A Study of the Production and Properties of Charmed Baryons
Author: Krishna Meher Podury
Publisher:
Published: 1994
Total Pages: 94
ISBN-13:
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Author: Krishna Meher Podury
Publisher:
Published: 1994
Total Pages: 94
ISBN-13:
DOWNLOAD EBOOKAuthor: Richard George Van de Water
Publisher:
Published: 1993
Total Pages: 286
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DOWNLOAD EBOOKAuthor: Shamona Ahmed
Publisher:
Published: 2006
Total Pages: 198
ISBN-13:
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Published: 2007
Total Pages: 9
ISBN-13:
DOWNLOAD EBOOKSELEX (Fermilab Experiment 781) [1] employs beams of?−,?−, and protons at around 600 GeV/c to study production and decay properties of charmed baryons. It took data in the 1996/7 fixed target run and is currently analyzing those data. Here they focus on recently obtained results concerning the?{sub c}° lifetime and the doubly-charmed baryons?{sub cc} and?{sub cc}{sup ++}.
Author:
Publisher:
Published: 1982
Total Pages: 868
ISBN-13:
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Publisher:
Published: 1994
Total Pages: 762
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Published: 2007
Total Pages: 161
ISBN-13:
DOWNLOAD EBOOKIn this dissertation I describe a study of double-charm and charm-strange baryons based on data collected with the BABAR Detector at the Stanford Linear Accelerator Center. In this study I search for new baryons and make precise measurements of their properties and decay modes. I seek to verify and expand upon double-charm and charm-strange baryon observations made by other experiments. The BABAR Detector is used to measure subatomic particles that are produced at the PEP-II storage rings. I analyze approximately 300 million e+e- → c{bar c} events in a search for the production of double-charm baryons. I search for the double-charm baryons?{sub cc} (containing the quarks ccd) and?{sup ++}{sub cc} (ccu) in decays to?+{sub c}K−?+ and?+{sub c}K−?+?+, respectively. No statistically significant signals for their production are found, and upper limits on their production are determined. Statistically significant signals for excited charm-strange baryons are observed with my analysis of approximately 500 million e+e- → c{bar c} events. The charged charm-strange baryons?{sub c}(2970)+,?{sub c}(3055)+,?{sub c}(3123)+ are found in decays to?+{sub c}K−?+, the same decay mode used in the?+{sub cc} search. The neutral charm-strange baryon?{sub c}(3077)° is observed in decays to?+{sub c}K?−. I also search for excited charm-strange baryon decays to?+{sub c}K8,?+{sub c}K−,?+{sub c}K8?−?+, and?+{sub c}K−?−?+. No significant charm-strange baryon signals a f h these decay modes. For each excited charm-strange baryon state that I observe, I measure its mass, natural width (lifetime), and production rate. The properties of these excited charm-strange baryons and their decay modes provide constraints for phenomenological models of quark interactions through quantum chromodynamics. My discovery of the two new charm-strange baryons?{sub c}(3055)+ and?{sub c}(3123)+ influences our theoretical understanding of charm-strange baryon states.
Author: Benjamin F Gibson
Publisher: World Scientific
Published: 1996-09-20
Total Pages: 614
ISBN-13: 9814547670
DOWNLOAD EBOOKThe conference focused on the current status of baryon spectroscopy, form factors and structure functions, electroweak interactions and symmetries, strange and exotic states, chiral perturbation theory, heavy quark physics, and medium modifications, through plenary session summaries and reviews and parallel session reports of recent experimental and theoretical advances. Plans for future facilities and upgrades were highlighted in special plenary sessions.
Author: Brian Aa Petersen
Publisher:
Published: 2006
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKThe authors report on several studies of charm baryon production and decays by the BABAR collaboration. They confirm previous observations of the {Xi}'{sub c}{sup 0/+}, {Xi}{sub c}(2980){sup +} and {Xi}{sub c}(3077){sup +} baryons, measure branching ratios for Cabibbo-suppressed {Lambda}{sub c}{sup +} decays and use baryon decays to study the properties of the light-quark baryons, {Omega}{sup -} and {Xi}(1690){sup 0}.
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Published: 2008
Total Pages: 198
ISBN-13:
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