Observation and Properties of L=1 B_1 and B_2* Mesons
D0 Collaboration, V. Abazov, et al
TL;DR
This paper reports the first direct observation and measurement of the masses and production rates of the excited B mesons B_1 and B_2*, providing new insights into heavy meson spectroscopy.
Contribution
It presents the first direct observation and precise measurements of the masses and production rates of B_1 and B_2* mesons, distinguishing them as separate states.
Findings
Mass of B_1 is 5720.6 MeV/c^2
Mass difference between B_2* and B_1 is 26.2 MeV/c^2
Production rate is about 13.9% of B+ mesons
Abstract
Excited B mesons B_1 and B_2* are observed directly for the first time as two separate states in fully reconstructed decays to B+(*) pi-. The mass of B_1 is measured to be (5720.6 +- 2.4 +- 1.4) MeV/c^2 and the mass difference DeltaM between B_2* and B_1 is (26.2 +- 3.1 +- 0.9) MeV/c^2, giving the mass of the B_2* as (5746.8 +- 2.4 +- 1.7) MeV/c^2. The production rate for B_1 and B_2* mesons is determined to be a fraction (13.9 +- 1.9 +- 3.2)% of the production rate of the B+ meson.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.