclusive-jet azimuthal transverse single-spin asymmetry, sensitive to twist-3 initial-state quark-gluon correlators. The Collins asymmetry, sensitive to quark transversity coupled to the polarized Collins fragmentation function. The first measurement of the 'Collins-like' asymmetry, sensitive to linearly polarized gluons. Within the present statistical precision, inclusive-jet and Collins-like asymmetries are small, with the latter allowing the first experimental constraints on gluon linear polarization in a polarized proton. At higher values of jet transverse momenta, we observe the first nonzero Collins asymmetries in polarized-proton collisions, with a statistical significance of greater than 5 sigma. The results span a range of x similar to results from semi-inclusive deep-inelastic scattering but at much higher Q(2). The Collins results enable tests of universality and factorization breaking in the transverse momentum-dependent formulation of perturbative quantum chromodynamics.
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
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/EF16_013%2F0001569" target="_blank" >EF16_013/0001569: Brookhaven National Laboratory - participation of the Czech Republic</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
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 D
ISSN
2470-0010
e-ISSN
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Volume of the periodical
97
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
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UT code for WoS article
000424057200002
EID of the result in the Scopus database
2-s2.0-85043399656