Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00490720" target="_blank" >RIV/61389005:_____/18:00490720 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21340/18:00328168
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.physletb.2018.02.069" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2018.02.069</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2018.02.069" target="_blank" >10.1016/j.physletb.2018.02.069</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV
Popis výsledku v původním jazyce
The transversity distribution, which describes transversely polarized quarks in transversely polarized nucleons, is a fundamental component of the spin structure of the nucleon, and is only loosely constrained by global fits to existing semi-inclusive deep inelastic scattering (SIDIS) data. In transversely polarized p up arrow + p collisions it can be accessed using transverse polarization dependent fragmentation functions which give rise to azimuthal correlations between the polarization of the struck parton and the final state scalar mesons. nThis letter reports on spin dependent di-hadron correlations measured by the STAR experiment. The new dataset corresponds to 25 pb(-1) integrated luminosity of p up arrow + p collisions at root s = 500 GeV, an increase of more than a factor of ten compared to our previous measurement at root s = 200 GeV. Non-zero asymmetries sensitive to transversity are observed at a Q(2) of several hundred GeV and are found to be consistent with the former measurement and a model calculation. We expect that these data will enable an extraction of transversity with comparable precision to current SIDIS datasets but at much higher momentum transfers where subleading effects are suppressed.
Název v anglickém jazyce
Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV
Popis výsledku anglicky
The transversity distribution, which describes transversely polarized quarks in transversely polarized nucleons, is a fundamental component of the spin structure of the nucleon, and is only loosely constrained by global fits to existing semi-inclusive deep inelastic scattering (SIDIS) data. In transversely polarized p up arrow + p collisions it can be accessed using transverse polarization dependent fragmentation functions which give rise to azimuthal correlations between the polarization of the struck parton and the final state scalar mesons. nThis letter reports on spin dependent di-hadron correlations measured by the STAR experiment. The new dataset corresponds to 25 pb(-1) integrated luminosity of p up arrow + p collisions at root s = 500 GeV, an increase of more than a factor of ten compared to our previous measurement at root s = 200 GeV. Non-zero asymmetries sensitive to transversity are observed at a Q(2) of several hundred GeV and are found to be consistent with the former measurement and a model calculation. We expect that these data will enable an extraction of transversity with comparable precision to current SIDIS datasets but at much higher momentum transfers where subleading effects are suppressed.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
<a href="/cs/project/EF16_013%2F0001569" target="_blank" >EF16_013/0001569: Brookhavenská národní laboratoř - účast České republiky</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physics Letters. B
ISSN
0370-2693
e-ISSN
—
Svazek periodika
780
Číslo periodika v rámci svazku
5
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
8
Strana od-do
332-339
Kód UT WoS článku
000432187800052
EID výsledku v databázi Scopus
2-s2.0-85043576764