Measurement Of The B0 To D D S And D S To Phi Pi Branching Fractions

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Dissertation Abstracts International

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Author :
language : en
Publisher:
Release Date : 1973

Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Dissertations, Academic categories.

Measurement Of B0 Ds D Branching Fractions And B0 Ds D Polarization With A Partial Reconstruction Technique

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of B0 Ds D Branching Fractions And B0 Ds D Polarization With A Partial Reconstruction Technique 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 a study of the decays B[sup 0][yields] D[sub s][sup (*)+] D*[sup -], using 20.8 fb[sup -1] of e[sup+]e[sup -] annihilation data recorded with the BABAR detector. The analysis is conducted with a partial reconstruction technique, in which only the D[sub s][sup (*)+] and the soft pion from the D*[sup -] decay are reconstructed. They measure the branching fractions[Beta](B[sup 0][yields] D[sub s][sup (*)+] D*[sup -])= (1.03[+-] 0.14[+-] 0.13[+-] 0.26)% and[Beta](B[sup 0][yields] D[sub s][sup (*)+] D*[sup -])= (1.97[+-] 0.15[+-] 0.30[+-] 0.49)%, where the first error is statistical, the second is systematic, and the third is the error due to the D[sub s][sup+][yields][phi][pi][sup+] branching fraction uncertainty. From the B[sup 0][yields] D[sub s][sup (*)+] D*[sup -] angular distributions, they measure the fraction of longitudinal polarization[Lambda][sub L]/[Lambda]= (51.9[+-] 5.0[+-] 2.8)%, which is consistent with theoretical predictions based on factorization.

Government Reports Annual Index

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Author :
language : en
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Release Date : 1986

Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Research categories.

Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

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.

Oil Paint And Drug Reporter And New York Druggists Price Current

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Author :
language : en
Publisher:
Release Date : 1930-07

Oil Paint And Drug Reporter And New York Druggists Price Current written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1930-07 with Chemical industry categories.

Vols. include the proceedings (some summarized, some official stenographic reports) of the National Wholesale Druggists' Association (called 18 -1882, Western Wholesale Druggists' Association) and of other similar organizations.

Measurement Of The Branching Fraction For D S Phi Pi

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of The Branching Fraction For D S 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 2003 with categories.

The authors present a model-independent measurement of[Beta](D[sub s][sup -][yields][phi][pi][sup -])/[Beta](D[sup 0][yields] K[sup -][pi][sup+]) by partially reconstructing the decay[bar B][sup 0][yields] D*[sup+]D*[sub s][sup -]. Using data collected with the CLEO II detector at CESR, they determine[Beta](D[sub s][sup -][yields][phi][pi][sup -])/[Beta](D[sup 0][yields] K[sup -][pi][sup+])= 0.92[+-] 0.20(stat.)[+-] 0.11(syst.). Their measurement of[Beta](D[sup 0][yields] K[sup -][pi][sup+]) then gives[Beta](D[sub s][sup -][yields][phi][pi][sup -])= (3.59[+-] 0.77[+-] 0.48)%.

Measurement Of The B0 To D D S And D S To Phi Pi Branching Fractions

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Author :
language : en
Publisher:
Release Date : 2005

Measurement Of The B0 To D D S And D S To Phi Pi Branching Fractions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.

The authors present measurements of the branching fractions?(B° → D*−D*{sub s}) and?(D{sub s}+ →??+), based on 123 x 106?(4S) → B{bar B} decays collected by the BABAR detector at the PEP-II asymmetric-energy e+e− B factory. A partial reconstruction technique is used to measure?(B° → D*−D*{sub s}+) and the decay chain is fully reconstructed to measure the branching fraction product?(B° → D*− D*{sub s}+) x?(D{sub s}+ →??+). Comparing these two measurements provides a model-independent determination of the D{sub s}+ →??+ branching fraction. They obtain?(B° → D*−D*{sub s}+) = (1.88 ± 0.09 ± 0.17)% and?(D{sub s}+ →??+) = (4.81 ± 0.52 ± 0.38)%, where the first uncertainties are statistical and the second systematic.

Branching Fraction Measurement Of B0 To D Pi And B To D 0pi And Isospin Analyses Of B To D Pi Decays

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Author : B. Aubert
language : en
Publisher:
Release Date : 2006

Branching Fraction Measurement Of B0 To D Pi And B To D 0pi And Isospin Analyses Of B To D Pi Decays written by B. Aubert 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 65 million {Upsilon}(4S) {yields} B{bar B} events collected with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring at the Stanford Linear Accelerator Center, they measure the color-favored branching fractions {Beta}({bar B}{sup 0} {yields} D{sup +}{pi}{sup -}) = (2.63 {+-} 0.05 {+-} 0.22) x 10{sup -3}, {Beta}({bar B}{sup 0} {yields} D*{sup +}{pi}{sup -}) = (2.79 {+-} 0.08 {+-} 0.18) x 10{sup -3}, {Beta}(B{sup -} {yields} D{sup 0}{pi}{sup -}) = (4.90 {+-} 0.07 {+-} 0.23) x 10{sup -3} and {Beta}(B{sup -} {yields} D*{sup 0} {pi}{sup -}) = (5.52 {+-} 0.17 {+-} 0.43) x 10{sup -3}, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay {bar B}{sup 0} {yields} D{sup (*)0}{pi}{sup 0}, the cosines of the strong phase difference {delta} between the I = 1/2 and I = 3/2 isospin amplitudes are determined to be cos{sigma} = 0.860{sub -0.006-0.028}{sup +0.007+0.029} for the {bar B} {yields} D{pi} process and cos{sigma} = 0.917{sub -0.016-0.051}{sup +0.018+0.059} for the {bar B} {yields} D*{pi} process. The results for cos{delta} suggest that final-state interactions are presented in the D{pi} system.

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.

Preventie Van Psychische Stoornissen

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Author :
language : en
Publisher:
Release Date : 1994

Preventie Van Psychische Stoornissen written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.