Observation and Properties of $L = 1 B_{1}$ and $B^*_2$ Mesons - INSPIRE

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Observation and Properties of $L = 1 B_{1}$ and $B^*_2$ Mesons

D0

Collaboration

May, 2007

8 pages

Published in:

Phys.Rev.Lett. 99 (2007) 172001

e-Print:

0705.3229 [hep-ex]

DOI:

10.1103/PhysRevLett.99.172001

PDG:

{{\mathit B}_{{{1}}}{(5721)}}

\rightarrow

{{\mathit B}^{*}}{{\mathit \pi}}

Report number:

FERMILAB-PUB-07-130-E

Experiments:

FNAL-E-0823

View in:

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Abstract: (arXiv)

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.

Note:

8 pages, 2 figures. Submitted to Phys. Rev. Lett

13.20.He
14.40.Nd
12.15.Ff
anti-p p: colliding beams
anti-p p: inclusive reaction
bottom meson: hadroproduction
B: excited state
angular momentum: 1
bottom meson: hadronic decay
bottom meson: branching ratio

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