Download or read book Charmless Hadronic B Decays at BaBar written by and published by . This book was released on 2007 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Results in Charmless Hadronic B Decays With BaBar written by and published by . This book was released on 2014 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Body Charmless Hadronic B Decays at BaBar written by and published by . This book was released on 2013 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Charmless Hadronic B Decays at BaBar written by and published by . This book was released on 2013 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Charmless Hadronic B Decays at Belle and BaBar written by and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: I report on recent measurements from the Belle and BABAR collaborations on the decay of the B meson to hadronic final states without a charm quark. The study of the branching fractions and angular distributions of B meson decays to hadronic final states without a charm quark probes the dynamics of both the weak and strong interactions, and plays an important role in understanding CP Violation (CPV) in the quark sector. CP Violation at the B factories is described graphically by a triangle with sides formed from the CKM matrix elements V{sub qd}V*{sub qb} (q = u, c, t) and internal angles [alpha], [beta] [gamma] (or [phi]2, [phi]1, [phi]3). Discrepancies in the measured values of the sides and angles could be an indication of New Physics beyond the Standard Model (SM) due to enhanced branching fractions or modified CP asymmetries. The experimental measurements of branching fractions, CP asymmetries, polarization and phases (both weak and strong) can be compared to theoretical models based on, for example, QCD factorization, SU(3) symmetry and Lattice QCD.
Download or read book Direct CP Violatio in Charmless Hadronic B meson Decays at the PEP II Asymmetric B meson Factory written by Alexandre Valerievich Telnov and published by . This book was released on 2003 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Charmless Hadronic B Decays Branching Fractions at BaBar written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary measurements of the branching fractions for charmless hadronic decays of B mesons into two-body final states with kaons, pions and a[phi] resonance. The measurements are based on a data sample of approximately 23 million B[bar B] pairs collected by the BaBar detector at the PEP-II asymmetric B Factory at SLAC.
Download or read book A Study of the Rare Charmless Hadronic B Decay B u2192 A0 0 Using the BaBar Detector written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper limit has been extracted, at the 90% C.L, for the rare charmless hadronic B meson decay B ± → a0(980)±?0, where a0(980)± →??± and ?????????? or ???????? ?+?-?0. The analysis was based on a sample of approximately 340.7 fb-1 of data taken at the (4S) resonance with the BABAR detector at the PEP-II e+e- collider at SLAC from May 1999 to August 2006. The sample contains (379.9 ± 4.2) million B$ar{B}$ pairs.
Download or read book Charmless Hadronic B Decays Into Vector Axial Vector and Tensor Final States at BaBar written by and published by . This book was released on 2012 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present experimental measurements of branching fraction and longitudinal polarization fraction in charmless hadronic B decays into vector, axial vector and tensor final states with the final dataset of BABAR. Measurements of such kind of decays are a powerful tool both to test the Standard Model and search possible sources of new physics. In this document we present a short review of the last experimental results at BABAR concerning charmless quasi two-body decays in final states containing particles with spin 1 or spin 2 and different parities. This kind of decays has received considerable theoretical interest in the last few years and this particular attention has led to interesting experimental results at the current b-factories. In fact, the study of longitudinal polarization fraction f{sub L} in charmless B decays to vector vector (VV), vector axial-vector (VA) and axial-vector axial-vector (AA) mesons provides information on the underlying helicity structure of the decay mechanism. Naive helicity conservation arguments predict a dominant longitudinal polarization fraction f{sub L} ≈ 1 for both tree and penguin dominated decays and this pattern seems to be confirmed by tree-dominated B →?? and B →??+ decays. Other penguin dominated decays, instead, show a different behavior: the measured value of f{sub L} ≈ 0.5 in B →?K* decays is in contrast with naive Standard Model (SM) calculations. Several solutions have been proposed such as the introduction of non-factorizable terms and penguin-annihilation amplitudes, while other explanations invoke new physics. New modes have been investigated to shed more light on the problem.
Download or read book Two and Three Body Charmless B Decays at BaBar written by and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report recent measurements of rare charmless B decays performed by BaBar. The results are based on the final BaBar dataset of 424 fb−1 collected at the PEP-II B-factory based at the SLAC National Accelerator Laboratory. The study of rare B decays is a key ingredient to meet two of the main goals of the B-factories: assessing the validity of the Cabibbo-Kobayashi-Maskawa (CKM) picture of CP-violation by precisely measuring the elements of the Unitarity Triangle (UT), and searching for hints of New Physics (NP), or otherwise constraining NP scenarios, in processes which are suppressed in the Standard Model (SM). In loop processes, in particular, NP at some higher energy scale may manifest itself in the low energy effective theory as new couplings, such as those introduced by new very massive virtual particles in the loop. In NP searches hadronic uncertainties can play a major role, expecially for branching fraction measurements. Many theoretical uncertainties cancel in ratios of amplitudes, and most NP probes are therefore of this kind. In the following sections we report recent measurements, performed by the BaBar Collaboration, that are relevant to NP searches in charmless hadronic B decays.
Download or read book A Study of the Rare Charmless Hadronic B Decay B rightwards Arrow A rtlch ltrch 486 Using the BaBar Detector written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of CP Violation in Charmless Three Body b Hadron Decays written by Daniel O'Hanlon and published by Springer. This book was released on 2018-11-02 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights two essential analyses of data collected during the LHCb experiment, based on the Large Hadron Collider at CERN. The first comprises the first observation and studies of matter-antimatter asymmetries in two three-body b-baryon decays, paving the way for more precise measurements of the relatively unknown decay properties of b-baryon decays. The second is an analysis of a charged B meson decay to three charged pions, where previously large matter-antimatter asymmetries were observed in a model-independent analysis. Here a model of the decay amplitude is constructed using the unitarity-conserving ‘K-matrix’ model for the scalar contributions, so as to gain an understanding of how the previously observed matter-antimatter asymmetries arise; further, the model’s construction yields the most precise and comprehensive study of this decay mode to date.
Download or read book B Physics And Cp Violation Bcp4 Proceedings Of The International Workshop written by T Ohshima and published by World Scientific. This book was released on 2001-09-25 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers the first strong evidence of the existence of CP violation in neutral B decays extracted from sophisticated B factories in the US and Japan. It also holds out the expectation of rare B decays and D, K physics in the near future. In addition, new physics beyond the Standard Model is described. Both experimental and theoretical points of view are given.
Download or read book A Study of the Rare Charmless Hadronic B Decay B 2 a0 pi 0 Using the BaBar Detector written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper limit has been extracted, at the 90% C.L, for the rare charmless hadronic B meson decay B ± → a0(980)±[pi]0, where a0(980)± →[eta][pi]± and [eta]→[gamma][gamma] or [eta]→ [pi]+[pi]-[pi]0. The analysis was based on a sample of approximately 340.7 fb-1 of data taken at the (4S) resonance with the BABAR detector at the PEP-II e+e- collider at SLAC from May 1999 to August 2006. The sample contains (379.9 ± 4.2) million B$\bar{B}$ pairs.
Download or read book Measurements of Charmless Three Body and Quasi Two Body B Decays written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of a search for several exclusive charmless hadronic B decays from electron-positron annihilation data collected by the BaBar detector near the Upsilon(4S) resonance. These include three-body decay modes with final states h"h{sup minus-plus}h" and h"h{sup minus-plus}pi°, and quasi-two-body decay modes with final states X°h and X°K{sub S}°, where h = pi or K and X° = eta-prime or omega. They find beta(B° --> rho{sup minus-plus}pi{sup "}) = (49"135{sup +6}) x 10−6 and beta(B --> eta-prime-K+) = (62"18{+-}8) x 10−6 and present upper limits for right other decays.
Download or read book A Study of the Rare Charmless Hadronic B Decay B rightwards Arrow A rtlch ltrch u00BA Using the BaBar Detector written by William Panduro Vazquez and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
