[Clas_hadron] [EXTERNAL] Abstract Submission of the DNP meeting

[Shrestha, Utsav]

Dear all,

I wanted to circulate my abstract for the DNP meeting 2021 to the Hadron Spectroscopy Working Group at CLAS.  I have attached the abstract to this email. For a quick view, the abstract reads as follows:

Photoproduction of $\Lambda*$ Resonances Using the CLAS Detector
Much is known about the photoproduction of the hyperon resonances $\Lambda(1405)1/2^-$ and $\Lambda(1520)3/2^-$, but little is known about photoproduction to the higher-mass resonances $\Lambda(1670)1/2^-$ and $\Lambda(1690)3/2^-$.  Both pairs of resonances are spin-orbit partners and are rated as 4-star (well-known) by the Particle Data Group.  In the quark model, the $\Lambda(1405)$
and $\Lambda(1520)$ resonances are assigned to the SU(3) singlet, where the $\Lambda(1670)$ and $\Lambda(1690)$ are assigned to the octet. Using photoproduction data from the CLAS detector at Jefferson Lab, the $\Lambda(1520)$ has been studied using two exclusive channels, $\Sigma^+ \pi^-$ and $\Sigma^- \pi^+$, from the detected $K^+$, $\pi^+$, and $\pi^-$ particles. The higher mass resonances, $\Lambda(1670)$ and $\Lambda(1690)$ are studied for the first time using photoproduction.

Thank you,
Utsav.

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