TY - JOUR
T1 - Investigation of the decay of orbitally-excited B mesons and first measurement of the branching ratio BR(BJ* → B*π(X))
AU - Abbiendi, G
AU - Ashby, Shaun
AU - Bloodworth, Ian
AU - Bright-Thomas, Paul
AU - Charlton, David
AU - Hawkes, Christopher
AU - Homer, Roger
AU - Jovanovic, Predrag
AU - Lloyd, Alun
AU - McMahon, Thomas
AU - O'Neale, Stephen
AU - Talbot, Scott
AU - Watson, Miriam
AU - Watkins, Peter
AU - Watson, Alan
AU - Watson, Nigel
AU - Wilson, John
PY - 2002/4/1
Y1 - 2002/4/1
N2 - From about 4 million hadronic Z(0) decays recorded by the OPAL detector on and near to the Z(0) resonance, we select a sample of more than 570 000 inclusively reconstructed B mesons. Orbitally-excited mesons B are reconstructed using Bpi(+/-) combinations. Independently, B-* mesons are reconstructed using the decay B-* --> Bgamma. The selected B-* candidates are used to obtain samples enriched or depleted in the decay B-J(*) --> B(*)pi(+/-)(X), where (X) refers to decay modes with or without additional accompanying decay particles. From the number of signal candidates in the Bpi(+/-) mass spectra of these two samples, we perform the first measurement of the branching ratio of orbitally-excited B mesons decaying into B* T(X): BR(B-J(*) --> B(*)pi(X)) = 0.85(-0.27)(+0.26)+/-0.12, where the first error is statistical and the second systematic.
AB - From about 4 million hadronic Z(0) decays recorded by the OPAL detector on and near to the Z(0) resonance, we select a sample of more than 570 000 inclusively reconstructed B mesons. Orbitally-excited mesons B are reconstructed using Bpi(+/-) combinations. Independently, B-* mesons are reconstructed using the decay B-* --> Bgamma. The selected B-* candidates are used to obtain samples enriched or depleted in the decay B-J(*) --> B(*)pi(+/-)(X), where (X) refers to decay modes with or without additional accompanying decay particles. From the number of signal candidates in the Bpi(+/-) mass spectra of these two samples, we perform the first measurement of the branching ratio of orbitally-excited B mesons decaying into B* T(X): BR(B-J(*) --> B(*)pi(X)) = 0.85(-0.27)(+0.26)+/-0.12, where the first error is statistical and the second systematic.
U2 - 10.1007/s100520200892
DO - 10.1007/s100520200892
M3 - Article
VL - 23
SP - 437
EP - 454
JO - European Physical Journal C
JF - European Physical Journal C
IS - 3
ER -