Measurement Of The Production Fraction Times Branching Fraction Boldsymbol F B To Lambda B Cdot Mathcal B Lambda B To J Psi Lambda

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Measurement Of The Production Fraction Times Branching Fraction Boldsymbol F B To Lambda B Cdot Mathcal B Lambda B To J Psi Lambda

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Author :
language : en
Publisher:
Release Date : 2011

Measurement Of The Production Fraction Times Branching Fraction Boldsymbol F B To Lambda B Cdot Mathcal B Lambda B To J Psi Lambda 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 [Lambda]{sub b}(udb) baryon is observed in the decay [Lambda]{sub b} → J/[psi][Lambda] using 6.1 fb−1 of p{bar p} collisions collected with the D0 detector at √s = 1.96 TeV. The production fraction multiplied by the branching fraction for this decay relative to that for the decay B° → J/[psi]K{sub s}° is measured to be 0.345 ± 0.034 (stat.) ± 0.033 (syst.) ± 0.003 (PDG). Using the world average value of f(b → B°) · [Beta](B° → J/[psi]K{sub s}°) = (1.74 ± 0.08) x 10−5, they obtain f(b → [Lambda]{sub b}) · [Beta]([Lambda]{sub b} → J/[psi][Lambda]) = (6.01 ± 0.60 (stat.) ± 0.58 (syst.) ± 0.28 (PDG)) x 10−5. This measurement represents an improvement in precision by about a factor of three with respect to the current world average.

Measurement Of The Ratios Of Branching Fractions B B S 0 D S Pi

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Author :
language : en
Publisher:
Release Date : 2005

Measurement Of The Ratios Of Branching Fractions B B S 0 D S 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 2005 with categories.