Wigner function of produced particles in string fragmentation

Journal Article · Sun Nov 15 00:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.054917· OSTI ID:21296527

Wong, Cheuk-Yin ^[1]

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1. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

I show that quantum chromodynamics in four dimensions (QCD4) with transverse confinement can be approximately compactified into QCD2 with a transverse quark mass m{sub T} that is obtained by solving a set of coupled transverse eigenvalue equations. In the limits of a strong coupling and a large number of flavors, QCD2 further admits Schwinger QED2-type bosonized solutions. I therefore examine phenomenologically the space-time dynamics of particles produced in string fragmentation by studying the Wigner function of bosons produced in Schwinger QED2, which mimics many features of string fragmentation in quantum chromodynamics. I find that particles with momenta in different regions of the rapidity plateau are produced at the initial moment of string fragmentation as a quark pulls away from an antiquark at high energies, in contrast to classical depictions of string fragmentation with longitudinal space-momentum-time ordering.

• OSTI ID: 21296527
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 80, Issue 5; Other Information: DOI: 10.1103/PhysRevC.80.054917; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIQUARKS
BOSONS
COMPACTIFICATION
EIGENVALUES
EQUATIONS
FLAVOR MODEL
FOUR-DIMENSIONAL CALCULATIONS
FRAGMENTATION
MASS
MATHEMATICAL SOLUTIONS
PARTICLE RAPIDITY
PARTICLES
QUANTUM CHROMODYNAMICS
SPACE-TIME
STRONG-COUPLING MODEL