Branching Fractions and Charge Asymmetries in Charmless Hadronic Decays at BABAR.
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Page : 4 pages
File Size : 36,83 MB
Release : 2009
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Charmless Hadronic B Decays at BaBar
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Page : 7 pages
File Size : 41,37 MB
Release : 2007
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Book Description
We report recent measurements of branching fractions and charge asymmetries of charmless hadronic B decays using the data collected with the BABAR detector at the PEP-II asymmetric energy ee− collider.
Measurement of Branching Fractions and Search for CP-violating Charge Asymmetries in Charmless Two-body B Decays Into Pions and Kaons
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Page : 5 pages
File Size : 50,59 MB
Release : 2001
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We present measurements of the branching fractions and a search for CP-violating charge asymmetries in charmless hadronic decays of B mesons into two-body final states of kaons and pions. The results are based on a data sample of approximately 23 million BB(bar) pairs collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC.
Measurements of the Branching Fractions and Charge Asymmetries of Charmless Three-Body Charged B Decays
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Page : 7 pages
File Size : 19,7 MB
Release : 2003
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We present measurements of branching fractions and charge asymmetries for charmless B-meson decays to three-body final states of charged pions and kaons. The analysis uses 81.8 fb−1 of data collected at the?(4S) resonance with the BABAR detector at the SLAC PEP-II asymmetric B Factory. We measure the branching fractions?(B 2!?+?−?+) = (10.9 ± 3.3 ± 1.6) x 10−6,?(B+ 2!K+?−?+) = (59.1 ± 3.8 ± 3.2) x 10−6, and?(B+ 2!K+K−K+) = (29.6 ± 2.1 ± 1.6) x 10−6, and provide 90% C.L. upper limits for other decays. We observe no charge asymmetries for these modes.
Measurement of Charmless Hadronic B Decays Branching Fractions at BaBar
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Page : pages
File Size : 17,95 MB
Release : 2001
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We present preliminary measurements of the branching fractions for charmless hadronic decays of B mesons into two-body final states with kaons, pions and a[phi] resonance. The measurements are based on a data sample of approximately 23 million B[bar B] pairs collected by the BaBar detector at the PEP-II asymmetric B Factory at SLAC.
Charmless Hadronic B Decays at Belle and BaBar
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Page : 4 pages
File Size : 30,83 MB
Release : 2011
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I report on recent measurements from the Belle and BABAR collaborations on the decay of the B meson to hadronic final states without a charm quark. The study of the branching fractions and angular distributions of B meson decays to hadronic final states without a charm quark probes the dynamics of both the weak and strong interactions, and plays an important role in understanding CP Violation (CPV) in the quark sector. CP Violation at the B factories is described graphically by a triangle with sides formed from the CKM matrix elements V{sub qd}V*{sub qb} (q = u, c, t) and internal angles [alpha], [beta] [gamma] (or [phi]2, [phi]1, [phi]3). Discrepancies in the measured values of the sides and angles could be an indication of New Physics beyond the Standard Model (SM) due to enhanced branching fractions or modified CP asymmetries. The experimental measurements of branching fractions, CP asymmetries, polarization and phases (both weak and strong) can be compared to theoretical models based on, for example, QCD factorization, SU(3) symmetry and Lattice QCD.
Measurement of Branching Fractions and Charge Asymmetries for Exclusive B Decays to Charmonium
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Page : pages
File Size : 23,58 MB
Release : 2005
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We report measurements of branching fractions and charge asymmetries of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state and a light strange meson. The charmonium mesons considered are J/[psi], [psi](2S) and [chi]{sub c1} and the light meson is either K or K*. We use a sample of about 124 million B{bar B} pairs collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center.
Hadronic B Decays to Charmless Final States and to J/psi K*
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Page : 5 pages
File Size : 28,13 MB
Release : 2001
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Measurements of Branching Fractions and CP Asymmetries in Charmless Hadronic Two-body Neutral-B Meson Decays
Author : 吳姿瑩
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Page : pages
File Size : 46,3 MB
Release : 2011
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Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Decays
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Page : pages
File Size : 27,52 MB
Release : 2004
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Book Description
With a sample of approximately 89 million B[bar B] pairs collected with the BABAR detector, they measure branching fractions, determine the degree of longitudinal polarization, and search for direct CP violation in the decays B[sup 0][yields][phi]K*[sup 0] and B[sup+][yields][phi]K*[sup+]. They perform a search for other charmless vector-vector B decays involving[rho] and K*(892) resonances and observe the decays B[sup+][yields][rho][sup 0] K*[sup+] and B[sup+][yields][rho][sup 0][rho][sup+]. The branching fractions are measured to be[Beta]([phi]K*[sup 0])= (11.1[sub -1.2][sup+1.3][+-] 1.1) x 10[sup -6], [Beta]([phi]K*[sup+])= (12.1[sub -1.9][sup+2.1][+-] 1.5) x 10[sup -6], [Beta]([rho][sup 0] K*[sup+])= (7.7[sub -2.0][sup+2.1][+-] 1.4) x 10[sup -6], and[Beta]([rho][sup 0][rho][sup+])= (9.9[sub -2.5][sup+2.6][+-] 2.5) x 10[sup -6]. The longitudinal polarization fractions are measured to be[Lambda][sub L]/[Lambda]([phi]K*[sup 0])= 0.65[+-] 0.07[+-] 0.04 and[Lambda][sub L]/[Lambda]([phi]K*[sup+])= 0.46[+-] 0.12[+-] 0.05. They measure the charge asymmetries:[Alpha][sub CP]([phi]K*[sup 0])=+0.04[+-] 0.12[+-] 0.02 and[Alpha][sub CP]([phi]K*[sup+])=+0.16[+-] 0.17[+-] 0.04.
