Download or read book Search for Baryon number and Lepton number Violating Decays of Lambda Hyperons Using the CLAS Detector at Jefferson Laboratory written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for ten baryon-number violating decay modes of $\Lambda$ hyperons using the CLAS detector at Jefferson Laboratory. Nine of these decay modes result in a single meson and single lepton in the final state ($\Lambda \rightarrow m \ell$) and conserve either the sum or the difference of baryon and lepton number ($B \pm L$). The tenth decay mode ($\Lambda \rightarrow \bar{p}\pi^+$) represents a difference in baryon number of two units and no difference in lepton number. We observe no significant signal and set upper limits on the branching fractions of these reactions in the range $(4-200)\times 10^{-7}$ at the $90\%$ confidence level.

Download or read book Search for Baryon number and Lepton number Violating Decays of Hyperons Using the CLAS Detector at Jefferson Laboratory written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for ten baryon-number violating decay modes of ? hyperons using the CLAS detector at Jefferson Laboratory. Nine of these decay modes result in a single meson and single lepton in the final state (? → m?) and conserve either the sum or the difference of baryon and lepton number (? ± L). The tenth decay mode (? → p¯?+) represents a difference in baryon number of two units and no difference in lepton number. Furthermore, we observe no significant signal and set upper limits on the branching fractions of these reactions in the range (4 – 200) x 107 at the 90% confidence level.

Download or read book Search for the Baryon and Lepton Number Violating Decays Tau to Lambda H written by B. Aubert and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have searched for the violation of baryon number B and lepton number L in the (B-L)-conserving modes {tau}{sup -} {yields} {bar {Lambda}}{sup 0}{pi}{sup -} and {tau}{sup -} {yields} {bar {Lambda}}{sup 0}K{sup -} as well as the (B-L)-violating modes {tau}{sup -} {yields} {Lambda}{sup 0}{pi}{sup -} and {tau}{sup -} {yields} {Lambda}{sup 0}K{sup -} using 237 fb{sup -1} of data collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. They do not observe any signal and determine preliminary upper limits on the branching fractions {Beta}({tau}{sup -} {yields} {bar {Lambda}}{sup 0}{pi}{sup -})

Download or read book Searches for the Baryon and Lepton number Violating Decays B 0 rightarrow Lambda c ell B rightarrow Lambda ell and B rightarrow bar Lambda ell written by and published by . This book was released on 2011 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Searches for B mesons decaying to final states containing a baryon and a lepton are performed, where the baryon is either [Lambda]{sub c} or [Lambda] and the lepton is a muon or an electron. These decays violate both baryon and lepton number and would be a signature of physics beyond the standard model. No significant signal is observed in any of the decay modes, and upper limits in the range (3.2 - 520) x 10−8 are set on the branching fractions at the 90% confidence level.

Download or read book Lepton and Baryon Number Violation in Particle Physics Astrophysics and Cosmology written by H. V. Klapdor-Kleingrothaus and published by CRC Press. This book was released on 1999-01-01 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together leading researchers from particle physics, astrophysics, and cosmology, Lepton and Baryon Number Violation in Particle Physics, Astrophysics and Cosmology presents reviews of current theoretical ideas, experimental results, and future perspectives in this topical field. The book covers areas related to baryon number (B) and lepton number (L) violation in particle physics, nuclear physics, rare decays, and cosmology. The main topics include B and L violation and grand unified theories; B and L violation in the early universe, cosmology, and astrophysics; Lepton family number violation; and B and L violation and collider physics.

Download or read book SEARCH for Baryon and Lepton Number Violating Z0 Decays Extras written by G. ABBIENDI and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Search for Lepton and Baryon Number Violating Decays of the tau lepton written by Mark Charles Peterman and published by . This book was released on 1998 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Search for a Lepton number violating Decay of the Cascade minus Hyperon written by Durgaprasad Rajaram and published by . This book was released on 2002 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Baryon and Lepton Number Violation in the Standard Model at High Energy written by Los Alamos National Laboratory and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin and Parity Measurement of the Lambda 1405 Baryon written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A determination of the spin and parity of the [Lambda](1405) is presented using photoproduction data from the CLAS detector at Jefferson Lab. The reaction [gamma]+p2!++[Lambda](1405) is analyzed in the decay channel Lambda(1405)2!Sigma]++[pi], where the decay distribution to [Sigma]+pi- and the variation of the [Sigma]+ polarization with respect to the [Lambda](1405) polarization direction determines the parity. The [Lambda](1405) is produced, in the energy range 2.55

Download or read book Paroisse Saint Th odore de Dompsure Ses Confr ries written by and published by . This book was released on 1877 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Search for Lepton Number Violating Processes in B to H L L Decays written by and published by . This book was released on 2012 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have searched for the lepton-number violating processes B → h−l+l+ with h− = K−/?− and l+ = e+/?+, using a sample of 471 ± 3 million B{bar B} events collected with the BABAR detector at the PEP-II e+e− collider at the SLAC National Accelerator Laboratory. We find no evidence for these decays and place 90% confidence level upper limits on their branching fractions B (B+ →?−e+e+)

Download or read book Baryon Number Violation at the SSC written by Michael P. Mattis and published by . This book was released on 1990 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Properties of the Lambda 1405 Measured at CLAS written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The nature of the?(1405), and its place in the baryon spectrum has remained uncertain for decades. Theoretical studies have shown that it may possess strong dynamical components which are not seen in other well-known baryons. Using the CLAS detector system in Hall B at Jefferson Lab, we have measured the photoproduction reaction? + p 2!K?(1405) with high statistics and over different?? decay channels. The reconstructed invariant mass distribution (lineshape) has been measured, as well as the differential cross sections for the?(1405),?(1385), and?(1520). Our analysis method is discussed and our near-final results for the?(1405) lineshape and differential cross section are presented.

Download or read book Baryon and Lepton Number Violation in the Weinberg Salam Theory written by Los Alamos National Laboratory and published by . This book was released on 1989 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoproduction of Lambda and Sigma0 Hyperons Off Protons in the Nucleon Resonance Region Using CLAS at Jefferson Lab written by John W. C. McNabb and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Search for the Lepton Number Violating Decay 2 written by and published by . This book was released on 2003 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected with the BABAR detector between 1999 and 2001, we describe a preliminary search for the neutrinoless decay? 2!??. This data sample includes data collected both on and off the?(4S) resonance and corresponds to 56 x 106 produced tau pair events. The search has an efficiency of 5.2 ± 0.1(MCstat) ± 0.5(sys)% and an expected background rate of 7.8 ± 1.4 events. We select 13 events in the final sample. As there is no evidence for a signal in this data, we set a preliminary upper limit of B(? 2!??)