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Titolo:
Perturbative color transparency in electroproduction experiments - art. no. 113009
Autore:
Kundu, B; Samuelsson, J; Jain, P; Ralston, JP;
Indirizzi:
Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India IndianInst Technol Kanpur Uttar Pradesh India 208016 ttar Pradesh, India Univ Lund, Dept Theoret Phys, S-22362 Lund, Sweden Univ Lund Lund SwedenS-22362 d, Dept Theoret Phys, S-22362 Lund, Sweden Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA Univ Kansas Lawrence KS USA 66045 t Phys & Astron, Lawrence, KS 66045 USA
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 11, volume: 6211, anno: 2000,
pagine: 3009 -
SICI:
0556-2821(200012)6211:11<3009:PCTIEE>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
PION FORM-FACTOR; LARGE-MOMENTUM-TRANSFER; QCD SUM-RULES; EXCLUSIVE PROCESSES; NUCLEAR TRANSPARENCY; ASYMPTOTIC-BEHAVIOR; SUDAKOV SUPPRESSION; PROTON SCATTERING; CROSS-SECTIONS; PP REACTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Kundu, B Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India Indian Inst Technol Kanpur Uttar Pradesh India 208016 esh, India
Citazione:
B. Kundu et al., "Perturbative color transparency in electroproduction experiments - art. no. 113009", PHYS REV D, 6211(11), 2000, pp. 3009

Abstract

We calculate quasi-exclusive scattering of a virtual photon and a proton or pion in nuclear targets. This is the First complete calculation of "colortransparency" and "nuclear filtering" in perturbative QCD. The calculationincludes full integrations over hard interaction kernels and distribution amplitudes in Feynman-x fractions and transverse spatial separation space b. Sudakov effects depending on b and the momentum transfer Q(2) are included. Attenuation of the hadronic states propagating through the medium is calculated using an eikonal Glauber formalism. Nuclear correlations are included explicitly, We find that the color transparency ratio is comparatively insensitive to theoretical uncertainties inherent in perturbative formalism,such as choice of infrared cutoff scales. However, the Q(2) dependence of the transparency ratio is found to depend sensitively on the model of the distribution amplitude, with end-point-dominated models failing to be dominated by short distance. Color transparency experiments should provide an excellent test of the underlying theoretical assumptions used in the PQCD calculations.

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Documento generato il 31/03/20 alle ore 03:00:25