Hadronic decays involving heavy pentaquarks
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
70
Journal Issue
3
Date Issued
2004
Author(s)
Abstract
Recently several experiments have reported evidence for pentaquark [Formula Presented] H1 experiment at HERA-B has also reported evidence for [Formula Presented] [Formula Presented] is interpreted as a bound state of an [Formula Presented] with four other light quarks udud which is a member of the antidecuplet of flavor [Formula Presented] while [Formula Presented] is a heavy state obtained with the [Formula Presented] in [Formula Presented] being replaced by a [Formula Presented] which is a member of an antisixtet. A heavy pentaquark triplet can also be formed with a [Formula Presented] and four light quarks. Similarly heavy pentaquark antisixtet and triplet can be formed with the [Formula Presented] being replaced by a [Formula Presented] We study decay processes involving at least one heavy pentaquark using [Formula Presented] and estimate the decay widths for some decay modes. We find several relations for heavy pentaquark decays into another heavy pentaquark and a [Formula Presented] or a [Formula Presented] which can be tested in the future. The B can also decay through weak interaction to charmed heavy pentaquarks. We also study some B decay modes with a heavy pentaquark in the final states. Experiments at B factories will provide important information about the heavy pentaquark properties. © 2004 The American Physical Society.
Type
journal article