Initial-state interactions in the unpolarized Drell-Yan process
نویسندگان
چکیده
منابع مشابه
Initial - State Interactions in the Unpolarized Drell - Yan Process ∗
We show that initial-state interactions contribute to the cos 2φ distribution in unpolarized Drell-Yan lepton pair production p p and p p → `+`−X, without suppression. The asymmetry is expressed as a product of chiral-odd distributions h1 (x1, p 2 ⊥) × h ⊥ 1 (x2, k 2 ⊥), where the quark-transversity function h1 (x, p 2 ⊥) is the transverse momentum dependent, light-cone momentum distribution of...
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We show that initial state interactions violate the factorization conjecture for the Drell-Yan process order by order in perturbation theory. We also discuss the effects of elastic and inelastic initial state interactions on the observed cross sections. A Talk Presented by G. T. Bodwin at the 1981 Banff Summer School on Particles and Fields Alberta, Canada, August 16-28, 1981 * Work supported b...
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Taking into account the effect of final state interaction, we calculate the non-zero (näive) T -odd transverse momentum dependent distribution h1 (x,k 2 ⊥) of the pion in a quark-spectator-antiquark model with effective pion-quark-antiquark coupling as a dipole form factor. Using the model result we estimate the cos 2φ asymmetries in the unpolarized πN Drell-Yan process which can be expressed a...
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We develop a simple, intuitive picture of the effects, in the Drell-Yan process, of initial-state interactions between the projectile and the target. For purposes of illustration, we present specific analyses in terms of a nonrelativistic QED model. However, our principle conclusions are valid in QCD as well. We show that initial-state interactions lead to an increase in the average of the squa...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2003
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.67.054003