Measurements Of The Cp Content And Cp Violating Asymmetries In Neutral B Decays To Two D Mesons With The Babar Detector PDF Download
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Release | : 2004 |
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Download Measurements of the CP Content and CP-violating Asymmetries in Neutral B Decays to Two D* Mesons with the BABAR Detector Book in PDF, ePub and Kindle
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Release | : 2005 |
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Download Measurement of the CP Content and CP Violating Asymmetries in Neutral B Decays to Two D Mesons with the BaBar Detector Book in PDF, ePub and Kindle
Author | : Vincent A. Lillard |
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Total Pages | : 171 |
Release | : 2004 |
Genre | : CP violation (Nuclear physics) |
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Download Measurement of the CP Content and CP Violating Asymmetries in Neutral B Decays to Two D Mesons with the BaBar Detector Book in PDF, ePub and Kindle
Author | : Morris Nicholas Danielson |
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Total Pages | : 286 |
Release | : 2005 |
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Download Measurements of CP-violating Asymmetries and Branching Fractions in the Decays of B Mesons to Charged Pions and Kaons at the Babar Detector Book in PDF, ePub and Kindle
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Download Measurement of CP-Violating Asymmetries in B0 Decays to CP Eigenstates Book in PDF, ePub and Kindle
We present measurements of time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates. The measurement uses a data sample of 23 million[Upsilon](4S)[yields] B[bar B] decays collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we find events where one neutral B meson is fully reconstructed in a CP eigenstate containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the Standard Model is proportional to sin2[beta], is derived from the decay time distributions in such events. The result is sin2[beta]= 0.34[+-] 0.20 (stat)[+-] 0.05 (syst).
Author | : Markus Röhrken |
Publisher | : Springer Science & Business Media |
Total Pages | : 205 |
Release | : 2013-10-17 |
Genre | : Science |
ISBN | : 3319007262 |
Download Time-Dependent CP Violation Measurements Book in PDF, ePub and Kindle
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.
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Download Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Pions and Kaons with the BABAR Detector Book in PDF, ePub and Kindle
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−)
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Release | : 2003 |
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Download Study of CP Violation in B Mesons Using the BABAR Detector Book in PDF, ePub and Kindle
We present results on time-dependent CP asymmetries in neutral B decays. The measurements use a data sample of about 88 million[Upsilon](4S)[yields] B[bar B] decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We study events in which one neutral B meson is fully reconstructed in a final state and the other B meson is determined to be either a B[sup 0] or[bar B][sup 0] from its decay products. Final states considered include B[sup 0][yields] J/[psi]K[sub S][sup 0], B[sup 0][yields] J/[psi]K[sub L][sup 0], B[sup 0][yields] J/[psi][pi][sup 0], B[sup 0][yields] D*[sup+] D*[sup -], B[sup 0][yields][phi]K[sub S][sup 0], B[sup 0][yields][pi][sup+][pi][sup -], and B[sup 0][yields][rho][sup[+-]][pi][sup[-+]].
Author | : Ran Liu |
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Total Pages | : 258 |
Release | : 2004 |
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Download The Measurement of CP Asymmetries and Branching Fractions in Neutral B Meson Decays to Charged Rhos and Pions (kaons) with the BABAR Detector Book in PDF, ePub and Kindle
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Release | : 2001 |
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Download Observation of CP Violation in the B[sup 0] Meson System Book in PDF, ePub and Kindle
We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of[Upsilon](4S) decays collected in 2001, bringing the data available to 32 million B[bar B] pairs. We select events in which one neutral B meson is fully reconstructed in final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the Standard Model is proportional to sin2[beta], is derived from the decay time distributions in such events. The result sin2[beta]= 0.59[+-] 0.14 (stat)[+-] 0.05 (syst) establishes CP violation in the B[sup 0] meson system. We also determine[lambda]= 0.93[+-] 0.09 (stat)[+-] 0.03 (syst), consistent with no direct CP violation.