Measurement Of The Mass And Width Of The Lambda C 2625 Charmed Baryon And The Branching Ratios Of Lambda C 2625 To Sigma 0c Pi And Lambda C 2625 To Sigma C Pi

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Measurement Of The Mass And Width Of The Lambda C 2625 Charmed Baryon And The Branching Ratios Of Lambda C 2625 To Sigma 0c Pi And Lambda C 2625 To Sigma C Pi

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Author : Dazhi Wang
language : en
Publisher:
Release Date : 2023

Measurement Of The Mass And Width Of The Lambda C 2625 Charmed Baryon And The Branching Ratios Of Lambda C 2625 To Sigma 0c Pi And Lambda C 2625 To Sigma C Pi written by Dazhi Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.

The mass of the [Lambda]c(2625)+, relative to the [Lambda]+c mass, is already relatively well known, but the large Belle data sample allows for a more precise measurement. No intrinsic width of the [Lambda]c(2625)+ has yet been measured, and the current upper limit [Gamma]

Measurements Of The Properties Of Lambda C 2595 Lambda C 2625 Sigma C 2455 And Sigma C 2520 Baryons

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Author :
language : en
Publisher:
Release Date : 2011

Measurements Of The Properties Of Lambda C 2595 Lambda C 2625 Sigma C 2455 And Sigma C 2520 Baryons 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 measurements of the resonance properties of [Lambda]c(2595)+ and [Lambda]c(2595)+ baryons in their decays to [Lambda]c+[pi]+[pi]- as well as [Sigma]c(2455)++,0 and [Sigma]c(2455)++,0 baryons in their decays to [Lambda]c+[pi]± final states. These measurements are performed using data corresponding to 5.2 fb-1 of integrated luminosity from pp̄ collisions at √s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. Exploiting the largest available charmed baryon sample, we measure masses and decay widths with uncertainties comparable to the world averages for [Sigma]c states, and significantly smaller uncertainties than the world averages for excited [Lambda]c+ states.

Observation Of Two Excited Charmed Baryons Decaying Into Lambda C Pi

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Author :
language : en
Publisher:
Release Date : 2003

Observation Of Two Excited Charmed Baryons Decaying Into Lambda C 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 evidence of a pair of excited charmed baryons, one decaying into[Lambda][sub c][sup+][pi][sup+] and the other into[Lambda][sub c][sup+][pi][sup -]. The doubly charged state has a measured mass difference M([Lambda][sub c][sup+][pi][sup+]) - M([Lambda][sub c][sup+]) of 234.5[+-] 1.1[+-] 0.8 MeV and a width of 17.9[sub -3.2][sup+3.8][+-] 4.0 MeV, and the neutral state has a measured mass difference M([Lambda][sub c][sup+][pi][sup -]) - M([Lambda][sub c][sup+]) of 232.6[+-] 1.0[+-] 0.8 MeV and a width of 13.0[sub -3.0][sup+3.7][+-] 4.0 MeV. We identify these states as[Sigma]*[sub c][sup++] and[Sigma]*[sub c][sup 0], the spin 3/2[sup+] excitations of the[Sigma][sub c] baryons.

Production Of The Charmed Strange Baryon Xi

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Author :
language : en
Publisher:
Release Date : 1986

Production Of The Charmed Strange Baryon Xi 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 categories.

We report on the observation of a narrow resonance at a mass of 2450 MeV/c2 in the final states .lambda. K−.pi./sup +/.pi./sup +/ and .sigma.°K−.pi./sup +/.pi./sup +/. The mass, width, lifetime, and decay modes support the interpretation of a hadronically produced charm-strange baryon, the .xi./sub c//sup +/. We present our preliminary measurements of the lifetime, and the .lambda., x/sub feynman, / and p/sub t/ dependence of the state.

Measurement Of Inclusive Production Of Lambda C And Sigma C Baryons In B Decays

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Author : Frank Reiner Wappler
language : en
Publisher:
Release Date : 2000

Measurement Of Inclusive Production Of Lambda C And Sigma C Baryons In B Decays written by Frank Reiner Wappler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Baryons categories.

Search For Sigma Sub C Yields Lambda Sub C Pi Using Lambda Sub C Yields Sigma Sub S Pi Pi In 250 Gev Pi Sup Minus Nucleon Interactions

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Author :
language : en
Publisher:
Release Date : 2001

Search For Sigma Sub C Yields Lambda Sub C Pi Using Lambda Sub C Yields Sigma Sub S Pi Pi In 250 Gev Pi Sup Minus Nucleon Interactions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

Combined cross section times branching fraction limits are given for[Sigma][sub c][sup+][sup+][r-arrow][Lambda][sub c][sup+][pi][sup+] and[Sigma][sub c][sup 0][r-arrow][Lambda][sub c][sup+][pi][sup[minus]] where[Lambda][sub c][sup+][r-arrow][Sigma][sub s][sup[plus-minus]][pi][sup[plus-minus]][pi][sup+]. The[Lambda][sub c][sup+] is reconstructed with partial information on the[Sigma][sub s]; the missing[Sigma][sub s] momentum is established through momentum conservation imposed by a constrained fit. The data are of[pi][sup[minus]] beam interactions at 250 GeV from Fermilab experiment E769.

Measurement Of Sigma Lambda B 0

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Author :
language : en
Publisher:
Release Date : 2006

Measurement Of Sigma Lambda B 0 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.

The authors present the first observation of the baryon decay?{sub b}° →?{sub c}?− followed by?{sub c}+ → pK−?+ in 106 pb−1 p{bar p} collisions at √s = 1.96 TeV in the CDF experiment. IN order to reduce systematic error, the measured rate for?{sub b}° decay is normalized to the kinematically similar meson decay {bar B}° → D+?− followed by D+ →?+K−?+. They report the ratio of production cross sections times the ratio of branching fractions for the momentum region integrated above p{sub T}> 6 GeV/c and pseudorapidity range.

Measurement Of The Lambda 0 B Lambda C Pi Branching Ratio

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Author : Yi Le
language : en
Publisher:
Release Date : 2003

Measurement Of The Lambda 0 B Lambda C Pi Branching Ratio written by Yi Le 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 measurement of the {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +} {pi}{sup -} branching ratio in p{bar p} collisions at {radical}s = 1.96 TeV using 65 pb{sup -1} data collected by the Collider Detector at Fermilab (CDF). The measurement starts from reconstructing two decay modes: {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -}, where {Lambda}{sub c}{sup +} {yields} p K{sup -} {pi}{sup +}; and {bar B}{sup 0} {yields} D{sup +}{pi}{sup -}, where D{sup +} {yields} {pi}{sup +} K{sup -} {pi}{sup +}. The authors obtained 96 {+-} 13 {Lambda}{sub b}{sup 0} and 321 {+-} 22 {bar B}{sup 0} candidates from the CDF Run II Two-Track Hadronic Trigger data sample. The relative branching ratio of the two decays is then measured based on the equation: f{sub {Lambda}{sub b}} BR({Lambda}{sub b} {yields} {Lambda}{sub c}{sup +} {pi}{sup -})/f{sub d} BR({bar B}{sup 0} {yields} D{sup +} {pi}{sup -}) = BR(D{sup +} {yields} K{pi}{pi}) N{sub {Lambda}{sub b}} {epsilon}{sub B{sup 0}}/BR({Lambda}{sub c}{sup +} {yields} pK{pi}) N{sub {bar B}{sup 0}} {epsilon}{sub {Lambda}{sub b}}. The measurement gives f{sub {Lambda}{sub b}} BR({Lambda}{sub b} {yields} {Lambda}{sub c}{sup +}{pi}{sup -})/f{sub d} BR({bar B}{sup 0} {yields} D{sup +}{pi}{sup -}) = 0.66 {+-} 0.11(stat) {+-} 0.09(syst) {+-} 0.18(BR). The {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -} branching ratio is then extracted, giving BR({Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -}) = (6.6 {+-} 1.2(stat.) {+-} 0.9(syst.) {+-} 2.3(BR+FR)) x 10{sup -3}. The {Lambda}{sub b}{sup 0} sample they reconstructed in this analysis is the largest fully reconstructed {Lambda}{sub b}{sup 0} sample in existence. The result they report here on the {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -} branching ratio is the world's first such measurement.

A Precision Measurement Of The Lambda C Baryon Mass

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Author : J. C. Chen
language : en
Publisher:
Release Date : 2005

A Precision Measurement Of The Lambda C Baryon Mass written by J. C. Chen 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 {Lambda}{sub c}{sup +} baryon mass is measured using {Lambda}{sub c}{sup +} {yields} {Lambda}K{sub S}{sup 0}K{sup +} and {Lambda}{sub c}{sup +} {yields} {Sigma}{sup 0}K{sub S}{sup 0}K{sup +} decays reconstructed in 232 fb{sup -1} of data collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. The {Lambda}{sub c}{sup +} mass is measured to be 2286.46 {+-} 0.14 MeV/c{sup 2}. The dominant systematic uncertainties arise from the amount of material in the tracking volume and from the magnetic field strength.

Studies Of Charmed Baryons Decaying To Lambda C N Pi

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Author : Jiu Zheng
language : en
Publisher:
Release Date : 1999

Studies Of Charmed Baryons Decaying To Lambda C N Pi written by Jiu Zheng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Baryons categories.