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Measurement Of Branching Fractions And Resonance Contributions For B0 D0bar K Pi And Search For B0 D0 K Pi Decays
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Book Synopsis Measurement of Branching Fractions and Resonance Contributions for B0 -] D0bar K+ Pi- and Search for B0 -] D0 K+ Pi- Decays by :
Download or read book Measurement of Branching Fractions and Resonance Contributions for B0 -] D0bar K+ Pi- and Search for B0 -] D0 K+ Pi- Decays written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 226 million?(4S) → B{bar B} events collected with the BABAR detector at the PEp-II ee− storage ring at the Stanford Linear Accelerator Center, they measure the branching fraction for B° → {bar D}°K+?−, excluding B° → D*−K+, to be?(B° → {bar D}°K+?−) = 88 ± 15 ± 9 x 10−6. They observe B° → {bar D}°K*(892)° and B° → D*2(2460)−K+ contributions. The ratio of branching fractions?(B° → D*− K+)/?(B° → D*−?+) = (7.76 ± 0.34 ± 0.29)% is measured separately. The branching fraction for the suppressed mode B° → D°K+?− is?(B° → D°K+?−)
Book Synopsis Improved Measurements of the Branching Fractions for B0 Into Pi+pi- and B0 Into K+pi-, and a Search for B0 Into K+K- by :
Download or read book Improved Measurements of the Branching Fractions for B0 Into Pi+pi- and B0 Into K+pi-, and a Search for B0 Into K+K- written by and published by . This book was released on 2006 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the branching fractions for the charmless two-body decays B° →??− and B° → K+?−, and a search for the decay B° → K+K−. They include the effects of final-state radiation from the daughter mesons for the first time, and quote branching fractions for the inclusive processes B° → h+h'−n?, where h and h' are pion or kaons. The maximum value of the sum of the energies of the n undetected photons, E{sub {gamma}}{sup max}, is mode-dependent. Using a data sample of approximately 227 million?(4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC.
Book Synopsis Improved Measurements of Branching Fractions for B0 -] Pi+pi-, K+pi-, and Search for B0 -] K+K- by : J. C. Chen
Download or read book Improved Measurements of Branching Fractions for B0 -] Pi+pi-, K+pi-, and Search for B0 -] K+K- written by J. C. Chen and published by . This book was released on 2005 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary measurements of branching fractions for the charmless two-body decays B{sup 0} {yields} {pi}{sup +}{pi}{sup -} and K{sup +}{pi}{sup -}, and a search for B{sup 0} {yields} K{sup +}K{sup -} using a data sample of approximately 227 million B{bar B} decays. Signal yields are extracted with a multi-dimensional maximum likelihood fit, and the efficiency is corrected for the effects of final-state radiation. We find the charge-averaged branching fractions (in units of 10{sup -6}): {Beta}(B{sup 0} {yields} {pi}{sup +}{pi}{sup -}) = 5.5 {+-} 0.4 {+-} 0.3; {Beta}(B{sup 0} {yields} K{sup +}{pi}{sup -}) = 19.2 {+-} 0.6 {+-} 0.6; and {Beta}(B{sup 0} {yields} K{sup +}K{sup -}) =
Book Synopsis Measurement of the Ratio of Branching Fractions B(D0 ---] K+ Pi- ) by :
Download or read book Measurement of the Ratio of Branching Fractions B(D0 ---] K+ Pi- ) written by and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of R{sub B}, the ratio of the branching fraction for the rare decay D° → K?− to that for the Cabibbo-favored decay D° → K−?+. Charge conjugate decays are implicitly included. A signal of 2005 ± 104 events for the decay D° → K+?− is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35 fb−1 produced in {bar p}p collisions at √s = 1.96 TeV. Assuming no mixing, they find R{sub B} = [4.05 ± 0.21(stat) ± 0.11(syst)] x 10−3. This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments.
Book Synopsis Analysis of D0 -] K+ Pi- Pi0 Decays by : Michael Galante Wilson
Download or read book Analysis of D0 -] K+ Pi- Pi0 Decays written by Michael Galante Wilson and published by . This book was released on 2005 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyzing D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays, herein are presented the methods and results of a search for D{sup 0}-{bar D}{sup 0} mixing, a measurement of the branching ratio R {equivalent_to} {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}{pi}{sup 0}), and measurements of the contributions from D{sup 0} {yields} K{sup +}{rho}{sup -}, K*{sup +}{pi}{sup -}, K*{sup 0}{pi}{sup 0}; 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider during 2000-2004 (Runs 1-4) are analyzed. An event-level tagging technique is developed, which facilitates the accurate determination of doubly Cabibbo-suppressed resonance contributions by suppressing background from Cabibbo-favored decays. The branching ratio is measured as R = (0.214 {+-} 0.008 (stat) {+-} 0.008 (syst))%, with (46.1 {+-} 3.3 (stat) {+-} 2.9 (syst))% of D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays proceeding through the channel D{sup 0} {yields} K*{sup +}{pi}{sup -}. The data are consistent with the null-D-mixing hypothesis at a confidence level of 10%, and the expected value of {+-} {radical}(x{sup 2} + y{sup 2}) is measured as -0.013 {+-} 0.010 (stat), indicating negative interference between mixing and doubly Cabibbo-suppressed decay. The expected value of the integrated mixing rate is (x{sup 2} + y{sup 2})/2 = (0.013 {+-} 0.013 (stat))%.
Book Synopsis Measurements of the Branching Fractions of Charged B Decays to K+-pi-+pi+- Final States by :
Download or read book Measurements of the Branching Fractions of Charged B Decays to K+-pi-+pi+- Final States written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results of searches for B-meson decays to K[sup+][pi][sup -][pi][sup+] with the BABAR detector. With a data sample of 61.6 million B[bar B] pairs, they measure the branching fractions and 90% confidence-level upper limits averaged over charge-conjugate states (the first error is statistical and the second is systematic):[Beta](B[sup+][yields] K*[sup 0](892)[pi][sup+])= (15.5[+-] 1.8[sub -4.0][sup+1.5]) x 10[sup -6], [Beta](B[sup+][yields] f[sub 0](980)K[sup+], f[sub 0][yields][pi][sup+][pi][sup -])= (9.2[+-] 1.2[sub -2.6][sup+2.1]) x 10[sup -6], [Beta](B[sup+][yields][bar D][sup 0][yields] K[sup+][pi][sup -])= (184.6[+-] 3.2[+-] 9.7) x 10[sup -6], [Beta](B[sup+][yields][rho][sup 0](770)K[sup+])
Book Synopsis Measurement of Neutral B Decay Branching Fractions to K[sub S][sup 0][pi][sup +][pi][sup -] Final States by :
Download or read book Measurement of Neutral B Decay Branching Fractions to K[sub S][sup 0][pi][sup +][pi][sup -] Final States written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The branching fractions for B[sup 0] --> K[sup 0][pi][sup +][pi][sup -], B[sup 0] --> K*[sup +][pi][sup -] and B[sup 0] --> D[sup -]( --> K[sub s][sup 0][pi][sup -])[pi][sup +] decaying to a K[sub s][sup 0][pi][sup +][pi][sup -] state have been measured and agree with previous measurements. The direct CP violating parameter A[sub K*[pi]] was measured for the decay B[sup 0] --> K*[sup +][pi][sup -] and is in agreement with the CLEO measurement, with no evidence of CP violation with the statistics used. Using larger datasets, one can extract amplitudes and relative phases of the resonant contributions to the Dalitz plot, with the possibility to observe new B-meson decays.
Book Synopsis Measurement of the Branching Fraction for B- --] D0 K*- by :
Download or read book Measurement of the Branching Fraction for B- --] D0 K*- written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the branching fraction for the decay B[sup -] [yields] D[sup 0]K*[sup -] using a sample of approximately 86 million B[bar B] pairs collected by the BABAR detector from e[sup +]e[sup -] collisions near the [Upsilon](4S) resonance. The D[sup 0] is detected through its decays to K[sup -] [pi][sup +], K[sup -][pi][sup +][pi][sup 0] and K[sup -] [pi][sup +][pi][sup -][pi][sup +], and the K*[sup -] through its decay to K[sub S][sup 0] [pi][sup -]. They measure the branching fraction to be [Beta](B[sup -] [yields] D[sup 0]K*[sup -]) = (6.3 [+-] 0.7(stat.) [+-] 0.5(syst.)) x 10[sup -4].
Book Synopsis Measurement of Branching Fractions of B0 Decays to K1(1270)+ Pi- and K1(1400)+ Pi- by :
Download or read book Measurement of Branching Fractions of B0 Decays to K1(1270)+ Pi- and K1(1400)+ Pi- written by and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the branching fraction of neutral B meson decaying to final states containing a K1 meson, i.e. K1(1270) and K1(1400), and a charged pion. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 454 million B{bar B} pairs produced in ee− annihilation. We measure the branching fraction?(B° → K1+?−) = (31.0 ± 2.7 ± 6.9) x 10−6, where the first error quoted is statistical and the second is systematic. In the framework of the K-matrix formalism used to describe these decays, we also set limits on the ratio of the production constants for the K1(1270)+ and K1(1400)+ mesons in B° decays.
Book Synopsis Measurements of Branching Fractions in B 2![phi]K and B 2![phi][pi] and Search for Direct CP Violation in B{sup {+-}} 2![phi]K{sup {+-}} by :
Download or read book Measurements of Branching Fractions in B 2![phi]K and B 2![phi][pi] and Search for Direct CP Violation in B{sup {+-}} 2![phi]K{sup {+-}} 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 authors present measurements of branching fractions in the b 2!s{bar s}s penguin-dominated decays B 2![phi]K and B° 2![phi]K° in a sample of approximately 89 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine [Beta](B+ 2![phi]K+) = (10.0{sub -0.8}{sup +0.9} ± 0.5) x 10−6 and [Beta](B° 2![phi]K°) = (8.4{sub -1.3}{sup +1.5} ± 0.5) x 10−6. Additionally, they measure the CP-violating charge asymmetry [Alpha]{sub CP}(B{sup ±} 2![phi]K{sup ±}) = 0.04 {+-} 0.09 {+-} 0.01, with a 90% confidence-level interval of [-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B+ 2![phi][pi]+, [Beta](B+ 2![phi][pi]+)
Book Synopsis Improved Measurements of Neutral B Decay Branching Fractions to K0s Pi+ Pi- and the Charge Asymmetry of B0 -] K*+ Pi- by : J. C. Chen
Download or read book Improved Measurements of Neutral B Decay Branching Fractions to K0s Pi+ Pi- and the Charge Asymmetry of B0 -] K*+ Pi- written by J. C. Chen and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors analyze the decay B{sup 0} {yields} K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} using a sample of 232 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. A maximum likelihood fit finds the following branching fractions: {Beta}(B{sup 0} {yields} K{sup 0}{pi}{sup +}{pi}{sup -}) = (43.0 {+-} 2.3 {+-} 2.3) x 10{sup -6}, {Beta}(B{sup 0} {yields} f{sub 0}({yields} {pi}{sup +}{pi}{sup -})K{sup 0}) = (5.5 {+-} 0.7 {+-} 0.5 {+-} 0.3) x 10{sup -6} and {Beta}(B{sup 0} {yields} K*{sup +}{pi}{sup -}) = (11.0 {+-} 1.5 {+-} 0.5 {+-} 0.5) x 10{sup -6}. For these results, the first uncertainty is statistical, the second is systematic, and the third (if present) is due to the effect of interference from other resonances. They also measure the CP-violating charge asymmetry in the decay B{sup 0} {yields} K*{sup +}{pi}{sup -}, {Alpha}{sub K*{pi}} = -0.11 {+-} 0.14 {+-} 0.05.
Book Synopsis Measurement of the Absolute Branching Fraction of D0 to K- Pi by :
Download or read book Measurement of the Absolute Branching Fraction of D0 to K- Pi written by and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors measure the absolute branching fraction for D° → K−? using partial reconstruction of {bar B}° → D*+Xl−{bar {nu}}{sub {ell}} decays, in which only the charged lepton and the pion from the decay D*+ → D°?+ are used. Based on a data sample of 230 million B{bar B} pairs collected at the?(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, they obtain?(D° → K−?+) = (4.007 ± 0.037 ± 0.070)%, where the first error is statistical and the second error is systematic.
Book Synopsis Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction by :
Download or read book Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the decay B− → J/?K−??− using 117 million B{bar B} events collected at the?(4S) resonance with the BaBar detector at the PEP-II e+e− asymmetric-energy storage ring. They measure the branching fractions?(B− → J/?K−?+?−) = (116 ± 7(stat.) ± 9(syst.)) x 10−5 and?(B− → X(3872)K−) x?(X(3872) → J/??+?−) = (1.28 ± 0.41) x 10−5 and find the mass of the X(3872) to be 3873.4 ± 1.4MeV/c2. They search for the h{sub c} narrow state in the decay B− → h{sub c} K−, h{sub c} → J/??+?− and for the decay B− → J/?D°?−, with D° → K−?+. They set the 90% C.L. limits?(B− → h{sub c}K−) x?(h{sub c} → J/??+?−)
Book Synopsis MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. by :
Download or read book MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 ---] PI+ PI-, K+ PI-, K+ K- DECAYS. 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 measurements of branching fractions and CP-violating asymmetries 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[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. From a time-independent fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][pi][sup+][pi][sup -])= (4.7[+-] 0.6[+-] 0.2) x 10[sup -6] and[Beta](B[sup 0][yields] K[sup+][pi][sup -])= (17.9[+-] 0.9[+-] 0.7) x 10[sup -6], where the first uncertainty is statistical and the second is systematic; the 90% confidence level upper limit[Beta](B[sup 0][yields] K[sup+]K[sup -])
Book Synopsis Measurements of Branching Fractions in B[yields][phi]K and B[yields][phi][pi] and Search for Direct CP Violation in B[sup[+-][yields][phi]K[sup[+-]. by :
Download or read book Measurements of Branching Fractions in B[yields][phi]K and B[yields][phi][pi] and Search for Direct CP Violation in B[sup[+-][yields][phi]K[sup[+-]. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of branching fractions in the b[yields] s[bar s]s penguin-dominated decays B[sup+][yields][phi]K[sup+] and B[sup 0][yields][phi]K[sup 0] in a sample of approximately 89 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine[Beta](B[sup+][yields][phi]K[sup+])= (10.0[sub -0.8][sup+0.9][+-] 0.5) x 10[sup -6] and[Beta](B[sup 0][yields][phi]K[sup 0])= (8.4[sub -1.3][sup+1.5][+-] 0.5) x 10[sup -6]. Additionally, they measure the CP-violating charge asymmetry[Alpha][sub CP](B[sup[+-]][yields][phi]K[sup[+-]])= 0.04[+-] 0.09[+-] 0.01, with a 90% confidence-level interval of[-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B[sup+][yields][phi][pi][sup+], [Beta](B[sup+][yields][phi][pi][sup+])
Book Synopsis Measurement of the Branching Fractions for B+ --] K*°pi by :
Download or read book Measurement of the Branching Fractions for B+ --] K*°pi written by and published by . This book was released on 2004 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary result of the branching fraction for the B meson decay to the final state K?−?+ via an intermediate K*° resonance using the sample of approximately 23 million B{bar B} mesons produced at the?(4S) resonance with the BABAR detector at the PEP II e+e− collider. The K*° was detected through the decay to the final state K+?−. The result of this analysis is?(B+ → K*°?+) = (15.5 ± 3.4 ± 1.8) x 10−6 where the first error is statistical and the second is systematic.
Book Synopsis Measurement of Branching Fraction and Dalitz Distribution for B0 to D(*)+/- K0 Pi-/+ Decays by :
Download or read book Measurement of Branching Fraction and Dalitz Distribution for B0 to D(*)+/- K0 Pi-/+ Decays 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 measurements of the branching fractions for the three-body decays B° → D{sup (*){-+}} K°[pi]{sup {+-}} and their resonant submodes B° → D{sup (*){-+}} K*{sup {+-}} using a sample of approximately 88 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric energy storage ring.
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