A Survey of Polarization Asymmetries Predicted by QCD

Baldracchini, F.; Craigie, N.S.; Roberto, Vito; Socolovsky, M.

doi:10.1002/prop.19810291102

Cited by 49 publications

(49 citation statements)

References 24 publications

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“…The Λ 0 polarisation is, in fact, easily measured by studying the angular distribution of the Λ 0 → pπ decay. The transverse polarisation of Λ's produced in hard processes was studied a long time ago in [297,298] and more recently in [126]. From the phenomenological viewpoint, the main problem is that, in order to compute the quantity (9.2.1), one needs to know the fragmentation functions ∆ T D h/q (z, Q 2 ) besides the transversity distributions.…”

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confidence: 99%

Transverse polarisation of quarks in hadrons

Barone¹,

Drago²,

Ratcliffe³

2002

Physics Reports

526

648

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We review the present state of knowledge regarding the transverse polarisation (or transversity) distributions of quarks. After some generalities on transverse polarisation, we formally define the transversity distributions within the framework of a classification of all leading-twist distribution functions. We describe the QCD evolution of transversity at leading and next-to-leading order. A comprehensive treatment of non-perturbative calculations of transversity distributions (within the framework of quark models, lattice QCD and QCD sum rules) is presented. The phenomenology of transversity (in particular, in Drell-Yan processes and semi-inclusive leptoproduction) is discussed in some detail. Finally, the prospects for future measurements are outlined.

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confidence: 99%

Transverse polarisation of quarks in hadrons

Barone¹,

Drago²,

Ratcliffe³

2002

Physics Reports

526

648

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“…are then obtained by straightforwardly solving the evolution equations using the appropriate LO kernels [5,14,15]. It should be noted that the inequality (7) is preserved under evolution in LO and NLO (MS), as was shown in [12,13,35].…”

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confidence: 99%

Accessing transversity in double-spin asymmetries at the BNL RHIC

2002

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We give upper bounds for transverse double-spin asymmetries in polarized proton-proton collisions by saturating the positivity constraint for the transversity densities at a low hadronic resolution scale. We consider prompt photon, jet, pion, and heavy flavor production at the BNL Relativistic Heavy Ion Collider (RHIC). Estimates of the expected statistical accuracy for such measurements are presented, taking into account the acceptance of the RHIC detectors.

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“…was derived in [26,20,27]. The identity of δP (T ), (0) qq,± and δP (S), (0) qq,± is a manifestation of the so-called Gribov-Lipatov relation (GLR) [28] which connects spacelike and time-like structure functions within their respective physical regions (ξ < 1).…”

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confidence: 99%