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A Measurement Of The B0 J Psi Pi Pi Branching Fraction
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Book Synopsis A Measurement of the B0 --] J/psi Pi+pi- Branching Fraction by :
Download or read book A Measurement of the B0 --] J/psi Pi+pi- Branching Fraction written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the branching fraction for the decay of the neutral B meson into the final state J/[psi][pi][sup+][pi][sup -]. The data set contains approximately 56 million B[bar B] pairs produced at the[Upsilon](4S) resonance and recorded with the BABAR detector at the PEP-II asymmetric-energy e[sup+]e[sup -] storage ring. The result of this analysis is[Beta](B[sup 0][yields] J/[psi][pi][sup+][pi][sup -])= (4.6[+-] 0.7[+-] 0.6) x 10[sup -5], where the first error is statistical and the second is systematic. In addition we measure[Beta](B[sup 0][yields] J?[psi][rho][sup 0])= (1.6[+-] 0.6[+-] 0.4) x 10[sup -5].
Book Synopsis Documents concernant Jane Bryan, vedette de cinéma by :
Download or read book Documents concernant Jane Bryan, vedette de cinéma written by and published by . This book was released on with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Branching Fraction and Charge Asymmetry Measurements InB to J/psi Pi Pi Decays by :
Download or read book Branching Fraction and Charge Asymmetry Measurements InB to J/psi Pi Pi Decays written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the decays B° → J/???− and B+ → J/??+?°, including intermediate resonances, using a sample of 382 million B{bar B} pairs recorded by the BABAR detector at the PEP-II e+e− B factory. They measure the branching fractions?(B° → J/??°) = (2.7 ± 0.3 ± 0.17) x 10−5 and?(B+ → J/??+) = (5.0 ± 0.7 ± 0.31) x 10−5. The authors also set the following upper limits at the 90% confidence level:?(B° → J/??+?− non-resonant)
Book Synopsis Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction by :
Download or read book Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction 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 study the decay B[sup -] [yields] J/[psi]K[sup -][pi][sup +][pi][sup -] using 117 million B[bar B] events collected at the [Upsilon](4S) resonance with the BaBar detector at the PEP-II e[sup +]e[sup -] asymmetric-energy storage ring. They measure the branching fractions [Beta](B[sup -] [yields] J/[psi]K[sup -] [pi][sup +][pi][sup -]) = (116 [+-] 7(stat.) [+-] 9(syst.)) x 10[sup -5] and [Beta](B[sup -] [yields] X(3872)K[sup -]) x [Beta](X(3872) [yields] J/[psi][pi][sup +][pi][sup -]) = (1.28 [+-] 0.41) x 10[sup -5] and find the mass of the X(3872) to be 3873.4 [+-] 1.4MeV/c[sup 2]. They search for the h[sub c] narrow state in the decay B[sup -] [yields] h[sub c] K[sup -], h[sub c] [yields] J/[psi][pi][sup +][pi][sup -] and for the decay B[sup -] [yields] J/[psi]D[sup 0][pi][sup -], with D[sup 0] [yields] K[sup -][pi][sup +]. They set the 90% C.L. limits [Beta](B[sup -] [yields] h[sub c]K[sup -]) x [Beta](h[sub c] [yields] J/[psi][pi][sup +][pi][sup -])
Book Synopsis Measurement of the Ratio of Branching Ratios B($B^+ \to J/\psi \pi^+$) by :
Download or read book Measurement of the Ratio of Branching Ratios B($B^+ \to J/\psi \pi^+$) written by and published by . This book was released on 1996 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on a measurement of the branching ratio of the Cabibbo-suppressed decay B$+\atop{u}$ 2!J/[Psi][pi]+, where J/[Psi] 2![mu]+[mu]-
Book Synopsis Measurement of the Branching Fractions for Psi(2S) --] E+e- and Psi(2S)--]mu+mu- by :
Download or read book Measurement of the Branching Fractions for Psi(2S) --] E+e- and Psi(2S)--]mu+mu- 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 measure the branching fractions of the [psi](2S) meson to the leptonic final states e[sup +]e[sup -] and [mu][sup +][mu][sup -] relative to that for [psi](2S) [yields] J/[psi] [pi][sup +][pi][sup -]. The method uses [psi](2S) mesons produced in the decay of B mesons at the [Upsilon](4S) resonance in a data sample collected with the BABAR detector at the Stanford Linear Accelerator Center. Using previous measurements for the [psi](2S) [yields] J/[psi] [pi][sup +][pi][sup -] branching fraction, they determine the e[sup +]e[sup -] and [mu][sup +][mu][sup -] branching fractions to be 0.0078 [+-] 0.0009 [+-] 0.0008 and 0.0067 [+-] 0.0008 [+-] 0.0007 respectively.
Book Synopsis Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi Pi0 Decays by : B. Aubert
Download or read book Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi Pi0 Decays written by B. Aubert and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the branching fraction and time-dependent CP asymmetries in B{sup 0} {yields} J/{psi} {pi}{sup 0} decays based on (231.8 {+-} 2.6) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC during the years 1999-2004. We obtain a branching fraction {Beta}(B{sup 0} {yields} J/{psi}{pi}{sup 0}) = (1.94 {+-} 0.22 (stat) {+-} 0.17 (syst)) x 10{sup -5}. They also measure the CP asymmetry parameters C = -0.21 {+-} 0.26 (stat) {+-} 0.09 (syst) and S = -0.68 {+-} 0.30 (stat) {+-} 0.04 (syst). All results presented in this paper are preliminary.
Book Synopsis Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi Pi0 Decays by : K. George
Download or read book Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi Pi0 Decays written by K. George and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the branching fraction and time-dependent CP asymmetries in B{sup 0} {yields} J/{psi}{pi}{sup 0} decays based on (231.8 {+-} 2.6) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction {Beta}(B{sup 0} {yields} J/{psi}{pi}{sup 0}) = (1.94 {+-} 0.22 (stat) {+-} 0.17 (syst)) x 10{sup -5}. We also measure the CP asymmetry parameters C = -0.21 {+-} 0.26 (stat) {+-} 0.06 (syst) and S = -0.68 {+-} 0.30 (stat) {+-} 0.04 (syst).
Book Synopsis Measurement of the branching ratios for the decays J/[psi] (3.1) --> f[omega] and J/[psi] (3.1) --> B[pi] by : J. Burmester
Download or read book Measurement of the branching ratios for the decays J/[psi] (3.1) --> f[omega] and J/[psi] (3.1) --> B[pi] written by J. Burmester and published by . This book was released on 1977 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Ratio of the Production Cross Sections Times Branching Fractions of Bc" 2!J/[psi][pi]"and B" 2!J/[psi] K" and B(Bc"2!J/[psi] [pi]"[pi]"[pi]-/+)/B(Bc" 2!J/[psi] [pi]") in Pp Collisions at [arrow]" by :
Download or read book Measurement of the Ratio of the Production Cross Sections Times Branching Fractions of Bc" 2!J/[psi][pi]"and B" 2!J/[psi] K" and B(Bc"2!J/[psi] [pi]"[pi]"[pi]-/+)/B(Bc" 2!J/[psi] [pi]") in Pp Collisions at [arrow]" written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ratio of the production cross sections times branching fractions ([sigma](Bc") B(Bc" 2!J/[psi][pi]"))/([sigma](B") B(B" 2!J/[psi]K") is studied in proton-proton collisions at a center-of-mass energy of 7 TeV with the CMS detector at the LHC. The kinematic region investigated requires Ba, sub>c" and B"mesons with transverse momentum p[tau]> 15 GeV and rapidity.
Book Synopsis A Study of B+/- --] J/psi Pi+/- and B+/- --] J/psi K+/- Decays by :
Download or read book A Study of B+/- --] J/psi Pi+/- and B+/- --] J/psi K+/- Decays written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the B{sup ±} → J/[psi][pi]{sup ±} and B{sup ±} → J/[psi] K{sup ±} decays using a 20.7 fb−1 data set collected with the BABAR detector. We observe a signal of 51 ± 10 B{sup ±} → J/[psi][pi]{sup ±} events and determine the ratio [Beta](B{sup {+-}} → J/[psi][pi]{sup {+-}})/[Beta](B{sup {+-}} → J/[psi] K{sup {+-}}) to be [3.91 {+-} 0.78(stat.) {+-} 0.19(syst.)]%. The CP-violating charge asymmetries for the B{sup {+-}} → J/[psi] [pi]{sup {+-}} and B{sup {+-}} → J/[psi] K{sup {+-}} decays are determined to be [Alpha]{sub {pi}} = 0.01 {+-} 0.22(stat.) {+-} 0.01(syst.) and [Alpha]{sub K} = 0.003 {+-} 0.030(stat.) {+-} 0.004(syst.).
Book Synopsis ชาวกัมพูชาอพยพกับบูรณาการของชาติ by :
Download or read book ชาวกัมพูชาอพยพกับบูรณาการของชาติ written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 B0 ---] Psi (2S) Lambda0 Branching Fraction on BaBar at the Stanford Linear Accelerator Center (Abstract Only). by : Alexander Raymond Olivas (Jr)
Download or read book Measurement of the B0 ---] Psi (2S) Lambda0 Branching Fraction on BaBar at the Stanford Linear Accelerator Center (Abstract Only). written by Alexander Raymond Olivas (Jr) and published by . This book was released on 2005 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The decays of B{sup 0} mesons to hadronic final states remains a rich area of physics on BaBar. Not only do the c{bar c}-K final states (e.g. B{sup 0} {yields} {psi}(2S)K{sup 0}) allow for the measurement of CP Violation, but the branching fractions provide a sensitive test of the theoretical methods used to account for low energy non-perturbative QCD effects. They present the measurement of the branching fraction for the decay B{sup 0} {yields} {psi}(2S)K{sub s}. The data set consists of 88.8 {+-} 1.0 x 10{sup 6} B{bar b} pairs collected on the e{sup +}e{sup -} {yields} {Upsilon}(4S) resonance on BaBar/PEP-II at the Stanford Linear Accelerator Center (SLAC). This analysis features a modification of present cuts, with respect to those published so far on BaBar, on the K{sub S} {yields} {pi}{sup +}{pi}{sup -} and {psi}(2S) {yields} J/{psi}{pi}{sup +}{pi}{sup -} which aim at reducing the background while keeping the signal intact. Various data selection criteria are studied for the lepton modes (e{sup +}e{sup -} and {mu}{sup +}{mu}{sup -}) of the J/{psi} and {psi}(2S) to improve signal purity as well as study the stability of the resultant branching fractions.
Book Synopsis Study of B{sup {+-}} 2!J/[psi] [pi]{sup {+-}} and B{sup {+-}} 2!J/[psi] K{sup {+-}} Decays by :
Download or read book Study of B{sup {+-}} 2!J/[psi] [pi]{sup {+-}} and B{sup {+-}} 2!J/[psi] K{sup {+-}} Decays written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study B{sup ±} → J/[psi] [pi]{sup ±} and B{sup ±} → J/[psi] K{sup ±} decays in a sample of about 89 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. They observe a signal of 244 ± 20 B{sup ±} → J/[psi] [pi]{sup ±} events and determine the ratio [Beta](B{sup {+-}} → J/[psi] [pi]{sup {+-}})/[Beta](B{sup {+-}} → J/[psi] K{sup {+-}}) to be [5.37 {+-} 0.45(stat.) {+-} 0.11(syst.)]%. The charge asymmetries for the B{sup {+-}} → J/[psi] [pi]{sup {+-}} and B{sup {+-}} → J/[psi] K{sup {+-}} decays are determined to be [Alpha]{sub {pi}} = 0.123 {+-} 0.085(stat.) {+-} 0.004(syst.) and [Alpha]{sub K} = 0.030 {+-} 0.015(stat.) {+-} 0.006(syst.), respectively.
Book Synopsis Kul'tura Turkmenii v srednie veka by :
Download or read book Kul'tura Turkmenii v srednie veka written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of B{sup {+-}} 2!J/[Psi][pi]{sup {+-}} and B{sup {+-}} 2!J/[Psi]K{sup {+-}} Decays by :
Download or read book A Study of B{sup {+-}} 2!J/[Psi][pi]{sup {+-}} and B{sup {+-}} 2!J/[Psi]K{sup {+-}} Decays written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have studied the B{sup ±} → J/[psi][pi]{sup ±} and B{sup ±} → J/[psi]K{sup ±} decays using a 20.7 fb−1 data set collected with the BABAR detector. They observe a signal of 51 ± 10 B{sup ±} → J/[psi][pi]{sup ±} events and determine the ratio [Beta]({sup {+-}} → J/[psi][pi]{sup {+-}})/[Beta](B{sup {+-}} → J/[psi]K{sup {+-}}) to be [3.91 {+-} 0.78(stat.) {+-} 0.19(syst.)]%. The CP-violating charge asymmetries for the B{sup {+-}} → J/[psi][pi]{sup {+-}} and B{sup {+-}} → J/[psi]{sup {+-}}K{sup {+-}} decays are determined to be [Alpha]{sub {pi}} = 0.01 {+-} 0.22(stat.) {+-} 0.01(syst.) and [Alpha]{sub K} = 0.003 {+-} 0.030(stat.) {+-} 0.004(syst.).
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