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Sep 5 – 9, 2022
online
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Thank you to all the participants for a great QNP2022!

Latest Results on Lifetimes and Binding Energies of A=3,4 Hypernuclei from STAR

Sep 8, 2022, 12:55 PM
25m
online

online

FSU, Tallahassee, FL, USA

Speaker

Yue Hang Leung (University of Heidelberg)

Description

The hyperon-nucleon (Y-N) interaction is an important ingredient in the description of the equation-of-state of high-baryon-density matter. Light hypernuclei ($A=3, 4$), being simple Y-N bound states, are cornerstones of our understanding of the Y-N interaction. Precise measurements of the lifetimes and binding energies of light hypernuclei are of particular interest.

Light hypernuclei are expected to be abundantly produced in intermediate to low energy heavy-ion collisions due to the high baryon density. As a result, the STAR Beam Energy Scan Phase II program, spanning an energy range of $\sqrt{s_{\rm{NN}}}=3.0-27.0$ GeV, is particularly suited for hypernuclei studies. In this talk, recent results on the lifetimes of ${}^{3}_{\Lambda}$H, ${}^{4}_{\Lambda}$H, ${}^{4}_{\Lambda}$He measured in $\sqrt{s_{\rm{NN}}}=3.0$ and $7.2$ GeV Au+Au collisions will be presented. The binding energies of ${}^{4}_{\Lambda}$H, ${}^{4}_{\Lambda}$He measured in $\sqrt{s_{\rm{NN}}}=3.0$ GeV Au+Au collisions will also be presented. These results will be compared to previous measurements and theoretical calculations, and the physics implications will be discussed.

speaker affiliation University of Heidelberg

Primary author

Yue Hang Leung (University of Heidelberg)

Presentation materials