Published November 14, 2008 | Version v1
Journal article Metadata-only

Color Fluctuations in the Nucleon in High-Energy Scattering

Creators

  • 1. School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv (Israel)
  • 2. Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
  • 3. Department of Physics, University of Trieste INFN and ICTP Trieste, I-34014 Trieste (Italy)
  • 4. Theory Center, Jefferson Lab, Newport News, Virginia 23606 (United States)

Description

We study quantum fluctuations of the nucleon's parton densities by combining QCD factorization for hard processes with the notion of cross section fluctuations in soft diffraction. The fluctuations of the small-x gluon density are related to the ratio of inelastic and elastic vector meson production in ep scattering. A simple dynamical model explains the HERA data and predicts the x and Q2 dependence of the ratio. In pp/pp scattering, fluctuations enhance multiple hard processes (but cannot explain the Tevatron CDF data), and reduce gap survival in central exclusive diffraction

Additional details

Identifiers

DOI
10.1103/PhysRevLett.101.202003;
arXiv
arXiv:0808.0182v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
101
Journal Issue
20
Journal Page Range
p. 202003-202003.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40054109
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
COLOR MODEL; CROSS SECTIONS; DIFFRACTION; FACTORIZATION; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; GLUONS; HERA STORAGE RING; NUCLEONS; QUANTUM CHROMODYNAMICS; VECTOR MESONS
Descriptors DEC
ACCELERATORS; BARYONS; BOSONS; COHERENT SCATTERING; COMPOSITE MODELS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MESONS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL; RADIATION DETECTORS; SCATTERING; STORAGE RINGS; SYNCHROTRONS

Optional Information

Notes
(c) 2008 The American Physical Society