Explanation why the {theta}{sup +} is seen in some experiments and not in others
- Petersburg Nuclear Physics Institute, Gatchina, 188300 (Russian Federation)
- Institut fuer Theoretische Physik-II, Ruhr-Universitaet, D-44780 Bochum (Germany)
- Center for Nuclear Studies, Physics Department, The George Washington University, Washington, D.C. 23606 (United States)
To understand the whole set of positive and null data on the {theta}{sup +}(1530)-production, we suggest the hypothesis that multiquark hadrons are mainly generated from many-quark states, which emerge either as short-term hadron fluctuations, or as hadron remnants in hard processes. This approach allows us to describe both nonobservation of the {theta}{sup +} in current null experiments and peculiar features of its production in positive experiments. Further, we are able to propose new experiments that might be decisive for the problem of the {theta}{sup +} existence. Studies of properties and distributions of the {theta}{sup +} in such experiments can give important information on the structure of both conventional and multiquark hadrons. It would provide better insight into how QCD works.
- OSTI ID:
- 21032340
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 76, Issue 7; Other Information: DOI: 10.1103/PhysRevD.76.074013; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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