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A Search For Flavor Changing Neutral Currents And Lepton Family Number Violation In Neutral Two Body Charm Decays
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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 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 New Physics With New Experiments - Proceedings Of Xvi Kazimierz Meeting On Elementary Particle Physics by : Zygmunt Ajduk
Download or read book New Physics With New Experiments - Proceedings Of Xvi Kazimierz Meeting On Elementary Particle Physics written by Zygmunt Ajduk and published by World Scientific. This book was released on 1994-06-21 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gives an up-to-date, useful review of the recent results and new ideas concerning the following topics: precision tests of the standard model, search for Higgs bosons, CP violation, flavour physics, neutrino physics, testing extensions of the standard model, supersymmetry, particle physics, cosmology and new results in strong interactions.
Book Synopsis A Search for Effective Flavour Changing Neutral Currents in K/sub L/° Decays by :
Download or read book A Search for Effective Flavour Changing Neutral Currents in K/sub L/° Decays written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A dedicated search for the decays K/sub L/° → [mu]e, K/sub L/° → ee and K/sub L/° → [mu][mu], was carried out at the Brookhaven National Laboratory AGS (E780). The data obtained were also used in a search for the three-body decays K/sub L/° → [pi]°l /sup /plus/1/sup -/. The two body modes were normalized to the kinelatically similar, CP violating, decay K/sub L/° → [pi]/sup (plus//[pi]/sup -/; whereas the three body modes were normalized to the decay K/sub L/° /yields/ [pi]°/pi//sup /plus//pi//sup /minus//. The search was performed on a sample of K° mesons produced in the forward direction by the interactions of 29 GeV protons on a copper target, and decaying in a 3 meter long region, starting augmented by a hydrogen Cerenkov counter and a lead glass electromagnetic calorimeter, for electron identification, and by a range stack, for muon identification. 9 refs., 5 figs., 2 tabs.
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 Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Flavor-changing Neutral Current and Lepton-flavor Violating Decays of D[sup 0] --] [ell][sup +] [ell][sup -]. by :
Download or read book Search for Flavor-changing Neutral Current and Lepton-flavor Violating Decays of D[sup 0] --] [ell][sup +] [ell][sup -]. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for the flavor-changing neutral current decays D[sup 0] --> e[sup +]e[sup -] and D[sup 0] --> [mu][sup +][mu][sup -], and the lepton-flavor violating decay D[sup 0] --> e[sup [+-]][mu][sup [-+]]. The measurement is based on 122 fb[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] --> e[sup +]e[sup -], 1.3 x 10[sup -6] for D[sup 0] --> [mu][sup +][mu][sup -], and 8.1 x 10[sup -7] for D[sup 0] --> e[sup [+-]][mu][sup [-+]].
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.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Flavor-changing Neutral Current and Lepton-flavor Violating Decays of D° --] L L− by :
Download or read book Search for Flavor-changing Neutral Current and Lepton-flavor Violating Decays of D° --] L L− written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for the flavor-changing neutral current decays D° --> ee− and D° -->?+?−, and the lepton-flavor violating decay D° --> e{sup {+-}}?{sup {-+}}. The measurement is based on 122 fb−1 of data collected by the BABAR detector at the PEP-II asymmetric e+e− 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 10−6 for D° --> e+e−, 1.3 x 10−6 for D° -->?+?−, and 8.1 x 10−7 for D° --> e{sup {+-}}?{sup {-+}}.
Book Synopsis B / K Decays and Novel Flavor Factories by : David Cline
Download or read book B / K Decays and Novel Flavor Factories written by David Cline and published by American Institute of Physics. This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: From a February 1991 conference in Santa Monica, California, 22 papers by particle, theoretical, and accelerator physicists discuss flavor physics and novel flavor factories (aspects of the subatomic world). CP violation and the search for flavor-changing weak neutral currents are covered extensivel
Book Synopsis Search for D0 - D0bar Mixing and Rare Charm Decays by : U. Egede
Download or read book Search for D0 - D0bar Mixing and Rare Charm Decays written by U. Egede and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a dataset acquired by the BABAR experiment running on and near the {Upsilon}(4S) resonance from 1999-2002, an upper limit is set on the rate of D{sup 0}-{bar D}{sup 0} mixing using the decay mode D*{sup +} {yields} D{sup 0}{pi}{sup +}, followed by a semi-leptonic decay of the D{sup 0}. Results are compared to previous BABAR analysis using hadronic decays. We also set limits on the flavor-changing neutral current decays D{sup 0} {yields} e{sup +}e{sup -} ({mu}{sup +}{mu}{sup -}) and the lepton-flavor violation decays D{sup 0} {yields} e{sup {+-}}{mu}{sup {-+}}.
Book Synopsis Heavy Flavor Decays of the Z0 and a Search for Flavor Changing Neutral Currents by :
Download or read book Heavy Flavor Decays of the Z0 and a Search for Flavor Changing Neutral Currents written by and published by . This book was released on 2004 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented here are the results of a direct search for flavor changing neutral currents via the rare process Z° → bs and a measurement of R{sub bs} = [Lambda](Z° → bs)/[Lambda](Z° → hadrons). Because the decays Z° → b{bar b} and Z° → c{bar c} contribute significant backgrounds to Z° → bs, simultaneous measurements of R{sub b} = [Lambda](Z° → b{bar b})/[Lambda](Z° → hadrons) and R{sub c} = [Lambda](Z° → c{bar c})/[Lambda](Z° → hadrons) were also made. The standard double tag technique was extended and self calibrating tags were used for s, c, and b quarks. These measurements were made possible by the unique capabilities of the SLAC Large Detector (SLD) at the Stanford Linear Accelerator Center (SLAC): The b and c tags relied upon the SLD's VXD3 307 megapixel CCD vertex detector for topological and kinematic reconstruction of the B and D decay vertices; the s tag identified K{sup {+-}} mesons using the particle identification capabilities of SLD's Cherenkov Ring Imaging Detector (CRID), and K{sub S}° mesons and [Lambda] hadrons by kinematic reconstruction of their decay vertices in SLD's 5120 channel central drift chamber (CDC) particle tracking system.
Book Synopsis Searches for Rare Leptonic and Semileptonic Charm Decays at BaBar by :
Download or read book Searches for Rare Leptonic and Semileptonic Charm Decays at BaBar written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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/° .-->. .pi.°ee/sup /minus//, K/sub L/° .-->. ee/sup /minus// and K/sub L/° .-->. .mu./sup +-/e/sup /minus plus//. Limits obtained for these processes are BR(K/sub L/° .-->. .pi.°e+e/sup /minus//) 3.2 x 10/sup /minus/7/, BR(K/sub L/° .--. e+e/sup /minus//) 1.2 x 10/sup /minus/9/, BR(K/sub L/° .--. .mu./sup +-/e/sup /minus plus//)
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