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Exploring The Weak Phase Gamma In B Pi K Decays
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Book Synopsis Exploring the Weak Phase Gamma in B+- -] Pi K Decays by :
Download or read book Exploring the Weak Phase Gamma in B+- -] Pi K Decays written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the rates for the hadronic decays B{sup {+-}} 2![pi]K along with the CP-averaged B{sup {+-}} 2![pi]{sup {+-}} [pi]° branching ratio can be used to bound and extract the weak phase [gamma] = arg(V{sub ub}*). Using preliminary CLEO data, we obtain the bounds {vert_bar}[gamma]{vert_bar}> 93° at 1 [sigma], and {vert_bar}[gamma]{vert_bar}> 71° at 90% confidence level.
Book Synopsis Model-independent Information on Gamma from B[sup[+-] --] Pi K Decays by :
Download or read book Model-independent Information on Gamma from B[sup[+-] --] Pi K Decays written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the rates for the hadronic decays B[sup[+-]][yields][pi]K can be used to derive information on the weak phase= arg(V*[sub ub]) in a largely model-independent way. Hadronic uncertainties can be reduced to the level of nonfactorizable contributions to the decay amplitudes that are power-suppressed in[Lambda]/m[sub b] and, in addition, either violate SU(3) flavor symmetry or are doubly Cabibbo suppressed. Various strategies to obtain bounds on and to extract its value with small theoretical uncertainty are described. The potential of B[sup[+-]][yields][pi]K decays for probing physics beyond the Standard Model is also discussed.
Book Synopsis Constraints on Γ [gamma] and Strong Phases from B → ΠK [pi-K] Decays by : Andrzej J. Buras
Download or read book Constraints on Γ [gamma] and Strong Phases from B → ΠK [pi-K] Decays written by Andrzej J. Buras and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Constraints on [gamma] [gamma] and Strong Phases from B -> PK [pi-K] Decays by : Andrzej J. Buras
Download or read book Constraints on [gamma] [gamma] and Strong Phases from B -> PK [pi-K] Decays written by Andrzej J. Buras and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Gamma from B \to K*Pi Decays and Related Modes by :
Download or read book Determination of Gamma from B \to K*Pi Decays and Related Modes written by and published by . This book was released on 2013 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Constraints on [gamma] and Strong Phases from B -> [pi]K Decays by : Andrzej J. Buras
Download or read book Constraints on [gamma] and Strong Phases from B -> [pi]K Decays written by Andrzej J. Buras and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Gamma in B-+ to D(*) K+- Decays with a Dalitz Analysis of D to K0s Pi- Pi by :
Download or read book Measurement of Gamma in B-+ to D(*) K+- Decays with a Dalitz Analysis of D to K0s Pi- Pi written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a measurement of the Cabibbo-Kobayashi-Maskawa CP-violating phase? through a Dalitz analysis of neutral D decays to K{sub s}°?−? in the processes B{sup {-+}} → D{sup (*)} K{sup {-+}}, D* → D?°, D?
Book Synopsis Estimates of the weak annihilation contributions to the decays B → π [pi] + γ [gamma] and B → ω [omega] + γ [gamma] by : A. Ali
Download or read book Estimates of the weak annihilation contributions to the decays B → π [pi] + γ [gamma] and B → ω [omega] + γ [gamma] written by A. Ali and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Constraints on the CKM Angle [gamma] [gamma] and Strong Phases from B -> PK [pi-K] Decays by : Andrzej J. Buras
Download or read book Constraints on the CKM Angle [gamma] [gamma] and Strong Phases from B -> PK [pi-K] Decays written by Andrzej J. Buras and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Gamma in B-+ to D(*) K-+ and B-+ to D K*-+ Decays with a Dalitz Analysis of D to Ks Pi- Pi by : J. C. Chen
Download or read book Measurement of Gamma in B-+ to D(*) K-+ and B-+ to D K*-+ Decays with a Dalitz Analysis of D to Ks Pi- Pi written by J. C. Chen and published by . This book was released on 2005 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the Cabibbo-Kobayashi-Maskawa CP-violating phase {gamma} with a Dalitz plot analysis of neutral D-meson decays to the K{sub S}{sup 0} {pi}{sup -}{pi}{sup +} final state from B{sup {-+}} {yields} D{sup (*)}K{sup {-+}} and B{sup {-+}} {yields} DK*{sup {-+}} decays, using a sample of 227 million B{bar B} pairs collected by the BABAR detector. We measure {gamma} = (67 {+-} 28 {+-} 13 {+-} 11){sup o}, where the first error is statistical, the second is the experimental systematic uncertainty and the third reflects the Dalitz model uncertainty. This result suffers from a two-fold ambiguity. The contribution to the Dalitz model uncertainty due to the description of the {pi}{pi} S-wave in D{sup 0} {yields} K{sub S}{sup 0}{pi}{sup -}{pi}{sup +}, evaluated using a K-matrix formalism, is found to be 3{sup o}.
Book Synopsis Measuring the CP Violating Phase Angle Γ by an Amplitude Analysis of the Decays B[+-] → (K[-+] Pi[+-] Pi- Pi+) D K[+-] by : Callum Lister
Download or read book Measuring the CP Violating Phase Angle Γ by an Amplitude Analysis of the Decays B[+-] → (K[-+] Pi[+-] Pi- Pi+) D K[+-] written by Callum Lister and published by . This book was released on 2010 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time Dependent Dalitz Analysis of B0 -> D- K0 Pi+ Decays for the Measurement of 2beta+gamma with the BaBar Detector by : Francesco Polci
Download or read book Time Dependent Dalitz Analysis of B0 -> D- K0 Pi+ Decays for the Measurement of 2beta+gamma with the BaBar Detector written by Francesco Polci and published by . This book was released on 2007 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CP violation is explained in the Standard Model with three quark generations with an irreducible phase in the Cabibbo-Kobayashi-Maskawa quark mixing matrix. The unitarity of this matrix can be represented in a complex plane as a triangle (called Unitarity Triangle). The measurement of the parameters of the triangle is a powerful test of the Standard Model description of the CP violation. This thesis tries to measure the weak phase 2beta+ gamma through the B0 -> D+ K0 Pi- decays. Respect to the two body decays B0 -> D(*)+ Pi- and B0 -> D+ Rho- presently used for the measurement of the same weak phase, the B0 -> D+ K0 Pi- decays should show up a larger CP asymmetry and does not rely on any theoretical assumption. After a review of all the methods for the measurement of 2beta+gamma, the thesis presents the results of a feasibility study of the measurement with the B0 -> D+ K0 Pi- decays . In a second part, the analysis performed on 316 fb-1 of data collected by the BaBar detector at the B-factory PEP2 is presented, from the selection of the events to the time-dependent Dalitz fit technique used in order to extract the weak phase 2beta+gamma as well as the amplitudes and phases of the intermediate resonances contributing to the decay. The result of the analysis gives the following estimation: 2beta+gamma = 89 +/- 53(stat) +23-14(syst) degrees with an irreducible ambiguity of 180 degrees.
Book Synopsis Electroweak Radiative B-decays as a Test of the Standard Model and Beyond by : Andrey Tayduganov
Download or read book Electroweak Radiative B-decays as a Test of the Standard Model and Beyond written by Andrey Tayduganov and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently the radiative B-decay to strange axial-vector mesons, B--> K1(1270) gamma, was observed with a rather large branching ratio. This process is particularly interesting as the subsequent K1-decay into its three-body final state allows us to determine the polarization of the photon, which is mostly left(right)-handed for Bbar(B) in the Standard Model while various new physics models predict additional right(left)-handed components. In this thesis, a new method is proposed to determine the polarization, exploiting the full Dalitz plot distribution, which seems to reduce significantly the statistical errors on the polarization parameter lambda_gamma measurement.This polarization measurement requires, however a detailed knowledge of the K1--> K pi pi strong interaction decays, namely, the complex pattern of the various partial wave amplitudes into several possible quasi-two-body channels as well as their relative phases. A number of experiments have been done to extract all these information while there remain various problems in the previous studies. In this thesis, we investigate the details of these problems. As a theoretical tool, we use the 3P0 quark-pair-creation model in order to improve our understanding of strong K1 decays.Finally we try to estimate some theoretical uncertainties: in particular, the one coming from the uncertainty on the K1 mixing angle, and the effect of a possible ``off-set'' phase in strong decay S-waves. According to our estimations, the systematic errors are found to be of the order of sigma(lambda_gamma)^th20%. On the other hand, we discuss the sensitivity of the future experiments, namely the SuperB factories and LHCb, to lambda_gamma. Naively estimating the annual signal yields, we found the statistical error of the new method to be sigma(lambda_gamma)^stat10% which turns out to be reduced by a factor 2 with respect to using the simple angular distribution.We also discuss a comparison to the other methods of the polarization measurement using processes, such as B-- K* e^+ e^-, Bd-- K* gamma and Bs--> phi gamma, for the determination of the ratio of the Wilson coefficients C7gamma^'eff/C7gamma^eff. We show an example of the potential constraints on C7gamma^'eff/C7gamma^eff. in several scenarios of supersymmetric models.
Book Synopsis Measurement of the Time-Dependent CP-Violating Asymmetry in $B^0 \to K^{0}_s\pi^0\gamma$ Decays by :
Download or read book Measurement of the Time-Dependent CP-Violating Asymmetry in $B^0 \to K^{0}_s\pi^0\gamma$ Decays written by and published by . This book was released on 2005 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the time-dependent CP-violating asymmetry in B° 2!K*°[gamma] decays with K*° 2!K{sub S}°[pi]° based on 232 million [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy ee− collider at SLAC. In a sample containing 157 ± 16 signal decays, we measure S{sub K*°[gamma]} = -0.21 ± 0.40 ± 0.05 and C{sub K*°[gamma]} = -0.40 ± 0.23 ± 0.03, where the first error is statistical and the second systematic. We also explore B° 2!K{sub S}°[pi]°[gamma] decays with 1.1
Book Synopsis Dalitz Analysis of D0 to K$0\atop{S}$[pi]+[pi]- and Measurement of the CKM Angle [gamma]a in Charged B± Decays to D(*) K± Decays by :
Download or read book Dalitz Analysis of D0 to K$0\atop{S}$[pi]+[pi]- and Measurement of the CKM Angle [gamma]a in Charged B± Decays to D(*) K± Decays written by and published by . This book was released on 2007 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite more than thirty years having elapsed since the discovery of CP violation, our understanding about the source and the nature of this phenomenon is still very limited. In the standard model of particle physics, CP violation is due to the presence of an non-irreducible weak phase in the Cabibbo-Kabayashi-Maskawa(CKM) matrix. Up to now, all the experimental results are in good agreement with the standard model. However, it is important for us to over-constrain the CKM quark-mixing matrix and explore the possibility of new physics beyond the standard model. The B meson provides an ideal place to measure CP violation due to its heavy mass and potentially large CP-violating effects. In particular, the angle [gamma] of the Unitary Triangle relating the elements of the CKM matrix is extremely crucial in terms of CP violation and constraints on the new physics models. Various methods using B- → D0K- decays have been proposed to measure based on the interference between the Vcb and Vub amplitudes. Despite the simple concept, the measurement turns out to be experimentally challenging due to the small branching fraction and the small value of [tau]B, the amplitude ratio between the two contributing Feynman diagrams. In this thesis a novel technique to measure [gamma] in B- → D(*) K- decay using a Dalitz plot analysis of D0 → K{sub s}[pi]+[pi]- is presented. Until the turn on of LHC b [1] later in the decade, this remains the most promising method to measure [gamma]. This thesis is roughly separated into two parts. The first part involves a study of hadron spectroscopy and the Dalitz plot analysis of the D0→ K$0\atop{S}$[pi]+[pi]-. The second part of the thesis involves the measurement of [gamma] in B- → D(*) K- using the results of the D0 → K$0\atop{S}$[pi]+[pi]- dalitz plot analysis.
Book Synopsis What Next? Exploring The Future Of High-energy Physics - Proceedings Of The 16th Annual Montreal-rochester-syracuse-toronto (Mrst) Meeting by : J R Cudell
Download or read book What Next? Exploring The Future Of High-energy Physics - Proceedings Of The 16th Annual Montreal-rochester-syracuse-toronto (Mrst) Meeting written by J R Cudell and published by World Scientific. This book was released on 1994-12-14 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the above meeting which attracted over 100 physicists from the United States, Canada, and Europe. MRST-94 explored a wide variety of current issues ranging from the formal aspects of theoretical high-energy physics (conformal field theory, strings, supersymmetry, black holes, new field-theoretic techniques, non-perturbative methods, and finite-temperature field theory) to the more phenomenological (mass generation, heavy quarks, CP violation, weak decays, neutrino physics, cosmic phenomena, heavy-ion physics, collider physics, and issues surrounding the recent evidence for the top quark). This volume thus provides a broad overview of recent developments in theoretical high-energy physics.
Book Synopsis B Physics And Cp Violation: Bcp4 - Proceedings Of The International Workshop by : T Ohshima
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.
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