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Limits On Flavor Changing Neutral Currents In D0 Meson Decays
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Book Synopsis Limits on Flavor Changing Neutral Currents in D0 Meson Decays by :
Download or read book Limits on Flavor Changing Neutral Currents in D0 Meson Decays written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the CLEO II detector at CESR, we have searched for flavor changing neutral currents and lepton family number violations in D[sup 0] meson decays. The upper limits on the branching fractions for D[sup 0][yields][ell][sup+][ell][sup -] and D[sup 0][yields] X[sup 0][ell][sup+][ell][sup -] are in the range 10[sup -5] to 10[sup -4], where X[sup 0] can be a[pi][sup 0], K[sub s][sup 0], [eta], [rho][sup 0], [omega], [bar K]*[sup 0], or[phi] meson, and the[ell][sup+][ell][sup -] pair can be e[sup+]e[sup -], [mu][sup+][mu][sup -], or e[sup[+-]][mu][sup[-+]]. Although these limits are above the theoretical predictions, most are new or an order of magnitude lower than previous limits.
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.
Book Synopsis A Search for Flavour Changing Neutral Current Processes in Decays of Charmed Mesons by :
Download or read book A Search for Flavour Changing Neutral Current Processes in Decays of Charmed Mesons written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutral current interactions are known from studies of K meson decays to conserve flavor to a high precision. Although flavor changing neutral currents (FCNC) are forbidden in the Weinberg-Salam model, many extensions of the Standard Model allow such processes. We present preliminary upper limits on FCNC-mediated decays of charmed particles, namely D° .-->. ee−, D° .-->. .mu.mu.−, D° .-->. .mu.e and D+ .-->. .pi.+.mu.e.
Book Synopsis Search for Flavor-changing-neutral-current D Meson Decays by :
Download or read book Search for Flavor-changing-neutral-current D Meson Decays written by and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the flavor-changing-neutral-current process c → u??− using 1.3 fb−1 of p{bar p} collisions at √s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the D+{sub s} and D+ →??+ →?+?−?+ final states with significance greater than four standard deviations above background for the D+ state. We search for the continuum decay of D+ →?+?+?− in the dimuon invariant mass spectrum away from the? resonance. We see no evidence of signal above background and set a limit of B(D+ →?+?+?−)
Book Synopsis Rare and Forbidden Decays of D Mesons by :
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.
Book Synopsis Flavor-changing Neutral Currents: Present And Future Studies: Proceedings Of The Symposium by : Cline David B
Download or read book Flavor-changing Neutral Currents: Present And Future Studies: Proceedings Of The Symposium written by Cline David B and published by World Scientific. This book was released on 1997-11-29 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial differential equations form an essential part of the core mathematics syllabus for undergraduate scientists and engineers. The origins and applications of such equations occur in a variety of different fields, ranging from fluid dynamics, electromagnetism, heat conduction and diffusion, to quantum mechanics, wave propagation and general relativity.This volume introduces the important methods used in the solution of partial differential equations. Written primarily for second-year and final-year students taking physics and engineering courses, it will also be of value to mathematicians studying mathematical methods as part of their course. The text, which assumes only that the reader has followed a good basic first-year ancillary mathematics course, is self-contained and is an unabridged republication of the third edition published by Longman in 1985.
Book Synopsis Search for Flavor Changing Neutral Current Decays of Charm Mesons by : Nicholas James Witchey
Download or read book Search for Flavor Changing Neutral Current Decays of Charm Mesons written by Nicholas James Witchey and published by . This book was released on 1996 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Flavor Changing Neutral Currents and Lepton Family Number Violation in Neutral Two-body Charm Decays by : David Aaron Pripstein
Download or read book A Search for Flavor Changing Neutral Currents and Lepton Family Number Violation in Neutral Two-body Charm Decays written by David Aaron Pripstein and published by . This book was released on 1997 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Rare Charm Meson Decays at FNAL E791 by :
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.
Book Synopsis Limit on the Rare Decay B →??− K{sup {plus_minus}} by :
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.
Book Synopsis Flavour Mixing and CP Violation by : J. Thanh Van Tran
Download or read book Flavour Mixing and CP Violation written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1985 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gluons and Heavy Flavours by : J. Thanh Van Tran
Download or read book Gluons and Heavy Flavours written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1983 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gauge Theories of the Strong, Weak, and Electromagnetic Interactions by : Chris Quigg
Download or read book Gauge Theories of the Strong, Weak, and Electromagnetic Interactions written by Chris Quigg and published by Princeton University Press. This book was released on 2013-09-23 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thoroughly revised edition of a landmark textbook on gauge theories and their applications to particle physics This completely revised and updated graduate-level textbook is an ideal introduction to gauge theories and their applications to high-energy particle physics, and takes an in-depth look at two new laws of nature—quantum chromodynamics and the electroweak theory. From quantum electrodynamics through unified theories of the interactions among leptons and quarks, Chris Quigg examines the logic and structure behind gauge theories and the experimental underpinnings of today's theories. Quigg emphasizes how we know what we know, and in the era of the Large Hadron Collider, his insightful survey of the standard model and the next great questions for particle physics makes for compelling reading. The brand-new edition shows how the electroweak theory developed in conversation with experiment. Featuring a wide-ranging treatment of electroweak symmetry breaking, the physics of the Higgs boson, and the importance of the 1-TeV scale, the book moves beyond established knowledge and investigates the path toward unified theories of strong, weak, and electromagnetic interactions. Explicit calculations and diverse exercises allow readers to derive the consequences of these theories. Extensive annotated bibliographies accompany each chapter, amplify points of conceptual or technical interest, introduce further applications, and lead readers to the research literature. Students and seasoned practitioners will profit from the text's current insights, and specialists wishing to understand gauge theories will find the book an ideal reference for self-study. Brand-new edition of a landmark text introducing gauge theories Consistent attention to how we know what we know Explicit calculations develop concepts and engage with experiment Interesting and diverse problems sharpen skills and ideas Extensive annotated bibliographies
Book Synopsis Search for Flavor Changing Neutral Currents K by :
Download or read book Search for Flavor Changing Neutral Currents K written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for the flavor-changing neutral-current decays K/sub L/ e e, K/sub L/ e e and K/sub L/ /sup +-/e/sup /minus plus//. Limits obtained for these processes are BR(K/sub L/ e e)
Book Synopsis Proceedings of Physics in Collision 4 by : Abraham Seiden
Download or read book Proceedings of Physics in Collision 4 written by Abraham Seiden and published by Atlantica Séguier Frontières. This book was released on 1984 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Flavor Changing Neutral Currents and Lepton Family Number Violation in Neutral Two-body Charm Decays by :
Download or read book A Search for Flavor Changing Neutral Currents and Lepton Family Number Violation in Neutral Two-body Charm Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a search for three rare/forbidden neutral charm decays, D[sup 0][yields][mu]e, D[sup 0][yields][mu][mu], and D[sup 0][yields] ee. This study was based on data collected in Experiment E789 at the Fermi National Accelerator Laboratory using 800 GeV/c proton-gold interactions. Two statistical analyses are presented, one with background subtraction and the other without background subtraction. No evidence is found for any of the decays and the following upper limits are presented at the 90% confidence level.
Book Synopsis Lepton And Photon Interactions At High Energies: Lepton-photon 2003 - Proceedings Of The Xxi International Symposium by : Harry W K Cheung
Download or read book Lepton And Photon Interactions At High Energies: Lepton-photon 2003 - Proceedings Of The Xxi International Symposium written by Harry W K Cheung and published by World Scientific. This book was released on 2004-02-20 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences
