Wg12d BaBar Note References

(in reverse order, currently with a cutoff date around TDR, Spring 1995)
  1. ANGULAR CORRELATION IN D^*+D^*- FINAL STATES IN BABAR
    By Livio Lanceri , Gloria Vuagnin , Guido Michelon BABAR-Note-315, 08-AUG-96 [postscript]
    Maximum likelihood to transversity angle with consideration of detector resolution.
  2. VERTEXING TOOLS FOR BABAR
    By John LoSecco BABAR-Note-308, 24-JUL-96 [postscript]
    This document describes a number of vertexing software tools for the BaBar experiment at SLAC. One of the manifest goals of the experiment is to measure the time evolution of B mesons which require accurate vertexing.
  3. MEASURING CP VIOLATING ASYMMETRIES IN B DECAYS WITH THE BABAR AND BELLE DETECTORS
    By Guy Wormser BABAR-Note-280, 01-NOV-95 [postscript]
  4. STATISTICAL TOOLS FOR VERTEX RECONSTRUCTION. APPLICATION TO THE DETERMINATION OF THE TAGGING B VERTEX IN LEPTON TAGGED CP EVENTS.
    By Jacques Chauveau , Pascal David , Philippe Leruste BABAR-Note-279, 01-MAR-96 [postscript]
    Statistical tools leading to an optimal precision for constrained problems are explained in some generality.
  5. A STUDY OF THE VERTEX RESOLUTION OF THE BABAR DETECTOR IN THE CHANNEL B^) D^+ D^-
    By Massimo Carpinelli , Stefano Bettarini , Marcello Giorgi BABAR-Note-269, 08-DEC-95 [postscript]
    The result of a study based on Monte Carlo simulation of the vertex resolution in the plane perpendicular to the beam is reported, for the channel B^0 D^+D^-, followed by K(2pie). Using a "corrected" distance of closest approach to the z axis of the lepton tag, and association of the tracks to the two decay vertices is attempted. The D meson is inferred by exploiting the thrust in the x-y plane.
  6. AN UNBINED MAXIMUM LIKELIHOOD ANAYLSIS OF CP VIOLATION
    By Pier Marrocchesi BABAR-Note-257, 22-SEP-95 [postscript]
    Detetor resolution effects on the measured CP asymmetry are revisited. A simulation neous fit of the asymmetry parameter sin 2phi and the background fraction is performed on Monte Carlo data using an unbined maximum likelihood method. Results are discussed.
  7. RECONSTRUCTION OF PHOTONS AND NEUTRAL PIONS IN THE TDR GEOMETRY
    By Georges Vasseur BABAR-Note-232, 13-JUN-95 [postscript]
    This note is an addendum to BaBar Note #183, in which the channels B^o --> pi^o pi^o, B^o --> rho^o gamma were studied in an old geometry. Results in the TDR geometry are presented.
  8. TAG MODE VERTEX RESOLUTION STUDIES
    By Matthew Weaver BABAR-Note-227, 16-OCT-95 [postscript]
    In order to determine the precision with which CP measurements can be made in the BaBar detector, the vertex resolution of flavor-tagged B^0 and B^0 decays has been studied with the aid of the ASLUND Monte Carlo simulation. The precision with which the distance between a tagged B^0 (B^0) decay vertex and the CP final state B^0 decay vertex can be measured directly related to how precisely the CP asymmetry can be measured. This note describes the procedure and results of estimating the vertex resolution of the B flavor tag modes.
  9. Z-VERTEX RESOLUTIONS B --> CP MODES FOR TDR DETECTOR
    By William Lockman BABAR-Note-225, 13-JUN-95 [postscript]
    Using the parametric Monte Carlo ASLUND, the z-vertex resolutions in three B decay modes into CP eigenstates are estimated for different detector configurations.
  10. RECONSTRUCTION OF THE VERTEX OF THE TAGGING B IN LEPTON TAGGED CP EVENTS
    By Pascal David BABAR-Note-224, 10-MAR-95 [postscript]
    The tagging B vertex measurement dominates the uncertainly on time difference between the two B decays considered when measuring the CP asymmetry. Different reconstruction methods have been tried on events tagged by a fast lepton. The resolution on the longitudinal position of the vertex depends critically on the polar angle of the lepton. A possible useful parametrization of this dependance is here proposed.
  11. CP REACH ESTIMATES FOR THE TDR
    By Art Snyder BABAR-Note-219, 26-APR-95 [postscript]
  12. STUDY OF B^0 -> JUK^0S AND B^0 ->P^+_PIE^+_
    By Paul Harrison BABAR-Note-218, 18-JAN-96 [postscript]
  13. STUDY OF B^O-->D^+ D^- AND D^*+ D^*- IN BABAR
    By David Coupal BABAR-Note-211, 30-MAY-95 [postscript]
    This note presents the results of the study of B^o-->D^+ D^- and D^*+ D^*- in the BaBar detector as modes for measuring sin2beta. The detector simulation package ASLUND together with an event fitting package FITVER is used to measure vertex and mass resolutions, reconstruction efficiencies and backgrounds for a number of D^+/- and D^o decay modes. Results are extrapolated to the decay B^o-->D^+ D^-.
  14. AN IMPROVED TAGGING FOR THE BABAR EXPERIMENT
    By Stephane Plaszczynski , Marie-Helene Schune , Guy Wormser BABAR-Note-209, 15-FEB-95 [postscript]
    Using the formalism of discriminating variables for an optimal tagging using leptons, kaons, V^o's, the topology and the charge of the B decay, an overall quality factor of 33.2% is reached.
  15. FLAVOUR TAGGING STUDIES FOR THE BABAR TDR
    By Roland Waldi BABAR-Note-204, 26-APR-95 [postscript]
    Flavour tagging studies with ASLUND, and remarks on time difference measurement and CP asymmetry fits are presented.
  16. FLAVOUR TAGGING OF B SUB 0 DECAYS: USING ALL AVAILABLE INFORMATION
    By Roland Waldi BABAR-Note-190, 28-NOV-94 [postscript]
    A method to combine all b flavour tags in one flavour expectation value is proposed, and performance figures are given.
  17. CP EXTRACTION TOOL
    By Art Snyder BABAR-Note-188, 31-OCT-94 [postscript]
  18. RECONSTRUCTION OF PHOTONS AND NEUTRAL PIONS
    By Georges Vasseur BABAR-Note-183, 02-MAR-95 [postscript]
    The ability to reconstruct photons and neutral pions in the CsI electromagnetic calorimeter has been studied using a clustering algorithm in the BBSIM framework. Applications to some important channels for B physics are presented.
  19. CP PERFORMANCE STUDIES
    By Klaus Schubert , Rainer Schwierz , Bernhard Spaan , Roland Waldi BABAR-Note-173, 05-SEP-95 [postscript]
    Monte Carlo studies on CP violation measurements with the BaBar detector are presented , especially on tagging and on the influence of vertex resolutions on the dilution of CP asymmetries. The presently expected vertex resolutions lead to additional dilution factors of 0.95.
  20. PHYSICS AT AN ASYMMETRIC ENERGY B MESON FACTORY
    By Patricia Burchat BABAR-Note-68, 01-MAY-91 [postscript]
    This note contains a set of lectures given at the Lake Louise Winter Institute in Feb., 1991. A detailed, pedagogical description of the theoretical and experimental issues at an asymmetric B Factory is given.