Download or read book Search for the Decay of the Long lived Neutral Kaon Into an Electron positron Pair in the KTeV Experiment written by Valeri Nikolaevich Jejer and published by . This book was released on 2001 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Search for the Decay of the Long lived Neutral Kaon Into an Electron and a Positron written by John William Belz and published by . This book was released on 1993 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First observation of the decay of the long lived neutral kaon into an electron and a positron written by Vassilios Ioannis Vassilakopoulos and published by . This book was released on 1998 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Search for the Rare Decay of the Long lived Neutral Kaon to a Muon and an Electron written by David Laurence Wagner and published by . This book was released on 1990 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Search for the Decay long Lived Neutral Kaon to Muon and Electron written by Roy Kang Lee and published by . This book was released on 1998 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CERN Courier written by European Organization for Nuclear Research and published by . This book was released on 1996 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This journal is devoted to the latest research on physics, publishing articles on everything from elementary particle behavior to black holes and the history of the universe.
Download or read book A Search for the Decay of a B Meson Into a Kaon and a Tau Lepton Pair at the BaBar Experiment written by and published by . This book was released on 2016 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flavour changing neutral current (FCNC) process, $B^+$ → $K^+ [tau]^+ [tau]^-$ highly suppressed in the Standard Model (SM). This decay is forbidden at tree level and only occurs at lowest order via one-loop diagrams.$B^+$ → $K^+ [tau]^+ [tau]^-$ thus has the potential to provide a stringent test of the SM and a fertile ground for new physics searches. Contributions due to virtual particles in the loop allow one to probe, at relatively low energies, new physics at large mass scales. We search for the rare FCNC process $B^+$ → $K^+ [tau]^+ [tau]^-$ using data collected by the BaBaR detector at the SLAC National Accelerator Laboratory. The BaBaR data sample corresponds to a total integrated luminosity, at the energy of the [Tau](4S) resonance, of 424.4 $fb^-1$ and 471 million $B\bar{B}$ pairs. For this search, hadronic $B_{tag}$ reconstruction is employed, where one B is exclusively reconstructed via one of many possible hadronic modes. The remaining decay products in an event are then attributed to the signal B, on which the search for $B^+$ → $K^+ [tau]^+ [tau]^-$ is performed. Each [tau] is required to decay leptonically, into either an electron or a muon and the lepton neutrinos. Furthermore, a multi-variate analysis technique (neural network) is used to select for signal events and suppress dominant background modes. No significant signal is observed. The resulting branching fraction is measured to be $\beta(B^+$ → $K^+ [tau]^+)$ = $1.31^{0:66}_{-0:61}$(stat.) $^{+0:35}_{-0:25}$(sys.) x 10$^{-3}$, which is consistent with zero at the 1.9[sigma] level, with an upper limit of 2.25 x 10$^{-3}$, at the 90% confidence level.
Download or read book Search for the Rare Decay Neutral Kaon long Going to Neutral Pion neutrino antineutrino written by Jiasen Ma and published by . This book was released on 2009 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for K0L & rarr; pi0nunu was performed on data taken during the last Run of the E391a experiment at KEK. Blind analysis approach was adopted. The acceptance for the signal was improved from previous analysis by about 40% because of a better understanding of the background. With (3.48 +/- 0.25) * 109 K0L decays, we found no candidate events. An upper limit of 6.96 x 10-8 on the K0L & rarr; pi0nunu branching ratio was set at the 90% confidence level.
Download or read book A Measurement of the Rate at which the Long lived Neutral Kaon Decays to Two Muons written by Philip D. Rubin and published by . This book was released on 1989 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of the 2 Neutral pion Decay of the Long lived Neutral K meson written by Paul C. Wheeler and published by . This book was released on 1968 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2 neutral-pion CP-violating decay of the neutral-K2-meson was studied in a recent experiment at the Princeton-Pennsylvania Accelerator. The energy spectrum of generated gamma-rays was obtained for the center-of-mass system of the neutral-K2 and used to measure the branching ratio (neutral-K2 to 2 neutral-pions)/(neutral-K2 to all modes). An upper limit of 0.0031 was obtained by normalizing to the neutral-K2 to 3 neutral-pion decay mode. (Author).
Download or read book On the decay branching ratio of long lived neutral kaons into two muons written by David Alan Ambrose and published by . This book was released on 1998 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Physics Reference Library written by Herwig Schopper and published by Springer Nature. This book was released on 2020 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Download or read book Search for the Decay of Neutral Short Lived Kaons Into Two Muons written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of the Neutral D meson Decay to a Neutral Kaon and Two Neutral Pions written by Norman A. Lowrey and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a Dalitz plot analysis of D0 to K0S PI0 PI0 using the CLEO-c data set of 818 inverse picobarns of positron-electron collisions accumulated at center-of-mass energy 3.77 GeV. This corresponds to about 3 million D0-anti-D0 pairs from which we select 1260 tagged candidates with a background of roughly 6%. We find that S-wave features dominate the PI0 PI0 axis of the Dalitz plot, contributing about one-third of the total decay rate, while the K*(892) is the dominant K0S PI0 contribution. Using three tag modes and correcting for quantum correlations we determine that the D0 to K0S PI0 PI0 branching ratio is 1.059% with a statistical uncertainty of 0.049% and a systematic uncertainty of 0.050%.
Download or read book SEARCH FOR THE RARE KAON DECAY K bar nu written by and published by . This book was released on 2003 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the search for the rare decay K →?+?{bar {nu}} in the pion momentum region 140 MeV/c ≤ P{sub {pi}+} ≤ 195 MeV/c. This is a Flavor Changing Neutral Current (FCNC) decay which is forbidden to the first order in the Standard Model (SM) by the GIM mechanism. However, this decay mode is allowed in the second order by two Z-Penguin and one box diagram and is expected to have a branching ratio of (0.72 ± 0.21) x 10−1°. This decay mode is sensitive to the coupling of top to down quark and therefore a measurement of the branching ratio for this decay mode provides a measurement of the Cabibbo-Kobayashi-Maskawa matrix element V{sub td}. The recent observation of two events in the pion momentum region 211 MeV/c ≤ P{sup {pi}+} ≤ 229 MeV/c estimates a branching ratio of 1.57{sub -0.82}{sup +1.75} x 10−1° for the same decay mode. We have extended the search for this decay to the lower pion momentum region. Data collected by the Experiment E787 at Brookhaven National Laboratory during the 1996 and 1997 run were analyzed in this thesis.
Download or read book Study of Electron positron Pair Decay and of Two Quantum Emission from Nuclei written by R. J. Ellison and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations of the Decay Modes of the Neutral Longlived K meson written by Bernard Marie Karel Nefkens and published by . This book was released on 1967 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
