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Measurements Of Ckm Angle Beta From Babar
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Book Synopsis Measurements Related to the CKM Angle Beta/Phi1 from BABAR. by :
Download or read book Measurements Related to the CKM Angle Beta/Phi1 from BABAR. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements related to the CKM angle [beta] from BABAR based on 82 or [approx]115 fb[sup -1] data samples collected at the PEP-II e[sup +]e[sup -] asymmetric B Factory collider. A new method allowing to measure the sign of cos2[beta] with B[sup 0] [yields] J/[psi] ''K*[sup 0]'' events is explained and related results reported. Recent CP measurements in the penguin dominated modes B[sup 0] [yields] [phi]K[sup 0], B[sup 0] [yields] K[sup +] K[sup -] K[sub S][sup 0], B[sup 0] [yields] [pi][sup 0] K[sub S][sup 0] and B[sup 0] [yields] f[sub 0] (980)K[sub S][sup 0] are presented.
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.
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.
Book Synopsis Measurements of CKM Angles Beta/phi_1 and Alpha/phi_2 at the Babar and Belle Experiments by :
Download or read book Measurements of CKM Angles Beta/phi_1 and Alpha/phi_2 at the Babar and Belle Experiments written by and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report measurements of the CKM angles?/?1 and?/?2 done by the BABAR and Belle experiments. Both experiments have collected large data samples, corresponding to a total of more than 1 billion of B{bar B} pairs, at the ee− asymmetric-energy colliders PEP-II (SLAC) and KEK-B (KEK), respectively.
Book Synopsis Measurement of the CKM Angles at BaBar And Belle by :
Download or read book Measurement of the CKM Angles at BaBar And Belle written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goal of the BaBar and Belle experiments is to overconstrain the CKM Unitarity Triangle. Measurements of the angles of this triangle, known as [beta], [alpha], and [gamma] (or [phi]1, [phi]2, and [phi]3) give insight into the Standard Model description of CP violation in the quark sector. BaBar and Belle have recorded almost 1 ab−1 combined, and have measured [beta] to high precision. Measurements of [alpha] and [gamma] are less precise at present, but both experiments are rapidly accumulating data and developing new analysis techniques, and measurements of these angles will continue to provide useful constraints on the Standard Model description of CP violation in the years to come.
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:
Book Synopsis Measurements of the CKM Angle Beta by : Rainer Bartoldus
Download or read book Measurements of the CKM Angle Beta written by Rainer Bartoldus and published by . This book was released on 2005 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this article I report on new and updated measurements of the CP-violating parameter {beta}({phi}{sub 1}), which is related to the phase of the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix of the electroweak interaction. Over the past few years, {beta} has become the most precisely known parameter of the CKM unitarity triangle that governs the B system. The results presented here were produced by the two B Factories, BABAR and Belle, based on their most recent datasets of over 600 million B{bar B} events combined. The new world average for sin2{beta}, measured in the theoretically and experimentally cleanest charmonium modes, such as B{sup 0} {yields} J/{Psi}K{sub S}{sup 0}, is sin 2{beta} = 0.685 {+-} 0.032. In addition to these tree-level dominated decays, independent measurements of sin2{beta} are obtained from gluonic b {yields} s penguin decays, including B{sup 0} {yields} {phi}K{sub S}{sup 0}, B{sup 0} {yields} {eta}'K{sub S}{sup 0} and others. There are hints, albeit somewhat weaker than earlier this year, that these measurements tend to come out low compared to the charmonium average, giving rise to the tantalizing possibility that New Physics amplitudes could be contributing to the corresponding loop diagrams. Clearly, more data from both experiments are needed to elucidate these intriguing differences.
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:
Book Synopsis Measurements of the CKM Angle Beta in CharmlessLoop-dominated B Meson Decays at BaBar by : Alfio Lazzaro
Download or read book Measurements of the CKM Angle Beta in CharmlessLoop-dominated B Meson Decays at BaBar written by Alfio Lazzaro and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on preliminary measurements of time-dependent CP-violation asymmetries in charmless neutral B meson decays to K{sup +}K{sup -}K{sup 0} including resonant decays {phi}K{sup 0} and f{sub 0}(980)K{sup 0}, {eta}{prime}K{sup 0}, {pi}{sup 0}K{sub S}{sup 0}, K{sub S}{sup 0}K{sub S}{sup 0}K{sub S}{sup 0}, K{sub S}{sup 0}K{sub S}{sup 0}, {rho}{sup 0}K{sub S}{sup 0}, {omega}{sub S}{sup 0}. The results are obtained from a data sample of up to 347 million B{bar B} pairs produced by e{sup +}e{sup -} annihilation at the {Upsilon}(4S) resonance collected with the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC.
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.
Book Synopsis Measurement of the CKM Angles Gamma And 2 Beta + Gamma at B Factories by : Jean-Pierre Lees
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.
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.
Book Synopsis Fundamental Interactions by : Alan Astbury
Download or read book Fundamental Interactions written by Alan Astbury and published by World Scientific. This book was released on 2008 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume contains the latest results from the field of particle physics. The contributions cover the current status of all the Large Hadron Collider (LHC) experiments, the implications of the LHC for cosmology, and the search for dark matter and nuclear astrophysics. It also includes work on the current status of the future International Linear Collider (ILC).
Book Synopsis Study of Rare B Meson Decays Related to the CKM Angle Beta at BaBar by :
Download or read book Study of Rare B Meson Decays Related to the CKM Angle Beta at BaBar written by and published by . This book was released on 2007 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Results from the BaBar Experiment by :
Download or read book Recent Results from 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 authors present an overview of some of the most recent results from the BABAR experiment. They discuss the latest measurement of the time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates, that in the Standard Model (SM) is proportional to sin 2[beta]. They present measurements of branching fractions and CP-violating asymmetries in neutral B decays to two-body final states of charged pions and kaons, that are related to the angle [alpha] of the Unitarity Triangle. They also report the B[sup 0] lifetime measurement obtained from studying the B[sup 0] [yields] D*[sup -] [pi][sup +] and B[sup 0] [yields] D*[sup -] [rho][sup +] decay channels and the B[sup 0] [yields] D*[sup -] a[sub 1][sup +] branching fraction, obtained using a partial reconstruction technique. These measurements serve as a test and validation of the procedures required to measure the combination of CKM Unitarity Triangle angles sin(2[beta] + [gamma]).
Book Synopsis Measurements of the CKM Matrix Element [verticalV[sub Ub][vertical with BABAR. by :
Download or read book Measurements of the CKM Matrix Element [verticalV[sub Ub][vertical with BABAR. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A preliminary BABAR measurement of the inclusive partial branching fraction b [yields] ue[nu] is presented. The authors find [Delta][Beta](b [yields] ue[nu], 2.3 ... 2.6 GeV) = (0.152 [+-] 0.014[sub stat.] [+-] 0.014[sub syst.]) x 10[sup -3]. In addition, a preliminary measurement of the branching fraction B [yields] [rho]e[nu] is presented and the CKM matrix element V[sub ub] is determined from this measurement. The authors find [Beta](B[sup 0] [yields] [rho][sup -] e[sup +] [nu]) = (3.39 [+-] 0.44[sub stat.] [+-] 0.52[sub syst.] [+-] 0.60 [sub theo].) x 10[sup -4], and V[sub ub] = (3.69 [+-] 0.23[sub stat.] [+-] 0.27[sub syst.] [sub -0.59 theo.][sup +0.40]) x 10[sup -3].
Download or read book B Decay and CP Violation written by and published by . This book was released on 2011 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A remarkable success has been achieved by the B-Factories, going beyond expectation in some field, like the measurement of [gamma]. BABAR has now finished its data taking, leaving BELLE alone in the 'race', but still many analyses are going on. The CKM UT is constrained by both measurements of CP-conserving and CP-violating quantities, leading to a picture of the CKM sector consistent with the SM. Measurements of semi-leptonic decays benefit from improving experimental techniques and more precise theoretical computations. The angle [beta] is a precision measurement, reaching accuracy of SM calculation. The angle [alpha] will ultimatly be limited by penguin pollution. The measurement of [gamma] is reaching the 13{sup o} precision.
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