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Book Scalar Mesons in Phi Radiative Decay

Download or read book Scalar Mesons in Phi Radiative Decay written by and published by . This book was released on 1993 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing predictions for the branching ratio for phi -> KK(sub)gamma ma phi -> S(sub)gamma (where S denotes one of the scalar mesons f(sub)0(975) and alpha(sub)0(980)) vary by several orders of magnitude. As a byproduct we find that the branching ratio for phi -> K^0K^0(sub)gamma is

Book The DA PHI NE Physics Handbook

Download or read book The DA PHI NE Physics Handbook written by Luciano Maiani and published by . This book was released on 1992 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book CP Violation

Download or read book CP Violation written by Yoshitaka Kuno and published by . This book was released on 1994 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Time Dependent CP Violation Measurements

Download or read book Time Dependent CP Violation Measurements written by Markus Röhrken and published by Springer Science & Business Media. This book was released on 2013-10-17 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Study of CP Violation in Dalitz Plot Analyses of B Meson Decays to Three Kaons

Download or read book Study of CP Violation in Dalitz Plot Analyses of B Meson Decays to Three Kaons written by and published by . This book was released on 2012 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Model (SM) explains CP violation in terms of the CKM matrix. The BABAR experiment was designed mainly to test the CKM model in B decays. B decays that proceed through b → s loop diagrams, of which B → KKK decays are an example, are sensitive to new physics effects that could lead to deviations from the CKM predictions for CP violation. We present studies of CP violation in the decays B+ → K+K-K+, B+ → KS0KS0K+, and B0 → K+K-KS0, using a Dalitz plot amplitude analysis. These studies are based on approximately 470 million B$\bar{B}$ decays collected by BABAR at the PEP-II collider at SLAC. We perform measurements of time-dependent CP violation in B0 → K+K-KS0, including B0 → [Phi]KS0. We measure a CP-violating phase [beta]eff ([Phi]KS0) = 0.36 ± 0.11 ± 0.04 rad., in agreement with the SM. This is the world's most precise measurement of this quantity. We also measure direct CP asymmetries in all three decay modes, including the direct CP asymmetry ACP ([Phi]K+) = (12.8 ± 4.4 ± 1.3)%, which is 2.8 sigma away from zero. This measurement is in tension with the SM, which predicts an asymmetry of a few percent. We also study the resonant and nonresonant features in the B → KKK Dalitz plots. We find that the hypothetical scalar fX(1500) resonance, introduced by prior analyses to explain an unknown peak in the mKK spectrum, cannot adequately describe the data. We conclude instead that the fX(1500) can be explained as the sum of the f0(1500), f'2(1525), and f0(1710) resonances, removing the need for the hypothetical fX(1500). We also find that an exponential nonresonant model, used by previous analyses to describe the broad nonresonant feature seen in B → KKK decays, cannot fully model the data. We introduce a new nonresonant model that contains more free parameters, allows for phase motion, and contains both S-wave and P-wave components.

Book CP Violation

    Book Details:
  • Author : I. I. Bigi
  • Publisher : Cambridge University Press
  • Release : 2009-04-30
  • ISBN : 1139478249
  • Pages : 1 pages

Download or read book CP Violation written by I. I. Bigi and published by Cambridge University Press. This book was released on 2009-04-30 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why didn't the matter in our Universe annihilate with antimatter immediately after its creation? The study of CP violation may help to answer this fundamental question. This book presents theoretical tools necessary to understand this phenomenon. Reflecting the explosion of new results over the last decade, this second edition has been substantially expanded. It introduces charge conjugation, parity and time reversal, before describing the Kobayashi-Maskawa (KM) theory for CP violation and our understanding of CP violation in kaon decays. It reveals how the discovery of B mesons has provided a new laboratory to study CP violation with KM theory predicting large asymmetries, and discusses how these predictions have been confirmed since the first edition of this book. Later chapters describe the search for a new theory of nature's fundamental dynamics. This book is suitable for researchers in high energy, atomic and nuclear physics, and the history and philosophy of science.

Book CP Violation in the Hadronic Ks Meson Decays

Download or read book CP Violation in the Hadronic Ks Meson Decays written by Michał Silarski and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete symmetries as parity P, charge conjugation C and time reversal T, as well as their combinations such as CP and CPT play a fundamental role in particle physics. The CP symmetry violation was discovered unexpectedly in 1964 during the regeneration studies of the neutral K mesons, and result in a far-reaching consequences. In the framework of the Standard Model it implies the existence of the third generation of quarks. Moreover, it is a very important mechanism which could have an essential contribution to the asymmetry between matter and antimatter in the Universe. Parameters describing CP violation in neutral kaon decays were measured with a good precision and at present the main experimental effort is focused on studies of the neutral B and D meson systems. However, there are still several interesting open issues in the kaon physics, like rare Ks meson decays. This work is focused on the measurement of the rare CP violating Ks 3 0 decay branching ratio based on the data sample gathered with the KLOE detector operating at the -factory DA NE in the Italian National Center for Nuclear Physics in Frascati.

Book Study of Scalar Mesons and Related Radiative Decays

Download or read book Study of Scalar Mesons and Related Radiative Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: After a brief review of the puzzling light scalar meson sector of QCD, a brief summary will be given of a paper concerning radiative decays involving the light scalars. There, a simple vector meson dominance model is constructed in an initial attempt to relate a large number of the radiative decays involving a putative scalar nonet to each other. As an application it is illustrated why a[sub 0](980)-f[sub 0](980) mixing is not expected to greatly alter the f[sub 0]/a[sub 0] production ratio for radiative[phi] decays.

Book Soviet Journal of Nuclear Physics

Download or read book Soviet Journal of Nuclear Physics written by and published by . This book was released on 1992 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Chemical Abstracts

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Measurements of CP violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector

Download or read book Measurements of CP violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector written by Morris Nicholas Danielson and published by . This book was released on 2005 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Study of CP Violation in Dalitz plot Analyses of B Meson Decays to Three Kaons

Download or read book Study of CP Violation in Dalitz plot Analyses of B Meson Decays to Three Kaons written by Brian Edward Lindquist and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents studies of CP violation in the decays B0--> K+K-Ks, B+--> K+K-K+, and B+--> KsKsK+, using a Dalitz plot amplitude analysis. These studies are based on data from the BaBar experiment at PEP-II at SLAC. Among the significant results are the world's most precise measurements of time-dependent CP-violation in B0--> phi Ks and direct CP violation in B+--> phi K+. The latter is measured to deviate from zero by 2.8 standard deviations, in tension with the Standard Model expectation. We also study the resonant and nonresonant substructure of B--> KKK decays, and find evidence against the previously hypothesized resonance dubbed the "fX(1500)."