A Search for the Rare and Forbidden Decays D0 V Ll ̄
Author : Eric M. Aitala
Publisher :
Page : 184 pages
File Size : 12,91 MB
Release : 2003
Category :
ISBN :
A Search for the Rare and Forbidden Decays D0 2!V L+ L-
Author :
Publisher :
Page : 105 pages
File Size : 38,19 MB
Release : 2003
Category :
ISBN :
Book Description
I report the results of a search for flavor-changing neutral current, leptonflavor, and lepton-number violating decays of the 3 and 4-body decay modes of the D0 (and its antiparticle) containing muons and electrons. Using data from Fermilab charm hadroproduction experiment E791, I examine modes with two leptons and either a [rho]0, $\bar{K}$0, or [Phi] vector meson or a non-resonant [pi][pi], K[pi], or KK pair of pseudoscalar mesons. No evidence for any of these decays is found. Therefore, branching-fraction upper limits, typically at the 10-4 level, are presented at the 90% confidence level for the 27 decay modes examined. Of these searches, 18 are investigations of decays without previous published results; several others have significantly improved sensitivity over previous results.
Search for Rare and Forbidden Decays of D0-]l+l-
Author :
Publisher :
Page : pages
File Size : 37,15 MB
Release : 2005
Category :
ISBN :
Book Description
Search for Rare and Forbidden Decays of D0-]l+l-
Author : C. Chen
Publisher :
Page : pages
File Size : 11,25 MB
Release : 2004
Category :
ISBN :
Book Description
We report on a search for the flavor-changing neutral current decays D{sup 0} {yields} e{sup +}e{sup -} and D{sup 0} {yields} {mu}{sup +}{mu}{sup -}, and the lepton-flavor violating decay D{sup 0} {yields} e{sup {+-}}{mu}{sup {-+}}. The measurement is based on 122fb{sup -1} of data collected by the BABAR detector at the PEP-II asymmetric e{sup +}e{sup -} collider. No evidence is found for any of the decays. The upper limits on the branching fractions, at the 90% confidence level, are 1.2 x 10{sup -6} for D{sup 0} {yields} e{sup +}e{sup -}, 1.3 x 10{sup -6} for D{sup 0} {yields} {mu}{sup +}{mu}{sup -}, and 8.1 x 10{sup -7} for D{sup 0} {yields} e{sup {+-}}{mu}{sup {-+}}.
Rare and Forbidden Decays of D Mesons
Author :
Publisher :
Page : pages
File Size : 11,15 MB
Release : 2001
Category :
ISBN :
Book Description
The authors summarize the results of two recent searches for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D, D{sub s}, and D° mesons (and their antiparticles) into modes containing muons and electrons. using data from Fermilab charm hadroproduction experiment E791, they examined D+ and D{sub s}+ [pi]ll and [Kappa]ll decay modes and the D° dilepton decay modes containing either l+l−, a [rho]°, {bar [Kappa]}*°, 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.
High Energy Physics - Proceedings Of The 25th International Conference (In 2 Volumes)
Author : Kok Khoo Phua
Publisher : World Scientific
Page : 1583 pages
File Size : 28,7 MB
Release : 1991-07-15
Category :
ISBN : 9814569410
Book Description
This proceedings contains the talks delivered at the plenary and parallel sessions. Topics covered include e⁺e⁻ Physics at Z0, String Theory and Theory of Extended Objects, High Energy pp Physics, Non-Accelerator Particle Physics, Conformal Field Theory, e⁺e⁻ Physics below Z⁰, Structure Functions and Deep Inelastic Scattering, Neutrino Physics, Recent Developments in 2-Dimensional Gravity, Lattice Gauge Theory and Computer Simulations, CP Violation , Accelerator Physics, Cosmology and Particle Physics, Interface Between Particle and Condensed Matter Physics, Detector R&D, and Astroparticle Physics.
Search for the Rare Decays B± → K±μ+μ− and B°d → K*μ+μ− with the DØ Experiment
Author : Andreas Wenger
Publisher :
Page : 109 pages
File Size : 35,18 MB
Release : 2009
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ISBN :
Book Description
Physics in Collision 16
Author : H. Castilla
Publisher : World Scientific
Page : 492 pages
File Size : 28,70 MB
Release : 1998
Category : Leptons (Nuclear physics)
ISBN : 9814530131
Book Description
"The "Physics in Collision" conference aims to provide an overview of the main topics of high energy physics. This annual international meeting consists of three days of exclusive review talks, given by invited speakers. As a result, it has taken on a unique character, ideal for those who wish to be brought up to date on the current status of particle physics."--Publisher's website.
Searches for Rare Or Forbidden Semileptonic Charm Decays
Author :
Publisher :
Page : 15 pages
File Size : 37,8 MB
Release : 2011
Category :
ISBN :
Book Description
We present searches for rare or forbidden charm decays of the form X{sub c} 2!h{sup ±}l{sup {-+}}l{sup ({prime})+}, where X{sub c} is a charm hardron (D+, D{sub s}+, or [Lambda]{sub c}+), h{sup {+-}} is a pion, kaon, or proton, and l{sup ({prime}){+-}} is an electron or muon. The analysis is based on 384 fb−1 of e+e− annihilation data collected at or close to the [Upsilon](4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the 35 decay modes that are investigated. We establish 90% confidence-level upper limits on the branching fractions between 1 x 10−6 and 44 x 10−6 depending on the channel. In most cases, these results represent either the first limits or significant improvements on existing limits for the decay modes studied.
A Study of CP Violation in B Meson Decays
Author :
Publisher :
Page : 340 pages
File Size : 17,27 MB
Release : 1995
Category : B mesons
ISBN :
