Published April 2002 | Version v1
Report Metadata-only

Expanding running coupling effects in the hard Pomeron

Creators

  • 1. INFN Sezione di Firenze, Sesto Fiorentino, FI (Italy)
  • 2. Universita di Firenze, Sesto Fiorentino, FI (Italy). Dipt. di Fisica
  • 3. Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
  • 4. Paris-6 Univ., 75 (France). Lab. de Physique Theorique et Hautes Energies
  • 5. Paris-7 Univ., 75 (France). Lab. de Physique Theorique et Hautes Energies
  • 6. Henryk Niewodniczanski Inst. of Nuclear Physics, Cracow (Poland)

Description

We study QCD hard processes at scales of order k2 >> Λ2 in the limit in which the beta-function coefficient b is taken to be small, but anti ags(k2) is kept fixed. The (nonperturbative) Pomeron is exponentially suppressed in this limit, making it possible to define purely perturbative high-energy Green's functions. The hard Pomeron exponent acquires diffusion and running coupling corrections which can be expanded in the b parameter and turn out to be dependent on the effective coupling b anti ags2Y. We provide a general setup for this b-expansion and we calculate the first few terms both analytically and numerically. (orig.)

Availability note (English)

Available from TIB Hannover: RA 2999(02-049)

Additional details

Publishing Information

Imprint Pagination
36 p.
ISSN
0418-9833
Report number
DESY--02-049

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
33047935
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
COUPLING CONSTANTS; GREEN FUNCTION; PERTURBATION THEORY; POMERANCHUK PARTICLES; POWER SERIES; QUANTUM CHROMODYNAMICS; RENORMALIZATION
Descriptors DEC
BOSONS; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; HADRONS; MESONS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SERIES EXPANSION

Optional Information

Secondary number(s)
DFF--385/04/02; LPTHE--02-23; HEP-PH--0204282