Charm Spectroscopy, Charm Decays And New States at BaBar PDF Download

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Languages : en
Pages : 4

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This document presents the recent studies of Charmed hadrons at BABAR BELLE and CLEO. Here the author focuses on the recent developments on the study of D*{sub sJ}, observation of D → K+?°, D° - {bar D}° mixing in the doubly cabibbo-suppressed decays using D° → K+?+?° and the measurement of the decay constants using the leptonic D decays.

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Category :
Languages : en
Pages : 6

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Author: Masahiro Kuze
Publisher: World Scientific
ISBN: 9812568719
Category : Science
Languages : en
Pages : 996

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These proceedings present the most up-to-date status of deep inelastic scattering (DIS) physics. Topics such as structure function measurements and phenomenology, quantum chromodynamics (QCD) studies in DIS and photoproduction, spin physics and diffractive interactions are reviewed in detail, with emphasis on those studies that push the test of QCD and the Standard Model to the limits of their present range of validity, towards both the very high and the very low four-momentum transfers in lepton-proton scattering.

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Languages : en
Pages : 7

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In this paper recent results in the field of B meson decays to states containing charm are presented. These analyses are based on the 1999-2003 dataset collected by the BABAR experiment at the PEP-II ee− storage ring at the Stanford Linear Accelerator Center. Special attention is devoted to B decays to final states containing D mesons. In addition a few new results from B decays to charmonium states are reported.

Author: D. Altenburg
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

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In this note we present results on charmed hadron decays recently obtained from data recorded with the BABAR detector at the Stanford Linear Accelerator Center (SLAC) PEP-II B-Factory.

Author: Charles (M.)
Publisher:
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Category :
Languages : en
Pages :

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The results of several studies of charmed mesons and baryons at BABAR are presented. First, searches for the rare decays D{sup 0} {yields} l{sup +}l{sup -} are presented and new upper limits on these processes are established. Second, a measurement of the branching fraction of the isospin-violating hadronic decay D*{sub s}(2112){sup +} {yields} D{sub s}{sup +}{pi}{sup 0} relative to the radiative decay D*{sub s}(2112){sup +} {yields} D{sub s}{sup +}{gamma} is made. Third, the decays of D*{sub sJ}(2317){sup +} and D{sub sJ}(2460){sup +} mesons are studied and ratios of branching fractions are measured. Fourth, Cabibbo-suppressed decays of the {Lambda}{sub c}{sup +} are examined and their branching fractions measured relative to Cabibbo-allowed modes. Fifth, the {Chi}{sub c}{sup 0} is studied through its decays to {Chi}{sup -}{pi}{sup +} and {Omega}{sup -}K{sup +}; in addition to measuring the ratio of branching fractions for {Chi}{sub c}{sup 0} produced from the c{bar c} continuum, the uncorrected momentum spectrum is measured, providing clear confirmation of {Chi}{sub c}{sup 0} production in B decays.

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Languages : en
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Recent results are presented on the study of the [eta]{sub c} and [eta]{sub c}(2S) resonance parameters and on the observation of two narrow states in the D{sub s} spectrum, using the BABAR data set. The [eta]{sub c} and [eta]{sub c}(2S) are produced in [gamma][gamma] interactions: a precision measurement of their mass and total width is reported, together with a study supporting the correct assignment of the [eta]{sub c}(2S) quantum numbers. Two states D*{sub sJ 2317}, D{sub sJ 2457} are observed in continuum e+e− production, decaying to D{sub s}+ [pi]°[gamma] respectively: their masses are measured and a study on the resonant structure of the D{sub sJ}+(2457) decay is reported. All results are preliminary.

Author: S. Grancagnolo
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Recent measurements in exclusive hadronic B decays to states with charm are presented, including a review of the B {yields} D{sub sJ}D{sup (*)} decays, and a study of the B{sup -} {yields} J/{psi} K{sup -} {pi}{sup +}{pi}{sup -} decay looking for charmonium resonances. New results are shown on the search of the B{sup 0} {yields} D{sub s}{sup +} {rho}{sup -} and B{sup 0} {yields} J/{psi}{gamma} decays. These analysis are based on the 1999-2003 dataset collected by the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring at the Stanford Linear Accelerator Center.

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Category :
Languages : en
Pages : 4

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Recent results from the BaBar Collaboration in the sector of B decays to open Charm are presented. Some of the results represent new precision measurements and QCD tests, some other analysis is aimed to the study of rare decays and search for new physics. Branching fractions for the modes observed for the first time are highlighted. A few results are presented also in the baryon sector.

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Category :
Languages : en
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New and recent results are presented on charm and charmonium spectroscopy from BABAR experiment at SLAC. In particular, measurements on D{sub sJ} states branching fractions have been performed both in B-decays and inclusive ee− --> c{bar c} interactions. Here a search for D{sub sj}(2632) has been performed and a new D{sub sJ} state at a mass of 2.856 GeV/c2 has been observed. A search for Y(4260) has been performed in exclusive D{sub D} production from initial-state radiation.