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Rare B Decays With The Babar Detector
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Book Synopsis Rare B Decays with the BaBar Detector by :
Download or read book Rare B Decays with the BaBar Detector written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The BABAR detector at SLAC's PEP-II storage ring collected a luminosity equivalent data of about 22 fb[sup -1] at the[Upsilon](4S) resonance during 1999 and 2000. Results on branching fractions of rare and charmless B$-meson decays and first fits for direct CP violation are presented.
Download or read book Rare B Decays in BABAR. written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements and searches for rare B decays have been performed with the BaBar detector at the PEP-II ee− asymmetric B Factory, operating at the [Upsilon](4S) resonance. The authors report some recent branching fraction measurements on hadronic and radiative B decays, occurring from b --> s/d and b --> u transitions. Most of the results presented here are based on a data sample corresponding to a luminosity of 81.9 fb−1.
Book Synopsis Measurements of Rare B Decays at BABAR. by :
Download or read book Measurements of Rare B Decays at BABAR. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of searches for rare B meson decays. The measurements use all or part of 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 the Stanford Linear Accelerator Center. We study a variety of decays dominated by electromagnetic, electroweak and gluonic penguin transitions, and report measurements of branching fractions.
Download or read book Rare B Decays at 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 authors present recent results on rare B meson decays based on data taken by the BABAR detector at the PEP-II asymmetric ee− collider. Included in this report are measurements of branching fractions and other quantities of interest for several hadronic, radiative, electroweak, and purely leptonic decays of B mesons.
Download or read book BaBar written by D. Hutchcroft and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three two body and two resonance decays of the B mesons have been measured using data from the BABAR detector: B{sup 0} {yields} {pi}{sup {+-}}, K{sup {-+}}, K{sup +}K{sup -}, K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} and B{sup 0} {yields} a{sub 1}{sup +}(1260){pi}{sup -}. The branching ratio and that of some intermediate resonances are presented along with the Cp asymmetry of the decay B{sup 0} {yields} K*{sup +}{pi}{sup -}.
Download or read book Leptonic B Decays at BaBar written by and published by . This book was released on 2003 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results on searches for the rare B decays B° → ll− (l = e or?) and B+ → K+?{bar?} in?(4S) decays. The data used in these analyses were collected with the BABAR detector at the PEP-II e+e− storage ring during the years 2000 and 2001. The B° → l+l− search was performed using an integrated luminosity of 54.4 fb−1 accumulated at the?(4S) resonance (about 60 million B{bar B} pairs) while the B+ → K+?{bar?} search was performed with 50.7 fb−1 (about 56 million B{bar B} pairs). Both analyses use an additional 6.4 fb−1 of data accumulated about 40 MeV below resonance. They see no evidence for a signal in either the B → l+l− or B → K+{nu}{bar {nu}} decay modes and set the following upper limits at the 90% CL:?(B° → e+e−)
Book Synopsis The Search for Rare Non-hadronic B-meson Decays with Final-state Neutrinos Using the BaBar Detector by : Dana Lindemann
Download or read book The Search for Rare Non-hadronic B-meson Decays with Final-state Neutrinos Using the BaBar Detector written by Dana Lindemann and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis presents the searches for two rare B meson decays: the radiative leptonic decay B+ -> l+ nu gamma (l = e, mu) and the flavor-changing neutral current B -> K(*) nu nubar. These searches use the full dataset collected by the BaBar experiment, which corresponds to almost 500 million BB pairs. After fully reconstructing the hadronic decay of one of the B mesons in Upsilon(4S) -> BB decays, evidence of B+ -> l+ nu gamma or B -> K(*) nu nubar is looked for in the rest of the event. No significant evidence of either signal decay is observed. Model-independent branching-fraction upper limits are set at BR(B ->e nu gamma)17 x10 {-6}, BR(B -mu nu gamma)24 x10 {-6}, and BR(B -l nu gamma)15.6 x10 {-6}, all at the 90% confidence level. These are currently the most stringent published upper limits for B+ - l+ nu gamma. In addition, branching-fraction upper limits are set at BR(B -> K+ nu nubar)3.7 x10 {-5}, BR(B - K0 nu nubar)8.0 x10 {-5}, BR(B - K*+ nu nubar)11.5 x10 {-5}, and BR(B - K*0 nu nubar)9.2 x10 {-5}, all at the 90% confidence level. For additional sensitivity to New Physics contributions, partial B - K(*) nu nubar branching-fraction upper limits are also determined over the full kinematic range." --
Book Synopsis Charmless Hadronic B Decays at BaBar by :
Download or read book Charmless Hadronic B Decays at BaBar written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary results of several searches for rare charmless hadronic decays of the B meson using data collected by the BABAR detector at the Stanford Linear Accelerator Center's PEP-II storage ring. We search for the decays hh−, h+h−h+, h+h−?°, X°h+, and X°K{sub S}°, where h =? or K, and X° =?' or?. In a sample of 8.8 million B{bar B} decays they measure the branching fractions. They calculate upper limits for the modes without a significant signal.
Book Synopsis Radiative Penguin and Leptonic Rare Decays at BABAR. by :
Download or read book Radiative Penguin and Leptonic Rare Decays at BABAR. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent BABAR results on rare B decays involving flavour-changing neutral currents or purely leptonic final states are presented. New measurements of the CP asymmetries in B [yields] K*[gamma], B [yields] K*[sub 2](1430)[gamma], and b [yields] s[gamma] are reported, as well as a new measurement of the B [yields] K*[gamma] branching fraction. Also reported are updated limits on B [yields] [mu][nu] and recent measurements of B [yields] K(*)[ell][ell] and b [yields] s[ell][ell]. The data sample comprises 123 [center-dot] 10[sup 6] [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II e[sup +]e[sup -] storage ring.
Book Synopsis Study of Hadronic and Rare B Decays in BABAR. by :
Download or read book Study of Hadronic and Rare B Decays in BABAR. written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results from BaBar experiment for the measurement of inclusive and exclusive branching fractions of B mesons into final states containing J/[psi], [psi](2S) and [chi]c. The contributions of CP even and odd amplitudes in the decay B° 2!J/[psi]K*° are determined from an angular analysis. We report the measurements of the branching ratios B° 2!D* D*− and D* D*− K{sub S}°, and the study of exclusive two-body and quasi-two-body charmless decays. The branching fraction of the decay B° 2!K*°[gamma] has been determined and the corresponding CP asymmetry has been measured.
Book Synopsis Search for the Rare Decays $B^0\to D_s^{(*)+} A_{0(2)}^-$ by : J. C. Chen
Download or read book Search for the Rare Decays $B^0\to D_s^{(*)+} A_{0(2)}^-$ written by J. C. Chen and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have searched for the decays B{sup 0} {yields} D{sub s}{sup +}a{sub 0}{sup -}, B{sup 0} {yields} D*{sub s}{sup +} a{sub 0}{sup -}, B{sup 0} {yields} D{sub s}{sup +}a{sub 2}{sup -} and B{sup 0} {yields} D*{sub s}{sup +} a{sub 2}{sup -} in a sample of about 230 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. They find no evidence for these decays and set upper limits at 90% C.L. on the branching fractions: {Beta}(B{sup 0} {yields} D{sub s}{sup +} a{sub 0}{sup -})
Book Synopsis Studies of Rare Hadronic B Decays with BaBar by :
Download or read book Studies of Rare Hadronic B Decays with BaBar written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a selection of recent results from studies of rare hadronic B decays based on a sample of 232 million B{bar B} pairs, corresponding to an integrated luminosity of 211 fb−1, which were recorded with the BABAR detector at the PEP-II asymmetric-energy ee− storage ring.
Book Synopsis Measurements of the Rare Decays B -] Kl+l- and B -]K*l+l- by : J. C. Chen
Download or read book Measurements of the Rare Decays B -] Kl+l- and B -]K*l+l- written by J. C. Chen and published by . This book was released on 2005 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the flavor-changing neutral current decays B {yields} K{ell}{sup +}{ell}{sup -} and B {yields} K*{ell}{sup +}{ell}{sup -}, where {ell}{sup +}{ell}{sup -} is either an e{sup +}e{sup -} or {mu}{sup +}{mu}{sup -} pair. The data sample comprises 229 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring.
Book Synopsis Recent Results on Rare B Decays from BABAR and BELLE. by :
Download or read book Recent Results on Rare B Decays from BABAR and BELLE. written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The PEP-II and KEK asymmetric B factories are providing the BaBar and BELLE collaborations large samples of B mesons, enabling high-statistics searches for rare B decays. The rates for some of these decays can be enhanced by contributions from new physics, while others can provide constraints on the Unitarity Triangle. The author reviews a variety of recent results on rare B decays from these two experiments.
Book Synopsis Study of Rare Radiative B Decay to K2*(1430) Meson Using the BaBar Detector by : Qinghua Guo
Download or read book Study of Rare Radiative B Decay to K2*(1430) Meson Using the BaBar Detector written by Qinghua Guo and published by . This book was released on 2004 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New BaBar Results on Rare Leptonic B Decays by :
Download or read book New BaBar Results on Rare Leptonic B Decays written by and published by . This book was released on 2002 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: New preliminary BaBar results for rare leptonic decays B− → K−?{bar?} and B° → ll− are reported. Using data collected at the?(4S) with the BaBar detector, no evidence for a signal was found yielding the corresponding upper limits at the 90% confidence level:?(B− → K− {nu}{bar {nu}})
Book Synopsis RARE B DECAYS AND DIRECT CP VIOLATION AT BABAR. by :
Download or read book RARE B DECAYS AND DIRECT CP VIOLATION AT BABAR. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The search for rare B decays and direct CF violation at BABAR is described. The following measurements (based on integrated luminosities ranging from 56.4 to 81.9 fb[sup -1]) are summarized: the inclusive branching fractions and direct CF asymmetries of B[sup+][yields] h[sup+]h[sup -]H[sup+] (h=[pi], K), the exclusive branching fractions of B[sup+][yields] K[sup+][pi][sup -][pi][sup+] (where significant signals are observed in the B[sup+][yields] K*[sup 0](892)[pi][sup+], B[sup+][yields] f[sub 0](98)K[sup+], B[sup+][yields][chi][sub c0]K[sup+], B[sup+][yields][bar D][sup 0][pi][sup+] and B[sup+][yields] higher K*[sup 0][pi][sup+] channels), the branching fractions of B[sup+][yields][rho][sup 0][rho][sup+] and B[sup+][yields][rho][sup 0] K*[sup+], and finally, the branching fractions, the longitudinal components, and the direct CF asymmetries in B[yields][phi]K*.
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