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Measurement Of Branching Fraction And Direct Cp Asymmetry In B0 K0 0 Decay At Belle Ii And First Study Of Two Particle Correlations At Belle
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Book Synopsis Measurement of Branching Fraction and Direct CP Asymmetry in B0 K0 Π0 Decay at Belle Ii and First Study of Two-particle Correlations at Belle by : 陳昱蓁
Download or read book Measurement of Branching Fraction and Direct CP Asymmetry in B0 K0 Π0 Decay at Belle Ii and First Study of Two-particle Correlations at Belle written by 陳昱蓁 and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Physics of the B Factories by : Adrian Bevan
Download or read book The Physics of the B Factories written by Adrian Bevan and published by Springer. This book was released on 2015-03-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive work thoroughly introduces and reviews the set of results from Belle and BaBar - after more than two decades of independent and complementary work - all the way from the detectors and the analysis tools used, up to the physics results, and the interpretation of these results. The world’s two giant B Factory collaborations, Belle at KEK and BaBar at SLAC, have successfully completed their main mission to discover and quantify CP violation in the decays of B mesons. CP violation is a necessary requirement to distinguish unambiguously between matter and antimatter. The shared primary objective of the two B Factory experiments was to determine the shape of the so-called unitarity triangle, an abstract triangle representing interactions of quarks, the elementary constituents of matter. The area of the triangle is a measure of the amount of CP violation associated with the weak force. Many other measurements have been performed by the B Factories and are also discussed in this work.
Book Synopsis Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0→ D*-D*+K0s Decays at the Belle Experiment by : Martin Ritter
Download or read book Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0→ D*-D*+K0s Decays at the Belle Experiment written by Martin Ritter and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Branching Fractions and CP-Violating Asymmetries in B-Meson Decays to the Charmless Two-Body States K[sup 0]pi+, K-bar[sup 0]K[sup +], and K[sup 0]K-bar[sup 0]. by :
Download or read book Measurements of Branching Fractions and CP-Violating Asymmetries in B-Meson Decays to the Charmless Two-Body States K[sup 0]pi+, K-bar[sup 0]K[sup +], and K[sup 0]K-bar[sup 0]. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary measurements of the branching fraction and the CP-violating charge asymmetry in the B[sup +] --> K[sup 0][pi][sup +] decay, and a preliminary measurement of the branching fraction of the B[sup 0] --> K[sup 0][bar K][sup 0] decay. No evidence of direct CP violation in the B[sup +] --> K[sup 0][pi][sup +] mode is observed. The B[sup 0] --> K[sup 0][bar K][sup 0] measurement constitutes the first observation of this decay channel: the probability of obtaining the result assuming the null-signal hypothesis is 3.4 x 10[sup -6]. The authors have also searched for the B[sup +] --> [bar K][sup 0]K[sup +] decay and set an upper limit on its branching fraction at 2.35 x 10[sup -6] at the 90% C.L. The branching-fraction measurements reported here are consistent with previous measurements of the same quantities, but are extracted from a data sample larger by a factor of 2.6.
Book Synopsis Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0 - D[Stern]s Decays at the Belle Experiment by : Martin Ritter
Download or read book Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0 - D[Stern]s Decays at the Belle Experiment written by Martin Ritter and published by . This book was released on 2013 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Branching Fraction Ratios and CP-asymmetries in Suppressed B-2!D(2!K+[pi]- )K- and B-2!D(2!K+[pi]- )[pi]- Decays by :
Download or read book Measurements of Branching Fraction Ratios and CP-asymmetries in Suppressed B-2!D(2!K+[pi]- )K- and B-2!D(2!K+[pi]- )[pi]- Decays written by and published by . This book was released on 2011 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the first reconstruction in hadron collisions of the suppressed decays B-2!D(2!K+[pi]- )K- and B-2!D(2!K+[pi]- )[pi]- decays, sensitive to the CKM phase [gamma], using data from 7 fb-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B-2!D(2!K+[pi]- )K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 " 8.6(stat) " 2.6(syst)] x 10-3, R+(K) = [42.6 " 13.7(stat) " 2.8(syst)] x 10-3, R-(K) = [3.8 " 10.3(stat) " 2.7(syst)] x 10-3 as well as the direct CP-violating asymmetry A(K) = -0.82"0.44(stat)"0.09(syst) of this mode. Corresponding quantities for B- 2!D(2!K+[pi]- )[pi]- decay are also reported.
Book Synopsis Branching Fraction And Direct CP Violating Asymmetries in Charmless Twobody B Decays at BaBar by : W. D. Hulsbergen
Download or read book Branching Fraction And Direct CP Violating Asymmetries in Charmless Twobody B Decays at BaBar written by W. D. Hulsbergen and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary measurements of branching fractions and direct CP violating asymmetries in charmless two-body B decays, obtained with the BABAR detector using a sample of 227M {Upsilon}(4S) {yields} B{bar B} decays. We report the first observation of B{sup 0} {yields} K{sup 0}{bar K}{sup 0} and the first observation of direct CP violation in B{sup 0} {yields} K{sup +}{pi}{sup -} decays.
Book Synopsis Measurement of the Branching Fraction And Search for Direct CP-Violation in the B+- --] J/Psi Pi+- Decay Mode at BaBar by : Francesco Fobozzi
Download or read book Measurement of the Branching Fraction And Search for Direct CP-Violation in the B+- --] J/Psi Pi+- Decay Mode at BaBar written by Francesco Fobozzi and published by . This book was released on 2006 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenon of CP-violation in weak interactions, discovered in 1964 in decays of neutral kaons, receives a simple and elegant explanation in the Standard Model with three generations of quarks. Indeed, in this model the common source of CP-asymmetry phenomena is represented by a simple complex phase in the unitary matrix (the Cabibbo-Kobayashi-Maskawa matrix) describing the charged weak couplings of the quarks. This simple scheme has never received an accurate validation, because the phenomenological parameters determined from measurements of CP-violation in kaons decays are related to the fundamental parameters of the theory in a complex way, sensitive to large theoretical uncertainties. On the contrary, decays of neutral B mesons like B{sup 0} {yields} J/{psi} K{sub S}{sup 0} represent a unique laboratory to test the predictions of the theory because they are expected to show significant CP-violation effects, the magnitude of which is cleanly related to the Standard Model parameters. Thus experimental facilities have been built with the purpose of performing extensive studies of B decays. The BABAR experiment is operating at one of these facilities, at the Stanford Linear Accelerator Center. It is collecting data at the PEP-II asymmetric e{sup +}e{sup -} collider (E{sub e{sup -}} = 9.0 GeV; E{sub e{sup +}} = 3.1 GeV), a high-luminosity accelerator machine (L = 3 x 10{sup 33} cm{sup -2}s{sup -1}). The center-of-mass energy (10.58 GeV) of the e{sup +}e{sup -} system at PEP-II allows resonant production of the {Upsilon}(4S), a b{bar b} bound state, which decays almost exclusively in a B{sup 0}{bar B}{sup 0} or a B{sup +}B{sup -} pair. A high-acceptance detector, projected and built by a wide international collaboration, detects and characterizes the decay products of the B mesons. From the analysis of the data collected during the first two years of operation, the BABAR collaboration has established CP-violation in decays of neutral B mesons at the 4.1{sigma} level. Besides the primary goal of CP-violation studies, the high luminosity of PEP-II, coupled with the high acceptance of the BABAR detector, allows competitive studies of the properties of a wide set of B decay modes. In particular, measurements of non-leptonic decays are extremely useful to understand the dynamics of the non-perturbative strong interactions involved in these processes. In this thesis a study of the non-leptonic decay mode B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} is presented.
Book Synopsis Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0→ D*-D*+K0s Decays at the Belle Experiment by : Martin Ritter
Download or read book Measurement of the Branching Fraction and Time Dependent CP Asymmetry in B0→ D*-D*+K0s Decays at the Belle Experiment written by Martin Ritter and published by . This book was released on 2014 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Branching Fraction and Time-Dependent CP Asymmetry in the Decay B0 to D*+D*-Ks by :
Download or read book Measurement of the Branching Fraction and Time-Dependent CP Asymmetry in the Decay B0 to D*+D*-Ks written by and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the decay B° 2!D*D*− K{sub S}° using (230 ± 2) x 106 B{bar B} pairs collected by the BABAR detector at the PEP-II B factory. They measure a branching fraction [Beta](B° 2!D*D*− K{sub S}°) = (4.4 ± 0.4 ± 0.7) x 10−3 and find evidence for the decay B° 2!D*− D{sub s1}+(2536) with a statistical significance of 4.6 [sigma]. A time-dependent CP asymmetry analysis is also performed to study the possible resonant contributions to B° 2!D*+D*− K{sub S}° and the sign of cos2[beta]. Their measurement indicates that there is a sizable resonant contribution to the decay B° 2!D*+ D*− K{sub S}° from a unknown D{sub s1}+ state with large width, and that cos2[beta] is positive at the 94% confidence level under certain theoretical assumptions.
Book Synopsis Measurement of the Branching Fraction of the Decay B 0 → Ψ(2S)π 0 [psi(2S)pi 0] and Studies of the Luminosity-dependent Background for the Belle II Experiment at the Future Accelerator SuperKEKB by : Elena Nedelkovska
Download or read book Measurement of the Branching Fraction of the Decay B 0 → Ψ(2S)π 0 [psi(2S)pi 0] and Studies of the Luminosity-dependent Background for the Belle II Experiment at the Future Accelerator SuperKEKB written by Elena Nedelkovska and published by . This book was released on 2013 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Branching Fractions and CP Asymmetries in Two-body Nonleptonic Charmless B-hadron Decays by : Andreas Warburton
Download or read book Branching Fractions and CP Asymmetries in Two-body Nonleptonic Charmless B-hadron Decays written by Andreas Warburton and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative branching fractions of B{sub d, s}{sup 0} {yields} h{sup +}h'{sup -} decays (where h, h' = K or {pi}) and the direct Cp asymmetry A{sub CP} in the B{sub d}{sup 0} {yields} K{sup +}{pi}{sup -} mode are measured with 179 {+-} 11 pb {sup -1} of data collected using the CDF II detector at the Fermilab Tevatron p{bar p} collider. The first branching-fraction measurement of a B{sub s}{sup 0} meson to two pseudoscalars, {Beta}(B{sub s}{sup 0} {yields} K{sup +} K{sup -}), and a search for the baryon mode {Lambda}{sub b}{sup 0} {yields} p{sup +} h{sup -} are also presented, in addition to branching-fraction limits on the rare channels B{sub s}{sup 0} {yields} K{sup +} {pi}{sup -}, B{sub d}{sup 0} {yields} K{sup +}K{sup -}, and B{sub s}{sup 0} {yields} {pi}{sup +}{pi}{sup -}.
Book Synopsis Measurements of the Branching Fraction and CP-Violation Asymmetries in B0-]f0(980)Ks by :
Download or read book Measurements of the Branching Fraction and CP-Violation Asymmetries in B0-]f0(980)Ks written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the branching fraction and CP-violating asymmetries in the decay B[sup 0] [yields] f[sub 0](980)K[sub S][sup 0]. The results are obtained from a data sample of 123 x 10[sup 6] [Upsilon](4S) [yields] B[bar B] decays. From a time-dependent maximum likelihood fit they measure the branching fraction [Beta](B[sup 0] [yields] f[sub 0](980)([yields][Pi][sup +][pi][sup 0])K[sup 0]) = (6.0 [+-] 0.9 [+-] 0.6 [+-] 1.2) x 10[sup -6], the mixing-induced CP violation parameter S = 1.62[sub -0.51][sup +0.56] [+-] 0.09 [+-] 0.04 and the direct CP violation parameter C = 0.27 [+-] 0.36 [+-] 0.10 [+-] 0.07, where the first errors are statistical, the second systematic and the third due to model uncertainties. They measure the f[sub 0](980) mass and width to be m[sub f[sub 0(980)]] = (980.6 [+-] 4.1 [+-] 0.5 [+-] 4.0) MeV/c[sup 2] and [Lambda][sub f[sub 0(980)]] = (43[sub -9][sup +12] [+-] 3 [+-] 9) MeV/c[sup 2], respectively.
Book Synopsis Notre petite ferme et ses revenus by :
Download or read book Notre petite ferme et ses revenus written by and published by . This book was released on 1864 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Branching Fraction, Polarization, and Direct CP-Violating Asymmetry in B[sup +] --] K*[sup 0] [rho][sup +] Decays by :
Download or read book Measurements of Branching Fraction, Polarization, and Direct CP-Violating Asymmetry in B[sup +] --] K*[sup 0] [rho][sup +] Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this analysis is the simultaneous measurement of the branching fraction, the longitudinal-polarization component, and the direct-CP-violating charge asymmetry for the B --> vector-vector decay mode B[sup +] --> K*[sup 0][rho][sup +], which has previously not been seen experimentally. The measurement of the polarization of the penguin decay is of special interest. There is no tree contribution to the decay amplitude and only a very small annihilation process. The polarization of the B[sup +] --> K*[sup 0][rho][sup +] decay mode can be compared to that already measured for the similar penguin decay B --> K*[phi].
Book Synopsis Measurements of Branching Fractions and CP-Violating Asymmetries in B-Meson Decays to the Charmless Two-Body States K°pi+, K-bar°K, and K°K-bar° by :
Download or read book Measurements of Branching Fractions and CP-Violating Asymmetries in B-Meson Decays to the Charmless Two-Body States K°pi+, K-bar°K, and K°K-bar° written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary measurements of the branching fraction and the CP-violating charge asymmetry in the B --> K°?+ decay, and a preliminary measurement of the branching fraction of the B° --> K°{bar K}° decay. No evidence of direct CP violation in the B+ --> K°?+ mode is observed. The B° --> K°{bar K}° measurement constitutes the first observation of this decay channel: the probability of obtaining the result assuming the null-signal hypothesis is 3.4 x 10−6. The authors have also searched for the B+ --> {bar K}°K+ decay and set an upper limit on its branching fraction at 2.35 x 10−6 at the 90% C.L. The branching-fraction measurements reported here are consistent with previous measurements of the same quantities, but are extracted from a data sample larger by a factor of 2.6.
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