Heavy Quark Fluorescence

Journal Article · Fri Jul 09 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.022003· OSTI ID:21413509

Torres-Rincon, Juan M; Llanes-Estrada, Felipe J ^[1]

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1. Departamento de Fisica Teorica I, Universidad Complutense de Madrid, 28040 Madrid (Spain)

Heavy hadrons containing heavy quarks (for example, {Upsilon} mesons) feature a scale separation between the heavy-quark mass and the QCD scale that controls the effective masses of lighter constituents. As in ordinary molecules, the deexcitation of the lighter, faster degrees of freedom leaves the velocity distribution of the heavy quarks unchanged, populating the available decay channels in qualitatively predictable ways. Automatically an application of the Franck-Condon principle of molecular physics explains several puzzling results of {Upsilon}(5S) decays as measured by the Belle Collaboration, such as the high rate of B{sub s}*B{sub s}* versus B{sub s}*B{sub s} production, the strength of three-body B{sup *}B{pi} decays, or the dip in B momentum shown in these decays. We argue that the data show the first Sturm-Liouville zero of the {Upsilon}(5S) quantum-mechanical squared wave function and provide evidence for a largely bb composition of this meson.

• OSTI ID: 21413509
• Journal Information: Physical Review Letters, Vol. 105, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.105.022003; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
B QUARKS
C QUARKS
DE-EXCITATION
DEGREES OF FREEDOM
EFFECTIVE MASS
FLUORESCENCE
FRANCK-CONDON PRINCIPLE
MOLECULES
QUANTUM CHROMODYNAMICS
QUANTUM MECHANICS
T QUARKS
THREE-BODY PROBLEM
VECTOR MESONS
VELOCITY
WAVE FUNCTIONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
ELEMENTARY PARTICLES
EMISSION
ENERGY-LEVEL TRANSITIONS
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
LUMINESCENCE
MANY-BODY PROBLEM
MASS
MECHANICS
MESONS
PHOTON EMISSION
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARKS
TOP PARTICLES