Measurement Of The B0 Lambda Bar P Pi Branching Fraction Andstudy Of The Decay Dynamics

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Measurement Of The B0 Lambda Bar P Pi Branching Fraction Andstudy Of The Decay Dynamics

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Author : M. Bondioli
language : en
Publisher:
Release Date : 2006

Measurement Of The B0 Lambda Bar P Pi Branching Fraction Andstudy Of The Decay Dynamics written by M. Bondioli 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.

We present a measurement of the B{sup 0} {center_dot} {bar {Lambda}}p{pi}{sup -} branching fraction performed using the BABAR detector at the PEP-II asymmetric energy e{sup +}e{sup -} collider. Based on a 232 million B{bar B} pairs data sample we measure: {center_dot} (B{sup 0} {center_dot} {bar {Lambda}}p{pi}{sup -}) = [3.30 {center_dot} 0.53(stat.) {center_dot} 0.31 (syst.)] {center_dot} 10{sup -6}. A measurement of the differential spectrum as a function of the di-baryon invariant mass m({Lambda}p) is also presented; this shows a near-threshold enhancement similar to that observed in other baryonic B decays.

High Energy Physics Index

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Author :
language : en
Publisher:
Release Date : 1987

High Energy Physics 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 1987 with Nuclear physics categories.

Government Reports Annual Index

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Author :
language : en
Publisher:
Release Date : 1988

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 1988 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 The B Rightarrow P Bar P K Branching Fraction And Study Of The Decay Dynamics

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Author :
language : en
Publisher:
Release Date : 2005

Measurement Of The B Rightarrow P Bar P K Branching Fraction And Study Of The Decay Dynamics 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.

With a sample of 232 x 106 [Upsilon](4S) 2!B{bar B} events collected with the BABAR detector, we study the decay B 2!p{bar p}K excluding charmonium decays to p{bar p}. We measure a branching fraction [Beta](B+ 2!p{bar p}K+) = (6.7 ± 0.5 ± 0.4) x 10−6. An enhancement at low p{bar p} mass is observed and the Dalitz plot asymmetry suggests dominance of the penguin amplitude in this B decay. We search for a pentaquark candidate [Theta]*{sup ++} decaying into pK+ in the mass range 1.43 to 2.00 GeV/c2 and set limits on [Beta](B+ 2![Theta]*{sup ++} {bar p}) x [Beta]([Theta]*{sup ++} 2!pK+) at the 10−7 level.

Recueil Factice D Articles De Presse Concernant Henriette Berthias

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Author :
language : en
Publisher:
Release Date :

Recueil Factice D Articles De Presse Concernant Henriette Berthias written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.

Measurement Of The Branching Fraction And Lambda Bar Polarization In B0 Lambda Par P Pi

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Author :
language : en
Publisher:
Release Date : 2009

Measurement Of The Branching Fraction And Lambda Bar Polarization In B0 Lambda Par P 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 2009 with categories.

We present a measurement of the B° → {bar ?}p?− branching fraction performed using the BABAR detector at the PEP-II asymmetric e+e− collider. Based on a sample of 467 x 106 B{bar B} pairs we measure ?(B° → {bar ?}p?−) [3.07 ± 0.31(stat.) ± 0.23(syst.)] x 10−6. The measured differential spectrum as a function of the dibaryon invariant mass m({bar ?}p) shows a near-threshold enhancement similar to that observed in other baryonic B decays. We study the {bar ?} polarization as a function of {bar ?} energy in the B° rest frame (E*{sub {bar ?}}) and compare it with theoretical expectations of fully longitudinally right-polarized {bar ?} at large E*{sub {bar ?}}.

Measurement Of The Branching Fraction Mathcal B Lambda0 B Rightarrow Lambda C Pi Pi Pi At Cdf

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Author :
language : en
Publisher:
Release Date : 2011

Measurement Of The Branching Fraction Mathcal B Lambda0 B Rightarrow Lambda C Pi Pi Pi At Cdf written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

We report an analysis of the?{sub b}° →?{sub c}?−?+?− decay in a data sample collected by the CDF II detector at the Fermilab Tevatron corresponding to 2.4 fb−1 of integrated luminosity. We reconstruct the currently largest samples of the decay modes?{sub b}° →?{sub c}(2595)+?− (with?{sub c}(2595)+ →?{sub c}+?+?−),?{sub b}° →?{sub c}(2625)+?− (with?{sub c}(2625)+ →?{sub c}+?+?−),?{sub b}° →?{sub c}(2455){sup ++}?−?− (with?{sub c}(2455){sup ++} →?{sub c}+?+), and?{sub b}° →?{sub c}(2455)0?+?− (with?{sub c}(2455)0 →?{sub c}+?−) and measure the branching fractions relative to the?{sub b}° →?{sub c}+?− branching fraction. We measure the ratio?(?{sub b}° →?{sub c}+?−?+?−)/?(?{sub b}° →?{sub c}+?−)=3.04 ± 0.33(stat){sub -0.55}{sup +0.70}(syst) which is used to derive?(?{sub b}° →?{sub c}+?−?+?−)=(26.8{sub -11.2}{sup +11.9}) x 10−3.

Measurement Of The Production Fraction Times Branching Fraction Boldsymbol F B To Lambda B Cdot Mathcal B Lambda B To J Psi Lambda

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Author :
language : en
Publisher:
Release Date : 2011

Measurement Of The Production Fraction Times Branching Fraction Boldsymbol F B To Lambda B Cdot Mathcal B Lambda B To J Psi Lambda written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

The [Lambda]{sub b}(udb) baryon is observed in the decay [Lambda]{sub b} → J/[psi][Lambda] using 6.1 fb−1 of p{bar p} collisions collected with the D0 detector at √s = 1.96 TeV. The production fraction multiplied by the branching fraction for this decay relative to that for the decay B° → J/[psi]K{sub s}° is measured to be 0.345 ± 0.034 (stat.) ± 0.033 (syst.) ± 0.003 (PDG). Using the world average value of f(b → B°) · [Beta](B° → J/[psi]K{sub s}°) = (1.74 ± 0.08) x 10−5, they obtain f(b → [Lambda]{sub b}) · [Beta]([Lambda]{sub b} → J/[psi][Lambda]) = (6.01 ± 0.60 (stat.) ± 0.58 (syst.) ± 0.28 (PDG)) x 10−5. This measurement represents an improvement in precision by about a factor of three with respect to the current world average.

Measurement Of The Branching Fractions Of Lambda C P Anti K N Pi

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of The Branching Fractions Of Lambda C P Anti K N 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.

Using data recorded by the CLEO-II detector at CESR, we report new measurements of the branching fractions for the decays of the charmed baryon[Lambda][sub c][sup+] into pK[sup -][pi][sup+][pi][sup 0], p[bar K][sup 0], p[bar K][sup 0][pi][sup+][pi][sup -], and p[bar K][sup 0][pi][sup 0], all measured relative to pK[sup -][pi][sup+]. The relative branching fractions are 0.67[+-] 0.04[+-] 0.11, 0.46[+-] 0.02[+-] 0.04, 0.52[+-] 0.04[+-] 0.05, and 0.66[+-] 0.05[+-] 0.07 respectively.

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.