Download or read book Measurements of Beta in B Decays to Charm and Charmonium at BaBar written by and published by . This book was released on 2007 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this article we will review recent BABAR measurements of Unitarity Triangle angle [beta] in B meson decays to charm and charmonium.
Download or read book B Decays to Open And Hidden Charm at BaBar written by S. Ricciardi and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wealth of new measurements of hadronic B decays to open charm and charmonium have been performed on the data sample collected by the BaBar experiment at the PEP-II e{sup +}e{sup -} B-factory. We report the first measurement of the rates for inclusive charm production separately for charged and neutral B mesons. Combining measurements of the decay rate of B{sup 0} {yields} D*{sub s}{sup +}D*{sup -} obtained with a partial reconstruction technique and the complete reconstruction of B{sup 0} {yields} D*{sub s}{sup +}D*{sup -} with D{sub s}{sup +} {yields} {phi}{pi}{sup +}, we obtain the most precise measurement of {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}). We present an update of the measurements of the branching fractions of exclusive B decays to J/{psi}, {psi}(2S), {chi}{sub c1}, {chi}{sub c2} and a kaon or a K*. In addition, we show preliminary results on exclusive decay rates to final states with baryons, or newly-discovered particles, such as D*{sub sJ}(2317), D{sub sJ}(2460){sup +}, and the X(3872).
Download or read book B Decays to Charm and Charmonium States in BABAR written by S. Grancagnolo and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent measurements in exclusive hadronic B decays to states with charm are presented, including a review of the B {yields} D{sub sJ}D{sup (*)} decays, and a study of the B{sup -} {yields} J/{psi} K{sup -} {pi}{sup +}{pi}{sup -} decay looking for charmonium resonances. New results are shown on the search of the B{sup 0} {yields} D{sub s}{sup +} {rho}{sup -} and B{sup 0} {yields} J/{psi}{gamma} decays. These analysis are based on the 1999-2003 dataset collected by the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring at the Stanford Linear Accelerator Center.
Download or read book Hadronic B Decays to Charm and Charmonium With the BaBar Experiment written by and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of CP Violation Parameters in B Quark Decays to Charm Anticharm Down Quarks Exclusive Decays at the BABAR Experiment written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B° 2!D*D*− and B° 2!D*{sup ±}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2[beta] outside of decays containing charmonium. It provides a comparison to measurements of sin2[beta] using b 2!c{bar c}s, and permits an observation into potential new physics sources of CP violation, such as supersymmetry, via differences between these measurements and those of B° 2!J/[psi] K{sub S}° as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 ± 0.88(stat) ± 0.12(syst) and C = -0.30 ± 0.50(stat) ± 0.13(syst) for B° 2!D*− D; S = -0.43 ± 1.41(stat) ± 0.23(syst) and C = 0.53 ± 0.74(stat) ± 0.15(syst) for B° 2!D*+ D−; and S = -0.05 ± 0.45(stat) ± 0.05(syst) and C = 0.12 ± 0.30(stat) {+-} 0.05(syst) for B° 2!D*− D+; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.
Download or read book B Meson Decays to Open Charm and Charmonium at BABAR written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since it began recording data in 1999, the BaBar detector at the SLAC B Factory has collected nearly 90 million B meson pairs. Using this sample, they are able to make precise measurements of B decays to open charm and charmonium. In particular, they have measured the rates for B [yields] D[bar D]K, for the color-suppressed modes B[sup 0] [yields] D[sup 0][pi][sup 0], B[sup 0] [yields] D[sup 0][eta], and B[sup 0] [yields] D[sup 0][omega], for B[sup +] [yields] [chi][sub c][sup 0]K[sup +], and for B[sup 0] [yields] D(*)[sub s][sup +] D*[sup -]. They have also begun preparations for a measurement of the CKM angle [gamma] by studying the modes B[sup +] [yields] D[sup 0]K[sup +], B[sup 0] [yields] D(*)[sub s][sup +] [pi][sup -], and B[sup 0] [yields] D(*)[sub s][sup +] K[sup -].
Download or read book B Decays to Hadronic States with Charm Charmonium in BABAR written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the studies of three different B decays to hadronic states are presented. These results are based on 1999-2003 dataset collected by the BABAR experiment at the PEP-II ee− storage ring at the Stanford Linear Accelerator Center. The measurements are the hadronic branching fraction of B 2!J/[Psi]p{bar {Lambda}}, B° 2!J/[Psi]p{bar p}, B° 2!D*{sup {+-}} D{sup {-+}}, and the direct CP-asymmetry in B° 2!D°(CP)K− channels.
Download or read book Babar written by P. Grenier and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of time-dependent CP asymmetries of neutral B decays to several charm and charmonium final states. Data have been collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center. In the absence of penguin contribution, the Standard Model predicts the time-dependent CP asymmetry parameters S and C are to be {eta}{sub CP} sin(2{beta}) and 0, respectively.
Download or read book Measurement of Inclusive and Exclusive B Decays to Charmonium with BaBar written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 8.5M BB events recorded by the BABAR detector the yield of inclusive J[psi], the branching ratios of [psi](2S) and x{sub c} are presented. Combining the charmonium state with either a K{sup +-}, K{sub s}°, K*{sup +-} exclusive B decays are reconstructed and their branching ratios determined. Using the fully reconstructed decays, both the B° B{sup +-} masses and their difference is measured. Finally the contributions of CP even and odd amplitudes in the decay B → J/[psi] K* are determined from an angular analysis.
Download or read book B Decays to Charm and Charmonium States in BABAR written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hadronic B Decays to Open Charm at the BaBar Experiment written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using about 23M B{bar B} events collected in 1999-2000 with the BABAR detector, they report on the decays B 2!D(*){bar D}(*)K and B° 2!D*D*−. The branching fractions of the low background decay modes B° 2!D*− D(*)°K are determined to be [Beta](B° 2!D*− D°K+) = (2.8 ± 0.7 ± 0.5) x 10−3 and [Beta](B° 2!D*−D*°K+) = (6.8 ± 1.7 ± 1.7) x 10−3, where the first error quoted is statistical and the second systematic. Observation of a significant number of candidates in the color-suppressed decay mode B+ 2!D*+D*− K+ is reported with a branching fraction [Beta](B+ 2!D*+D*− K+) = (3.4 ± 1.6 ± 0.9) x 10−3. Decays of the type B 2!D(*){bar D}(*) can be used to provide a measurement of the parameter sin2[beta] of the Unitarity Triangle. For this decay mode they measure a branching fraction of [Beta](B° 2!D*+D*−) = (8.0 ± 1.6 ± 1.2) x 10−4.
Download or read book Measurements of Sin2beta at BaBar with Charmonium and Penguin Decays written by Katherine A. George and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This article summarizes measurements of time-dependent CP asymmetries in decays of neutral B mesons to charmonium, open-charm and gluonic penguin-dominated charmless final states. Unless otherwise stated, these measurements are based on a sample of approximately 230 million {Upsilon}(4S) {yields} B{bar B} decays collected by the BABAR detector at the PEP-II asymmetric-energy B-factory.
Download or read book B Meson Decays to Open Charm and Charmonium at BABAR written by E. Varnes and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since it began recording data in 1999, the BaBar detector at the SLAC B Factory has collected nearly 90 million B meson pairs. Using this sample, they are able to make precise measurements of B decays to open charm and charmonium. In particular, they have measured the rates for B {yields} D{bar D}K, for the color-suppressed modes B{sup 0} {yields} D{sup 0}{pi}{sup 0}, B{sup 0} {yields} D{sup 0}{eta}, and B{sup 0} {yields} D{sup 0}{omega}, for B{sup +} {yields} {chi}{sub c}{sup 0}K{sup +}, and for B{sup 0} {yields} D(*){sub s}{sup +} D*{sup -}. They have also begun preparations for a measurement of the CKM angle {gamma} by studying the modes B{sup +} {yields} D{sup 0}K{sup +}, B{sup 0} {yields} D(*){sub s}{sup +} {pi}{sup -}, and B{sup 0} {yields} D(*){sub s}{sup +} K{sup -}.
Download or read book Measurement of Exclusive B Decays to Charmonium and K Or K Branching Fractions with the BaBar Detector 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 report preliminary results on the measurement of branching fractions of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state and a light strange meson. The charmonium mesons considered are J/[psi], [psi](2S) and [chi][sub c1], and the light mesons are either K or K*. They use a sample of about 124 million B[bar B] events collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center.
Download or read book B Decays to Charm States at BABAR written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper recent results in the field of B meson decays to states containing charm are presented. These analyses are based on the 1999-2003 dataset collected by the BABAR experiment at the PEP-II ee− storage ring at the Stanford Linear Accelerator Center. Special attention is devoted to B decays to final states containing D mesons. In addition a few new results from B decays to charmonium states are reported.
Download or read book Exclusive B Decays to Charmonium Final States written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on exclusive decays of B mesons into final states containing charmonium using data collected with the BABAR detector at the PEP-II storage rings. The charmonium states considered here are J/[psi], [psi](2S), and [chi]{sub c1}. Branching fractions for several exclusive final states, a measurement of the decay amplitudes for the B° 2!J/[psi] K* decay, and measurements of the B° and B masses are presented. All of the results we present here are preliminary.
Download or read book Study of B Decays to Charmonium at BaBar written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 22.7 million BB events recorded with the BABAR detector, the inclusive branching fractions for the production of J/[psi], [psi](2S) and [chi]{sub c} in B decays are presented. Combining the charmonium state with a K{sup {+-}}, K°, K*{sup {+-}}, K*° or [pi]°, B decays are reconstructed exclusively and branching fractions are determined. A preliminary study is also presented for the B → [eta]{sub c}K decay mode.