Towards a model independent approach to fragmentation functions

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.014019· OSTI ID:21254702

Christova, Ekaterina; Leader, Elliot ^[1]

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1. Institute for Nuclear Research and Nuclear Energy, Sofia (Bulgaria)

We show that the difference cross sections in unpolarized semi-inclusive deep inelastic scattering e+N{yields}e+h+X and pp hadron production p+p{yields}h+X determine independently in a model independent way, in any order in QCD, the two fragmentation functions (FFs): D{sub u}{sup h-h} and D{sub d}{sup h-h}, h={pi}{sup {+-}}, K{sup {+-}} or a sum over charged hadrons. If both K{sup {+-}} and K{sub s}{sup 0} are measured, then e{sup +}e{sup -}{yields}K+X, e+N{yields}e+K+X, and p+p{yields}K+X present independent measurements of just one FF: D{sub u-d}{sup K{sup +}}{sup +K{sup -}}. The above results allow one to test the existing parametrizations, obtained with various different assumptions about the FFs, and to test the Q{sup 2} evolution and factorization.

• OSTI ID: 21254702
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 1; Other Information: DOI: 10.1103/PhysRevD.79.014019; (c) 2009 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
DEEP INELASTIC SCATTERING
DIFFERENTIAL CROSS SECTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
FACTORIZATION
FRAGMENTATION
FUNCTIONS
HADRONS
KAONS MINUS
KAONS NEUTRAL
KAONS PLUS
PARTICLE PRODUCTION
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
RADIATIVE DECAY