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Absolute Measurement Of Hadronic Branching Fractions Of Charmed Strange Mesons
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Book Synopsis Absolute Measurement of Hadronic Branching Fractions of Charmed-strange Mesons by : Peter Uchenna Ezenweze Onyisi
Download or read book Absolute Measurement of Hadronic Branching Fractions of Charmed-strange Mesons written by Peter Uchenna Ezenweze Onyisi and published by . This book was released on 2008 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The branching fractions of decays of the D+s meson normalize many measurements of processes involving charm quarks. Using 298 pb-1 of e+e- collisions recorded by the CLEO-c detector at the Cornell Electron Storage Ring, we determine absolute branching fractions for eight D+s decays with a double tag technique. In particular we determine the branching fraction BD+s & rarr; K-K +pi+) = (5.50 +/- 0.23 +/- 0.16)%, where the uncertainties are statistical and systematic respectively. The uncertainty in these determinations is roughly a factor of two better than previous world averages. We also search for possible CP asymmetries and provide partial branching fractions for kinematic subsets of the K-K+pi + decay mode.
Book Synopsis Measurement of Absolute Hadronic Branching Fractions of D Mesons by : Xin Shi
Download or read book Measurement of Absolute Hadronic Branching Fractions of D Mesons written by Xin Shi and published by . This book was released on 2011 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 818 pb[-]1 of e+ e[-] collisions recorded at the [psi](3770) resonance with the CLEO-c detector at CESR, we determine absolute hadronic branching fractions of charged and neutral D mesons using a double tag technique. Among measurements for three D0 and six D+ modes, we obtain reference branching fractions B(D0 [RIGHTWARDS ARROW] K [-] [pi]+) = (3.906 ± 0.021 ± 0.062)% and B(D+ [RIGHTWARDS ARROW] K [-] [pi]+ [pi]+) = (9.157 ± 0.059 ± 0.125)%, where the first uncertainty is statistical, the second is systematic errors. Using an independent determination of the integrated luminosity, we also extract the cross sections [sigma](e+ e[-] [RIGHTWARDS ARROW] D0 D0) = (3.650 ± 0.017 ± 0.083) nb and [sigma](e+ e[-] [RIGHTWARDS ARROW] D+ D[-]) = (2.920 ± 0.018 ± 0.062) nb at a center of mass energy, Ecm = 3774 ± 1 MeV.
Book Synopsis Spectroscopy and Decays of Charmed Strange Mesons by : Selina Zhao Li
Download or read book Spectroscopy and Decays of Charmed Strange Mesons written by Selina Zhao Li and published by . This book was released on 2004 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadronic Decays of the D/S Meson by : Steven R. Wasserbaech
Download or read book Hadronic Decays of the D/S Meson written by Steven R. Wasserbaech and published by . This book was released on 1989 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadronic Multiparticle Production by : Peter A. Carruthers
Download or read book Hadronic Multiparticle Production written by Peter A. Carruthers and published by World Scientific. This book was released on 1988 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: http://www.worldscientific.com/worldscibooks/10.1142/0492
Book Synopsis Heavy Flavour Physics: a Probe of Nature’s Grand Design by : Società italiana di fisica
Download or read book Heavy Flavour Physics: a Probe of Nature’s Grand Design written by Società italiana di fisica and published by IOS Press. This book was released on 1998 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lectures collected in this book present a comprehensive review of the current knowledge of heavy-quark physics, from the points of view of both theory and experiment. Heavy Flavour Physics has accomplished enormous progress during the last few years: the last heavy quark has been discovered and the quality of the collected data on the other relatively lighter quarks has dramatically improved. On the theory side, noticeable progress has been reported on new calculations of decay rates based on various techniques, such as QCD sum rules, heavy-quark mass expansion and lattice QCD. The theory of heavy quark production is constantly improving and awaiting new results. Nevertheless there are strong reasons to believe that the Standard Model of High Energy Physics is incomplete. It exhibits very peculiar patterns for which it offers no explanation. The basic constituents of matter are arranged into three seemingly identical generations or families of quarks and leptons, differing merely in their masses. The pattern in the fermion masses, why they are families and why there are three of them is not yet understood. Furthermore it is known that at least within the standard model there is an intimate connection between the replication of families and the gateway of CP violation, in addition, the latter phenomenon is a crucial ingredient in explaining why our universe is made up almost exclusively of matter rather than being more or less matter-antimatter symmetric. How and to what extent can Heavy Flavour Physics impact on these questions? Does it offer novel windows onto New Physics beyond the Standard Model in general and onto new symmetries, such as Supersymmetry in particular? These questions constitute the central theme of this book. The material treated in this publication may serve as reference for the segment of the high-energy community actively engaged in heavy-quark physics.
Book Synopsis A Measurement of the Hadronic Branching Ratio of the [W]Boson to Charm and Strange Quarks Using Strange Hadrons in the Final Stage by : Stephen Dallison
Download or read book A Measurement of the Hadronic Branching Ratio of the [W]Boson to Charm and Strange Quarks Using Strange Hadrons in the Final Stage written by Stephen Dallison and published by . This book was released on 2002 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-08 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadronic Decays of the D/sub S/ Meson by :
Download or read book Hadronic Decays of the D/sub S/ Meson written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The D/sub s/ is the lowest-lying pseudoscalar meson containing charm and anti-strange quarks. Evidence for this state was first reported in 1977, although more recent observations disagree with some of the early results. Since 1983 the weakly decaying D/sub s/+ has been observed in many experiments. Relative branching fractions have been measured for many non-leptonic decay modes, including D/sub s/+ 2!??+,??+?+?/sup /minus//, /bar K/*°K+, and f0(975)?+. The absolute branching fractions are estimated in high energy e+e/sup /minus// annihilation from the observed numbers of reconstructed D/sub s/+ decays and the expected D/sub s/+ production cross section. The lowest-lying vector c/bar s/ meson, the D/sub s/*+, has also been seen in its decay to?D/sub s/+. Weak decays of the heavy quark and lepton flavors are relevant to the development of the Standard Model of both the electroweak and the strong interactions. Measurements of charmed particle weak decay are useful for determining the parameter of the Standard Model and for testing phenomenological models which include strong effects. 83 refs., 56 figs., 12 tabs.
Book Synopsis Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes) by : Zygmunt Ajduk
Download or read book Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes) written by Zygmunt Ajduk and published by World Scientific. This book was released on 1997-04-11 with total page 1878 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 28th conference from the Rochester series was the major high energy physics conference in 1996. Volume one contains short reports on new theoretical and experimental results. Volume two consists of the review talks presented in the plenary sessions.
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precision Tests Of The Standard Electroweak Model by : Paul G Langacker
Download or read book Precision Tests Of The Standard Electroweak Model written by Paul G Langacker and published by World Scientific. This book was released on 1995-02-23 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: High precision measurements of weak neutral current and charged current processes and of the properties of the Z and W bosons have established the standard electroweak model as correct down to a distance scale of 10-16 cm, and are a sensitive probe of possible underlying physics. In this book, all aspects of the program are considered in detail, including the structure of the standard model, radiative corrections, high precision experiments, and their implications. The major classes of experiments are surveyed, covering the experiments themselves, the data analysis, results, and prospects.This volume is a detailed reference for theoretical and experimental researchers, as well as an introductory text for advanced students.
Book Synopsis Proceedings of the 1989 International Symposium on Lepton and Photon Interactions at High Energies by : Michael Riordan
Download or read book Proceedings of the 1989 International Symposium on Lepton and Photon Interactions at High Energies written by Michael Riordan and published by World Scientific Publishing Company. This book was released on 1990 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Form Factors and Branching Ratio for the Charmed Meson Semileptonic Decay Mode D--−K*0(892)[mu]+[nu][subscript Mu] by : Steven W. Culy
Download or read book Measurement of the Form Factors and Branching Ratio for the Charmed Meson Semileptonic Decay Mode D--−K*0(892)[mu]+[nu][subscript Mu] written by Steven W. Culy and published by . This book was released on 1996 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Relative Branching Fractions for D0 Meson Cabibbo Suppressed Hadronic Decays, from the CDF Secondary Vertex Trigger Sample at the Tevatron Collider by : Sandro De Cecco
Download or read book Measurement of Relative Branching Fractions for D0 Meson Cabibbo Suppressed Hadronic Decays, from the CDF Secondary Vertex Trigger Sample at the Tevatron Collider written by Sandro De Cecco and published by . This book was released on 2002 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of Charmed Mesons Seen in Hadronic Interactions by : Torbjörn Moa
Download or read book Properties of Charmed Mesons Seen in Hadronic Interactions written by Torbjörn Moa and published by . This book was released on 1984 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Absolute Branching Fractions for $D-̂_s\!\rightarrow\!\ell-̂\bar{\nu}_{\ell}$ and Extraction of the Decay Constant $f_{D_s}$ by :
Download or read book Measurement of the Absolute Branching Fractions for $D-̂_s\!\rightarrow\!\ell-̂\bar{\nu}_{\ell}$ and Extraction of the Decay Constant $f_{D_s}$ written by and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The absolute branching fractions for the decays D{sub s}− → l−{bar?}{sub l} (l = e,?, or?) are measured using a data sample corresponding to an integrated luminosity of 521 fb−1 collected at center of mass energies near 10.58 GeV with the BABAR detector at the PEP-II ee− collider at SLAC. The number of D{sub s}− mesons is determined by reconstructing the recoiling system DKX? in events of the type e+e−DKXD*{sub s}−, where D*{sub s}− → D{sub s}−? and X represents additional pions from fragmentation. The D{sub s}− → l°{nu}{sub {ell}} events are detected by full or partial reconstruction of the recoiling system DKX?{ell}. The branching fraction measurements are combined to determine the D{sub s}− decay constant f{sub D{sub s}} = (258.6 ± 6.4 ± 7.5) MeV, where the first uncertainty is statistical and the second is systematic.
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