Diffractive excitation of heavy flavors: Leading twist mechanisms

Journal Article · Wed Aug 01 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.034019· OSTI ID:21027514

Kopeliovich, B Z; Potashnikova, I K ^[1]; Schmidt, Ivan ^[1]; Tarasov, A V ^[2]

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1. Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
2. Joint Institute for Nuclear Research, Dubna (Russian Federation)

Diffractive production of heavy flavors is calculated within the light-cone dipole approach. Novel leading twist mechanisms are proposed, which involve both short and long transverse distances inside the incoming hadron. Nevertheless, the diffractive cross section turns out to be sensitive to the primordial transverse momenta of projectile gluons, rather than to the hadronic size. Our calculations agree with the available data for diffractive production of charm and beauty, and with the observed weak variation of the diffraction-to-inclusive cross section ratios as function of the hard scale.

• OSTI ID: 21027514
• Journal Information: Physical Review. D, Particles Fields, Vol. 76, Issue 3; Other Information: DOI: 10.1103/PhysRevD.76.034019; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DIFFRACTION MODELS
DIPOLES
EXCITATION
FLAVOR MODEL
GLUONS
HADRONS
INCLUSIVE INTERACTIONS
LIGHT CONE
QUANTUM CHROMODYNAMICS
TRANSVERSE MOMENTUM