Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session G03: Panofsky Prize and Future of B Physics
8:30 AM–10:06 AM,
Sunday, April 14, 2019
Sheraton
Room: Plaza E
Sponsoring
Unit:
DPF
Chair: Priscilla Cushman, University of Minnesota
Abstract: G03.00002 : Dark Matter and Baryogenesis from B mesons.*
8:54 AM–9:18 AM
View Presentation Abstract
Presenter:
Ann Elizabeth Nelson
(University of Washington)
Author:
Ann Elizabeth Nelson
(University of Washington)
The pattern of CP violation in in the interference between B meson mixing and decay supports the CKM theory of CP violation in the Standard Model.
However the origin of the asymmetry between matter and anti-matter requires a source of CP or flavor-symmetry violation which is beyond the Standard Model, and is often used as a reason to study flavor physics and the physics of heavy quarks.
I will discuss some work on possible scenarios where b-quarks are produced out of equilibrium in the early universe and hadronize before they decay, and how CP violation in the oscillations of neutral B mesons and/or baryons, combined with a new source of violation of visible baryon number violation, could produce the matter-anti-matter asymmetry and possibly also the dark matter. This possibility is directly testable via exotic decays of b-quarks, and via the charge asymmetry in B-meson oscillations.
*This work was supported in part by the U.S. Department of Energy, under grant number DE-SC0011637, and by the Kenneth K. Young Memorial Endowed Chair.
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