Hadronic Decays Involving Heavy Pentaquarks

Abstract

Recently several experiments have reported evidences for pentaquark ${\Theta }^{+}$. H1 experiment at HERA-B has also reported evidence for ${\Theta }_c$. ${\Theta }^{+}$ is interpreted as a bound state of an $\bar{s}$ with other four light quarks $udud$ which is a member of the anti-decuplet under flavor $SU(3{)}_f$. While ${\Theta }_c$ is a state by replacing the $\bar{s}$ in ${\Theta }^{+}$ by a $\bar{c}$. One can also form ${\Theta }_b$ by replacing the $\bar{s}$ by a $\bar{b}$. The charmed and bottomed heavy pentaquarks form triplets and anti-sixtets under $SU(3{)}_f$. We study decay processes involving at least one heavy pentaquark using $SU(3{)}_f$ and estimate the decay widths for some decay modes. We find several relations for heavy pentaquarks decay into another heavy pentaquark and a $B(B^{\ast })$ or a $D(D^{\ast })$ which can be tested in the future. $B$ can decay through weak interaction to charmed heavy pentaquarks. We also study some $B$ decay modes with a heavy pebtaquark in the final states. Experiments at the current $B$ factories can provide important information about the heavy pentaquark properties.

RevTex 20 pages. Revised version. Discussions on the recent H1 data and new references added

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Cited by in corpus (7)

• Analysis of $P_c^{+}(4380)$ and $P_c^{+}(4450)$ as pentaquark states in the molecular picture with QCD sum rules
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Pentaquark Decay Width in QCD Sum Rules
• Charm Physics - A Field Full with Challenges and Opportunities
• Light-Front Approach for Pentaquark Strong Decays
• Are the anti-charmed and bottomed pentaquarks molecular heptaquarks?
• Heavy and Light Pentaquark Chiral Lagrangian