Stefan Meinel
@stefanmeinel.bsky.social
Associate Professor of Physics at University of Arizona, Tucson
Tucson Mountain Park in the Sonoran Desert this morning
October 12, 2025 at 3:30 PM
Tucson Mountain Park in the Sonoran Desert this morning
Good morning from Tucson, Arizona!
October 7, 2025 at 2:08 PM
Good morning from Tucson, Arizona!
The LHC Physics Center at Fermilab is hosting a workshop on "Violation of Fundamental Symmetries with B mesons" on December 15-19 (indico.fnal.gov/event/71119/). The workshop is dedicated to the memory of Professors Sheldon Stone and Ian Shipsey, who made significant contributions to B physics.
September 23, 2025 at 8:06 PM
The LHC Physics Center at Fermilab is hosting a workshop on "Violation of Fundamental Symmetries with B mesons" on December 15-19 (indico.fnal.gov/event/71119/). The workshop is dedicated to the memory of Professors Sheldon Stone and Ian Shipsey, who made significant contributions to B physics.
We had already pointed out in arxiv.org/abs/1912.05811 that the old estimate was incorrect, and had estimated B(Λb→J/ψΛ)=(3.7 ± 1.0) × 10−4, leading to the plot of the Λb→Λμ+μ− differential branching fraction shown below.
September 17, 2025 at 9:20 AM
We had already pointed out in arxiv.org/abs/1912.05811 that the old estimate was incorrect, and had estimated B(Λb→J/ψΛ)=(3.7 ± 1.0) × 10−4, leading to the plot of the Λb→Λμ+μ− differential branching fraction shown below.
A large discrepancy between theory and experiment for the decay rate of Xi_c^0 (down-strange-charm) baryons to Xi^- (down-strange-strange) baryons and leptons: arxiv.org/abs/2504.07302 . The problem may be with the measurement of the nonleptonic normalization decay mode.
April 11, 2025 at 1:45 PM
A large discrepancy between theory and experiment for the decay rate of Xi_c^0 (down-strange-charm) baryons to Xi^- (down-strange-strange) baryons and leptons: arxiv.org/abs/2504.07302 . The problem may be with the measurement of the nonleptonic normalization decay mode.