The Experimental Search for Pentaquark
P. Rossi (for the CLAS collaboration)

TL;DR
This paper reviews experimental efforts to detect the pentaquark, focusing on evidence for the $ heta^+$ resonance, contrasting positive findings with null results, and discussing ongoing and future experiments at Jefferson Lab.
Contribution
It provides a comprehensive overview of experimental searches for the pentaquark, highlighting recent evidence and upcoming experiments in the field.
Findings
Evidence for the $ heta^+$ resonance with mass 1.52-1.55 GeV
Null results from some high-energy experiments
Ongoing and planned second-generation experiments at Jefferson Lab
Abstract
The existence of an anti-decuplet of pentaquark particles has been predicted some year ago within the chiral soliton model. In the last year, several experimental groups have reported evidence for a S=+1 baryon resonance, with mass ranging from 1.52 and 1.55 GeV and width less than 25 MeV, by looking at the invariant mass of the system. This resonance, has been identified with the lowest mass of the anti-decuplet, the . At the same time, there are a number of experiment, mostly at high energies, that report null results. An overview of the experimental results so far obtained will be given here together with a review of the second generation experiments currently ongoing and planned at Jefferson Lab Hall B.
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