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Measurement Of Branching Fractions And Cp Asymmetries In B Wk Decays And First Observation Of The B0 Psi2spi0 Decay
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Book Synopsis Measurement of Branching Fractions and CP Asymmetries in B->wK Decays and First Observation of the B0->psi(2s)pi0 Decay by : Veronika Chobanova
Download or read book Measurement of Branching Fractions and CP Asymmetries in B->wK Decays and First Observation of the B0->psi(2s)pi0 Decay written by Veronika Chobanova and published by . This book was released on 2015 with total page 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 CP Asymmetries and Branching Fractions in B0 -] Pi+ Pi-, B0 -] K+ Pi-, B0 -] Pi0 Pi0, B0 -] K0 Pi0 and Isospin Analysis of B -] Pi Pi Decays by :
Download or read book Measurement of CP Asymmetries and Branching Fractions in B0 -] Pi+ Pi-, B0 -] K+ Pi-, B0 -] Pi0 Pi0, B0 -] K0 Pi0 and Isospin Analysis of B -] Pi Pi Decays written by and published by . This book was released on 2008 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of improved measurements of the CP-violating asymmetries and branching fractions in the decays B° →??−, B° → K+?−, B° →?°?°, and B° → K°?°. This update includes all data taken at the?(4S) resonance by the BABAR experiment at the asymmetric PEP-II B-meson factory at SLAC, corresponding to 467 ± 5 million B{bar B} pairs. They find S{sub??} = -0.68 ± 0.10 ± 0.03, C{sub??} = -0.25 ± 0.08 ± 0.02,?{sub K{sub?}} = -0.107 ± 0.016{sub -0.004}, {sup +0.006}, C{sub?°?°} = -0.43 ± 0.26 ± 0.05,?(B° →?°?°) = (1.83 ± 0.21 ± 0.13) x 10−6,?(B° → K°?°) = (10.1 ± 0.6 ± 0.4) x 10−6, where the first error is statistical and the second is systematic. They observe CP violation with a significance of 6.7? in B° → {pi}− and 6.1? in B° → K+{pi}−. Constraints on the Unitarity Triangle angle? are determined from the isospin relation between all B → {pi}{pi} rates and asymmetries.
Book Synopsis Branching Fractions and Direct CP Asymmetries of Charmless Decay Modes at the Tevatron by : Michael Morello
Download or read book Branching Fractions and Direct CP Asymmetries of Charmless Decay Modes at the Tevatron written by Michael Morello and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present new CDF results on the branching fractions and time-integrated direct CP asymmetries for B{sup 0} and B{sub s}{sup 0} decay modes into pairs of charmless charged hadrons (pion or kaon). The data set for this update amounts to 1 fb{sup -1} of {bar p}p collisions at {radical}s = 1.96 TeV. They report the first observation of the B{sub s}{sup 0} {yields} K{sup -}{pi}{sup +} mode and a measurement of its branching fraction and direct CP asymmetry. They also observe for the first time two charmless decays of b-baryon: {Lambda}{sub b}{sup 0} {yields} p{pi}{sup -} and {Lambda}{sub b}{sup 0} {yields} pK{sup -}.
Book Synopsis A Measurement of the Branching Fractions and CP Asymmetries for the Decays B±{u2192}p±???????? and B±{u2192}K*???????? with the Babar Detector by : James Robert Gaillard
Download or read book A Measurement of the Branching Fractions and CP Asymmetries for the Decays B±{u2192}p±???????? and B±{u2192}K*???????? with the Babar Detector written by James Robert Gaillard and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Кинословарь в 2 томач written by and published by . This book was released on 1966 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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.
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 MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. by :
Download or read book MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 88 million[Upsilon](4S)[yields] B[bar B] decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-independent fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][pi][sup+][pi][sup -])= (4.7[+-] 0.6[+-] 0.2) x 10[sup -6] and[Beta](B[sup 0][yields] K[sup+][pi][sup -])= (17.9[+-] 0.9[+-] 0.7) x 10[sup -6], where the first uncertainty is statistical and the second is systematic; the 90% confidence level upper limit[Beta](B[sup 0][yields] K[sup+]K[sup -])
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 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 Measurements of Branching Fractions, Polarizations, and Direct CP-violation Asymmetries in B -] Rho0 K* and B -] F0(980) K* Decays by :
Download or read book Measurements of Branching Fractions, Polarizations, and Direct CP-violation Asymmetries in B -] Rho0 K* and B -] F0(980) K* 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 present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B →?°K*+ and B+ f0(980)K*+ with a sample of (467 ± 5) x 106 B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at the SLAC National Accelerator Laboratory. We observe B+ →?°K*+ with a significance of 5.3? and measure the branching fraction?(B+ →?°K*+) = (4.6 ± 1.0 ± 0.4) x 10−6, the longitudinal polarization f{sub L} = 0.78 ± 0.12 ± 0.03, and the CP-violation asymmetry A{sub CP} = 0.31 ± 0.13 ± 0.03. We observe B+ → f0(980)K*+ and measure the branching fraction?(B+ → f0(980)K*+) x?(f0(980) →?+?−) = (4.2 ± 0.6 ± 0.3) x 10−6 and the CP-violation asymmetry A{sub CP} = -0.15 ± 0.12 ± 0.03. The first uncertainty quoted is statistical and the second is systematic.
Book Synopsis A Measurement of the Branching Fractions and CP Asymmetries for the Decays B±{u2192}p±???????? and B±{u2192}K*???????? with the Babar Detector by : James Robert Gaillard
Download or read book A Measurement of the Branching Fractions and CP Asymmetries for the Decays B±{u2192}p±???????? and B±{u2192}K*???????? with the Babar Detector written by James Robert Gaillard and published by . This book was released on 2005 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of the Branching Fractions and CP Asymmetries of B -] D0_CP K Decays by :
Download or read book Measurements of the Branching Fractions and CP Asymmetries of B -] D0_CP K Decays written by and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a study of the decay B− 2!D{sub (CP)}° K− and its charge conjugate, where D{sub (CP)}° is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 232 million [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the PEP-II ee− storage ring. We measure the partial-rate charge asymmetries AC{sub CP±} and the ratios R{sub CP±} of the B 2!D° K decay branching fractions as measured in CP± and non-CP D° decays: A{sub CP+} = 0.35 ± 0.13(stat) ± 0.04(syst), A{sub CP-} = -0.06 ± 0.13(stat) ± 0.04(syst), R{sub CP+} = 0.90 ± 0.12(stat) ± 0.04(syst), R{sub CP-} = 0.86 {+-} 0.10(stat) {+-} 0.05(syst).
Book Synopsis Measurement of the Branching Fraction and the CP-Violating Asymmetry for the Decay B0 to K0s Pi0 by :
Download or read book Measurement of the Branching Fraction and the CP-Violating Asymmetry for the Decay B0 to K0s Pi0 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors measure the branching fraction and the CP-violating asymmetry of B° 2!K{sub S}°[pi]° decays with 227 million [Upsilon](4S) 2!B{bar B} events collected with the BABAR detector at the PEP-II asymmetric-energy ee− collider at SLAC. They obtain a branching fraction [Beta](B° 2!K°[pi]°) = (11.4 ± 0.9 ± 0.6) x 10−6 and CP-violating asymmetry parameters C{sub K{sub S}°[pi]°} = 0.06 ± 0.18 ± 0.03 and S{sub K{sub S}°[pi]°} = 0.35{sub -0.33}{sup +0.30} ± 0.04, where the first error is statistical and the second systematic.
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