Constraining nucleon effective masses with flow and stopping observables from the SπRIT experiment

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Tsang C.Y., Kurata-Nishimura M., Tsang M.B., Lynch W.G., Zhang Y.X., Barney J., Estee J., Jhang G., Wang R., Kaneko M., Lee J.W., Isobe T., Murakami T., Ahn D.S., Atar L., Aumann T., Baba H., Boretzky K., Brzychczyk J., Cerizza G., Chiga N., Fukuda N., Gasparic I., Hong B., Horvat A., Ieki K., Inabe N., Kim Y.J., Kobayashi T., Kondo Y., Lasko P., Lee H.S., Leifels Y., Łukasik J., Manfredi J., McIntosh A.B., Morfouace P., Nakamura T., Nakatsuka N., Nishimura S., Otsu H., Pawłowski P., Pelczar K., Rossi D., Sakurai H., Santamaria C., Sato H., Scheit H., Shane R., Shimizu Y., Simon H., Snoch A., Sochocka A., Sumikama T., Suzuki H., Suzuki D., Takeda H., Tangwancharoen S., Törnqvist H., Togano Y., Xiao Z.G., Yennello S.J., Zhang Y., SpiRIT collaboration

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2024

วารสาร: Physics Letters B (0370-2693)

Volume number: 853

นอก: 0370-2693

eISSN: 1873-2445

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85191296621&doi=10.1016%2fj.physletb.2024.138661&partnerID=40&md5=98994488c7e101b27e5621cf635c621f

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Properties of the nuclear equation of state (EoS) can be probed by measuring the dynamical properties of nucleus-nucleus collisions. In this study, we present the directed flow (v1), elliptic flow (v2) and stopping (VarXZ) measured in fixed target Sn + Sn collisions at [Formula presented] with the SπRIT Time Projection Chamber. We perform Bayesian analyses in which EoS parameters are varied simultaneously within the Improved Quantum Molecular Dynamics-Skyrme (ImQMD-Sky) transport code to obtain a multivariate correlated constraint. The varied parameters include symmetry energy, S0, and slope of the symmetry energy, L, at saturation density, isoscalar effective mass, ms⁎/mN, isovector effective mass, mv⁎/mN and the in-medium cross-section enhancement factor η. We find that the flow and VarXZ observables are sensitive to the splitting of proton and neutron effective masses and the in-medium cross-section. Comparisons of ImQMD-Sky predictions to the SπRIT data suggest a narrow range of preferred values for ms⁎/mN, mv⁎/mN and η. © 2024 The Author(s)

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