Author: Roel AaijPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Measurement of CP Observables in B± → DK± and B± → Dπ± with D → K0SK±π∓ Decays
Author: Roel AaijPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Measurement of CP Observables in B±→DK∗± Decays Using Two- and Four-body D Final States
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement of CP Observables in B± → DK± and B± → Dπ± with Two- and Four-body D Decays
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement of CP Observables in B__ -]D_CPK__ Decays and Constraints on the CKM Angle Gamma
![Measurement of CP Observables in B__ -]D_CPK__ Decays and Constraints on the CKM Angle Gamma PDF](https://books.google.com/books/content/images/frontcover/64eXAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Using the entire sample of 467 million [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we perform a 'GLW' analysis of B{sup ±} 2!D{sup ±} decays, using decay modes in which the neutral D meson decays to either CP-eigenstates or non-CP-eigenstates. We measure the partial decay rate charge asymmetries for CP-even and CP-odd D final states to be A{sub CP+} = 0.25 ± 0.06 ± 0.02 and A{sub CP-} = -0.09 ± 0.07 ± 0.02, respectively, where the first error is the statistical and the second is the systematic uncertainty. The parameter A{sub CP+} is different from zero with a significance of 3.6 standard deviations, constituting evidence for direct CP violation. We also measure the ratios of the charged-averaged B partial decay rates in CP and non-CP decays, R{sub CP+} = 1.18 ± 0.09 ± 0.05 and R{sub CP-} = 1.07 {+-} 0.08 {+-} 0.04. We infer frequentist confidence intervals for the angle [gamma] of the (db) unitarity triangle, for the strong phase difference [delta]{sub B}, and for the amplitude ratio r{sub B}, which are related to the B− 2!D− decay amplitude by r{sub B}e{sup i({delta}{sub b-[gamma]})} = A(B− 2!{bar D}°K−)/A(B− 2!D°K°−). Including statistical and systematic uncertainties, they obtain 0.24
Measurement of CP Observables in B±→D(∗)K± and B±→D(∗)π± Decays
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement of CP Violation Observables and Parameters for the Decays $B{̂\pm}\to DK{̂*\pm}$
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
We study the decay B− → DK*− using a sample of 379 x 106?(4S) → B{bar B} events collected with the BABAR detector at the PEP-II B-factory. We perform a 'GLW' analysis where the D meson decays into either a CP-even (CP+) eigenstate (KK−,?+?−), CP-odd (CP- ) eigenstate (K{sub S}°?°, K{sub S}°?, K{sub S}°?) or a non-CP state (K−?+). We also analyze D meson decays into K+?− from a Cabibbo-favored {bar D}° decay or doubly suppressed D° decay ('ADS' analysis). We measure observables that are sensitive to the CKM angle?: the partial-rate charge asymmetries A{sub CP±}, the ratios R{sub CP±} of the B-decay branching fractions in CP± and non-CP decay, the ratio R{sub ADS} of the charge-averaged branching fractions, and the charge asymmetry A{sub ADS} of the ADS decays: A{sub CP+} = 0.09 ± 0.13 ± 0.06, A{sub CP-} = -0.23 ± 0.21 ± 0.07, R{sub CP+} = 2.17 ± 0.35 ± 0.09, R{sub CP-} = 1.03 ± 0.27 ± 0.13, R{sub ADS} = 0.066 ± 0.031 ± 0.010, and A{sub ADS} = -0.34 {+-} 0.43 {+-} 0.16, where the first uncertainty is statistical and the second is systematic. Combining all the measurements and using a frequentist approach yields the magnitude of the ratio between the Cabibbo-suppressed and favored amplitudes, r{sub B} = 0.31 with a one (two) sigma confidence level interval of [0.24, 0.38] ([0.17, 0.43]). The value r{sub B} = 0 is excluded at the 3.3 sigma level. A similar analysis excludes values of? in the intervals [0, 7]{sup o}, [55, 111]{sup o}, and [175, 180]{sup o} ([85, 99]{sup o}) at the one (two) sigma confidence level.
Measurement of CP Observables in B± → D(∗)K± and B± → D(∗)π± Decays Using Two-body D Final States
Author: Roel AaijPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Improved Measurement of CP Observables in B- to D0_CP K- Decays
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
We present a study of the decay B− 2!D{sub (CP)}°K− and its charge conjugate, where D{sub (CP)}° is reconstructed in both a non-CP flavor eigenstate and in CP (CP-even and CP-odd) eigenstates, based on a sample of 382 million [Upsilon](4S) 2!B{bar B} decays collected with the BABAR detector at the PEP-II ee− storage ring. We measure the direct CP asymmetries A{sub CP±} and the ratios of the branching fractions R{sub CP±}: A{sub CP+} = 0.27 ± 0.09(stat) ± 0.04(syst), A{sub CP-} = -0.09 ± 0.09(stat) ± 0.02(syst), R{sub CP+} = 1.06 ± 0.10(stat) ± 0.05(syst), R{sub CP-} = 1.03 {+-} 0.10(stat) {+-} 0.05(syst). These results will help to better constrain the gamma phase parameter of the Cabibbo-Kobayashi-Maskawa quark mixing matrix.
Measurement of CP-observables with B− [right Arrow] D0K*− Decays
![Measurement of CP-observables with B− [right Arrow] D0K*− Decays PDF](https://books.google.com/books/content/images/frontcover/TWTDjwEACAAJ?fife=w80-h100)
Author: Quincy WongPublisher:
ISBN:
Category : B mesons
Languages : en
Pages : 166
Book Description
Abstract: Using a sample of 379 million [Upsilon](4S) [right arrow] B anti-B events collected with the BABAR detector at the PEP-II B-factory, I study decays of B− [right arrow] D0K*− where K*− [right arrow] K0s[pi]−, K0s [right arrow] [pi][pi]− and D0 decays into K[pi] and CP-eigenstates. Both CP+ (KK−, [pi][pi]−) and CP- final states (K0s[pi]0, K0s[phi], K0s[omega]) are included. Using the Gronau-London-Wyler (GLW) and Atwood Dunietz-Soni (ADS) methods, CP-observables which are sensitive to the CKM angle [gamma] are measured.
Flavour-tagged Measurement of CP Observables in B 0 S -> D∓ S K± Decays with the LHCb Experiment
Author: Ulrich Paul EitschbergerPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
