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Measurement Of The Branching Fraction And Cp Asymmetries In B Meson Decays Into Light Pseudo Scalar Mesons
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Book Synopsis Measurement of the Branching Fraction and CP Asymmetries in B Meson Decays Into Light Pseudo-scalar Mesons by : Mark T. Allen
Download or read book Measurement of the Branching Fraction and CP Asymmetries in B Meson Decays Into Light Pseudo-scalar Mesons written by Mark T. Allen and published by . This book was released on 2007 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Standard Model (SM) of particle physics, the charged-current couplings of the quark sector are described by the Cabibho-Kobayashi-Maskawa (CKM) matrix elements Vqq' . The consistency of multiple measurements of the sides and angles of the CKM Unitarity Triangle provides a stringent test of the SM, and also provides constraints on non-SM physics. The CKM angle alpha can be measured from the interference between B0 → pi + pi- decays with and without B 0 ↔ B¯0 mixing, in combination with the isospin related decays B+ → pi + pi- and B0 → pi 0 pi0. The B → Kpi system also exhibits interesting CP-violating features, including direct CP violation in B0 → K+pi- decays. Sum rules derived from U-spin symmetry and parameters from the B → pipi system relate the branching fraction and charge asymmetry of B +/- → K+/-pi 0 decays to other decays in the Kpi system. Based on a sample of 383 x 106 U (4S) → BB¯ decays, we report updated measurements of the branching fraction for B 0 → pi0pi0 and the time-integrated CP asymmetry, Cp0p0 . We also measure the branching fractions for B +/- → h+/-pi 0 (h+/- = pi+/- , K+/-) and the corresponding charge asymmetries Ah+/-p 0 . We find the branching ratios and asymmetries: B (B0 → pi0pi 0) = (1.47 +/- 0.25 +/- 0.12) x 10-6, B (B+/- → pi+/- pi0 = (5.02 +/- 0.46 +/- 0.29) x 10 -6, B (B+/- K +/-pi0) = (13.56 +/- 0.56 +/- 0.68) x 10-6, Cp0p0 = -0.49 +/- 0.35 +/- 0.04, Ap+/-p 0 = 0.03 +/- 0.08 +/- 0.01, and AK+/-p 0 = 0.030 +/- 0.039 +/- 0.010. Finally, we present bounds on the CKM angle alpha using isospin relations.
Book Synopsis Measurements of Branching Fractions and CP Asymmetries in Decays of a B Meson to Two Phi Mesons and a K Meson by : Hulya Atmacan
Download or read book Measurements of Branching Fractions and CP Asymmetries in Decays of a B Meson to Two Phi Mesons and a K Meson written by Hulya Atmacan and published by . This book was released on 2010 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the decays B[superscript +] [arrow right] [straight phi][straight phi] K [superscript +] and B[superscript o] [arrow right] [straight phi][straight phi] K [superscript o] using about 464 million BB[superscript -] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We report the branching fractions of the decays B [superscript +] [arrow right] [straight phi][straight phi] K[superscript +] and B[superscript o] [arrow right] [straight phi][straight phi] K[superscript o], and CP asymmetry in the charged B mode for [straight phi][straight phi] invariant mass below 2.85 GeV/ c 2 : [Special characters omitted.] Additionally, we measure the direct CP asymmetry in B[superscript +] [arrow right] [straight phi][straight phi] K [superscript +] for [straight phi][straight phi] invariant mass within the [eta][subcript c] resonance region ([2.94-3.02] GeV/ c 2): [Special characters omitted.] No direct CP asymmetry is observed both below the [eta][subcript c] and within the [eta][subcript c] resonance, as expected within the Standard Model. In each case the uncertainties are statistical and systematic, respectively.
Book Synopsis Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K[sup 0]. by :
Download or read book Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K[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 measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K[sup 0]. The results are based on a data sample of approximately 88 million [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.
Book Synopsis Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector by : Jinwei Wu
Download or read book Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector written by Jinwei Wu and published by . This book was released on 2005 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of CP-violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector by : Morris Nicholas Danielson
Download or read book Measurements of CP-violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector written by Morris Nicholas Danielson and published by . This book was released on 2005 with total page 286 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 Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K° by :
Download or read book Measurements of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Charmless Two-Body States Containing a K° 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 present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K°. The results are based on a data sample of approximately 88 million [Upsilon](4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.
Book Synopsis Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector by :
Download or read book Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a measurement of CP asymmetries and branching fractions 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?(4S) → B{bar B} decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B factory located at the Stanford Linear Accelerator Center. A fit to kinematic, topological, and particle identification information measures the charge-averaged branching fractions?(B° →??−) = (4.7 ± 0.6 ± 0.2) x 10−6 and?(B° → K+?−) = (17.9 ± 0.9 ± 0.7) x 10−6; the 90% confidence level upper limit?(B° → K+K−)
Book Synopsis Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Meson Decays by :
Download or read book Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Meson Decays written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With a sample of approximately 89 million BB pairs collected with the BABAR detector, we perform a search for B meson decays into pairs of charmless vector mesons ([phi], [rho], and K*). We measure the branching fractions, determine the degree of longitudinal polarization, and search for CP violation asymmetries in the processes B[sup+][yields][phi]K*[sup+], B[sup 0][yields][phi]K*[sup 0], B[sup+][yields][rho][sup 0]K*[sup+], and B[sup+][yields][rho][sup 0][rho][sup+]. We also set an upper limit on the branching fraction for the decay B[sup 0][yields][rho][sup 0][rho][sup 0].
Book Synopsis Branching Fraction and P-violation Charge Asymmetry Measurements for B-meson Decays to Eta K+-, Eta Pi+-, Eta'K, Eta' Pi+-, Omega K, and Omega Pi+- by :
Download or read book Branching Fraction and P-violation Charge Asymmetry Measurements for B-meson Decays to Eta K+-, Eta Pi+-, Eta'K, Eta' Pi+-, Omega K, and Omega Pi+- written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Rho And Pion Final State with the BABAR Detector by : Jinwei Wu
Download or read book Study of Branching Fractions and CP-Violating Asymmetries in B Meson Decays to Rho And Pion Final State with the BABAR Detector written by Jinwei Wu and published by . This book was released on 2006 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of branching fractions and CP-violating asymmetries in B-meson decays to {rho}{sup +}{pi}{sup 0}, {rho}{sup 0}{pi}{sup +} and {rho}{sup 0}{pi}{sup 0}. The data sample comprises 89 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. We find the charge-averaged branching fractions {Beta}(B{sup +} {yields} {rho}{sup +}{pi}{sup 0}) = (10.9 {+-} 1.9(stat) {+-} 1.9(syst)) x 10{sup -6} and {Beta}(B{sup 0} {yields} {rho}{sup 0}{pi}{sup +}) = (9.5 {+-} 1.1 {+-} 0.9) x 10{sup -6}, and we set a 90% confidence-level upper limit {Beta}(B{sup 0} {yields} {rho}{sup 0}{pi}{sup 0})
Book Synopsis Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector by : Amir Farbin
Download or read book Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector written by Amir Farbin and published by . This book was released on 2003 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exclusive Rare B Decays to Two Light Pseudoscalar Mesons by : Petr Borisovich Gaidarev
Download or read book Exclusive Rare B Decays to Two Light Pseudoscalar Mesons written by Petr Borisovich Gaidarev and published by . This book was released on 1997 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Branching Fractions and Direct CP Violation in B -] PP(PV) Decays by :
Download or read book Branching Fractions and Direct CP Violation in B -] PP(PV) Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: I present the results of searches for B meson decays into two charmless mesons. I take into account final states made up of two pseudo-scalar (PP) or one pseudo-scalar and one vector (PV). The measurements use the data samples collected and analyzed by the B-factory experiments at the [Upsilon](4S) resonance energy: BABAR, Belle and CLEO.
Book Synopsis Measurement of Branching Fractions and CP-ViolatingCharge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKMAngle Gamma by :
Download or read book Measurement of Branching Fractions and CP-ViolatingCharge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKMAngle Gamma written by and published by . This book was released on 2006 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: In summary, the authors have measured branching fractions, upper limits, and charge asymmetries for all B meson decays to D{sup (*)} {bar D}{sup (*)}.
Book Synopsis Branching Fractions and CP Asymmetries in Two-body Nonleptonic Charmless B-hadron Decays by : Andreas Warburton
Download or read book Branching Fractions and CP Asymmetries in Two-body Nonleptonic Charmless B-hadron Decays written by Andreas Warburton and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative branching fractions of B{sub d, s}{sup 0} {yields} h{sup +}h'{sup -} decays (where h, h' = K or {pi}) and the direct Cp asymmetry A{sub CP} in the B{sub d}{sup 0} {yields} K{sup +}{pi}{sup -} mode are measured with 179 {+-} 11 pb {sup -1} of data collected using the CDF II detector at the Fermilab Tevatron p{bar p} collider. The first branching-fraction measurement of a B{sub s}{sup 0} meson to two pseudoscalars, {Beta}(B{sub s}{sup 0} {yields} K{sup +} K{sup -}), and a search for the baryon mode {Lambda}{sub b}{sup 0} {yields} p{sup +} h{sup -} are also presented, in addition to branching-fraction limits on the rare channels B{sub s}{sup 0} {yields} K{sup +} {pi}{sup -}, B{sub d}{sup 0} {yields} K{sup +}K{sup -}, and B{sub s}{sup 0} {yields} {pi}{sup +}{pi}{sup -}.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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