A Study Of Charm Baryons Containing A Lambda Baryon In The Final State PDF Download
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Author | : Joseph Alexander Swiatek |
Publisher | : |
Total Pages | : 248 |
Release | : 1995 |
Genre | : |
ISBN | : |
Download A Study of Charm Baryons Containing a Lambda Baryon in the Final State Book in PDF, ePub and Kindle
Author | : V. Ziegler |
Publisher | : |
Total Pages | : 6 |
Release | : 2006 |
Genre | : |
ISBN | : |
Download Charm Baryon Studies at BaBar Book in PDF, ePub and Kindle
The authors present a precision measurement of the mass of the {Lambda}{sub c}{sup +} and studies of the production and decay of the {Omega}{sub c}{sup 0} and {Xi}{sub c}{sup 0} charm baryons using data collected by the BABAR experiment. To keep the systematic uncertainty as low as possible, the {Lambda}{sub c}{sup +} mass measurement is performed using the low Q-value decays, {Lambda}{sub c}{sup +} {yields} {Lambda}{sup 0} K{sub S}{sup 0}K{sup +} and {Lambda}{sub c}{sup +} {yields} {Sigma}{sup 0} K{sub S}{sup 0}K{sup +}. Several hadronic final states involving an {Omega}{sup -} and a {Xi}{sup -} hyperon are analyzed to reconstruct the {Xi}{sub c}{sup 0} and the {Omega}{sub c}{sup 0}.
Author | : |
Publisher | : |
Total Pages | : 161 |
Release | : 2007 |
Genre | : |
ISBN | : |
Download A Study of Double-Charm and Charm-Strange Baryons InElectron-Positron Annihilations Book in PDF, ePub and Kindle
In 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 | : Brian Aa Petersen |
Publisher | : |
Total Pages | : 8 |
Release | : 2006 |
Genre | : |
ISBN | : |
Download Study of Charm Baryons with the BaBar Experiment Book in PDF, ePub and Kindle
The 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}.
Author | : |
Publisher | : |
Total Pages | : 800 |
Release | : 1994 |
Genre | : Dissertation abstracts |
ISBN | : |
Download American Doctoral Dissertations Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2007 |
Genre | : |
ISBN | : |
Download A Study of Excited Charm-Strange Baryons WithEvidence for New Baryons Xi_c(3055)+ and Xi_c(3123) Book in PDF, ePub and Kindle
We present a study of excited charm-strange baryon states produced in ee− annihilations at or near a center-of-mass energy of 10.58 GeV, in a data sample with an integrated luminosity of 384 fb−1 recorded with the BABAR detector at the PEP-II e+e storage rings at the Stanford Linear Accelerator Center. We study strong decays of charm-strange baryons to?{sub c}+K{sub S}°,?{sub c}+K−,?{sub c}+K−?+,?{sub c}+K{sub S}°?−,?{sub c}+K{sub S}°?−?+,?{sub c}+K−?−?+. This study confirms the existence of the states?{sub c}(2980)+,?{sub c}(3077)+, and?{sub c}(3077)−, with a more accurate determination of the?{sub c}(2980)+ mass and width. We also present evidence for two new states,?{sub c}(3055)+ and?{sub c}(3123)+, decaying through the intermediate resonant modes?{sub c}(2455){sup ++}K− and?{sub c}(2520){sup ++}K−, respectively. For each of these baryons, we measure the yield in each final state, determine the statistical significance, and calculate the product of the production cross-section and branching fractions. We also measure the masses and widths of these excited charm-strange baryons.
Author | : F. Iachello |
Publisher | : Cambridge University Press |
Total Pages | : 272 |
Release | : 2006-11-02 |
Genre | : Science |
ISBN | : 9780521028790 |
Download The Interacting Boson Model Book in PDF, ePub and Kindle
This book gives an account of the properties of the interacting boson model.
Author | : Paul G Langacker |
Publisher | : World Scientific |
Total Pages | : 1032 |
Release | : 1995-02-23 |
Genre | : Science |
ISBN | : 9814602817 |
Download Precision Tests Of The Standard Electroweak Model Book in PDF, ePub and Kindle
High precision measurements of weak neutral current and charged current processes and of the properties of the Z and W bosons have established the standard electroweak model as correct down to a distance scale of 10-16 cm, and are a sensitive probe of possible underlying physics. In this book, all aspects of the program are considered in detail, including the structure of the standard model, radiative corrections, high precision experiments, and their implications. The major classes of experiments are surveyed, covering the experiments themselves, the data analysis, results, and prospects.This volume is a detailed reference for theoretical and experimental researchers, as well as an introductory text for advanced students.
Author | : |
Publisher | : |
Total Pages | : 215 |
Release | : 1991 |
Genre | : |
ISBN | : |
Download Excited Charm Baryons in Semileptonic Lambda(sub)b Decay and Their Contribution to a Bjorken Sum Rule Book in PDF, ePub and Kindle
It has recently been shown that hadrons containing a single heavy quark exhibit a new flavor-spin symmetry of QCD. We exploit this symmetry to obtain model independent predictions for the form factors for the semileptonic decay of the Lambda(sub)b to the low-lying negative parity charm baryons. We discuss the connection between these results and the slope of the universal function Zeta that determines the Lambda(sub)b->Lambda(sub)c weak form factors.
Author | : Dillon Roach |
Publisher | : |
Total Pages | : 82 |
Release | : 2015 |
Genre | : Electronic dissertations |
ISBN | : |
Download Inclusive [lambda] Baryon Spectra in Au+Au Collisions at Sqrt(S_{NN}) Book in PDF, ePub and Kindle