Download or read book Measurement of the CKM Angles Gamma And 2 Beta Gamma at B Factories written by Jean-Pierre Lees and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: On behalf of the BABAR and Belle collaborations, the authors report on the measurement of the angle {gamma} and of the sum of angles 2{beta} + {gamma} of the Unitarity Triangle.

Download or read book Measurement of the Gamma Angle at the B Factories written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The methods to measure the angle[gamma] of the CKM unitarity triangle at the B factories are presented. Special emphasis is given to the measurement of sin(2[beta] + [gamma]) using the B° → D*{sup {+-}} [pi]{sup {-+}} decays which has already produced results providing an interesting constraint in the [rho] - [eta] plane. Various methods using B → DK decays are also presented.

Download or read book Measurements of the CKM Angle Phi3 gamma written by and published by . This book was released on 2007 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a review on the measurements of the CKM angle [gamma] ([phi]3)1 as performed by the BABAR and Belle experiments at the asymmetric-energy ee− B factories colliders PEP-II and KEKB. These measurements are using either charged or neutral B decays. For charged B decays the modes {tilde D}°K−, {tilde D}*°K−, and {tilde D}°K*− are employed, where {tilde D}° indicates either a D° or a {bar D}° meson. Direct CP violation is exploited. It is caused by interferences between V{sub ub} and V{sub cb} accessible transitions that generate asymmetries in the final states. For these decays various methods exist to enhance the sensitivity to the V{sub ub} transition, carrying the weak phase [gamma]. For neutral B decays, the modes D{sup (*){+-}}[pi]{sup {-+}} and D{sup {+-}}[rho]{sup {-+}} are used. In addition to the V{sub ub} and V{sub cb} interferences, these modes are sensitive to the B°-{bar B}° mixing, so that time dependent analyses are performed to extract sin(2[beta] + [gamma]). An alternative method would use the lower branching ratios decay modes {tilde D}{sup (*)0}{bar K}{sup (*)0} where much larger asymmetries are expected. The various available methods are mostly ''theoretically clean'' and always free of penguins diagrams. In some cases a high sensitivity to [gamma] is expected and large asymmetries may be seen. But these measurements are always experimentally difficult as one has to face with either low branching ratios, or small asymmetries, or additional technical/theoretical difficulties due to Dalitz/SU(3) and re-scattering models needed to treat/estimate nuisance parameters such as unknown strong phases and the relative magnitude of the amplitude of the interfering ''V{sub ub}'' transitions. Thus at the present time only a relatively limited precision on [gamma] can be extracted from these measurements. The current world average is [gamma] = (7826{sup +19}){sup o} [1]. For other methods and long term perspectives, as discussed in details, the reader is invited to consult the proceedings of the recent CKM workshop that was held in Nagoya (Japan) in December 2006 [2].

Download or read book Measurement of Gamma and 2 Beta Gamma written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the initial measurements of the angle [gamma] and the sum of angles 2[beta] +[gamma] of the Unitarity Triangle. When compared with indirect information on the value of [gamma] from other measurements of CKM parameters, the measurement of these angles will provide a precise test of Standard Model predictions, as statistics increase. There are several methods for directly measuring [gamma] and 2[beta] +[gamma]. We report on the status of each of these techniques, and the resulting constraints on the values of these angles.

Download or read book Measurements of the CKM Angle phi 1 beta at the B Factories written by and published by . This book was released on 2013 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of the CKM Angle Gamma at BaBar written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a short review of the measurements of the CKM angle [gamma] performed by the BABAR experiment. We focus on methods using charged B decays, which give a direct access to [gamma] and provide the best constraints so far.

Download or read book Measurement of the CKM Angle Gammma With B D K0 S Pi Pi K Decays in BaBar written by and published by . This book was released on 2007 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the measurement of the Cabibbo-Kobayashi-Maskawa angle? through a Dalitz analysis of neutral D decays to K-short?−? in the processes B{sup {minus_plus}} → D(*)K{sup {minus_plus}} and B{sup {minus_plus}} → DK*{sup {minus_plus}}, D* → D?°, D?, with the BaBar detector at the SLAC PEP-II e+e− asymmetric-energy collider.

Download or read book Improved Measurement of the CKM Angle Gamma in B to D K Decays with a Dalitz Plot Analysis of D Decays to K S0 Pi Pi and K S0 K K written by and published by . This book was released on 2008 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on an improved measurement of the Cabibbo-Kobayashi-Maskawa CP-violating phase? 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 K8{sup {-+}} → K{sub S}°?{sup {-+}}. Using a sample of 383 million B{bar B} pairs collected by the BABAR detector, we measure? = (76 ± 22 ± 5± 5){sup o} (mod 180{sup o}), where the first error is statistical, the second is the experimental systematic uncertainty and the third reflects the uncertainty on the description of the Dalitz plot distributions. The corresponding two standard deviation region is 29{sup o}

Download or read book Measurement of the CKM Angle Gamma in B0 to Anti D0 D0 K 0 With a Dalitz Analysis of D0 to K S Pi Pi written by and published by . This book was released on 2008 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the angle? of the Unitarity Triangle with a Dalitz analysis of neutral D decays to K{sub S}??− from the processes B° → {bar D}°(D°)K*° ({bar B}° → D°({bar D}°){bar K}*°) with K*° → K+?− ({bar K}*° → K−?+). Using a sample of 371 x 106 B{bar B} pairs collected with the BABAR detector at PEP II, they measure the angle? as a function of r{sub S}, the magnitude of the average ratio between b → u and b → c amplitudes. Combining this result with the available information on r{sub S}, they obtain? = (162 ± 56){sup o} or (342 ± 56){sup o} and r{sub S}

Download or read book Measurement of the CKM Angle Gamma at BaBar written by V. Tisserand and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the results of the measurements employed by the BABAR Collaboration, to determine the value of the Cabibbo-Kobayashi-Maskawa (CKM) CP-violating phase {gamma} ({triple_bond} arg [-V{sub ud}V*{sub ub}/V{sub cd}V*{sub cb}]). These measurements are based on the studies performed with the charged B-decays B{sup -} {yields} {tilde D}{sup 0} K{sup -}, B{sup -} {yields} {tilde D}*{sup 0} K*{sup -}, where {tilde D}{sup 0} indicates either a D{sup 0} or a {bar D}{sup 0} meson. A sample of about 230 million B{bar B} pairs collected by the BABAR detector [1], at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at SLAC, is used.

Download or read book Measurements of the CKM Angle Gamma with BaBar written by and published by . This book was released on 2013 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the CKM Angle Gamma in B to D K Decays With the BaBar Detector written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the measurement of the CKM angle [gamma] in B{sup {+-}} → DK{sup {+-}} decays with the BABAR detector. A general overview of different methods of analysis and a critical discussion of the most sensitive methods are presented here.

Download or read book Measurement of CKM angle gamma with Charmed B0 Meson Decays written by Max Arjen Baak and published by . This book was released on 2007 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the CKM Angles Alpha and Gamma at the BaBar Experiment written by and published by . This book was released on 2007 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present recent measurements of the CKM angles alpha and gamma using data collected by the BaBar detector at the PEP-II asymmetric-energy ee− collider at the Stanford Linear Accelerator Center. In addition to constraints on alpha from the decays B0 2!?+?−, B0 2!?+?− and B0 2!?+?−, we also report the first measurement of time-dependent CP asymmetries in the decay B0 2!a1+(1260)?−. We present measurements of gamma in B+ 2!D(*)0 K+ decays using a Dalitz analysis in the modes D° 2!Ks?+?− and D° 2!?+?−?°. We present recent measurements of the CKM angles alpha and gamma using data collected by the BaBar detector at the PEP-II asymmetric-energy e+e− collider at the Stanford Linear Accelerator Center. In addition to constraints on alpha from the decays B0 ->?+?−, B0 2!?+?− and B0 2!?+?−, we also report the first measurement of time-dependent CP asymmetries in the decay B0 2!a1+(1260)?−. We present measurements of gamma in B+ 2!D(*)0 K+ decays using a Dalitz analysis in the modes D° 2!Ks?+?− and D° 2!?+?−?°.

Download or read book CKM Unitarity Angles Alpha Phi 2 And Gamma Phi 3 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The author reports on the experimental studies of the CKM unitarity angles [alpha]([phi]2) and [gamma]([phi]3) with emphasis on recent measurements by the Bell and Babar experiments at the B-factory accelerators.

Download or read book Gammasphere Physics Proceedings Of The Workshop written by M A Deleplanque and published by World Scientific. This book was released on 1996-09-20 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 'Workshop on Gammasphere Physics' report on forefront physics done with Gammasphere and other large gamma-ray detector arrays around the world.With the unprecedent capabilities of the new arrays high precision measurements provide new understanding of the properties of superdeformed nuclei, such as new symmetries and identical bands. For the first time links were found between superdeformed states and normal states in the mass 190-region.

Download or read book Yet Another Way to Measure Gamma written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We show that the CKM phase 2[beta]+P[gamma] can be extracted from measurement of the time dependent rates in the decays[bar B][sup 0][yields] D[sup (*)[+-]] M[sup[-+]], where M= a[sub 0], [pi](1300), b[sub 1], a[sub 2], [pi][sub 2], [rho][sub 3]. These channels have a large asymmetry between decays of[bar B][sup 0] and B[sup 0] into the same final state. Even though the branching ratios are small, their sensitivity to[gamma] can be competitive with decays into D[sup (*)] and ([pi], [rho], a[sub 1]).