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Title: Observation of b0 meson decay to a+-(1)(1260)pi-+

Authors:
; ;
Publication Date:
Research Org.:
COLLABORATION - SLAC
OSTI Identifier:
894714
Report Number(s):
LBNL-60573; SLAC-PUB-11769, BABAR-PUB-06-005
R&D Project: PBAOPS
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 97; Related Information: Journal Publication Date: 2006
Country of Publication:
United States
Language:
English
Subject:
72

Citation Formats

Aubert, B., et al., and BaBar Collaboration. Observation of b0 meson decay to a+-(1)(1260)pi-+. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.97.051802.
Aubert, B., et al., & BaBar Collaboration. Observation of b0 meson decay to a+-(1)(1260)pi-+. United States. doi:10.1103/PhysRevLett.97.051802.
Aubert, B., et al., and BaBar Collaboration. Wed . "Observation of b0 meson decay to a+-(1)(1260)pi-+". United States. doi:10.1103/PhysRevLett.97.051802.
@article{osti_894714,
title = {Observation of b0 meson decay to a+-(1)(1260)pi-+},
author = {Aubert, B. and et al. and BaBar Collaboration},
abstractNote = {},
doi = {10.1103/PhysRevLett.97.051802},
journal = {Physical Review Letters},
number = ,
volume = 97,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}
  • The authors present measurements of the branching fraction {Beta} and longitudinal polarization fraction f{sub L} for B{sup 0} {yields} a{sub 1}(1260){sup +} a{sub 1}(1260){sup -} decays, with a{sub 1}(1260){sup {+-}} {yields} {pi}{sup -}{pi}{sup +}{pi}{sup {+-}}. The data sample, collected with the BABAR detector at the SLAC National Accelerator Laboratory, represents 465 x 10{sup 6} produced B{bar B} pairs. They measure {Beta}(B{sup 0} {yields} a{sub 1}(1260){sup +} a{sub 1}(1260){sup -}) x [{Beta}(a{sub 1}(1260){sup +} {yields} {pi}{sup -}{pi}{sup +}{pi}{sup +})]{sup 2} = (11.8 {+-} 2.6 {+-} 1.6) x 10{sup -6} and f{sub L} = 0.31 {+-} 0.22 {+-} 0.10, where the firstmore » uncertainty is statistical and the second systematic. The decay mode is measured with a significance of 5.0 standard deviations including systematic uncertainties.« less
  • We present measurements of the branching fractions for the decays B{sup {+-}}{yields}a{sub 1}{sup {+-}}(1260){pi}{sup 0} and B{sup {+-}}{yields}a{sub 1}{sup 0}(1260){pi}{sup {+-}} from a data sample of 232x10{sup 6} BB pairs produced in e{sup +}e{sup -} annihilation through the {upsilon}(4S) resonance. We measure the branching fraction B(B{sup {+-}}{yields}a{sub 1}{sup {+-}}(1260){pi}{sup 0})xB(a{sub 1}{sup {+-}}(1260){yields}{pi}{sup -}{pi}{sup +}{pi}{sup {+-}})=( = 13.2{+-}2.7{+-}2.1)x10{sup -6} with a significance of 4.2{sigma}, and the branching fraction B(B{sup {+-}}{yields}a{sub 1}{sup 0}(1260){pi}{sup {+-}})xB(a{sub 1}{sup 0}(1260){yields}{pi}{sup -}{pi}{sup +}{pi}{sup 0})=(20.4{+-}4.7{+-}3.4)x10{sup -6} with a significance of 3.8{sigma}, where the first error quoted is statistical and the second is systematic.
  • We present measurements of the branching fraction B and longitudinal polarization fraction f{sub L} for B{sup 0}{yields}a{sub 1}(1260){sup +}a{sub 1}(1260){sup -} decays, with a{sub 1}(1260){sup {+-}}{yields}{pi}{sup -}{pi}{sup +}{pi}{sup {+-}}. The data sample, collected with the BABAR detector at the SLAC National Accelerator Laboratory, represents 465x10{sup 6} produced BB pairs. We measure B(B{sup 0}{yields}a{sub 1}(1260){sup +}a{sub 1}(1260){sup -})x[B(a{sub 1}(1260){sup +}{yields}{pi}{sup -}{pi}{sup +}{pi}{sup +})]{sup 2}(11.8{+-}2.6{+-}1.6)x10{sup -6} and f{sub L}=0.31{+-}0.22{+-}0.10, where the first uncertainty is statistical and the second systematic. The decay mode is measured with a significance of 5.0 standard deviations including systematic uncertainties.
  • The authors present a preliminary measurement of the branching fraction of the B meson decay B{sup 0} --> {alpha}{sup 1}{sup +}(1260) --> {pi}{sup +}{pi}{sup +}{pi}{sup -}. The data were recorded with the BABAR detector at the SLAC B factory PEP-II and correspond to 124 x 10{sup 6} B{bar B} pairs produced in e{sup +}e{sup -} annihilation through the {Upsilon}(4S) resonance. They find the branching fraction B(B{sup 0} --> {alpha}{sub 1}{sup +}(1260){pi}{sup -}) = (42.6 {+-} 4.2 {+-} 4.1) x 10{sup -6}. The fitted values of the {alpha}{sub 1}(1260) parameters are m{sub {alpha}{sub 1}} = 1.19 {+-} 0.02 GeV/c{sup 2} andmore » {Gamma}{sub {alpha}{sub 1}} = 312 {+-} 55 MeV/c{sup 2}.« less