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arXiv · 2304.04924

Is the LHCb $P_c(4312)^+$ plausible in the GlueX $\gamma p\to J/\psi p$ total cross sections ?

Igor Strakovsky·William J. Briscoe·Eugene Chudakov·Ilya Larin·Lubomir Pentchev·Axel Schmidt·Ronald L. Workman
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Abstract

New high-statistics total cross section data for $\gamma p\to J/\psi p$ from the GLUonic EXcitation (GlueX) experiment are fitted in a search for the exotic $P_c(4312)^+$ state observed by the Large Hadron Collider beauty (LHCb) collaboration. The integrated luminosity of this GlueX experiment was about $320~\mathrm{pb^{-1}}$. The fits show that destructive interference involving an $S$-wave resonance and associated non-resonance background produces a sharp dip structure about $75~\mathrm{MeV}$ below the LHCb mass, in the same location as a similar structure is seen in the data. Limitations of the employed model and the need for improved statistics are discussed.

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Igor Strakovsky, William J. Briscoe, Eugene Chudakov, Ilya Larin, Lubomir Pentchev, Axel Schmidt, Ronald L. Workman. 2023-04-11. Is the LHCb $P_c(4312)^+$ plausible in the GlueX $\gamma p\to J/\psi p$ total cross sections ?. https://arxiv.org/abs/2304.04924

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