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Download or read book Limits on Rare D-meson Decays written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest results from a number of experiments on searches for rare decays of the charmed D-mesons are summarized. This talk reports on upper limits on flavor changing weak neutral current reactions and on processes that do not conserve the lepton family number.
Download or read book Rare and Forbidden Decays of D Mesons written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors summarize the results of two recent searches for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D[sup+], D[sub s][sup+], and D[sup 0] mesons (and their antiparticles) into modes containing muons and electrons. using data from Fermilab charm hadroproduction experiment E791, they examined D[sup+] and D[sub s][sup+][pi][ell][ell] and[Kappa][ell][ell] decay modes and the D[sup 0] dilepton decay modes containing either[ell][sup+][ell][sup[minus]], a[rho][sup 0], [bar[Kappa]]*[sup 0], or[phi] vector meson, or a non-resonant[pi][pi], [Kappa][pi], or[Kappa][Kappa] pair of pseudoscalar mesons. No evidence for any of these decays was found. Therefore, the authors presented branching-fraction upper limits at 90% confidence level for the 51 decay modes examined. Twenty-six of these modes had no previously reported limits, and eighteen of the remainder were reported with significant improvements over previously published results.
Author : K Huitu
Publisher : CRC Press
ISBN 13 : 9780750306614
Total Pages : 1112 pages
Book Rating : 4.3/5 (66 download)
Download or read book High Energy Physics 99 Proceedings of the International Europhysics Conference on High Energy Physics, Tampere, Finland, 15-21 July 1999 written by K Huitu and published by CRC Press. This book was released on 2000-01-01 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Physics 99 contains the 18 invited plenary presentations and 250 contributions to parallel sessions presented at the International Europhysics Conference on High Energy Physics. The book provides a comprehensive survey of the latest developments in high energy physics. Topics discussed include hard high energy, structure functions, soft interactions, heavy flavor, the standard model, hadron spectroscopy, neutrino masses, particle astrophysics, field theory, and detector development.
Download or read book Search for Rare 3 and 4-body D0 Decays at FNAL E791 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Limits at the 10−4 level are reported for rare and forbidden decays of the D° charm meson to a pair of leptons and either a vector meson or two pseudoscalar mesons. Of these searches, 18 are investigations of decays without previous published results; several others have significantly improved sensitivity over previous results.
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Author : Deutsches Elektronen-Synchrotron (Hamburg).
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (753 download)
Download or read book Search for rare B-meson decays into D+s [D s] mesons written by Deutsches Elektronen-Synchrotron (Hamburg). and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 690 pages
Book Rating : 4.3/5 (91 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Jaros
Publisher : World Scientific
ISBN 13 : 9814493775
Total Pages : 941 pages
Book Rating : 4.8/5 (144 download)
Download or read book Lepton And Photon Interactions At High Energies - Proceedings Of The Xix International Symposium written by John Jaros and published by World Scientific. This book was released on 2000-07-21 with total page 941 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stanford University hosted the XIX International Symposium on Lepton and Photon Interactions at High Energies on August 9 - 14, 1999, at the Law School on the Stanford University Campus, the site of the previous Symposia. This volume constitutes the proceedings of the Symposium.
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (16 download)
Download or read book Limit on the Rare Decay B →??− K{sup {plus_minus}} written by and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for flavor-changing neutral current decays of B mesons into??K{sup {plus_minus}} using data obtained in the Collider Detector at Fermilab (CDF) 1992--1993 data taking run. To reduce the amount of background in our data we use precise tracking information from the CDF silicon vertex detector to pinpoint the location of the decay vertex of the B candidate, and accept only events which have a large decay time. We compare this data to a B meson signal obtained in a similar fashion, but where the muon pears originate from? decays, and calculate the relative branching ratios. In absence of any indication of flavor-changing neutral current decay we set an upper limit on the branching ratio of 3.2 × 10−1, which is consistent with Standard Model expectations but leaves little room for non-standard physics.
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (684 download)
Download or read book Search for Rare Charm Meson Decays at FNAL E791 written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the results of a blind search for flavor-changing neutral current (FCNC), lepton-flavor violating, and lepton-number violating decays of D, D{sub s}, and D° mesons (and their antiparticles) into 2-, 3-, and 4-body states including a lepton pair. Such decays may involve Flavor-Changing Neutral Currents, Leptoquarks, Horizontal Gauge Bosons, or Majorana Neutrinos. No evidence for any of these decays is found. Therefore, we present 90% confidence level branching-fraction upper limits, typically at the 10−4 level. A total of 51 decay channels have been examined; 26 have not been previously reported and 18 are significant improvements over previous results.
Author : Michael C. Kirk
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (528 download)
Download or read book An Upper Limit on the Neutral B(S) Meson Decays to Charged D(S) Meson Pion Branching Ratio written by Michael C. Kirk and published by . This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Search for Rare and Forbidden Charm Meson Decays at Fermilab E791 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the results of a blind search for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D[sup+], D[sub s][sup+], and D[sup 0] mesons (and their antiparticles) into modes containing muons and electrons. Using data from Fermilab charm hadroproduction experiment E791, they examine the[pi][ell][ell] and K[ell][ell] decay modes of D[sup+] and D[sub s][sup+] and the[ell][sup+][ell][sup[minus]] decay modes of D[sup 0]. No evidence for any of these decays is found. Therefore, they present branching-fraction upper limits at 90% confidence level for the 24 decay modes examined. Eight of these modes have no previously reported limits, and fourteen are reported with significant improvements over previously published results.
Author : John Jaros
Publisher : World Scientific
ISBN 13 : 9789810241896
Total Pages : 952 pages
Book Rating : 4.2/5 (418 download)
Download or read book XIX International Symposium on Lepton and Photon Interactions at High Energies written by John Jaros and published by World Scientific. This book was released on 2000 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stanford University hosted the XIX International Symposium on Lepton and Photon Interactions at High Energies on August 9 - 14, 1999, at the Law School on the Stanford University Campus, the site of the previous Symposia. This volume constitutes the proceedings of the Symposium.
Author : E Gava
Publisher : World Scientific
ISBN 13 : 9814554723
Total Pages : 1076 pages
Book Rating : 4.8/5 (145 download)
Download or read book High Energy Physics And Cosmology - Proceedings Of The 1991 Summer School (In 2 Volumes) written by E Gava and published by World Scientific. This book was released on 1992-07-20 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : ARGUS Collaboration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (831 download)
Download or read book Search for Rare B-meson Decays Into D + S Mesons written by ARGUS Collaboration and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Timothy L Barklow
Publisher : World Scientific
ISBN 13 : 9814499072
Total Pages : 749 pages
Book Rating : 4.8/5 (144 download)
Download or read book Electroweak Symmetry Breaking And New Physics At The Tev Scale written by Timothy L Barklow and published by World Scientific. This book was released on 1997-05-05 with total page 749 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an expanded version of the report by the Electroweak Symmetry Breaking and Beyond the Standard Model Working Group which was contributed to Particle Physics — Perspectives and Opportunities, a report of the Division of Particles and Fields Committee for Long Term Planning. One of the Working Group's primary goals was to study the phenomenology of electroweak symmetry breaking and attempt to quantify the “physics reach” of present and future colliders. Their investigations encompassed the Standard Model — with one doublet of Higgs scalars — and approaches to physics beyond the Standard Model. These include models of low-energy supersymmetry, dynamical electroweak symmetry breaking, and a variety of extensions of the Standard Model with new particles and interactions. The Working Group also considered signals of new physics in precision measurements arising from virtual processes and examined experimental issues associated with the study of electroweak symmetry breaking and the search for new physics at present and future hadron and lepton colliders.This volume represents an important contribution to the efforts being made to advance the frontiers of particle physics.
Author : Hesheng Chen
Publisher : World Scientific
ISBN 13 : 9814481270
Total Pages : 1424 pages
Book Rating : 4.8/5 (144 download)
Download or read book High Energy Physics written by Hesheng Chen and published by World Scientific. This book was released on 2005-05-03 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 32nd International Conference on High Energy Physics belongs to the Rochester Conference Series, and is the most important international conference in 2004 on high energy physics. The proceedings provide a comprehensive review on the recent developments in experimental and theoretical particle physics. The latest results on Top, Higgs search, CP violation, neutrino mixing, pentaquarks, heavy quark mesons and baryons, search for new particles and new phenomena, String theory, Extra dimension, Black hole and Lattice calculation are discussed extensively. The topics covered include not only those of main interest to the high energy physics community, but also recent research and future plans. Contents: Neutrino Masses and MixingsQuark Matter and Heavy Ion CollisionsParticle Astrophysics and CosmologyElectroweak PhysicsQCD Hard InteractionsQCD Soft InteractionsComputational Quantum Field TheoryCP Violation, Rare Kaon Decay and CKMR&D for Future Accelerator and DetectorHadron Spectroscopy and ExoticsHeavy Quark Mesons and BaryonsBeyond the Standard ModelString Theory Readership: Experimental and theoretical physicists and graduate students in the fields of particle physics, nuclear physics, astrophysics and cosmology.Keywords:High Energy Physics;Particle Physics;Electroweak;QCD;Heavy Quark;Neutrino;Particle Astrophysics;Hadron Spectroscopy;CP Violation;Quark Matter;Future Accelerator
Author : Grażyna Nowak (fizyka)
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (85 download)
Download or read book Rare B, D Meson Decays from Crystal Ball written by Grażyna Nowak (fizyka) and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
