Measurements Of Cp Violating Asymmetries In Neutral B Meson Decays Into Three Kaons
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Measurements Of Cp Violating Asymmetries In Neutral B Meson Decays Into Three Kaons
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Author : Joshua M. Thompson
language : en
Publisher:
Release Date : 2008
Measurements Of Cp Violating Asymmetries In Neutral B Meson Decays Into Three Kaons written by Joshua M. Thompson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Measurement Of Cp Violating Asymmetries In Neutral B Meson Decays Into Three Kaons
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Author :
language : en
Publisher:
Release Date : 2008
Measurement Of Cp Violating Asymmetries In Neutral B Meson Decays Into Three Kaons written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The Standard Model (SM) of particle physics successfully describes all of the observed interactions of the fundamental particles (with the exception of non-zero neutrino mass). Despite this enormous success, the SM is widely viewed as an incomplete theory. For example, the size of the asymmetry between matter and antimatter is not nearly large enough to account for the abundance of matter observed throughout the universe. It is thus believed that as-yet-unknown physical phenomena must exist that introduce new asymmetries between matter and antimatter. In this thesis, by studying decays that happen only rarely in the SM, we make measurements of asymmetries between matter and antimatter that are potentially sensitive to the existence of processes beyond the SM. At the PEP-II asymmetric-energy B Factory at SLAC, electrons and positrons are collided at the [Upsilon](4S) resonance to create pairs of B mesons. The BABAR detector is used to measure the subsequent decay products. Using 383 million [Upsilon](4S) 2!B$\bar{B}$ decays, we study the decay B0 2!K+K-K0. In the SM, this decay is dominated by loop amplitudes. Asymmetries between matter and antimatter (CP asymmetries) are extracted by measuring the time-dependence of the complex amplitudes describing the B0 and $\bar{B}$0 decays as functions of their kinematics. The interference between decays with and without the mixing of neutral B mesons allows for the measurement of the angle [beta]eff, which is a measure of CP violation. We also measure the direct CP asymmetry ACP. Data samples reconstructed from three K0 modes (KS0 2![pi]+[pi]-, KS0 2![pi]0[pi]0, and KL0) are fit simultaneously. They find ACP = -0.015 ± 0.077 ± 0.053 and [beta]eff = 0.352 ± 0.076 ± 0.026 rad, corresponding to a CP violation significance of 4.8[sigma]. A second solution near [pi]/2-[beta]eff is disfavored with a significance of 4.5[sigma]. In a subsequent fit to the region with mK+K-> 1.1 GeV/c2, they find ACP = -0.054 ± 0.102 ± 0.060 and [beta]eff = 0.436 ± 0.087-0.031+0.055 rad, excluding the possibility that [beta]eff = 0 at 5.1[sigma]. They use the data with msub K+K-
Dalitz Plot Analysis Of Neutral B Meson Decays To Charged Kaon Charged Pion And Neutral Pion Final States
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Author : Zhitang Yu
language : en
Publisher:
Release Date : 2005
Dalitz Plot Analysis Of Neutral B Meson Decays To Charged Kaon Charged Pion And Neutral Pion Final States written by Zhitang Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
94 Electroweak Interactions And Unified Theories
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Author : J. Thanh Van Tran
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1994
94 Electroweak Interactions And Unified Theories written by J. Thanh Van Tran and has been published by Atlantica Séguier Frontières this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Electromagnetic interactions categories.
High Energy Physics Ichep 2000 Proceedings Of The 30th International Conference In 2 Volumes
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Author : Chong-sa Lim
language : en
Publisher: World Scientific
Release Date : 2001-04-30
High Energy Physics Ichep 2000 Proceedings Of The 30th International Conference In 2 Volumes written by Chong-sa Lim and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-04-30 with Science categories.
This book presents topics of major interest to the high energy physics community, as well as recent research results.
Time Dependent Cp Violation Measurements
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Author : Markus Röhrken
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-10-17
Time Dependent Cp Violation Measurements written by Markus Röhrken and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-17 with Science categories.
This thesis describes a high-quality, high-precision method for the data analysis of an interesting elementary particle reaction. The data was collected at the Japanese B-meson factory KEKB with the Belle detector, one of the most successful large-scale experiments worldwide. CP violation is a subtle quantum effect that makes the world look different when simultaneously left and right and matter and antimatter are exchanged. This being a prerequisite for our own world to have developed from the big bang, there are only a few experimental indications of such effects, and their detection requires very intricate techniques. The discovery of CP violation in B meson decays garnered Kobayashi and Maskawa, who had predicted these findings as early as 1973, the 2008 Nobel prize in physics. This thesis describes in great detail what are by far the best measurements of branching ratios and CP violation parameters in two special reactions with two charm mesons in the final state. It presents an in-depth but accessible overview of the theory, phenomenology, experimental setup, data collection, Monte Carlo simulations, (blind) statistical data analysis, and systematic uncertainty studies.
Particle Physics On The Eve Of Lhc Proceedings Of The 13th Lomonosov Conference On Elementary Particle Physics
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Author : Alexander I. Studenikin
language : en
Publisher: World Scientific
Release Date : 2009-01-05
Particle Physics On The Eve Of Lhc Proceedings Of The 13th Lomonosov Conference On Elementary Particle Physics written by Alexander I. Studenikin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-01-05 with Science categories.
This proceedings volume is devoted to a wide variety of items, both in theory and experiment, of particle physics such as tests of the Standard Model and beyond, physics at the future accelerators, neutrino and astroparticle physics, heavy quark physics, non-perturbative QCD, quantum gravity effects and cosmology. It is important that the papers in this volume reveal the present status and new developments in the above-mentioned items on the eve of a new era that starts with the Large Hadron Collider (LHC).
The Measurement Of Cp Asymmetries And Branching Fractions In Neutral B Meson Decays To Charged Rhos And Pions Kaons With The Babar Detector
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Author : Ran Liu
language : en
Publisher:
Release Date : 2004
The Measurement Of Cp Asymmetries And Branching Fractions In Neutral B Meson Decays To Charged Rhos And Pions Kaons With The Babar Detector written by Ran Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Particles Strings And Cosmology
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Author : Kiwoon Choi
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-12-12
Particles Strings And Cosmology written by Kiwoon Choi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-12-12 with Science categories.
PASCOS is an interdisciplinary symposium on the interface of of Particle physics, String theory and Cosmology. Over the past two decades these three disciplines have increasingly become closer. Historically there was always a strong overlap between particle physics and cosmology. This connection has become even stronger with the realization that some of the fundamental issues in cosmology such as the presence of dark matter and dark energy may possibly find a resolution only via new theories of particle physics. At the same time string theory has begun to play an increasingly important role in particle physics as a possible framework for building unified models of particle interaction including gravity. In recent years we have seen an increasing overlap between cosmology and string theory and currently the area of string cosmology is one of the most active fields of research. PASCOS 2005 aimed to provide coherent discussions of recent developments on the interface of the three disciplines and also on their interconnections. In particular, superstring aspects in low energy particle theory (SUSY) and cosmological applications (moduli stabilization) are extensively covered in this volume. Topics include dark matter and dark energy, baryogenesis, flavor and CP violation, neutrino physics, supersymmetry and extra dimensions, flux compactification, string model building, as well as brane cosmology.
Lepton And Photon Interactions At High Energies Lepton Photon 2003 Proceedings Of The Xxi International Symposium
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Author : Harry W K Cheung
language : en
Publisher: World Scientific
Release Date : 2004-02-20
Lepton And Photon Interactions At High Energies Lepton Photon 2003 Proceedings Of The Xxi International Symposium written by Harry W K Cheung and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-02-20 with Science categories.
This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences