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The Measurement Of Cp Asymmetries In The Three Body Charmless Decay Neutral B Meson Decays To Neutral Kaons Neutral Kaons Neutral Kaons
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Book Synopsis The Measurement of CP Asymmetries in the Three-Body Charmless Decay Neutral B Meson Decays to Neutral Kaon(S) Neutral Kaon(S) Neutral Kaon(S). by : Haleh K. Hadavand
Download or read book The Measurement of CP Asymmetries in the Three-Body Charmless Decay Neutral B Meson Decays to Neutral Kaon(S) Neutral Kaon(S) Neutral Kaon(S). written by Haleh K. Hadavand and published by . This book was released on 2006 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, a measurement of CP-violating effects in decays of neutral B mesons is presented. The data sample for this measurement consists of about 272 million {Upsilon}(4S) {yields} B{bar B} decays collected between 1999 and 2004 with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider, located at the Stanford Linear Accelerator Center. One neutral B meson is fully reconstructed in the CP eigenstate B{sup 0} {yields} K{sub S}{sup 0} K{sub S}{sup 0} K{sub S}{sup 0}. The other B meson is determined to be either a B{sup 0} or a {bar B}{sup 0}, at the time of its decay, from the properties of its decay products. The proper time {Delta}t elapsed between the decay of the two mesons is determined by reconstructing their decay vertices, and by measuring the distance between them. A novel technique for determining the B vertex of the decay to the CP eigenstate B{sup 0} {yields} K{sub S}{sup 0} K{sub S}{sup 0} K{sub S}{sup 0} has been applied since the tracks in the final state do not originate from the B decay vertex. The time-dependent CP asymmetry amplitudes are determined by the distributions of {Delta}t in events with a reconstructed B meson in the CP eigenstate. The detector resolution and the b flavor tagging parameters are constrained by the {Delta}t distributions of events with a fully reconstructed flavor eigenstate. Because of the special topology of this decay, the detector resolution on {Delta}t must be checked for consistency with decays with tracks which originate from the B decay. From a maximum likelihood fit to the {Delta}t distributions of all selected events, the value of the CP violating asymmetries are measured to be S{sub 3K{sub S}{sup 0}} = -0.71{sub -0.32}{sup +0.38} {+-} 0.04 and C{sub 3K{sub S}{sup 0}} = -0.34{sub -0.25}{sup +0.28} {+-} 0.05. Fixing C = 0 we measure the time-dependent CP asymmetry amplitude sin 2{beta} = -S{sub 3K{sub S}{sup 0}} = 0.79{sub -0.36}{sup +0.39} {+-} 0.04. The value of sin 2{beta} is in agreement with Standard Model predictions.
Book Synopsis Measurements of CP-violating Asymmetries in Neutral B Meson Decays Into Three Kaons by : Joshua M. Thompson
Download or read book Measurements of CP-violating Asymmetries in Neutral B Meson Decays Into Three Kaons written by Joshua M. Thompson and published by . This book was released on 2008 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of CP-violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector by : Morris Nicholas Danielson
Download or read book Measurements of CP-violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector written by Morris Nicholas Danielson and published by . This book was released on 2005 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Rhos and Pions (kaons) with the BABAR Detector by : Ran Liu
Download or read book The Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Rhos and Pions (kaons) with the BABAR Detector written by Ran Liu and published by . This book was released on 2004 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CPconf2000 written by Mauro Savrié and published by . This book was released on 2001 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector by :
Download or read book Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a measurement of CP asymmetries and branching fractions for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 88 million?(4S) → B{bar B} decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B factory located at the Stanford Linear Accelerator Center. A fit to kinematic, topological, and particle identification information measures the charge-averaged branching fractions?(B° →??−) = (4.7 ± 0.6 ± 0.2) x 10−6 and?(B° → K+?−) = (17.9 ± 0.9 ± 0.7) x 10−6; the 90% confidence level upper limit?(B° → K+K−)
Download or read book Nuclear Physics written by and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-Dependent CP Violation Measurements by : Markus Röhrken
Download or read book Time-Dependent CP Violation Measurements written by Markus Röhrken and published by Springer Science & Business Media. This book was released on 2013-10-17 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a high-quality, high-precision method for the data analysis of an interesting elementary particle reaction. The data was collected at the Japanese B-meson factory KEKB with the Belle detector, one of the most successful large-scale experiments worldwide. CP violation is a subtle quantum effect that makes the world look different when simultaneously left and right and matter and antimatter are exchanged. This being a prerequisite for our own world to have developed from the big bang, there are only a few experimental indications of such effects, and their detection requires very intricate techniques. The discovery of CP violation in B meson decays garnered Kobayashi and Maskawa, who had predicted these findings as early as 1973, the 2008 Nobel prize in physics. This thesis describes in great detail what are by far the best measurements of branching ratios and CP violation parameters in two special reactions with two charm mesons in the final state. It presents an in-depth but accessible overview of the theory, phenomenology, experimental setup, data collection, Monte Carlo simulations, (blind) statistical data analysis, and systematic uncertainty studies.
Book Synopsis Measurement of CP-Violating Asymmetries In Neutral B Meson Decays Into Three Kaons by :
Download or read book Measurement of CP-Violating Asymmetries In Neutral B Meson Decays Into Three Kaons written by and published by . This book was released on 2008 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Model (SM) of particle physics successfully describes all of the observed interactions of the fundamental particles (with the exception of non-zero neutrino mass). Despite this enormous success, the SM is widely viewed as an incomplete theory. For example, the size of the asymmetry between matter and antimatter is not nearly large enough to account for the abundance of matter observed throughout the universe. It is thus believed that as-yet-unknown physical phenomena must exist that introduce new asymmetries between matter and antimatter. In this thesis, by studying decays that happen only rarely in the SM, we make measurements of asymmetries between matter and antimatter that are potentially sensitive to the existence of processes beyond the SM. At the PEP-II asymmetric-energy B Factory at SLAC, electrons and positrons are collided at the [Upsilon](4S) resonance to create pairs of B mesons. The BABAR detector is used to measure the subsequent decay products. Using 383 million [Upsilon](4S) 2!B$\bar{B}$ decays, we study the decay B0 2!K+K-K0. In the SM, this decay is dominated by loop amplitudes. Asymmetries between matter and antimatter (CP asymmetries) are extracted by measuring the time-dependence of the complex amplitudes describing the B0 and $\bar{B}$0 decays as functions of their kinematics. The interference between decays with and without the mixing of neutral B mesons allows for the measurement of the angle [beta]eff, which is a measure of CP violation. We also measure the direct CP asymmetry ACP. Data samples reconstructed from three K0 modes (KS0 2![pi]+[pi]-, KS0 2![pi]0[pi]0, and KL0) are fit simultaneously. They find ACP = -0.015 ± 0.077 ± 0.053 and [beta]eff = 0.352 ± 0.076 ± 0.026 rad, corresponding to a CP violation significance of 4.8[sigma]. A second solution near [pi]/2-[beta]eff is disfavored with a significance of 4.5[sigma]. In a subsequent fit to the region with mK+K-> 1.1 GeV/c2, they find ACP = -0.054 ± 0.102 ± 0.060 and [beta]eff = 0.436 ± 0.087-0.031+0.055 rad, excluding the possibility that [beta]eff = 0 at 5.1[sigma]. They use the data with msub K+K-
Download or read book QCD 03 written by Stephan Narison and published by . This book was released on 2004 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Measurement of CP Asymmetries in the Three-body Charmless Decay B0 --> K0s K0s K0s by : Haleh Khani Hadavand
Download or read book The Measurement of CP Asymmetries in the Three-body Charmless Decay B0 --> K0s K0s K0s written by Haleh Khani Hadavand and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the QCD ... Euroconference by :
Download or read book Proceedings of the QCD ... Euroconference written by and published by . This book was released on 2003 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Time-dependent CP Asymmetry in the Decay of a Neutral B Meson to a J/Psi and a Long-lived Neutral Kaon at BABAR by : Emilie Claire Mutsumi Martin
Download or read book Measurement of Time-dependent CP Asymmetry in the Decay of a Neutral B Meson to a J/Psi and a Long-lived Neutral Kaon at BABAR written by Emilie Claire Mutsumi Martin and published by . This book was released on 2009 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BABAR experiment at the SLAC National Accelerator Laboratory provides an excellent environment to study CP violation in B decays. A measurement of time-dependent CP-violating asymmetry in neutral B decays to charmonium states, in particular B0, B¯ 0 → J/psi K0L , is presented here. J/psi K0L is the most compelling CP-even final state used to measure the Unitarity Triangle parameter sin2beta at BABAR. The measurements reported here use a data sample of (465 +/- 5) million Upsilon(4 S) → BB¯ decays collected with the BABAR detector at the PEP-II asymmetric energy e +e- storage operating at the SLAC National Accelerator Laboratory. The time-dependent CP asymmetry parameters measured for the B0 → J/psi K0L decay are: C = -0.033 +/- 0.050(stat) +/- 0.027(syst) and S = -0.694 +/- 0.061(stat) +/- 0.031(syst). These results are in good agreement with the Standard Model predictions.
Book Synopsis Measurements of Branching Fractions and CP Asymmetries in Charmless Hadronic Two-body Neutral-B Meson Decays by : 吳姿瑩
Download or read book Measurements of Branching Fractions and CP Asymmetries in Charmless Hadronic Two-body Neutral-B Meson Decays written by 吳姿瑩 and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector by : Amir Farbin
Download or read book Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector written by Amir Farbin and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of CP Asymmetries and Branching Fractions in Two-body Neutral B Mesons Decays to Charged Pions and Kaons with the BABAR Detector by : Amir Farbin
Download or read book Measurement of CP Asymmetries and Branching Fractions in Two-body Neutral B Mesons Decays to Charged Pions and Kaons with the BABAR Detector written by Amir Farbin and published by . This book was released on 2003 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Time-Dependent CP Asymmetry in the Decay of a Neutral B Meson to a J/Psi and a Long-Lived Neutral Kaon at BaBar by :
Download or read book Measurement of Time-Dependent CP Asymmetry in the Decay of a Neutral B Meson to a J/Psi and a Long-Lived Neutral Kaon at BaBar written by and published by . This book was released on 2013 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
