Twist-four distributions in a transversely polarized nucleon and the Drell-Yan process.

نویسندگان

  • Hoodbhoy
  • Ji
چکیده

The twist-four quark and gluon distributions in a transversely polarized nucleon are identified and relations among them are discussed by using QCD equations of motion. Their contribution, at the order of O ( 1/Q ) , to the Drell-Yan cross section in transversely polarized nucleon-nucleon collisions is calculated. Submitted to: Phys. Rev. D CTP#2203 April 1993 * This work is supported in part by funds provided by the U. S. Department of Energy (D.O.E.) under contract #DE-AC02-76ER03069. † Supported by NSF Grant INT-9122027. 0

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Twist-four Distributions in a Transversely-polarized Nucleon

The twist-four quark and gluon distributions in a transversely polarized nucleon are identified and relations among them are discussed by using QCD equations of motion. Their contribution, at the order of O ( 1/Q ) , to the Drell-Yan cross section in transversely polarized nucleon-nucleon collisions is calculated. Submitted to: Phys. Rev. D CTP#2203 April 1993 * This work is supported in part b...

متن کامل

Resummation in Transversely Polarized Drell - Yan Process

Hard processes with polarized nucleon beams enable us to study spin-dependent dynamics of QCD and the spin structure of nucleon. The helicity distribution ∆q(x) of quarks within nucleon has been measured in polarized DIS experiments, and ∆G(x) of gluons has also been estimated from the scaling violations of them. On the other hand, the transversity distribution δq(x), i.e. the distribution of t...

متن کامل

ALT in the polarized Drell-Yan process at RHIC and HERA energies

We present a leading order (LO) estimate for the longitidinal-transverse spin asymmetry (ALT ) in the nucleon-nucleon polarized Drell-Yan process at RHIC and HERA~ N energies in comparison with ALL and ATT . ALT receives contribution from g1, the transversity distribution h1, and the twist-3 distributions gT and hL. For the twist-3 contribution we use the bag model prediction evolved to a high ...

متن کامل

ALT in the Nucleon-Nucleon Polarized Drell-Yan Process

We present a leading order (LO) estimate for the longitidinal-transverse spin asymmetry (ALT ) in the nucleon-nucleon polarized Drell-Yan process at RHIC and HERA~ N energies in comparison with ALL and ATT . ALT receives contribution from g1, the transversity distribution h1, and the twist-3 distributions gT and hL. For the twist-3 contribution we use the bag model prediction evolved to a high ...

متن کامل

Double-Spin Asymmetry ALT for Polarized Drell-Yan Process in pp̄ Collisions: Wandzura-Wilczek Contribution

The longitudinal-transverse spin asymmetry ALT in the polarized Drell-Yan process depends on twist-3 quark distributions of nucleon. In addition to the contributions associated with the twist-3 operators, these distributions contain the “Wandzura-Wilczek (WW)” part, which is determined by a certain integral of twist-2 distributions. The recently obtained empirical information on the transversit...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review. D, Particles and fields

دوره 50 7  شماره 

صفحات  -

تاریخ انتشار 1994