Spin alignment of the high $p_T$ vector mesons in polarized pp collisions at high energies

Abstract

Using the same method as that used in $e^{+}{e}^{-}$ annihilation and lepton-nucleon deep-inelastic scattering, we calculate the spin alignment of vector mesons with high transverse momenta in high energy $pp$ collisions with one longitudinally polarized beam. We present the results obtained at RHIC energies. We also study the spin alignment of such vector mesons in the case of a transversely polarized proton beam and present its relation to the transversity distribution in the nucleon. Numerical results obtained using simple models for the transversity distributions are also given. These results show that there exist significant spin alignment in both cases, and they can be measured in experiments such as those at RHIC.

arXiv comment27 pages, 7 figures, submitted to Phys. Rev . D

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Cited by in corpus (9)

• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Dihadron interference fragmentation functions in proton-proton collisions
• Leading and higher twist contributions in semi-inclusive e+e- annihilation at high energies
• Tensor polarization dependent fragmentation functions and e+e-\to V πX at high energies
• Vector meson's spin alignments in high energy reactions
• Energy dependence of hadron polarization in $e^{+}{e}^{-}\to hX$ at high energies
• The Spin Alignment of Vector Mesons in High Energy pp Collisions
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Spin alignment of vector mesons in unpolarized hadron-hadron collisions at high energies