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Amplitude Analysis Of B0 To K Pi Pi0 And Evidence Of Direct Cp Violation In B To K Pi Decays
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Book Synopsis Amplitude Analysis of B0 to K ̂pi-̂pi0̂ and Evidence of Direct CP Violation in B to K*̂ Pi Decays by :
Download or read book Amplitude Analysis of B0 to K ̂pi-̂pi0̂ and Evidence of Direct CP Violation in B to K*̂ Pi Decays written by and published by . This book was released on 2011 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: We analyze the decay B° → K+ ?− ?° with a sample of 454 million B{bar B} events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, and extract the complex amplitudes of seven interfering resonances over the Dalitz plot. These results are combined with amplitudes measured in B° → K°{sub s}?+?− decays to construct isospin amplitudes from B° → K{sup *}? and B° → ?K decays. We measure the phase of the isospin amplitude ?{sub 3/2}, useful in constraining the CKM unitarity triangle angle ? and evaluate a CP rate asymmetry sum rule sensitive to the presence of new physics operators. We measure direct CP violation in B° → K{sup *+}?− decays at the level of 3 ? when measurements from both B° → K+?−?° and B° → K°{sub s}?+?− decays are combined.
Book Synopsis Amplitude Analysis of the Decay B0-]K+pi-pi0 by :
Download or read book Amplitude Analysis of the Decay B0-]K+pi-pi0 written by and published by . This book was released on 2008 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report an updated amplitude analysis of the charmless hadronic decays of neutral B mesons to K?−?°. With a sample of 454 million?(4S) → B{bar B} decays collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the magnitudes and phases of the intermediate resonant and nonresonant amplitudes for B° and B° decays and determine the corresponding CP-averaged fit fractions and charge asymmetries.
Book Synopsis Measurements of Direct CP Violation and Constraint on the CKM Triangle in B-]K*pi Decays by : Andrew Phillips Wagner
Download or read book Measurements of Direct CP Violation and Constraint on the CKM Triangle in B-]K*pi Decays written by Andrew Phillips Wagner and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We constrain the apex of the Cabibbo-Kobayashi-Maskawa unitarity triangle with measurements of B-> K*pi amplitudes from analyses of B0-> K+pi-pi0 and B0-> K_Spi+pi- decays. This constraint is consistent with the world average. The B0-> K+pi-pi0 decay mode is reconstructed from a sample of 454 million B0B0bar events collected by the BABAR detector at SLAC. We measure direct CP violation in B0-> K*+pi- decays at the level of 3 sigma when measurements from both B0-> K+pi-pi0 and B0-> K_Spi+pi- decays are combined.
Book Synopsis B Physics And Cp Violation: Bcp4 - Proceedings Of The International Workshop by : T Ohshima
Download or read book B Physics And Cp Violation: Bcp4 - Proceedings Of The International Workshop written by T Ohshima and published by World Scientific. This book was released on 2001-09-25 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers the first strong evidence of the existence of CP violation in neutral B decays extracted from sophisticated B factories in the US and Japan. It also holds out the expectation of rare B decays and D, K physics in the near future. In addition, new physics beyond the Standard Model is described. Both experimental and theoretical points of view are given.
Book Synopsis Measurements of Direct CP Violation and Constraints on the CKM Triangle in B 2!K*[pi] Decays by :
Download or read book Measurements of Direct CP Violation and Constraints on the CKM Triangle in B 2!K*[pi] Decays written by and published by . This book was released on 2010 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We constrain the apex of the Cabibbo-Kobayashi-Maskawa unitarity triangle with measurements of B → K*[pi] amplitudes from analyses of B0 → K+[pi]-[pi]0 and B0 → KS[pi]+[pi]- decays. This constraint is consistent with the world average. The B0 → K+[pi]-[pi]0 decay mode is reconstructed from a sample of 454 million B0$\bar{B}$ 0 events collected by the BABAR detector at SLAC. We measure direct CP violation in B0 → K*+[pi]- decays at the level of 3[sigma] when measurements from both B0 → K+[pi]-[pi]0 and B0 → KS[pi]+[pi]- decays are combined.
Download or read book Deutsche Grundkarte written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measuring the CP Violating Phase Angle Γ by an Amplitude Analysis of the Decays B[+-] → (K[-+] Pi[+-] Pi- Pi+) D K[+-] by : Callum Lister
Download or read book Measuring the CP Violating Phase Angle Γ by an Amplitude Analysis of the Decays B[+-] → (K[-+] Pi[+-] Pi- Pi+) D K[+-] written by Callum Lister and published by . This book was released on 2010 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of CP Violation in Dalitz-plot Analyses of B0 to K K-KS, B to K K-K, and B to KSKSK. by :
Download or read book Study of CP Violation in Dalitz-plot Analyses of B0 to K K-KS, B to K K-K, and B to KSKSK. written by and published by . This book was released on 2012 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amplitude Analysis and Measurement of the Time-dependent CP Asymmetry of B0 to KsKsKs Decays by :
Download or read book Amplitude Analysis and Measurement of the Time-dependent CP Asymmetry of B0 to KsKsKs Decays written by and published by . This book was released on 2012 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process B° → K{sub S}°K{sub S}°K{sub S}° obtained using 468 x 106 B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B° and {bar B}° decays. We measure the total inclusive branching fraction?(B° → K{sub S}°K{sub S}°K{sub S}°) = (6.19 ± 0.48 ± 0.15 ± 0.12) x 10−6, where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f0(980), f0(1710), and f2(2010). Their respective product branching fractions are measured to be (2.70{sub -1.19}{sup +1.25} ± 0.36 ± 1.17) x 10−6, (0.50{sub -0.24}{sup +0.46} ± 0.04 ± 0.10) x 10−6, and (0.54{sub -0.20}{sup +0.21} ± 0.03 ± 0.52) x 10−6. Additionally, we determine the mixing-induced CP-violation parameters to be S = -0.94{sub -0.21}{sup +0.24} ± 0.06 and C = -0.17 ± 0.18 ± 0.04, where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation.
Book Synopsis Search for CP Violation Through an Amplitude Analysis of D°→K+K−[pi]+[pi]− Decays at LHCb by : Maxime Schubiger
Download or read book Search for CP Violation Through an Amplitude Analysis of D°→K+K−[pi]+[pi]− Decays at LHCb written by Maxime Schubiger and published by . This book was released on 2018 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mots-clés de l'auteur: particle physics ; LHCb ; amplitude analysis ; CP violation ; charm decays ; magnetic field.
Book Synopsis Amplitude Analysis of the B+ to Phi K*+(892) Decay by :
Download or read book Amplitude Analysis of the B+ to Phi K*+(892) Decay written by and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We perform an amplitude analysis of B{sup ±} 2!{var_phi}(1020)K*(892){sup ±} decay with a sample of about 384 million B{bar B} pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal f{sub L} and parity-odd transverse f{sub {perpendicular}} amplitudes, branching fraction, strong phases, and six parameters sensitive to CP-violation. We use the dependence on the K[pi] invariant mass of the interference between the J{sup P} = 1− and 0 K[pi] components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of f{sub L} = 0.49 ± 0.05 ± 0.03, f{sub {perpendicular}} = 0.21 {+-} 0.05 {+-} 0.02, and the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source.
Book Synopsis Evidence for Direct CP Violation in the Measurement of the Cabibbo-Kobayashi-Maskawa Angle Gamma with B-+ to D(*) K(*)-+ Decays by :
Download or read book Evidence for Direct CP Violation in the Measurement of the Cabibbo-Kobayashi-Maskawa Angle Gamma with B-+ to D(*) K(*)-+ Decays written by and published by . This book was released on 2011 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle? through a Dalitz plot analysis of neutral D meson decays to K{sub S}°??− and K{sub S}° K+K− produced in the processes B{sup {-+}} → DK{sup {-+}}, B{sup {-+}} → D* K{sup {-+}} with D* → D?°, D?, and B{sup {-+}} → DK*{sup {-+}} with K*{sup {-+}} → K{sub S}°?{sup {-+}}, using 468 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC. We measure? = (68 ± 14 ± 4 ± 3){sup o} (modulo 180{sup o}), where the first error is statistical, the second is the experimental systematic uncertainty and the third reflects the uncertainty in the description of the neutral D decay amplitudes. This result is inconsistent with? = 0 (no direct CP violation) with a significance of 3.5 standard deviations.
Book Synopsis Measurement of CP Asymmetries in B0 to Phi K0 and B0 to K+K-Ks Decays by :
Download or read book Measurement of CP Asymmetries in B0 to Phi K0 and B0 to K+K-Ks Decays written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the time-dependent CP asymmetry parameters in B° 2!KK−K° based on a data sample of approximately 227 million B-meson pairs recorded at the [Upsilon](4S) resonance with the BABAR detector at the PEP-II B-meson Factory at SLAC. We reconstruct two-body B° decays to [phi](1020)K{sub s}° and [phi](1020)K{sub L}°, and the three-body decay KK−K{sub s}° with [phi](1020)K{sub s}° excluded. For the B° 2![phi]K° decays, they measure sin 2[beta]{sub eff}([phi]K°) = +0.50 ± 0.25(stat){sub -0.04}{sup +0.07}(syst). The B° 2!K+K−K{sub s}° decays are dominated by K+K− S-wave, as determined from an angular analysis; they measure sin 2[beta]{sub eff} (K+K−K{sub s}°) = +0.55 ± 0.22(stat) ± 0.04(syst) ± 0.11(CP), where the last error is due to the uncertainty in the fraction of CP-even contributions to the decay amplitude. We find no evidence for direct CP violation.
Download or read book CP Violation in K and B Decays written by and published by . This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author reviews basic aspects of the phenomenology of CP violation in the decays of K and B mesons. In particular he discusses the commonly used classification of CP violation--CP violation in the mass matrix, in the interference of mixing with decay, and in the decay amplitude itself--and the related notions of direct and indirect CP violation. These concepts are illustrated with explicit examples. The author also emphasizes the highlights of this field including the clean observables B(K{sub L} → [pi]°[nu]{anti {nu}}) and A{sub CP} (B → J/[Psi]K{sub S}). The latter quantity serves to demonstrate the general features of large, mixing induced CP violation in B decays.
Book Synopsis Study of CP Violation in Dalitz-plot Analyses of B-Meson Decays to Three Kaons by : Brian Edward Lindquist
Download or read book Study of CP Violation in Dalitz-plot Analyses of B-Meson Decays to Three Kaons written by Brian Edward Lindquist and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents studies of CP violation in the decays B0--> K+K-Ks, B+--> K+K-K+, and B+--> KsKsK+, using a Dalitz plot amplitude analysis. These studies are based on data from the BaBar experiment at PEP-II at SLAC. Among the significant results are the world's most precise measurements of time-dependent CP-violation in B0--> phi Ks and direct CP violation in B+--> phi K+. The latter is measured to deviate from zero by 2.8 standard deviations, in tension with the Standard Model expectation. We also study the resonant and nonresonant substructure of B--> KKK decays, and find evidence against the previously hypothesized resonance dubbed the "fX(1500)."
Book Synopsis Measurement of CP Violation in B0 to [Phi]K0, and of Branching Fraction and CP Violation in B0 2!F0(980) K$0\atop{S}$ by :
Download or read book Measurement of CP Violation in B0 to [Phi]K0, and of Branching Fraction and CP Violation in B0 2!F0(980) K$0\atop{S}$ written by and published by . This book was released on 2006 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors measure the time-dependent CP asymmetry parameters in B0 2!K+K-K0 based on a data sample of approximately 277 million B-meson pairs recorded at the Y(4S) resonance with the BABAR detector at the PEP-II B-meson Factory at SLAC. They reconstruct two-body B0 decays to [Phi](1020)K$0\atop{S}$ and [Phi](1020)K$0\atop{L}$. Using a time-dependent maximum-likelihood fit, they measure sin2[beta]eff([Phi]K0) = 0.48 ± 0.28 ± 0.10, and C([Phi]K0) = 0.16 ± 0.25 ± 0.09, where the first error is statistical, and the second is systematic. They also present measurements of the CP-violating asymmetries in the decay B0 2!f0(2![pi]+[pi]- )K$0\atop{S}$. The results are obtained from a data sample of 209 x 106 Y(4S) 2!B$\bar{B}$ decays, also collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-dependent maximum-likelihood fit they measure the mixing-induced CP violation parameter S(f0(980)K$0\atop{S}$) = - sin 2[beta]efff0(980)K$0\atop{S}$ = -0.95$+0.32\atop{-0.23}$ ± 0.10 and the direct CP violation parameter C(f0(980)K$0\atop{S}$) = - 0.24 ± 0.31 ± 0.15, where the first errors are statistical and the second systematic. Finally, they present a measurement of the branching fraction of the decay B0 2!f0(2![pi]+[pi]- )K$0\atop{S}$. From a time-dependent maximum likelihood fit to a data sample of 123 x 106 Y(4S) 2!B$\bar{B}$ decays they find 93.6 ± 13.6 ± 6.4 signal events corresponding to a branching fraction of [beta](B0 2!f0(980)(2![pi]+[pi]- )K0) = (6.0 ± 0.9 ± 0.6 ± 1.2) x 10-6, where the first error is statistical, the second systematic, and the third due to model uncertainties.
Book Synopsis Observation of Direct CP Violation in B° --] Kpi− Decays by :
Download or read book Observation of Direct CP Violation in B° --] Kpi− Decays 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 an updated search for direct CP violation in the decay B° --> Kpi−. Using 227 million [Upsilon](4S) --> B{bar B} decays collected with the BaBar detector at the PEP-II asymmetric-energy Ee− collider at SLAC, the authors observe a total signal yield of n(K-pi+) + n(K+pi−) = 1606 ± 51 decays and measure the asymmetry [n(K−pi+)-n(K+pi−)]/[n(K−pi+)+n(K+pi−)] = 0.133 ± 0.030(stat) ± 0.009(syst). This measurement establishes direct CP violation in the B° meson system at the level of 4.2 standard deviations.
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