Download or read book Observation of the charmed baryon A 1tnc Ac in e 1hn e 1hn annihilation at 10 GeV written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of the Charmed Baryon lambda c in E e Annihilation at 10 GeV written by ARGUS Collaboration and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Charmed Baryon Decays Observed in E e Annihilation at SPEAR written by Eric Nelson Vella and published by . This book was released on 1982 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of Charmed Baryons in E e Annihilations at 10GeV Center of Mass Energy microform written by Henry Cornelus Josepp Seywerd and published by National Library of Canada. This book was released on 1987 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of Charmed Strange omega 0 c Baryon in E e Collisions and First Observation of Charmed Strange Baryons xi c c s U and xi 0 c c s D written by Syed Basit Athar and published by . This book was released on 2001 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of a Charmed Baryon Decaying to D0 P at a Mass Near 2 94 GeV c2 written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for charmed baryons decaying to D{sup 0}p reveals two states: the {Lambda}{sub c}(2880){sup +} baryon and a previously unobserved state at a mass of [2939.8 {+-} 1.3 (stat.) {+-} 1.0 (syst.)] MeV/c{sup 2} and with an intrinsic width of [17.5 {+-} 5.2 (stat.) {+-} 5.9 (syst.)] MeV. Consistent and significant signals are observed for the K{sup -}{pi}{sup +} and K{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup +} decay modes of the D{sup 0} in 287 fb{sup -1} annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D{sup +}p spectrum of doubly-charged partners. The mass and intrinsic width of the {Lambda}{sub c}(2880){sup +} baryon and relative yield of the two baryons are also measured.

Download or read book Observation of the charmed baryon c c in e e 346 annihilations written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of a doubly charged charmed baryon in the reaction n63 r63 m63 1hn 346 S63 1tnc 1hn 1hn written by and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of Charmed Baryons in Ee Annihilation written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A resonance is observed in pK−.pi., anti pK.pi.−, pK/sub S/° and anti pK/sub S/° invariant-mass spectra at 2.285 +- 0.006 GeV/c2 which is associated with the lowest-lying charmed baryon (.lambda./sub c/). The Dalitz plot and limits on other modes and on the production of other states are presented. Measurements of inclusive p and .lambda. cross sections are also presented and allow an estimate of the branching ratios B(.lambda./sub c//sup +/ .-->. pK−.pi./sup +/) = (2.2 +- 1.0)% and B(.lambda./sub c//sup +/.-->. p anti K°) = (1.1 +- 0.7)%.

Download or read book Charmed and Strange Baryon Production in 29 GeV Electron Positron Annihilation written by Spencer Robert Klein and published by . This book was released on 1989 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of the Charmed Baryon sigma c in E e Annihilations written by ARGUS Collaboration and published by . This book was released on 1988 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of the charmed baryon S63 1tnc c in e 1hn e 1hn 346 annihilations written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Charmed and Strange Baryon Production in 29 GeV Positron Collisions written by Spencer Robert Klein and published by . This book was released on 1988 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First Observation of An Excited Charm Baryon Decaying to Omega Charm Baryon at the BaBar Experiment written by and published by . This book was released on 2006 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have carried out a search for a charmed baryon [Omega]$*\atop{c}$ decaying to [Omega]$0\atop{c}$ and a [gamma] where [Omega] c candidates are reconstructed using decay modes [Omega]-[pi]+(c1), [Omega]-[pi]+[pi]0(c2), [Omega]-[pi]+[pi]-[pi]+(c3) and [Xi]-K-[pi]+[pi]+(c4). This search is performed by analyzing integrated luminosity of 230.7 fb-1 data collected by the BABAR detector at the Stanford Linear Accelerator Center. In decay channel [Omega]$*\atop{c}$ → [Omega]$0\atop{c}$([Omega]-[pi]+)[gamma] (C1), we observe a signal yield of 39.2$+9.8\atop{-9.1}$ (stat)±6.0(syst) events with a significance of 4.2 standard deviations. In decay channels [Omega]$*\atop{c}$ → [Omega]$0\atop{c}$([Omega]-[pi]+[pi]0)[gamma] (C2) and [Omega]$*\atop{c}$ →} [Omega]$0\atop{c}$([Xi]-K-[pi]+[pi]+)[gamma] (C4), we observe signal yields of 55.2$+16.1\atop{-15.2}$ ± 5.6 and 20.2$+9.3\atop{-8.5}$ ± 3.1 with significances of 3.4 and 2.0 [sigma], respectively. As for the [Omega]$*\atop{c}$ → [Omega]$0\atop{c}$([Omega]-[pi]+[pi]-[pi]+)[gamma] (C3) decay channel, we observe signal yields of -5.1$+5.3.8\atop{-4.7}$±1.0 without a positive significance. We assume the same production mechanism for the four decay channels of [Omega]$*\atop{c}$ studied. By combining these four channels, the fit results in a signal yield of 105.3$+21.2\atop{-20.5}$± 6.0 events with a significance of 5.2 [sigma]. We report the mass difference [Omega]$*\atop{c}$ - [Omega]$0\atop{c}$([delta]m) of the singly charmed baryon [Omega]$*\atop{c}$ to be 70.8$+1.0\atop{-1.0}$±1.1 MeV. Finally, the ratios of production cross sections are calculated: [sigma](e+e-→C1)/[sigma](e+e-→c1) = 0.71$+0.19\atop{-0.18}$±0.11, [sigma](e+e-→C2)/[sigma](e+e-→c2) = 1.76$+0.71\atop{-0.69}$±0.19, [sigma](e+e-→C3)/[sigma](e+e-→c3) = -0.66$+0.74\atop{-0.66}$±0.13, [sigma](e+e-→C4)/[sigma](e+e-→c4) = 1.70{sup +1.0}{sub -1.0}±0.27 and [sigma](e+e-→[Omega]$*\atop{c}$ (combined))/[sigma](e+e-→[Omega]$0\atop{c}$) = 1.0$+0.23\atop{-0.22}$±0.11.

Download or read book Charmed Baryon Decays Observed in Ee Annihilation at SPEAR written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Various weak decays of the charmed baryon ..lambda../sub c/ are observed in the Mark II detector at the SLAC ee− storage ring SPEAR. Hadronic decays ..lambda../sub c/ ..-->.. pK−..pi..+ and ..lambda../sub c/+ ..-->.. pK/sub s/° and their conjugates are observed as peaks in invariant mass spectra at m(..lambda../sub c/) = (2286 +- 6) MeV/c2. An estimate of the charmed baryon production cross section, sigma(..lambda../sub c/) + sigma (anti ..lambda../sub c/) = (1.7 +- 0.4) nb, derived from Mark II measurements of the inclusive baryon cross sections R/sub p/ and R/sub ..lambda../ as functions of center-of-mass energy, is used to calculate branching ratios for these hadronic decays: BR (..lambda../sub c/+ ..-->.. p K− ..pi..+) = (2.0 +- 0.8)%; BR (..lambda../sub c//sup +/ ..-->.. p k/sub s/°)/BR (..lambda../sub c//sup +/ ..-->.. p K− ..pi../sup +/) = (36 +- 16)%. An attempt is also made to observe higher mass charmed baryons by reconstructing cascade decays ..sigma../sub c/ ..-->.. ..lambda../sub c/..pi ... Evidence for the observation of semileptonic decays of the charmed baryon is presented. Direct electrons are observed in events containing antiprotons, lambdas and antilambdas. The number of electrons per baryon event, after background subtraction and efficiency correction, is used, together with an estimate of the charmed baryon content of proton and lambda events, to calculate inclusive and semi-inclusive semileptonic branching ratios of the ..lambda../sub c.

Download or read book Observation of an Excited Charm Baryon Omega C Decaying to Omega 0 C Gamma written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the first observation of an excited singly-charmed baryon {Omega}*{sub c} (css) in the radiative decay {Omega}{sub c}{sup 0}{gamma}, where the {Omega}{sub c}{sup 0} baryon is reconstructed in the decays to the final states {Omega}{sup -}{pi}{sup +}, {Omega}{sup -} {pi}{sup +}{pi}{sup 0}, {Omega}{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup +}, and {Xi}{sup -} K{sup -} {pi}{sup +}{pi}{sup +}. This analysis is performed using a dataset of 230.7 fb{sup -1} collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. The mass difference between the {Omega}*{sub c} and the {Omega}{sub c}{sup 0} baryons is measured to be 70.8 {+-} 1.0(stat) {+-} 1.1(syst) MeV/c{sup 2}. They also measure the ratio of inclusive production cross sections of {Omega}*{sub c} and {Omega}{sub c}{sup 0} in e{sup +}e{sup -} annihilation.

Download or read book Observation of a doubly charged charmed baryon in the reaction written by and published by . This book was released on 1981 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: