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Measurements Of Rare B Decays At Babar
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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 2009 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author presents some of the most recent BABAR measurements for rare B decays. These include rate asymmetries in the B decays to K{sup (*)}ll− and K+?− and branching fractions in the B decays to l+?{sub l}, K1(1270)+?− and K1(1400)+?−. The author also reports a search for the B+ decay to K{sub S}°K{sub S}°?+.
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 2002 with total page 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[sup 0][yields] J/[psi]K*[sup 0] are determined from an angular analysis. We report the measurements of the branching ratios B[sup 0][yields] D*[sup+] D*[sup -] and D*[sup+] D*[sup -] K[sub S][sup 0], and the study of exclusive two-body and quasi-two-body charmless decays. The branching fraction of the decay B[sup 0][yields] K*[sup 0][gamma] has been determined and the corresponding CP asymmetry has been measured.
Book Synopsis Two- and Three-Body Charmless B Decays at BaBar by :
Download or read book Two- and Three-Body Charmless B Decays at BaBar written by and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report recent measurements of rare charmless B decays performed by BaBar. The results are based on the final BaBar dataset of 424 fb−1 collected at the PEP-II B-factory based at the SLAC National Accelerator Laboratory. The study of rare B decays is a key ingredient to meet two of the main goals of the B-factories: assessing the validity of the Cabibbo-Kobayashi-Maskawa (CKM) picture of CP-violation by precisely measuring the elements of the Unitarity Triangle (UT), and searching for hints of New Physics (NP), or otherwise constraining NP scenarios, in processes which are suppressed in the Standard Model (SM). In loop processes, in particular, NP at some higher energy scale may manifest itself in the low energy effective theory as new couplings, such as those introduced by new very massive virtual particles in the loop. In NP searches hadronic uncertainties can play a major role, expecially for branching fraction measurements. Many theoretical uncertainties cancel in ratios of amplitudes, and most NP probes are therefore of this kind. In the following sections we report recent measurements, performed by the BaBar Collaboration, that are relevant to NP searches in charmless hadronic B decays.
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 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 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*.
Book Synopsis Rare Radiative and Leptonic B Decays: Recent Results from BaBar and Belle by :
Download or read book Rare Radiative and Leptonic B Decays: Recent Results from BaBar and Belle written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent BABAR and Belle results on rare B decays involving photons or lepton pairs are reviewed. New preliminary limits from both experiments for B[yields][rho][gamma] and B[sup 0][yields][Omega][gamma], and from BABAR for B[sup -][yields] K[sup -][nu][bar[nu]] and B[sup+][yields][tau][sup+][nu][sub[tau]] are presented. Also summarized from the past year are Belle measurements of B[yields] X[sub s][ell][sup+][ell][sup -] and B[sup 0][yields] K*[sub 2](1430)[sup 0][gamma], preliminary BABAR measurements of B[yields] X[sub s][gamma], and preliminary results from BABAR and Belle on B[yields] K[sup (*)][ell][sup+][ell][sup -]. No significant deviations from Standard Model predictions have yet been found.
Book Synopsis Flavor Changing Neutral Current B Decays at BaBar by :
Download or read book Flavor Changing Neutral Current B Decays at 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: Recent BaBar results on rare B decays involving flavour-changing neutral currents are presented. New measurements of the CP asymmetries in b 2!s[gamma] decays are reported as well as b 2!sll− branching ratio measurements.
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.
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 -}.
Book Synopsis Rare Decays in BaBar by : Emmanuele Salvati
Download or read book Rare Decays in BaBar written by Emmanuele Salvati and published by . This book was released on 2010 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Charmless B Decays Related to Alpha at BaBar by :
Download or read book Measurements of Charmless B Decays Related to Alpha at BaBar written by and published by . This book was released on 2009 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report recent measurements of the CKM angle [alpha] using data collected by the BABAR detector at the PEP-II asymmetric-energy ee− collider at the SLAC National Accelerator Laboratory. In addition to improved constraints on [alpha] from the decays B{sup {+-}} 2![rho]{sup {+-}}[rho]°, we also present preliminary results of neutral and charged B meson decays to K1(1270)[pi] and K1(1400)[pi] and its impact on the estimate for the CKM angle [alpha] based on time-dependent analysis of CP-violating asymmetries in B° 2!a1(1260){sup {+-}} [pi]{sup {-+}}. Moreover we report the first observation of the decay B 2!a1(1260){sup {+-}}a1(1260){sup {-+}}; this mode can be used, in principle, to provide an independent measurement of [alpha].
Download or read book Rare B Decays written by P. D. Jackson and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from Belle and BaBar on rare B decays involving flavor-changing neutral currents or purely leptonic final states are presented. Measurements of the CP asymmetries in B {yields} K*{gamma} and b {yields} s{gamma} are reported. Also reported are updated limits on B{sup +} {yields} K{sup +}{nu}{bar {nu}}, B{sup +} {yields} {tau}{sup +}{nu}, B{sup +} {yields} {mu}{sup +}{nu} and the recent measurement of B {yields} X{sub s}{ell}{sup +}{ell}{sup -}.
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 Penguin and Rare Decays in BaBar by :
Download or read book Penguin and Rare Decays in BaBar written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present recent results from the BABAR Collaboration on radiative decays. These include searches for new physics via measurements of several observables such as the time- dependent CP asymmetry in B0 → K0S[pi]- [pi]+[gamma] exclusive decays, as well as direct CP asymmetries and branching fractions in B → Xs[gamma] and B → Xsl+l- inclusive decays.
Book Synopsis CKM Parameters and Rare B Decays by :
Download or read book CKM Parameters and Rare B Decays written by and published by . This book was released on 2005 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the angles and sides of the unitarity triangle and of the rates of rare B meson decays are crucial for the precise determination of Standard Model parameters and are sensitive to the presence of new physics particles in the loop diagrams. In this paper the recent measurements performed in this area by BABAR and Belle will be presented. The direct measurement of the angle [alpha] is for the first time as precise as the indirect determination. The precision of the.
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