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 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 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 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 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 Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002 written by S. Bentvelsen and published by Elsevier. This book was released on 2012-12-02 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first precision measurements on CP violation in the B system are reported. Both the BELLE and the BABAR collaboration presented, among others, results for sin 2ß with much improved accuracy. Results from the Sudbury Neutrino Observatory, SNO, also deserve to be mentioned. The convincing evidence of solar neutrino oscillations had been presented by SNO prior to the conference; a full presentation was given at the conference. An incredibly precise measurement of the anomalous magnetic moment of the muon is reported, a fresh result from the Brookhaven National Laboratory. Apart from these distinct physics highlights, there are also the first results from the new Tevatron run and from the relativistic heavy ion collider RHIC. Theorists write of our ever better understanding of the Standard Model and of what might lie beyond. Risky as it is to highlight only a couple of exciting subjects, it is merely meantto whet the appetite for further reading.
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 Measurement of Inclusive Production of Charmonium States in B Meson Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors reconstruct the charmonium mesons J/[psi], [psi](2S) and[chi][sub c] using a sample of 8.46 x 10[sup 6] B[bar B] events collected by the BABAR detector operating at e[sup+]e[sup -] center of mass energies near the[Lambda](4S) resonance. by measuring rates relative to the branching fraction of the J/[psi], they obtain preliminary inclusive B branching fractions of (0.25[+-] 0.02[+-] 0.02)% to the[psi](2S) and (0.39[+-] 0.04[+-] 0.04)% to the[chi][sub c1], and set a 90% confidence level limit of 0.24% on decays through the[chi][sub c2].
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 Proceedings of the International Conference on High Energy Physics written by and published by . This book was released on 2002 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Inclusive Production of Charmonium Mesons in B Decay written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The inclusive production of charmonium mesons in B meson decay has been studied in a 20.3 fb[sup -1] data set collected by the BABAR experiment operating at the[Upsilon](4S) resonance. Branching fractions have been measured for the inclusive production of the charmonium mesons J/[psi], [psi](2S), [chi][sub c1], and[chi][sub c2]. The branching fractions are also presented as a function of the center-of-mass momentum of the mesons and of the helicity of the J/[psi].
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 High Energy Physics Ichep 2000 Proceedings Of The 30th International Conference In 2 Volumes written by Chong-sa Lim and published by World Scientific. This book was released on 2001-04-30 with total page 1550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents topics of major interest to the high energy physics community, as well as recent research results.
Download or read book Study of B Meson Decays to Final States with a Single Charm Baryon written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of B-meson decays to final states with a single charm baryon is presented based on data recorded by the BABAR detector at the Stanford Linear Accelerator Center. Although the B meson is the lightest bottom-flavored meson, it is heavy enough to decay to a baryon made of three quarks and an antibaryon made of three antiquarks. By studying the baryonic weak decays of the B meson, we can investigate baryon production mechanisms in heavy meson decays. In particular, we measure the rates of the decays B- → [Lambda]+c$\bar{p}$[pi]- and $\bar{B}$0 → [Lambda]+c$\bar{p}$. Comparing these rates, we confirm an observed trend in baryonic B decays that the decay with the lower energy release, B- → [Lambda]+c$\bar{p}$[pi]-, is favored over $\bar{B}$0 → [Lambda]+c$\bar{p}$. The dynamics of the baryon-antibaryon ([Lambda]+c$\bar{p}$) system in the three-body decay also provide insight into baryon-antibaryon production mechanisms. The B- → [Lambda]+c$\bar{p}$[pi]- system is a laboratory for searches for excited #c baryon states; we observe the resonant decays B- → [Sigma]c(2455) 0$\bar{p}$ and B- → [Sigma]c(2800) 0$\bar{p}$. This is the first observation of the decay B- → [Sigma]c(2800) 0$\bar{p}$; however, the mass of the observed #c(2800)0 state is inconsistent with previous measurements. Finally, we examine the angular distribution of the B- → [Sigma]c(2455) 0$\bar{p}$ decays and measure the spin of the B- → [Sigma]c(2455) 0$\bar{p}$ baryon to be J = 1/2, as predicted by the quark model.
Download or read book Wen lin man bu written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Branching Fractions for Exclusive B Decays to Charmonium Final States written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report branching fraction measurements for exclusive decays of charged and neutral B mesons into two-body final states containing a charmonium meson. We use a sample of 22.72[+-] 0.36 million B[bar B] events collected between October 1999 and October 2000 with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. The charmonium mesons considered here are J/[psi], [psi](2S), [chi][sub c1], and the light meson in the decay is either a K, K*, or[pi][sup 0].
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.
