Determining Pentaquark Quantum Numbers from Strong Decays
Journal Article
·
· Physics Letters B
OSTI ID:836629
Assuming that the recently observed {Theta}{sup +} and {Xi}{sup --} are members of an anti-decuplet of SU(3), decays to ground state baryons and mesons are calculated using an effective Lagrangian which incorporates chiral and SU(3) symmetry. We consider the possible quantum number assignments J{sup {Pi}} = 1/2 {sup {+-}} {center_dot} 3/2 {sup {+-}} and calculate ratios of partial widths. The branching ratios of exotic cascades can be used to discriminate between even and odd parity pentaquarks.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- US Department of Energy; USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 836629
- Report Number(s):
- JLAB-THY-04-70; DOE/ER/40150-3120; hep-ph/0401107
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Journal Issue: 1-2 Vol. 588
- Country of Publication:
- United States
- Language:
- English
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