A New Method for Selecting Exclusive Semileptonic Charmless B-Decays at $e^+ e^-$ Colliders at the $Υ(4S)$

Details A New Method for Selecting Exclusive Semileptonic Charmless B-Decays at $e^+ e^-$ Colliders at the $Υ(4S)$ A New Method for Selecting Exclusive Semileptonic Charmless B-Decays at $e^+ e^-$ Colliders at the $Υ(4S)$

1997-10-27

arxiv.org/abs/hep-ex/9710029v1

Nucl.Instrum.Meth. A421 (1999) 411-416

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages with 7 figures in subdirectory fig

Scientific paper

10.1016/S0168-9002(98)01141-3

We introduce a new method for selecting exclusive semileptonic charmless B-decays in the presence of a large background. The method can be applied to charged and neutral B-mesons decaying into any exclusive neutral or charged hadronic final state. The method is designed for high luminosity $\eplemi$ colliders operating at the $\Upsilon(4S)$. It employs an improved partial reconstruction technique for $\Dstar$-mesons and a novel 0-C event fit to both B-meson's decay products resulting in the kinematics of all particles (including neutrinos) in the event. The charged lepton energies are accessible from $1.0 \GeV$ to the kinematic limit.

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