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.

Download or read book An Amplitude Analysis of the Four Body Decay D 0 to K K pi pi and a Study on the Pi pi S Wave for the Decay D 0 to KS0pi pi written by Lauren Martin and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amplitude Analysis of the Decay D0 to K K pi0 written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 385 fb−1 of ee− collisions, they study the amplitudes of the singly Cabibbo-suppressed decay D° → K−K+?°. They measure the strong phase difference between the {bar D}° and D° decays to K*(892)+K− to be -35.5{sup o} ± 1.9{sup o}(stat) ± 2.2{sup o}(syst), and their amplitude ratio to be 0.599 ± 0.013(stat) ± 0.011(syst). They observe contributions from the K? and K−K+ scalar and vector amplitudes, and analyze their angular moments. They find no evidence for charged?, nor for higher spin states. They also perform a partial wave analysis of the K−K+ system in a limited mass range.

Download or read book An Amplitude Analysis of the Decay D0 at CDLEO c written by Jack B. Benton and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amplitude Analysis of B pm to pi pm K K Decays written by Roel Aaij and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amplitude Analysis of B0 to K pi pi0 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.

Download or read book An Amplitude Analysis of the Decay B Pi Pi Pi written by J. C. Chen and published by . This book was released on 2005 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a Dalitz-plot analysis of charmless B{sup {+-}} decays to the final state {pi}{sup {+-}}{pi}{sup {+-}}{pi}{sup {-+}} using 210 fb{sup -1} of data recorded by the BABAR experiment at {radical}s = 10.58 GeV. We measure the branching fractions {Beta}(B{sup {+-}} {yields} {pi}{sup {+-}}{pi}{sup {+-}}{pi}{sup {-+}}) = (16.2 {+-} 1.2 {+-} 0.9) x 10{sup -6} and {Beta}(B{sup {+-}} {yields} {rho}{sup 0}(770){pi}{sup {+-}}) = (8.8 {+-} 1.0 {+-} 0.6{sub -0.7}{sup +0.1}) x 10{sup -6}. Measurements of branching fractions for the quasi-two-body decays B{sup {+-}} {yields} {rho}{sup 0}(1450){pi}{sup {+-}}, B{sup {+-}} {yields} f{sub 0}(980){pi}{sup {+-}} and B{sup {+-}} f{sub 2}(1270){pi}{sup {+-}} are also presented. They observe no charge asymmetries for the above modes, and there is no evidence for the decays B{sup {+-}} {yields} {chi}{sub c0}{pi}{sup {+-}}, B{sup {+-}} {yields} f{sub 0}(1370){pi}{sup {+-}} and B{sup {+-}} {yields} {sigma}{pi}{sup {+-}}.

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.

Download or read book Study of the S wave K pi 2 Amplitude Using the Decay D 2 K pi pi written by and published by . This book was released on 2007 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work the S-wave component of the K[pi] amplitude from decay of D+ → K+[pi]+[pi]+ it is directly measured. The data come from the Fermilab E831/FOCUS experiment. The amplitude measurement is made using the partial wave analysis without any preliminary assumption about the nature of the S-wave component of the K[pi] system. The phase and magnitude of the S-wave amplitude are generic functions to be determined directly through the Dalitz plot fit. For the sake of comparison, our results the same decay is analyzed using the isobar model, which is the standard way to analyze the Dalitz plot. The data fit obtained with the partial wave analysis is better than the data fit from the isobar model. The phase variation with respect to the invariant mass K[pi] is compared with the measurement of the phase [Delta]$0\atop{I=1/2}$ (mK[pi]) from K[pi] → K[pi] scattering. The difference between both analysis is discussed considering: a difference in the composition of the isospin components I = 1/2 and I = 3/2 of the K[pi] system between D+ decay and the K[pi] → K[pi] scattering; and the final state interaction involving all particles from decay.

Download or read book Vector Tensor and Vector Vector Decay AmplitudeAnalysis of B0 to Phi K 0 written by and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We perform an amplitude analysis of the decays B° → [phi]K*2(1430)°, [phi]K*(892)°, and [phi](K[pi]){sub S-wave}° with a sample of about 384 million B{bar B} pairs recorded with the BABAR detector. The fractions of longitudinal polarization f{sub L} of the vector-tensor and vector-vector decay modes are measured to be 0.853{sub -0.069}{sup +0.061} ± 0.036 and 0.506 ± 0.040 ± 0.015, respectively. Overall, twelve parameters are measured for the vector-vector decay and seven parameters for the vector-tensor decay, including the branching fractions and parameters sensitive to CP-violation.

Download or read book Measuring the CP Violating Phase Angle 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:

Download or read book Measurement of the B sup 0 phi K sup 0 Decay Amplitudes written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With a sample of about 227 million B[bar B] pairs recorded with the BABAR detector at the PEP-II storage ring the authors perform a full angular analysis of the decay B[sup 0] --> [phi]K*[sup 0](892). They measure the branching fraction to be (9.2 [+-] 0.9 [+-] 0.5) x 10[sup 06] and determine the fractions of longitudinal and parity-odd transverse contributions as f[sub L] = 0.52 [+-] 0.05 [+-] 0.02 and F[sub [perpendicular]] = 0.22 [+-] 0.05 [+-] 0.02, respectively. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be [phi][sub [parallel]] = 2.34[sub -0.20][sup +0.23] [+-] 0.05 rad and [phi][sub [perpendicular]] = 2.47 [+-] 0.25 [+-] 0.05 rad, respectively. The authors measure five CP asymmetries which provide important limits on CP violation originating from new physics. They also observe the decay B[sup 0] --> [phi]K*[sup 0](1430).

Download or read book Measurement of the B phi K Decay Amplitudes written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a sample of about 227 million B{bar B} pairs recorded with the BABAR detector at the PEP-II storage ring the authors perform a full angular analysis of the decay B° --> [phi]K*°(892). They measure the branching fraction to be (9.2 ± 0.9 ± 0.5) x 10°6 and determine the fractions of longitudinal and parity-odd transverse contributions as f{sub L} = 0.52 ± 0.05 ± 0.02 and F{sub {perpendicular}} = 0.22 ± 0.05 ± 0.02, respectively. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be [phi]{sub {parallel}} = 2.34{sub -0.20}{sup +0.23} ± 0.05 rad and [phi]{sub {perpendicular}} = 2.47 ± 0.25 ± 0.05 rad, respectively. The authors measure five CP asymmetries which provide important limits on CP violation originating from new physics. They also observe the decay B° --> [phi]K*°(1430).

Download or read book Amplitude Analysis of the Decay D s to pi pi pi in the Experiment E831 FOCUS written by and published by . This book was released on 2005 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present in this thesis the Dalitz Plot analysis of the D{sub s} →?+?−?+ decay, with the data of the E831/FOCUS, that took data in 1996 and 1997. The masses and widhts of f0(980) and f0(1370) are free parametres of the fit on Dalitz Plot, objectiving to study in detail these resonances. After this analysis we present the Spectator Model study on the S wave in this decay. For this study we used the formalism developed by M. Svec [2] for scattering. We present the comparison between the Isobar Model, frequently used in Dalitz Plot analysis, and this formalism.

Download or read book Amplitude Analysis of the Charmless Decays of Charged B Mesons to the Final States K pi Pi Using the BaBar Detector written by Thomas Edward Latham 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 Time Dependent and Time Integrated Angular Analysis of B Phi Ks Pi0 and B Phi K Pi written by and published by . This book was released on 2008 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Time dependent Dalitz Plot Analysis of the Charmless Decay B0 K0 S Pi Pi at BABAR written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A time-dependent amplitude analysis of B° → K{sub S}°??− decays is performed in order to extract the CP violation parameters of f0(980)K{sub S}° and?°(770)K{sub S}° and direct CP asymmetries of K*+(892)?−. The results are obtained from the final BABAR data sample of (465 ± 5)106 B{bar B} decays, collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The time dependent CP asymmetry for f0(980)K{sub S}° and?°(770)K{sub S}° are measured to be S(f0(980)K{sub S}°) = -0.97 ± 0.09 ± 0.01 ± 0.01, and S(?°(770)K{sub S}°) = 0.67 ± 0.20 ± 0.06 ± 0.04, respectively. In decays to K*+(892)?− the direct CP asymmetry is found to be A{sub CP}(K*{sup ±}(892)?{sup {-+}}) = -0.18 ± 0.10 ± 0.04 ± 0.00. The relative phases between B° → K*+(892)?− and {bar B}° → K*−(892)?+, relevant for the extraction of the unitarity triangle angle?, is measured to be??(K*(892)?) = (34.9 ± 23.1 ± 7.5 {+-} 4.7){sup o}, where uncertainties are statistical, systematic and model-dependent, respectively. Fit fractions, direct CP asymmetries and the relative phases of different other resonant modes have also been measured. A new method for extracting longitudinal shower development information from longitudinally unsegmented calorimeters is also presented. This method has been implemented as a part of the BABAR final particle identification algorithm. A significant improvement in low momenta muon identification at BABAR is obtained.