Measurement Of Absolute Hadronic Branching Fractions Of D Mesons PDF Download
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| Author | : Xin Shi |
| Publisher | : |
| Total Pages | : 103 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download Measurement of Absolute Hadronic Branching Fractions of D Mesons Book in PDF, ePub and Kindle
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.
| Author | : Peter Uchenna Ezenweze Onyisi |
| Publisher | : |
| Total Pages | : 183 |
| Release | : 2008 |
| Genre | : |
| ISBN | : 9780549846154 |
Download Absolute Measurement of Hadronic Branching Fractions of Charmed-strange Mesons Book in PDF, ePub and Kindle
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.
| Author | : |
| Publisher | : |
| Total Pages | : 50 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download D Meson Hadronic Decays at CLEO-c Book in PDF, ePub and Kindle
The recent CLEO-c results on hadronic decays of D and D{sub s} mesons are presented. First the absolute branching fractions for D and D{sub s} mesons using a double tag technique are discussed, then are the Cabibbo suppressed decays and doubly Cabibbo suppressed decays. Finally, I present the inclusive and rare decay modes and other measurements from CLEO-c. These decays illuminate a wide range of physics. A brief theoretical introduction is given before the corresponding discussion on measurement.
| Author | : Patricia M. McDonough |
| Publisher | : |
| Total Pages | : 804 |
| Release | : 1985 |
| Genre | : Leptons (Nuclear physics) |
| ISBN | : |
Download The Sixth Quark Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 8 |
| Release | : 2010 |
| Genre | : |
| ISBN | : |
Download Measurement of the Absolute Branching Fractions for $D-̂_s\!\rightarrow\!\ell-̂\bar{\nu}_{\ell}$ and Extraction of the Decay Constant $f_{D_s}$ Book in PDF, ePub and Kindle
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.
| Author | : Sandro De Cecco |
| Publisher | : |
| Total Pages | : 179 |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
Download Measurement of Relative Branching Fractions for D0 Meson Cabibbo Suppressed Hadronic Decays, from the CDF Secondary Vertex Trigger Sample at the Tevatron Collider Book in PDF, ePub and Kindle
| Author | : Peter A. Carruthers |
| Publisher | : World Scientific |
| Total Pages | : 714 |
| Release | : 1988 |
| Genre | : Science |
| ISBN | : 9789971505585 |
Download Hadronic Multiparticle Production Book in PDF, ePub and Kindle
http://www.worldscientific.com/worldscibooks/10.1142/0492
| Author | : Hesheng Chen |
| Publisher | : World Scientific |
| Total Pages | : 1424 |
| Release | : 2005-05-03 |
| Genre | : Science |
| ISBN | : 9814481270 |
Download High Energy Physics Book in PDF, ePub and Kindle
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 | : Jose Feliciano Benitez |
| Publisher | : Stanford University |
| Total Pages | : 320 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download Measurement of the D_s Leptonic Decay Constant F_{D_s} and Observation of New Resonances Decaying to D^(*)pi Book in PDF, ePub and Kindle
The absolute branching fractions for the decays $D^-_s\rightarrow\ell^-\bar{\nu}_{\ell}$ ($\ell=e$, $\mu$, or $\tau$) 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 $e^+e^-$ collider at SLAC. The number of $D_s^-$ mesons is determined by reconstructing the recoiling system $DKX\gamma$ in events of the type $e^+e^-{\rightarrow}DKXD^{*-}_s$, where $D^{*-}_s\rightarrow D^-_s\gamma$ and $X$ represents additional pions from fragmentation. The $D^-_s\rightarrow\ell^-\nu_{\ell}$ events are detected by full or partial reconstruction of the recoiling system $DKX\gamma\ell$. The following results are obtained: $B(D^-_s \to \mu^- \nu) = (6.02 \pm 0.38 \pm 0.34) \times 10^{-3}$, $B(D^-_s \to \tau^- \nu) = (5.00 \pm 0.35 \pm 0.49) \times 10^{-2}$, and $B(D^-_s \to e^- \nu)
| Author | : American Physical Society. Division of Particles and Fields. Meeting |
| Publisher | : |
| Total Pages | : 860 |
| Release | : 2005 |
| Genre | : CP violation (Nuclear physics) |
| ISBN | : |
Download Proceedings of the Meeting of the Division of Particles and Fields of the American Physical Society for the Year 2004 (DPF2004) Book in PDF, ePub and Kindle
