1205.0117 (Hai-Yang Cheng et al.)

Possibly New Charmed Baryon States from $\bar B^0\to p\bar p D^{(*)0}$
Decays    [PDF]

Hai-Yang Cheng, C. Q. Geng, Y. K. Hsiao

Based on the perturbative QCD counting rules, we fit the invariant mass spectra of $D^{(*)0}p$ in $\bar B^0\to p\bar p D^{(*)0}$ decays measured by BABAR. We find that some peaks in the spectra arise from the charmed baryon states denoted by ${\bf B_c}$ through the 2-step processes of $\bar B^0\to {\bf B_c^+}(\to D^{(*)0} p)\bar p$. In addition to the established states $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$, two of them, namely, ${\bf B_c}(2820)^+$ and ${\bf B_c}(3280)^+$, may be already revealed by experiments, while the rest, identified as ${\bf B_{c}}(3000)^+$, ${\bf B_{c}}(3100)^+$, ${\bf B_{c}}(3120)^+$, ${\bf B_{c}}(3200)^+$, and ${\bf B_{c}}(3320)^+$, can be viewed as an indication of new heavy charmed baryons.

View original: http://arxiv.org/abs/1205.0117