Measurement Of The Ckm Angle Gammma With B D K0 S Pi Pi K Decays In Babar

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Measurement Of The Ckm Angle Gammma With B D K0 S Pi Pi K Decays In Babar

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Ckm Angle Gammma With B D K0 S Pi Pi K Decays In Babar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

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.

Physics Letters

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Author :
language : en
Publisher:
Release Date : 2001

Physics Letters written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Nuclear physics categories.

Measurement Of The Ckm Angle Gamma In B To D K Decays With The Babar Detector

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Author :
language : en
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Release Date : 2007

Measurement Of The Ckm Angle Gamma In B To D K Decays With The Babar Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

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.

Measurement Of The Ckm Angles Alpha And Gamma At The Babar Experiment

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Author :
language : en
Publisher:
Release Date : 2004

Measurement Of The Ckm Angles Alpha And Gamma At The Babar Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The primary objective of the BABAR Experiment is to test the Standard Model explanation of CP violation in weak decays by over-constraining the CKM Unitarity Triangle. This includes the measurement of all three angles of the triangle. Although precise measurements of the angle [beta] have been obtained using B decays to charmonium states, the remaining angles, [alpha] and [gamma], pose greater experimental challenges. In this paper, the latest measurements of modes which will constrain [alpha] and [gamma] will be presented, including B[sup 0] --> [rho][sup +][rho][sup -] for [alpha] and a measurement of sin(2[beta] + [gamma]) from the B[sup 0] --> D(*)[sup [+-]][pi][sup [-+]] system.

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

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Author :
language : en
Publisher:
Release Date : 2008

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

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}

Measurement Of The Ckm Angle Gamma At Babar

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Author : V. Tisserand
language : en
Publisher:
Release Date : 2006

Measurement Of The Ckm Angle Gamma At Babar written by V. Tisserand and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

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.

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

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Author :
language : en
Publisher:
Release Date : 2008

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

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}

Measurements Of The Ckm Angle Phi3 Gamma

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Author :
language : en
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Release Date : 2007

Measurements Of The Ckm Angle Phi3 Gamma written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

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].

Measurement Of The Ckm Angle Alpha At Babar

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Author : C. Yeche
language : en
Publisher:
Release Date : 2006

Measurement Of The Ckm Angle Alpha At Babar written by C. Yeche and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

We present BABAR experiment studies to measure the CKM angle {alpha} of the Unitarity Triangle. The measurements are based on the B meson decays into the two-body state ({pi}{pi}), the quasi two-body state ({rho}{rho}), and the three-body state ({pi}{sup +}{pi}{sup -}{pi}{sup 0}). The results are obtained from data samples of about 230 million {Upsilon}(4S) {yields} B{bar B} decays collected between 1999 and 2004 with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.

Measurements Of The Ckm Angle Gamma At Babar

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Author :
language : en
Publisher:
Release Date : 2007

Measurements Of The Ckm Angle Gamma At Babar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

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.