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Author :
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (931 download)
Download or read book Matter-antimatter Asymmetry of B-quark and B-meson Decays written by and published by . This book was released on 2000 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hossein Mehrban
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (595 download)
Download or read book Matter-antimatter Asymmetry of B-quark and B-meson Decays written by Hossein Mehrban and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shahram Rahatlou
Publisher :
ISBN 13 :
Total Pages : 524 pages
Book Rating : 4.:/5 (318 download)
Download or read book Observation of Matter-antimatter Asymmetry in the B° Meson System written by Shahram Rahatlou and published by . This book was released on 2002 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observation of Matter-Antimatter Asymmetry in the Neutral B Meson System written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, a measurement of CP-violating effects in decays of neutral B meson is presented. The data sample for this measurement consists of about 88 million [Upsilon](4S) [yields] B[bar B] decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy e[sup +]e[sup -] collider, located at the Stanford Linear Accelerator Center. One neutral B meson is fully reconstructed in the CP eigenstates J/[psi] K[sub S][sup 0], [psi](2S)K[sub S][sup 0], [chi][sub c1]K[sub S][sup 0], and [eta][sub c]K[sub S][sup 0], or in the flavor eigenstates D(*)[sup -] [pi][sup +]/[rho][sup +]/a[sub 1][sup +] and J/[psi] K*[sup 0] (K*[sup 0] [yields] K[sup +][pi][sup -]). The other B meson is determined to be either a B[sup 0] or a [bar B][sup 0], at the time of its decay, from the properties of its decay products. The proper time [Delta]t elapsed between the decay of the two mesons is determined by reconstructing their decay vertices, and by measuring the distance between them. The CP asymmetry amplitude sin2[beta] is determined by the distributions of [Delta]t in events with a reconstructed B meson in CP eigenstates. The detector resolution and the b-flavor-tagging parameters are constrained by the [Delta]t distributions of events with a fully reconstructed flavor eigenstate. From a simultaneous maximum-likelihood fit to the [Delta]t distributions of all selected events in CP and flavor eigenstates, the value of sin2[beta] is measured to be 0.755 [+-] 0.074(stat) [+-] 0.030(syst). This value is in agreement with the Standard Model prediction, and represents a successful test of the Kobayashi-Maskawa mechanism of CP violation.
Author : Sheldon Stone
Publisher : World Scientific
ISBN 13 : 9789810218362
Total Pages : 676 pages
Book Rating : 4.2/5 (183 download)
Download or read book B Decays written by Sheldon Stone and published by World Scientific. This book was released on 1994 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.
Author : Livio Lanceri
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (316 download)
Download or read book CP Violation in B Meson Decays written by Livio Lanceri and published by . This book was released on 2005 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: CP violation is intimately connected with the puzzle of matter-antimatter asymmetry and baryogenesis. In the Standard Model of particle physics, the observed CP violation phenomena are accounted for by the Cabibbo-Kobayashi-Maskawa mechanism involving a phase in the quark mixing matrix. This paper is devoted to a review of the experimental status of CP violation in the decays of B mesons.
Author : Lei Zhang
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (316 download)
Download or read book Rare B Meson Decays With Omega Mesons written by Lei Zhang and published by . This book was released on 2006 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare charmless hadronic B decays are particularly interesting because of their importance in understanding the CP violation, which is essential to explain the matter-antimatter asymmetry in our universe, and of their roles in testing the ''effective'' theory of B physics. The study has been done with the BABAR experiment, which is mainly designed for the study of CP violation in the decays of neutral B mesons, and secondarily for rare processes that become accessible with the high luminosity of the PEP-II B Factory. In a sample of 89 million produced B{bar B} pairs on the BABAR experiment, we observed the decays B{sup 0} {yields} {omega}K{sup 0} and B{sup +} {yields} {omega}{rho}{sup +} for the first time, made more precise measurements for B{sup +} {yields} {omega}h{sup +} and reported tighter upper limits for B {yields} {omega}K* and B{sup 0} {yields} {omega}{rho}{sup 0}.
Author : Shahram Rahatlou
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (898 download)
Download or read book Observation of Matter-Antimatter Asymmetry in the Neutral B Meson System written by Shahram Rahatlou and published by . This book was released on 2002 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kumar Rajeev
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783846589786
Total Pages : 232 pages
Book Rating : 4.5/5 (897 download)
Download or read book Exclusive B Decays to Charmonium and Meson with the Belle Detector written by Kumar Rajeev and published by LAP Lambert Academic Publishing. This book was released on 2014-02 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic progress has been made in particle physics during the past three decades. The B physics is one of the most exciting and rich field in today's world of particle physics to test the Standard Model and to explore the new physics. One of the most mysterious phenomena in particle physics that remains unresolved for a long time is the CP violation which is directly related to matter-antimatter asymmetry. Until recently, the CP violation was seen only in K\bar K system and it was expected to be significantly large in B\bar B system. In the summer of 2001 the presence of CP violation in the B meson system was established by the Belle collaboration (and simultaneously by the BaBar collaboration) through the measurement of time dependent asymmetry in the decay of B0 (B0 ) J/ Ks. This work lead to the Nobel Prize for Cabibbo, Kobayashi and Maskawa in 2008."
Author : Frank Juergen Tackmann
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (34 download)
Download or read book Nonperturbative Effects in Inclusive B-meson Decays written by Frank Juergen Tackmann and published by . This book was released on 2008 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paolo Gandini
Publisher : Springer Science & Business Media
ISBN 13 : 3319010298
Total Pages : 179 pages
Book Rating : 4.3/5 (19 download)
Download or read book Observation of CP Violation in B± → DK± Decays written by Paolo Gandini and published by Springer Science & Business Media. This book was released on 2013-09-05 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: CP violation is a well-established phenomenon in particle physics, but until 2001 it was only observed in kaons. In the last decade, several matter-antimatter asymmetries have been observed in neutral B mesons in line with the expectations of the Standard Model of the weak interaction. Direct CP violation is also expected in the decay rates of charged B+ mesons versus that of B- mesons, though the greatest effects are present in a decay that occurs just twice in 10 million decays. Such rarity requires huge samples to study and this is exactly what the LHC, and its dedicated B-physics experiment LHCb provide. This thesis presents an analysis of the first two years of LHCb data. The author describes the first observation of the rare decay, B- → DK-, D → π-K+ and the first observation of direct CP violation in this B decay. The work constitutes essential information on the experiment’s measurement of a fundamental parameter of the theory and stands as a benchmark against which subsequent analyses of this type will be compared.
Author : Don Lincoln
Publisher : JHU Press
ISBN 13 : 0801896444
Total Pages : 190 pages
Book Rating : 4.8/5 (18 download)
Download or read book The Quantum Frontier written by Don Lincoln and published by JHU Press. This book was released on 2009-03-10 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The highest-energy particle accelerator ever built, the Large Hadron Collider runs under the border between France and Switzerland. It leapt into action on September 10, 2008, amid unprecedented global press coverage and widespread fears that its energy would create tiny black holes that could destroy the earth. By smashing together particles smaller than atoms, the LHC recreates the conditions hypothesized to have existed just moments after the big bang. Physicists expect it to aid our understanding of how the universe came into being and to show us much about the standard model of particle physics—even possibly proving the existence of the mysterious Higgs boson. In exploring what the collider does and what it might find, Don Lincoln explains what the LHC is likely to teach us about particle physics, including uncovering the nature of dark matter, finding micro black holes and supersymmetric particles, identifying extra dimensions, and revealing the origin of mass in the universe. Thousands of physicists from around the globe will have access to the LHC, none of whom really knows what outcomes will be produced by the $7.7 billion project. Whatever it reveals, the results arising from the Large Hadron Collider will profoundly alter our understanding of the cosmos and the atom and stimulate amateur and professional scientists for years to come.
Author : Reem Rasheed
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)
Download or read book Search for New Physics Using Radiative B Meson Decays and Lifetime Measurment of the B Meson with the Belle II Experiment written by Reem Rasheed and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: After the Big Bang matter and antimatter were present in equal amounts. Today, however, everything we see, is made almost entirely of matter. A fundamental ingredient to explain this asymmetry between matter and antimatter is the violation of the CP (Charge Parity) symmetry. CP violation has been observed but quantitatively not enough to explain the huge asymmetry. The Belle II experiment in Japan studies the particles produced in electron-positron collisions at the SuperKEKB collider, the highest intensity collider in the World, allowing a high precision measurements of the known sources of CP violation and looking for new ones. In my PhD, I worked on measuring the CP violation in B meson radiative decays (decays with photon in final state) particularly promising thanks to their high sensitivity to possible new processes. Following this analysis, I started a new measurement of the B mesons lifetime where I could verify the robustness of the tools used in the CP violation measurement.
Author : Shahram Rahatlou
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (898 download)
Download or read book Observation of Matter-Antimatter Asymmetry in the Neutral B Meson System written by Shahram Rahatlou and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Herwig Schopper
Publisher : Springer Nature
ISBN 13 : 3030382079
Total Pages : 632 pages
Book Rating : 4.0/5 (33 download)
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
Author : John Cramer
Publisher : Baen Books
ISBN 13 : 1625799268
Total Pages : 480 pages
Book Rating : 4.6/5 (257 download)
Download or read book Einstein's Bridge written by John Cramer and published by Baen Books. This book was released on 2023-05-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Somewhere in the Multiverse, in a lab distant from the Makers’ Planet, Tunnel Maker, Creator of Bridges, answers an alarm. His inter-universe probe is detecting signals from another bubble universe, indicating that some new high-intelligence alien species is doing high-energy physics and creating hyperdimensional signals. Tunnel Maker knows that, in another bubble universe, the predatory Hive Mind should be receiving the same signals. It is time to make a Bridge . . . George Griffin, experimental physicist working at the newly-operational Superconducting Super Collider (SSC), observes a proton-proton collision that doesn’t make sense. He chases it down and discovers a Bridgehead, a wormhole link to the Makers’ universe. With help from theorist Roger Coulton and writer Alice Lancaster, he establishes communication with the Makers, only to learn that a Hive invasion of Earth is imminent. As the Hive invasion is destroying humanity, by wormhole the Makers transport George and Roger back to 1987, where they must undertake the task of manipulating the Reagan, Bush, and Clinton administrations to change the future and prevent construction of the SSC. At the publisher's request, this title is sold without DRM (Digital Rights Management).
Author : Konrad Kleinknecht
Publisher : Springer
ISBN 13 : 9783662145982
Total Pages : 144 pages
Book Rating : 4.1/5 (459 download)
Download or read book Uncovering CP Violation written by Konrad Kleinknecht and published by Springer. This book was released on 2014-03-12 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Description of experiments that uncovered the nature of CP violation and the phenomenology describing CP violation. The author Konrad Kleinknecht received the Leibniz award of the Deutsche Forschungsgemeinschaft 1990 and the Gentner-Kastler prize and medal of SFP and DPG 2001.
