BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:INPP Seminar | Constraining Nuclear Models from PREX and CREX D ata on Lead-208 and Calcium-48 Neutron Skin Thicknesses\, Oct. 25\n\nThe In stitute of Nuclear and Particle Physics Seminar series presents Tianqi Zhao discussing "Constraining Nuclear Models from PREX and CREX Data on Lead-20 8 and Calcium-48 Neutron Skin Thicknesses" on Oct. 25 at 4 p.m. in Lindley 321.\n\n \n\nZhao is a post-doctoral researcher at Ohio University.\n\n \n\ nIn-person seminars will be in Lindley 321. For remote seminars\, connectio n info for the video conference (TEAMS or ZOOM) and abstract of the talk wi ll be communicated by email before the seminar. The emails are sent to the inpp-seminar mailing list. To be added to this mailing list\, contact Praka sh.\n\n \n\nThe host is Prakash.\n\n \n\nAbstract: Parity-violating electro n scattering on Pb-208 and Ca-48 from JLab experiments (termed PREX and CRE X\, respectively) have reported neutron skin thicknesses of 0.121(+0.35) (- 0.35) fm and 0.283 (+0.071) (-0.071) fm\, respectively. This data can shed light on the isospin dependence of nuclear interactions in nuclei without t he uncertainties associated with strong interaction probes.\n\nTo account f or the reported data\, we have generated a few hundred thousand energy dens ity functionals and calculated properties of finite nuclei\, infinite nucle ar matter\, as well as of neutron stars. Our joint analyses of PREX and CRE X data favor energy density funtionals with a large bulk symmetry energy S_ v=33(+6)(-7) MeV and a small symmetry energy slope parameter L at the nucle ar equilibrium density\, which is in 2-sigma (95\%) tension with nuclear ma sses and charge radii. This tension leads to a strong constraint on the L=4 2(+15)(-17) MeV. The posterior distribution is dominated by CREX data since it rules out large L\, whereas the PREX likelihood function has a long tai l which is compatible with small L. Joint analyses with neutron star constr aints including the maximum mass\, tidal deformability\, and radius observa tions slightly tighten the lower bound L to be 43(+15)(-11) MeV. Furthermor e\, we find that our results agree nicely with previous neutron skin experi ments\, dipole probabilities as well as with recent ab-initio calculations. DTEND:20221025T210000Z DTSTAMP:20241005T043255Z DTSTART:20221025T200000Z GEO:39.326188;-82.101779 LOCATION:Lindley Hall\, 321 SEQUENCE:0 SUMMARY:INPP Seminar | Constraining Nuclear Models from PREX and CREX Data on Lead-208 and Calcium-48 Neutron Skin Thicknesses\, Oct. 25 UID:tag:localist.com\,2008:EventInstance_40926931251030 URL:https://calendar.ohio.edu/event/inpp_seminar_oct_25 END:VEVENT END:VCALENDAR