Observation Of The Decay B0bar Lambdac Antiproton Pi0

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Observation Of The Decay B0bar Lambdac Antiproton Pi0

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Author :
language : en
Publisher:
Release Date : 2010

Observation Of The Decay B0bar Lambdac Antiproton Pi0 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

In a sample of 467 million B{bar B} pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay {bar B}° →?{sub c}{bar p}?° and measured the branching fraction to be (1.94 ± 0.17 ± 0.14 ± 0.50) x 10−4, where the uncertainties are statistical, systematic, and the uncertainty on the?{sub c}+ → pK−?+ branching fraction, respectively. We determine an upper limit of 1.5 x 10−6 at 90% C.L. for the product branching fraction?({bar B}° →?{sub c}+(2455){bar p}) x?(?{sub c}+ → pK−?+). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair.

Observation Of The Baryonic B Decay B0bar Lambdac Antiproton K Pi

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Author :
language : en
Publisher:
Release Date : 2009

Observation Of The Baryonic B Decay B0bar Lambdac Antiproton K Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.

The authors report the observation of the baryonic B-decay {bar B}° → ?{sub c}+{bar p}K−?+, excluding contributions from the decay {bar B}° → ?{sub c}+{bar ?}K−. Using a data sample of 467 million B{bar B} pairs collected with the BABAR detector at the PEP-II storage ring at SLAC, the measured branching fraction is (4.33 ± 0.82){sub stat} ± 0.33{sub syst} ± 1.13{sub ?{sub c}+} x 10−5. In addition they find evidence for the resonant decay {bar B}° → ?{sub c}(2455){sup ++}{bar p}K− and determine its branching fraction to be (1.11 ± 0.30{sub stat} ± 0.09{sub syst} ± 0.29{sub ?{sub c}+}) x 10−5. The errors are statistical, systematic, and due to the uncertainty in the ?{sub c}+ branching fraction. For the resonant decay {bar B}° → ?{sub c}+{bar p}{bar K}*° we obtain an upper limit of 2.42 x 10−5 at 90% confidence level.

Observation Of The Baryonic B Decay B0bar To Lambda C Anti Lambda K

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Author :
language : en
Publisher:
Release Date : 2011

Observation Of The Baryonic B Decay B0bar To Lambda C Anti Lambda K written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

The authors report the observation of the baryonic B decay {bar B}° 2![Lambda]{sub c} {bar [Lambda]}K− with a significance larger than 7 standard deviations based on 471 x 106 B{bar B} pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. They measure the branching fraction for the decay {bar B}° 2![Lambda]{sub c}+ {bar [Lambda]}K− to be (3.8 ± 0.8{sub stat} ± 0.2{sub sys} ± 1.0 {sub {Lambda}{sub c}+}) x 10−5. The uncertainties are statistical, systematic, and due to the uncertainty in the {Lambda}{sub c}+ branching fraction. They find that the {Lambda}{sub c}+ K− invariant mass distribution shows an enhancement above 3.5 GeV/c2.

Dalitz Plot Analysis Of The Decay B0 B0bar To K Pi Pi0

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Author :
language : en
Publisher:
Release Date : 2008

Dalitz Plot Analysis Of The Decay B0 B0bar To K Pi Pi0 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

The authors report a Dalitz-plot analysis of the charmless hadronic decays of neutral B mesons to K{sup ±}?{sup {-+}}?°. With a sample of (231.8 ± 2.6) x 106?(4S) → B{bar B} decays collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, they measure the magnitudes and phases of the intermediate resonant and nonresonant amplitudes for B° and {bar B}° decays and determine the corresponding CP-averaged branching fractions and charge asymmetries. The inclusive branching fraction and CP-violating charge asymmetry are measured to be?(B° → K?−?°) = (35.7{sub -1.5}{sup +2.6} ± 2.2) x 10−6, and?{sub CP} = -0.030{sub -0.051}{sup +0.045} ± 0.055 where the first errors are statistical and the second systematic. They observe the decay B° → K*°(892)?° with the branching fraction?(B° → K*°(892)?°) = (3.6{sub -0.8}{sup +0.7} ± 0.4) x 10−6. This measurement differs from zero by 5.6 standard deviations (including the systematic uncertainties). The selected sample also contains B° → {bar D}°?° decays where {bar D}° → K+?−, and they measure?(B° → {bar D}°?°) = (2.93 ± 0.17 {+-} 0.18) x 10−4.

Observation And Study Of B Meson Decays With Lambda C Baryons With The Babar Detector

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Author :
language : en
Publisher:
Release Date : 2013

Observation And Study Of B Meson Decays With Lambda C Baryons With The Babar Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.