Abstract
With a distinctive internal structure from all established hadrons, the beauty-charmed baryons $\Xi_{bc}$ can provide us with new points of view to decipher the strong interaction. In this work, we point out that the inclusive $\Xi_{bc} \to \Xi_{cc}^{++}+X$ decay is a golden channel for the experimental discovery of $\Xi_{bc}$ at the LHC. A unique feature of this process is that the $\Xi_{cc}^{++}$ is displaced, which greatly reduces the combinatorial background. A feasibility analysis is performed on the $\Xi_{bc}^+$ search, which is expected to have a longer lifetime than $\Xi_{bc}^0$ and thus a better displacement resolution. The $\Xi_{bc}^+ \to \Xi_{cc}^{++}+X$ branching ratio is calculated within the heavy diquark effective theory. Combining the $\Xi_{bc}$ production rate and the $\Xi_{cc}^{++}$ detection efficiency, we anticipate that hundreds of signal events will be collected during LHCb Run 3.
Highlights
INTRODUCTIONEspecially the Ξþccþ, have recently received much attention [1]
Heavy baryons, especially the Ξþccþ, have recently received much attention [1]
Combining the production rate of Ξbc and the detection efficiency of Ξþccþ, we anticipate that hundreds of signal events will be collected during LHCb Run 3
Summary
Especially the Ξþccþ, have recently received much attention [1]. Comparing it to the theoretical prediction [9], we find a big gap of about 3 orders of magnitude One difficulty in such exclusive searches lies in the limited production rate for Ξbc at the LHC, but a bigger challenge is due to the very low reconstruction efficiency, because a beauty typically decays with fractions of Oð10−3Þ even to the most abundant exclusive final states [9–11]. To overcome this difficulty, we propose an approach to search for Ξbc via an inclusive decay channel Ξbc → Ξþccþ þ X, where X stands for all possible particles. The proposed inclusive approach for the Ξbc search is feasible and timely for the LHCb
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