Download or read book Branching Fractions in B Phi H and Search for Direct CP Violation in B Phi K written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary measurements of branching fractions of the b[yields] s[bar s]s penguin-dominated decays B[sup[+-]][yields][phi]K[sup[+-]] and B[sup 0][yields][phi]K[sup 0] in a sample of approximately 89 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factor at SLAC. They determine[Beta](B[sup[+-]][yields][phi]K[sup[+-]])= (10.0[sub -0.8][sup+0.9](stat.)[+-] 0.5(syst.)) x 10[sup -6] and[Beta](B[sup 0][yields][phi]K[sup 0])= (7.6[sub -1.2][sup+1.3](stat.)[+-] 0.5(syst.)) x 10[sup -6]. Additionally, they measure the charge asymmetry[Alpha][sub CP](B[sup[+-]][yields][phi]K[sup[+-]])= 0.039[+-] 0.086(stat.)[+-] 0.011(syst.) and set an upper limit on the CKM- and color-suppressed decay B[sup[+-]][yields][phi][pi][sup[+-]], [Beta](B[sup[+-]][yields][phi][pi][sup[+-]])

Download or read book Measurements of Branching Fractions in B yields phi K and B yields phi pi and Search for Direct CP Violation in B sup yields phi K sup written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of branching fractions in the b[yields] s[bar s]s penguin-dominated decays B[sup+][yields][phi]K[sup+] and B[sup 0][yields][phi]K[sup 0] in a sample of approximately 89 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine[Beta](B[sup+][yields][phi]K[sup+])= (10.0[sub -0.8][sup+0.9][+-] 0.5) x 10[sup -6] and[Beta](B[sup 0][yields][phi]K[sup 0])= (8.4[sub -1.3][sup+1.5][+-] 0.5) x 10[sup -6]. Additionally, they measure the CP-violating charge asymmetry[Alpha][sub CP](B[sup[+-]][yields][phi]K[sup[+-]])= 0.04[+-] 0.09[+-] 0.01, with a 90% confidence-level interval of[-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B[sup+][yields][phi][pi][sup+], [Beta](B[sup+][yields][phi][pi][sup+])

Download or read book Measurements of Branching Fractions in B 2 phi K and B 2 phi pi and Search for Direct CP Violation in B sup 2 phi K sup 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 authors present measurements of branching fractions in the b 2!s{bar s}s penguin-dominated decays B 2![phi]K and B° 2![phi]K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine [Beta](B+ 2![phi]K+) = (10.0{sub -0.8}{sup +0.9} ± 0.5) x 10−6 and [Beta](B° 2![phi]K°) = (8.4{sub -1.3}{sup +1.5} ± 0.5) x 10−6. Additionally, they measure the CP-violating charge asymmetry [Alpha]{sub CP}(B{sup ±} 2![phi]K{sup ±}) = 0.04 {+-} 0.09 {+-} 0.01, with a 90% confidence-level interval of [-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B+ 2![phi][pi]+, [Beta](B+ 2![phi][pi]+)

Download or read book 2 written by and published by . This book was released on 1966 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Branching Fractions and CP Violating Asymmetries in B Rho h 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 in B[sup 0][yields][rho][sup[+-]][pi][sup[-+]] and B[sup 0][yields][rho][sup -]K[sup+] decays. The results are obtained from a data sample of 88.9 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. From a time-dependent maximum likelihood fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][rho][sup[+-]][pi][sup[-+]])= (22.6[+-] 1.8 (stat)[+-] 2.2 (syst)) x 10[sup -6] and[Beta](B[sup 0][yields][rho][sup -]K[sup+])= (7.3[sub -1.2][sup+1.3][+-] 1.3) x 10[sup -6]; and the CP-violating charge asymmetries A[sub CP][sup[rho][pi]]= -0.18[+-] 0.08[+-] 0.03 and A[sub CP][sup[rho]K]= 0.28[+-] 0.17[+-] 0.08; the direct CP violation parameter C[sub[rho][pi]]= 0.36[+-] 0.18[+-] 0.04 and the mixing-induced CP violation parameter S[sub[rho][pi]]= 0.19[+-] 0.24[+-] 0.03; and the dilution parameters[Delta]C[sub[rho][pi]]= 0.28[sub -0.19][sup+0.18][+-] 0.04 and[Delta]S[sub[rho][pi]]= 0.15[+-] 0.25[+-] 0.03.

Download or read book Measurement of the Branching Fraction for D S Phi Pi written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a model-independent measurement of[Beta](D[sub s][sup -][yields][phi][pi][sup -])/[Beta](D[sup 0][yields] K[sup -][pi][sup+]) by partially reconstructing the decay[bar B][sup 0][yields] D*[sup+]D*[sub s][sup -]. Using data collected with the CLEO II detector at CESR, they determine[Beta](D[sub s][sup -][yields][phi][pi][sup -])/[Beta](D[sup 0][yields] K[sup -][pi][sup+])= 0.92[+-] 0.20(stat.)[+-] 0.11(syst.). Their measurement of[Beta](D[sup 0][yields] K[sup -][pi][sup+]) then gives[Beta](D[sub s][sup -][yields][phi][pi][sup -])= (3.59[+-] 0.77[+-] 0.48)%.

Download or read book Measurements of CP Violating Asymmetries and BranchingFractions in B Decays to OmegaK and OmegaPi written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of CP-violating asymmetries and branching fractions for the decays B{sup +} {yields} {omega}{pi}{sup +}, B{sup +} {yields} {omega}K{sup +}, and B{sup 0} {yields} {omega}K{sup 0}. The data sample corresponds to 232 million B{bar B} pairs produced by e{sup +}e{sup -} annihilation at the {Upsilon}(4S) resonance. For the decay B{sup 0} {yields} {omega}K{sub s}{sup 0}, we measure the time-dependent CP-violation parameters S = 0.51{sub -0.39}{sup +0.35} {+-} 0.02, and C = -0.55{sub -0.26}{sup +0.28} {+-} 0.03. We also measure the branching fractions, in units of 10{sup -6}, {Beta}(B{sup +} {yields} {omega}{pi}{sup +}) = 6.1 {+-} 0.7 {+-} 0.4, {Beta}(B{sup +} {yields} {omega}K{sup +}) = 6.1 {+-} 0.6 {+-} 0.4, and {Beta}(B{sup 0} {yields} {omega}K{sup 0}) = 6.2 {+-} 1.0 {+-} 0.4, and charge asymmetries {Alpha}{sub ch}(B{sup +} {yields} {omega}{pi}{sup +}) = -0.01 {+-} 0.10 {+-} 0.01 and {Alpha}{sub ch}(B{sup +} {yields} {omega}K{sup +}) = 0.05 {+-} 0.09 {+-} 0.01.

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.

Download or read book Branching Fraction Measurements of B Eta C K Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the decays B[sup +] [yields] [eta][sub c]K[sup +] and B[sup 0] [yields] [eta][sub c]K[sup 0], where the [eta][sub c] is reconstructed in the K[sub S][sup 0] K[sup [+-]] [pi][sup [-+]] and K[sup +]K[sup -] [pi][sup 0] decay modes. Results are based on a sample of 86 million B[bar B] pairs collected with the BABAR detector at the SLAC e[sup +]e[sup -] B Factory. We measure the branching fractions [Beta](B[sup +] [yields] [eta][sub c]K[sup +]) = (1.34 [+-] 0.09 [+-] 0.13 [+-] 0.41) x 10[sup -3] and [Beta](B[sup 0] [yields] [eta][sub c]K[sup 0]) = (1.18 [+-] 0.16 [+-] 0.13 [+-] 0.37) x 10[sup -3], where the first error is statistical, the second is systematic, and the third reflects the [eta][sub c] branching fraction uncertainty. In addition, we search for B [yields] [eta][sub c]K events with [eta][sub c] [yields] 2(K[sup +]K[sup -]) and [eta][sub c] [yields] [phi][phi] and determine the [eta][sub c] decay branching fraction ratios [Beta]([eta][sub c] [yields] 2(K[sup +]K[sup -]))/[Beta]([eta][sub c] [yields] K[bar K][pi]) = (2.3 [+-] 0.7 [+-] 0.6) x 10[sup -2] and [Beta]([eta][sub c] [yields] [phi][phi])/[Beta]([eta][sub c] [yields] K[bar K][pi]) = (5.5 [+-] 1.4 [+-] 0.5) x 10[sup -2].

Download or read book RARE B DECAYS AND DIRECT CP VIOLATION AT BABAR written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The search for rare B decays and direct CF violation at BABAR is described. The following measurements (based on integrated luminosities ranging from 56.4 to 81.9 fb[sup -1]) are summarized: the inclusive branching fractions and direct CF asymmetries of B[sup+][yields] h[sup+]h[sup -]H[sup+] (h=[pi], K), the exclusive branching fractions of B[sup+][yields] K[sup+][pi][sup -][pi][sup+] (where significant signals are observed in the B[sup+][yields] K*[sup 0](892)[pi][sup+], B[sup+][yields] f[sub 0](98)K[sup+], B[sup+][yields][chi][sub c0]K[sup+], B[sup+][yields][bar D][sup 0][pi][sup+] and B[sup+][yields] higher K*[sup 0][pi][sup+] channels), the branching fractions of B[sup+][yields][rho][sup 0][rho][sup+] and B[sup+][yields][rho][sup 0] K*[sup+], and finally, the branching fractions, the longitudinal components, and the direct CF asymmetries in B[yields][phi]K*.

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.

Download or read book Branching Fractions and CP Asymmetries in B H Hh written by Giovanni Punzi and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative branching fractions of B{sub d, s} {yields} h{sup +}h'{sup -} decays (where h, h' = K or {pi}) and direct CP asymmetry in B{sub d} {yields} K{sup +}{pi}{sup -} have been measured with 180 pb{sup -1} of data collected by the CDFII detector at the Tevatron collider. This includes the first BR measurement of a charmless B{sub s} {yields} PP decay (B{sub s} {yields} K{sup +}K{sup -}).

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 -])

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].

Download or read book Measurements of Branching Fractions in B K and B and Search for Direct CP Violation in B sup K sup 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 authors present measurements of branching fractions in the b → s{bar s}s penguin-dominated decays B →?K+ and B° →?K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine?(B+ →?K+) = (10.0{sub -0.8}{sup +0.9} ± 0.5) x 10−6 and?(B° →?K°) = (8.4{sub -1.3}{sup +1.5} ± 0.5) x 10−6. Additionally, they measure the CP-violating charge asymmetry?{sub CP}(B{sup ±} →?K{sup ±}) = 0.04 {+-} 0.09 {+-} 0.01, with a 90% confidence-level interval of [-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B+ →??+,?(B+ →??+)

Download or read book Measurement of Branching Fractions and CP violating Charge Asymmetries in B sup yields rho sup pi sup 0 and B sup yields rho sup 0 pi sup Decays and Search for B sup 0 yields rho sup 0 pi sup 0 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary measurements of branching fractions and CP-violating charge asymmetries in B-meson decays to[rho][pi]. The data sample comprises 89 million[Upsilon](4S)[yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factor at SLAC. They find the charge-averaged branching fractions[Beta](B[sup+][yields][rho][sup+][pi][sup 0])= (11.0[+-] 1.9(stat.)[+-] 1.9(syst.)) x 10[sup -6] and[Beta](B[sup+][yields][rho][sup 0][pi][sup+])= (9.3[+-] 1.0(stat.)[+-] 0.8(syst.)) x 10[sup -6]; they set a 90% confidence-level upper limit of[Beta](B[sup 0][yields][rho][sup 0][pi][sup 0])

Download or read book Search for Direct CP Violation in Quasi 2 Body Charmless B Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have searched for direct CP violation in quasi-two-body charmless B decays observed in a sample of about 45 million B mesons collected with the BABAR detector at the PEP-II collider. We measure the following charge asymmetries in decay: [Alpha][sub CP](B[sup [+-]] [yields] [eta][prime]K[sup [+-]]) = -0.11 [+-] 0.02, [Alpha][sub CP](B[sup [+-]] [yields] [omega][pi][sup [+-]]) = 0.01[sub -0.31][sup +0.29] [+-] 0.03, [Alpha][sub CP](B[sup [+-]] [yields] [phi]K[sup [+-]]) = -0.05 [+-] 0.20 [+-] 0.03, [Alpha][sub CP](B[sup [+-]] [yields] [phi]K*[sup [+-]]) = -0.43[sub -0.30][sup +0.36] [+-] 0.06, and [Alpha][sub CP](B[sup 0]/[bar B][sup 0] [yields] [phi]K*[sup 0]/[bar K]*[sup 0]) = 0.00 [+-] 0.27 [+-] 0.03.