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Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs in p ↑+p at s =200 GeV

Adamczyk, L.
•
Adkins, J. K.
•
Agakishiev, G.
altro
Zyzak, M.
2015
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We report the observation of transverse polarization-dependent azimuthal correlations in charged pion pair production with the STAR experiment in p↑+p collisions at RHIC. These correlations directly probe quark transversity distributions. We measure signals in excess of five standard deviations at high transverse momenta, at high pseudorapidities eta>0.5, and for pair masses around the mass of the rho-meson. This is the first direct transversity measurement in p+p collisions. Comparing the results to data from lepton-nucleon scattering will test the universality of these spin-dependent quantities.
DOI
10.1103/PhysRevLett.115.242501
WOS
WOS:000366106700003
Archivio
http://hdl.handle.net/11368/2942042
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84949680060
http://harvest.aps.org/bagit/articles/10.1103/PhysRevLett.115.242501/apsxml
Diritti
closed access
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2942042
Soggetti
  • transversity

  • spin

  • STAR

  • RHIC

  • polarized

Web of Science© citazioni
21
La settimana scorsa
1
Data di acquisizione
Mar 25, 2024
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