Sivers Effect in Dihadron Electroproduction
نویسندگان
چکیده
منابع مشابه
Sivers Effect in Dihadron Electroproduction
The Sivers effect in polarized SIDIS can be measured in two hadron production as sine modulations involving the azimuthal angles φT and φR of both the total and the relative transverse momenta of the hadron pair, complementary to the conventional single hadron studies. In this talk we briefly present the results obtained in our recent work [1] and [2]. We also present the leading order parton m...
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The Sivers effect in single hadron semi-inclusive deep inelastic scattering on a transversely polarized nucleon describes the modulation of the cross section with the sine of the azimuthal angle between the produced hadron's transverse momentum and the nucleon spin (P(h) and φ(S), respectively). This effect is attributed to the so-called Sivers parton distribution function of the nucleon. We em...
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We argue that weighted azimuthal single spin asymmetries in back-to-back jet or pion production in polarized proton-proton scattering can be written as convolutions of universal distribution and fragmentation functions with gluonic pole cross sections as hard functions. Gluonic pole cross sections are gauge-invariant weighted sums of Feynman diagrams. The weight factors are a direct consequence...
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The Sivers function is extracted from HERMES data on single spin asymmetries in semi-inclusive deeply inelastic scattering. Our analysis use a simple Gaussian model for the distribution of transverse parton momenta, together with the flavor dependence given by the leading 1/Nc approximation and a neglect of the Sivers antiquark distribution. We find that within the errors of the data these appr...
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where p(c,d)⊥ and y(c,d) are, respectively, the transverse momenta and the rapidities of the outgoing hadrons and χ is the azimuthal angle, as defined in figure 1. Moreover a complete QCD study has been recently carried out for the corresponding observable in DIS processes.2 From an experimental point of view, the azimuthal correlation in pion-pair production in hadronic collision was one of th...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2015
ISSN: 2100-014X
DOI: 10.1051/epjconf/20158502026