Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs in p↑+p at s√=200 GeV (CROSBI ID 225196)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Adamczyk, L. ; ... ; Planinić, Mirko ; Poljak, Nikola et al.
engleski
Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs in p↑+p at s√=200 GeV
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 5 standard deviations at high transverse momenta, at high pseudorapidities η>0.5, and for pair masses around the mass of the ρ meson. This is the first direct transversity measurement in p+p collisions.
STAR ; correlations
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Podaci o izdanju
115 (24)
2015.
242501-1-242501-11
objavljeno
0031-9007
10.1103/PhysRevLett.115.242501