Measurement of the CKM Angle Alpha at the BABAR Detector Using B Meson Decays to Rho Final States

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ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Measurement of the CKM Angle Alpha at the BABAR Detector Using B Meson Decays to Rho Final States by : Attila Mihalyi

Download or read book Measurement of the CKM Angle Alpha at the BABAR Detector Using B Meson Decays to Rho Final States written by Attila Mihalyi and published by . This book was released on 2005 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of the CKM Angle Alpha at BaBar

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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis Measurement of the CKM Angle Alpha at BaBar by : C. Yeche

Download or read book Measurement of the CKM Angle Alpha at BaBar written by C. Yeche and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Charmless B Decays Related to Alpha at BaBar

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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (893 download)

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Book Synopsis Measurements of Charmless B Decays Related to Alpha at BaBar by :

Download or read book Measurements of Charmless B Decays Related to Alpha at BaBar written by and published by . This book was released on 2009 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report recent measurements of the CKM angle [alpha] using data collected by the BABAR detector at the PEP-II asymmetric-energy ee− collider at the SLAC National Accelerator Laboratory. In addition to improved constraints on [alpha] from the decays B{sup {+-}} 2![rho]{sup {+-}}[rho]°, we also present preliminary results of neutral and charged B meson decays to K1(1270)[pi] and K1(1400)[pi] and its impact on the estimate for the CKM angle [alpha] based on time-dependent analysis of CP-violating asymmetries in B° 2!a1(1260){sup {+-}} [pi]{sup {-+}}. Moreover we report the first observation of the decay B 2!a1(1260){sup {+-}}a1(1260){sup {-+}}; this mode can be used, in principle, to provide an independent measurement of [alpha].

Improved Measurement of the CKM Angle Alpha Using B0 to Rho+rho- Decays

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Improved Measurement of the CKM Angle Alpha Using B0 to Rho+rho- Decays by :

Download or read book Improved Measurement of the CKM Angle Alpha Using B0 to Rho+rho- 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 present results from an analysis of B° ({bar B}°) →??− using 232 million?(4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure the longitudinal polarization fraction f{sub L} = 0.978 ± 0.014(stat){sub -0.029}{sup +0.021}(syst) and the CP-violating parameters S{sub L} = -0.33 ± 0.24(stat){sub -0.14}{sup +0.08}(syst) and C{sub L} = -0.03 ± 0.18(stat) ± 0.09(syst). Using an isospin analysis of B →?? decays we determine the unitarity triangle?. The solution compatible with the Standard Model is? = (100 ± 13){sup o}.

Updated Measurement of the CKM Angle Alpha Using B0-]rho+rho- Decays

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ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis Updated Measurement of the CKM Angle Alpha Using B0-]rho+rho- Decays by : B. Aubert

Download or read book Updated Measurement of the CKM Angle Alpha Using B0-]rho+rho- Decays written by B. Aubert and published by . This book was released on 2006 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results from an analysis of B{sup 0} {yields} {rho}{sup +}{rho}{sup -} using 316 fb{sup -1} of {Upsilon}(4S) {yields} B{bar B} decays observed with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. They measure the B{sup 0} {yields} {rho}{sup +}{rho}{sup -} branching fraction, longitudinal polarization fraction f{sub L}, and the CP-violating parameters S{sub long} and C{sub long}: {Beta}(B{sup 0} {yields} {rho}{sup +}{rho}{sup -}) = (23.5 {+-} 2.2(stat) {+-} 4.1(syst)) x 10{sup -6}, f{sub L} = 0.977 {+-} 0.024(stat){sub -0.013}{sup +0.015}(syst), S{sub long} = -0.19 {+-} 0.21(stat){sub -0.07}{sup +0.05}(syst), C{sub long} = -0.07 {+-} 0.15(stat) {+-} 0.06(syst). Using an isospin analysis of B {yields} {rho}{rho} decays they determine the angle {alpha} of the unitarity triangle. One of the two solutions, {alpha} [74,117]{sup o} at 68% CL, is compatible with the standard model. All results presented here are preliminary.

Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector

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ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector by : Jinwei Wu

Download or read book Study of Branching Fractions and CP-violating Asymmetries in B Meson Decays to Rho and Pion Final States with the BABAR Detector written by Jinwei Wu and published by . This book was released on 2005 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurements of the CKM Angle Alpha at BaBar

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ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis Measurements of the CKM Angle Alpha at BaBar by :

Download or read book Measurements of the CKM Angle Alpha at BaBar written by and published by . This book was released on 2012 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of the CKM Angles [alpha] and [gamma] at the BABAR Experiment

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Measurement of the CKM Angles [alpha] and [gamma] at the BABAR Experiment by :

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 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Measurement of the CKM Angle Alpha with the B-factories

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ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (871 download)

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Book Synopsis Measurement of the CKM Angle Alpha with the B-factories by :

Download or read book Measurement of the CKM Angle Alpha with the B-factories written by and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: B-meson decays involving b → u transitions are sensitive to the Unitarity Triangle angle [alpha] (or [phi]2). The B-factories at SLAC and KEK have made significant progress toward the measurement of [alpha] in recent years. This paper summarizes the results of the B-factories' constraints on [alpha].

Measurements of CKM Angle Beta from BaBar

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ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Measurements of CKM Angle Beta from BaBar by :

Download or read book Measurements of CKM Angle Beta from BaBar written by and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present recent results of hadronic B meson decays related to the CKM angle beta. The data used were collected by the BABAR detector at the PEP-II asymmetric-energy ee− collider operating at the Upsilon(4S) resonance located at the Stanford Linear Accelerator Center.

Measurement of the Branching Fraction, Polarization, and CP Asymmetries in B0-]rho0rho0 Decay, and Implications for the CKM Angle Alpha

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ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (893 download)

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Book Synopsis Measurement of the Branching Fraction, Polarization, and CP Asymmetries in B0-]rho0rho0 Decay, and Implications for the CKM Angle Alpha by :

Download or read book Measurement of the Branching Fraction, Polarization, and CP Asymmetries in B0-]rho0rho0 Decay, and Implications for the CKM Angle Alpha written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study B° 2![rho]°[rho]° decays in a sample of 465 x 106 [Upsilon](4S) 2!B{bar B} events collected with the BABAR detector at the PEP-II asymmetric-energy ee− collider located at the Stanford Linear Accelerator Center (SLAC). We measure the branching fraction [Beta] = (0.92 ± 0.32 ± 0.14) x 10−6 and longitudinal polarization fraction f{sub L} = 0.75{sub -0.14}{sup +0.11} ± 0.04, where the first uncertainty is statistical and the second is systematic. The evidence for the B° 2![rho]°[rho]° signal has a significance of 3.1 standard deviations, including systematic uncertainties. We investigate the proper-time dependence of the longitudinal component in the decay and measure the CP-violating coefficients S{sub L}°° = (0.3 ± 0.7 ± 0.2) and C{sub L}°° = (0.2 ± 0.8 ± 0.3). They study the implication of these results for the unitarity triangle angle [alpha].

Measurement of the Angle Alpha at BABAR.

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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (893 download)

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Book Synopsis Measurement of the Angle Alpha at BABAR. by :

Download or read book Measurement of the Angle Alpha at BABAR. written by and published by . This book was released on 2009 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present recent measurements of the CKM angle [alpha] using data collected by the BABAR detector at the PEP-II asymmetric-energy ee− collider at the SLAC National Accelerator Laboratory, operating at the [Upsilon](4S) resonance. They present constraints on [alpha] from B 2![pi][pi], B 2![rho][rho] and B 2![rho][pi] decays.

Improved Measurement of B ̂\to\rho ̂\rho0̂ and Determination of the Quark-Mixing Phase Angle\̃alpha

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ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Improved Measurement of B ̂\to\rho ̂\rho0̂ and Determination of the Quark-Mixing Phase Angle\̃alpha by :

Download or read book Improved Measurement of B ̂\to\rho ̂\rho0̂ and Determination of the Quark-Mixing Phase Angle\̃alpha written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present improved measurements of the branching fraction?, the longitudinal polarization fraction f{sub L}, and the direct CP asymmetry A{sub CP} in the B meson decay channel B →?+?°. The data sample was collected with the BABAR detector at SLAC. The results are?(B+ →?+?°) = (23.7 ± 1.4 ± 1.4) x 10−6, f{sub L} = 0.950 ± 0.015 ± 0.006, and A{sub CP} = -0.054 ± 0.055 ± 0.010, where the uncertainties are statistical and systematic, respectively. Based on these results, they perform an isospin analysis and determine the CKM weak phase angle? to be (92.4{sub -6.5}{sup +6.0})°.

Śrī Jaina Gūrjara sāhitya ratno ane temanī kāvya prasādī

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ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Śrī Jaina Gūrjara sāhitya ratno ane temanī kāvya prasādī by :

Download or read book Śrī Jaina Gūrjara sāhitya ratno ane temanī kāvya prasādī written by and published by . This book was released on 1963 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of Branching Fraction Ratios and CP Asymmetries in B -]D0 CPK Decays with the BABAR Detector

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ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (893 download)

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Book Synopsis Measurement of Branching Fraction Ratios and CP Asymmetries in B -]D0 CPK Decays with the BABAR Detector by :

Download or read book Measurement of Branching Fraction Ratios and CP Asymmetries in B -]D0 CPK Decays with the BABAR Detector written by and published by . This book was released on 2010 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goals of the BABAR experiment are the detection of CP violation (CPV) in the B meson system, the precise measurement of some of the elements of the CKM matrix and the measurement of the rates of rare B meson decays. At present, BABAR has achieved major successes: (1) the discovery, in neutral B decays, of direct and mixing-induced CP violation; (2) accurate measurements of the magnitudes of the CKM matrix elements.

Measurements Related to CKM Angle Alpha in BABAR.

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Total Pages : pages
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Book Synopsis Measurements Related to CKM Angle Alpha in BABAR. by :

Download or read book Measurements Related to CKM Angle Alpha in BABAR. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The BABAR collaboration measurements of the B →??, B →?? and B →?? decays are presented. New results, from a 113 fb−1 data sample, on the time-dependent CP asymmetries of the longitudinally polarized component of the B° →??− channel are S{sub??, long} = -0.19 ± 0.33 ± 0.11 and C{sub??, long} = -0.23 ± 0.24 ± 0.14. Constraints on the Unitarity Triangle angle? from the?? and the {rho}{rho} systems are derived.

Measurement of the Direct CP Asymmetry in B-->s+gamma Via Sum of Exclusive B Meson Decays Using the BABAR Detector

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ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.:/5 (98 download)

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Book Synopsis Measurement of the Direct CP Asymmetry in B-->s+gamma Via Sum of Exclusive B Meson Decays Using the BABAR Detector by : Piti Ongmongkolkul

Download or read book Measurement of the Direct CP Asymmetry in B-->s+gamma Via Sum of Exclusive B Meson Decays Using the BABAR Detector written by Piti Ongmongkolkul and published by . This book was released on 2013 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: We perform a measurement of direct CP violation in b to s+gamma Acp, and the measurement of a difference between Acp for neutral B and charged B mesons, Delta A_X_sgamma, using 429 inverse femtobarn of data recorded at the Upsilon(4S) resonance with the BABAR detector. B mesons are reconstructed from 16 exclusive final states. Particle identification is done using an algorithm based on Error Correcting Output Code with an exhaustive matrix. Background rejection and best candidate selection are done using two decision tree-based classifiers. We found A_cp = 1.73%+-1.93%+-1.02% and Delta A_X_sgamma = 4.97%+-3.90%+-1.45% where the uncertainties are statistical and systematic respectively. Based on the measured value of Delta A_X_sgamma, we determine a 90% confidence interval for Im C_8g/C_7gamma, where C_7gamma and C_8g are Wilson coefficients for New Physics amplitudes, at -1.64