We calculate in the next-to-leading approximation the nonforward quark impact factors for both singlet and octet color representations in the t channel. The integral representation of the octet impact factor in the general case of arbitrary space-time dimension and massive quark flavors is used to check the so-called ‘‘second bootstrap condition’’ for gluon Reggeization at the next-to-leading logarithmic approximation in perturbative QCD. We find that it is satisfied for both helicity conserving and nonconserving parts. The integrations are then performed for the explicit calculation of the impact factors in the massless quark case.

Quark impact factors

PAPA, Alessandro
2000-01-01

Abstract

We calculate in the next-to-leading approximation the nonforward quark impact factors for both singlet and octet color representations in the t channel. The integral representation of the octet impact factor in the general case of arbitrary space-time dimension and massive quark flavors is used to check the so-called ‘‘second bootstrap condition’’ for gluon Reggeization at the next-to-leading logarithmic approximation in perturbative QCD. We find that it is satisfied for both helicity conserving and nonconserving parts. The integrations are then performed for the explicit calculation of the impact factors in the massless quark case.
2000
QCD in the high-energy limit; Perturbative QCD; BFKL approach
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/124834
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 66
  • ???jsp.display-item.citation.isi??? 60
social impact