Determination Of The Branching Ratios B 0 D D S And Ds Ph63 Phi Pi

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Determination Of The Branching Ratios B 0 D D S And Ds Ph63 Phi Pi

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Author :
language : en
Publisher:
Release Date : 1990

Determination Of The Branching Ratios B 0 D D S And Ds Ph63 Phi Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Determination Of The Branching Ratios Of B 0 Becomes D D S And Ds Becomes Phi Pi

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Author : ARGUS Collaboration
language : en
Publisher:
Release Date : 1990

Determination Of The Branching Ratios Of B 0 Becomes D D S And Ds Becomes Phi Pi written by ARGUS Collaboration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Measurement Of The Branching Ratio Gamma D Sup Sub S D Sup Sub S Pi Sup 0 Gamma D Sup Sub S D Sup Sub S Gamma

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Author :
language : en
Publisher:
Release Date : 2004

Measurement Of The Branching Ratio Gamma D Sup Sub S D Sup Sub S Pi Sup 0 Gamma D Sup Sub S D Sup Sub S Gamma written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The authors have measured a preliminary value for the branching ratio (Gamma)(D*[sup +][sub s] --> D[sup +][sub s][pi][sup 0])/[Gamma](D*[sup +][sub s] --> D[sup +][sub s][gamma]) = 0.0621 [+-] 0.0049(stat) [+-] 0.0063(syst), which is consistent with the previous measurement, but has higher precision. They have also measured [Gamma](D*[sup 0] --> D[sup 0][pi][sup 0])/[Gamma](D*[sup 0] --> D[sup 0][gamma]) = 1.740 [+-] 0.020(stat) [+-] 0.125(syst), which is more precise than, and in agreement with, the world average. The branching fraction B(D*[sup +][sub s] --> D[sup +][sub s][pi][sup 0]) = 0.0585 [+-] 0.0043(stat) [+-] 0.0056(syst) is larger than the theoretical prediction, which is in the 1-3% range. However, it should be noted that the theory predicts a strong correlation between B(D*[sup +][sub s] --> D[sup +][sub s][pi][sup 0]) and B(D*[sup +] --> D[sup +][gamma]); for B(D*[sup +] --> D[sup +][gamma]) [approx]1%, B(D*[sup +][sub s] -- D[sup +][sub s][pi][sup 0]) is expected to be greatly enhanced.

Measurement Of Beta B Sup 0 Yields D Sub S Sup D Sup And Determination Of The D Sub S Sup Yields Phi Pi Sup Branching Fraction With A Partial Reconstruction Method

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of Beta B Sup 0 Yields D Sub S Sup D Sup And Determination Of The D Sub S Sup Yields Phi Pi Sup Branching Fraction With A Partial Reconstruction Method written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

The authors present model-independent measurements of the branching fractions[Beta](B[sup 0][yields] D*[sub s][sup+] D*[sup -]) and[Beta](D[sub s][sup+][yields][phi][pi][sup+]) based on 19.3 fb[sup -1] of data collected by the BABAR detector at the PEP-II e[sup+]e[sup -] B Factory. Neutral B-meson decays to the D*[sub s][sup+]D*[sup -] final state are selected with a partial reconstruction of the D*[sub s][sup+]; that is, only the D*[sup -] and the soft photon from the decay D*[sub s][sup+][yields] D[sub s][sup+][gamma] are reconstructed. The branching fraction[Beta](B[sup 0][yields] D*[sub s][sup+] D*[sup -]) is extracted from these event yields, while[Beta](D[sub s][sup+][yields][phi][pi][sup+]) is determined by combining this result with a previous measurement of the product[Beta](B[sup 0][yields] D*[sub s][sup+] D*[sup -]) x[Beta](D[sub s][sup+][yields][phi][pi][sup+]) with partial reconstruction of the D*[sup -]. They obtain the following preliminary results:[Beta](B[sup 0][yields] D*[sub s][sup+] D*[sup -])= (1.50[+-] 0.16[+-] 0.12)%, [Beta](D[sub s][sup+][yields][phi][pi][sup+])= (4.7[+-] 0.6[+-] 0.8)% where the first error is statistical, and the second systematic.

Measurement Of Branching Ratio D0 K Pi Using Partial Reconstruction Of Anti B D X Lepton Anti Neutrino

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of Branching Ratio D0 K Pi Using Partial Reconstruction Of Anti B D X Lepton Anti Neutrino written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

We present a measurement of the absolute branching fraction for D[sup 0][yields] K[sup -][pi][sup+] using the reconstruction of the decay chain[bar B][yields] D*[sup+]X[ell][sup -][bar[nu]], D*[sup+][yields] D[sup 0][pi][sup+] where only the lepton and the low-momentum pion from the D*[sup+] are detected. With data collected by the CLEO II detector at the Cornell Electron Storage Ring, we have determined Br(D[sup 0][yields] K[sup -][pi][sup+])=[3.81[+-] 0.15(stat.)[+-] 0.16(syst.)]%.

Determination Of The Branching Ratios B 1hn0 D 1hn 1hn D 1hn 1tns 1hn And D 1tns Ph63 P63 Phi Pi

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Author :
language : en
Publisher:
Release Date : 1990

Determination Of The Branching Ratios B 1hn0 D 1hn 1hn D 1hn 1tns 1hn And D 1tns Ph63 P63 Phi Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Measurement Of The Branching Ratio For D Sup Yields Bar K 892 Degrees Mu Sup Nu

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Author :
language : en
Publisher:
Release Date : 1992

Measurement Of The Branching Ratio For D Sup Yields Bar K 892 Degrees Mu Sup Nu written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.

The branching ratio for the decay mode D[sup +] [yields] [bar K]*[sup 0] [mu][sup +][nu] has been measured with two methods. The first uses D[sup 0] [yields] [bar K] [sup [minus]][mu][sup +][nu] for normalization, and yields the result B(D[sup +] [yields] [bar K]*[sup 0] [mu][sup +][nu] = (3.25 [plus minus] 0.71 [plus minus] 0.75)%. From this method we also obtain the direct measurement [Gamma](D[sup +] [yields][bar K]*[sup 0][mu][sup +] [nu]/[Gamma](D[sup 0] [yields] K[sup [minus]] [mu][sup +] [nu]) = 0.43 [plus minus] 0.09 [plus minus] 0.09. The second method uses the mode D[sup +] [yields] K[sup [minus]][pi][sup +] [pi][sup +] for normalization and yields B(D[sup +] [yields] [bar K]*[sup 0] [mu][sup +][nu]) = 4.18 [plus minus] 0.66 [plus minus]0.96)%. Combining the results of the two methods yields B(D[sup +] [yields] [bar K]*[sup 0][mu][sup +][nu]) = 3.57 [plus minus] 0.96)%.

Measurement Of Beta B Sup 0 Yields D Sub S Sup D Sup And Determination Of The D Sub S Sup Yields Phi Pi Sup Branching Fraction With A Partial Reconstruction Method

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Author : Roberto Covarelli
language : en
Publisher:
Release Date : 2003

Measurement Of Beta B Sup 0 Yields D Sub S Sup D Sup And Determination Of The D Sub S Sup Yields Phi Pi Sup Branching Fraction With A Partial Reconstruction Method written by Roberto Covarelli and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

The authors present model-independent measurements of the branching fractions {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) and {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) based on 19.3 fb{sup -1} of data collected by the BABAR detector at the PEP-II e{sup +}e{sup -} B Factory. Neutral B-meson decays to the D*{sub s}{sup +}D*{sup -} final state are selected with a partial reconstruction of the D*{sub s}{sup +}; that is, only the D*{sup -} and the soft photon from the decay D*{sub s}{sup +} {yields} D{sub s}{sup +}{gamma} are reconstructed. The branching fraction {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) is extracted from these event yields, while {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) is determined by combining this result with a previous measurement of the product {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) x {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) with partial reconstruction of the D*{sup -}. They obtain the following preliminary results: {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) = (1.50 {+-} 0.16 {+-} 0.12)%, {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) = (4.7 {+-} 0.6 {+-} 0.8)% where the first error is statistical, and the second systematic.

Measurement Of The Ratios Of The Branching Fractions Beta B0 Sigma D Sigma Pi Pi Pi Beta B0 D Pi Pi Pi And Beta B0 Sigma D Sigma Pi Beta B0 D Pi Pi Pi With The Cdf Detector

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Author : Arkadiy Bolshov
language : en
Publisher:
Release Date : 2007

Measurement Of The Ratios Of The Branching Fractions Beta B0 Sigma D Sigma Pi Pi Pi Beta B0 D Pi Pi Pi And Beta B0 Sigma D Sigma Pi Beta B0 D Pi Pi Pi With The Cdf Detector written by Arkadiy Bolshov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

We present the measurement of the ratios of branching fractions B... to B..., and B... to B... We analyze data taken with the CDF II detector that corresponds to an integrated luminosity of 355 pb - 1 in pp collisions at ... TeV at the Fermilab Tevatron. Using a novel displaced track trigger we reconstruct 494 ± 28 B... decays, 8098 ± 114 B... decays, 159 ± 17 B... decays, and 3288 ± 76 B... decays. Using the world average value of the ... production ratio fs/fd = 0.259 ± 0.038, we determine the ratios of branching fractions ... where the uncertainties labeled BR and PR refer to the uncertainty on the D meson branching fractions and the production ratio fs/fd, respectively.

Measurement Of The Ratios Of Branching Fractions B Bs Ds Pi Pi Pi

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Author :
language : en
Publisher:
Release Date : 2006

Measurement Of The Ratios Of Branching Fractions B Bs Ds Pi Pi Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

Using 355 pb−1 of data collected by the CDF II detector in p{bar p} collisions at √s = 1.96 TeV at the Fermilab Tevatron, they study the fully reconstructed hadronic decays B{sub (s)}° → D{sub (s)}−? and B{sub (s)}° → D{sub (s)}−?+?+?−. They present the first measurement of the ratio of branching fractions?(B{sub s}° → D{sub s}−?+?+?−)/?(B° → D−?+?+?−) = 1.05 ± 0.10(stat.) ± 0.22(syst.). They also update their measurement of?(B{sub s}° → D{sub s}−?+)/?(B° → D−?+) to 1.13 ± 0.08(stat.) ± 0.23(syst.) improving the statistical uncertainty by more than a factor of two. They find?(B{sub s}° → D{sub s}−?+) = [3.8 ± 0.3(stat.) ± 1.3(syst.)] x 10−3 and?(B{sub s}° → D{sub s}−?+?+?−) = [8.4 ± 0.8(stat.) ± 3.2(syst.)] x 10−3.