The QCD dynamics of tetraquark production

Journal Article · Thu Jun 18 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.91.114025· OSTI ID:1179172

Brodsky, Stanley J. ^[1]; Lebed, Richard F. ^[2]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
2. Arizona State Univ., Tempe, AZ (United States)

We use the twist dimensions of the operators underlying the dynamical behavior of exclusive production processes as a tool for determining the structure of exotic heavy-quark states such as the Z⁺_c(4430) tetraquark. The resulting counting rules predict distinctive falloffs of the cross sections in center-of-mass energy, thus distinguishing whether the tetraquarks are segregated into di-meson molecules, diquark-antidiquark pairs, or more democratically arranged four-quark states. Additionally, we propose straightforward methods of experimentally producing additional exotic multiquark states.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1179172
• Report Number(s): SLAC-PUB-16259; PRVDAQ; arXiv:1505.00803
• Journal Information: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 91, Issue 11; ISSN 1550-7998
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

phenomenology-HEP
HEPPH
exotic mesons
tetraquarks
diquarks