Accessing transversity via J/ψ production in polarized p ↑p̄↑ interactions

M. Anselmino; V. Barone; A. Drago; N. N. Nikolaev

doi:10.1016/j.physletb.2004.05.029

Accessing transversity via J/ψ production in polarized p ^↑p̄^↑ interactions

M. Anselmino, V. Barone, A. Drago, N. N. Nikolaev

Dipartimento di Scienze e Innovazione Tecnologica

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

We discuss the possibility of a direct access to transversity distributions by measuring the double transverse spin asymmetry A_TT in p ^↑p̄^↑→J/ψX→ℓ ^-ℓ⁺X processes at future GSI-HESR experiments with polarized protons and anti-protons. In the J/ψ resonance production region, with 30≲s≲45 GeV², both the cross-section and A _TT are expected to be sufficiently large to allow a measurement of h₁^q(x,M²); numerical estimates are given.

Lingua originale	Inglese
pagine (da-a)	97-104
Numero di pagine	8
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	594
Numero di pubblicazione	1-2
DOI	https://doi.org/10.1016/j.physletb.2004.05.029
Stato di pubblicazione	Pubblicato - 29 lug 2004

Accesso al documento

10.1016/j.physletb.2004.05.029

Altri file e collegamenti

Link to publication in Scopus

Cita questo

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abstract = "We discuss the possibility of a direct access to transversity distributions by measuring the double transverse spin asymmetry ATT in p ↑{\=p}↑→J/ψX→ℓ -ℓ+X processes at future GSI-HESR experiments with polarized protons and anti-protons. In the J/ψ resonance production region, with 30≲s≲45 GeV2, both the cross-section and A TT are expected to be sufficiently large to allow a measurement of h1q(x,M2); numerical estimates are given.",

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AU - Drago, A.

AU - Nikolaev, N. N.

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AB - We discuss the possibility of a direct access to transversity distributions by measuring the double transverse spin asymmetry ATT in p ↑p̄↑→J/ψX→ℓ -ℓ+X processes at future GSI-HESR experiments with polarized protons and anti-protons. In the J/ψ resonance production region, with 30≲s≲45 GeV2, both the cross-section and A TT are expected to be sufficiently large to allow a measurement of h1q(x,M2); numerical estimates are given.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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