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Weak Decays Of The Charmed Baryon C Subscript O And The Inclusive Yield Of Lambda And P
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Book Synopsis Weak Decays of the Charmed Baryon C+[subscript O] and the Inclusive Yield of [lambda] and P by : J. G. Körner
Download or read book Weak Decays of the Charmed Baryon C+[subscript O] and the Inclusive Yield of [lambda] and P written by J. G. Körner and published by . This book was released on 1978 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inclusive Charmed Baryon [lambda] C+ and [sigma] C Production in B Meson Decays by : Michael Manfred Zoeller
Download or read book Inclusive Charmed Baryon [lambda] C+ and [sigma] C Production in B Meson Decays written by Michael Manfred Zoeller and published by . This book was released on 1994 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production and Decay of the Lambda C Charmed Baryon from Fermilab E791 by :
Download or read book Production and Decay of the Lambda C Charmed Baryon from Fermilab E791 written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented for the 500 GeV/c pion production asymmetry and polarization of the[Lambda][sub c] ([bar[Lambda]][sub c]) charmed baryon from Fermilab experiment E791. An analysis of the decay to the p[bar K][pi] final state is described. Resonant sub-channel fractions and phases are given and possible resonant effects in the low mass p[bar K] system discussed. Significant decay to[Lambda][sub c][yields][Delta][sup 2]K[sup -] establishes for the first time the importance of a W exchange mechanism in charmed baryon decay.
Book Synopsis Charmed Baryon Decays Observed in Ee− Annihilation at SPEAR. by :
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.
Book Synopsis Observation of Exclusive B Decays to Final States Containing a Charmed Baryon by :
Download or read book Observation of Exclusive B Decays to Final States Containing a Charmed Baryon written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected in the region of the[Upsilon](4S) resonance with the CLEO-II detector, they report on the first observation of exclusive decays of the B meson to final states with a charmed baryon. They have measured the branching fractions[Beta](B[sup -][yields][Lambda][sub c][sup+][bar p][pi][sup -])= (0.62[sub -0.20][sup+0.23][+-] 0.11[+-] 0.10) x 10[sup -3] and[Beta]([bar B][sup 0][yields][Lambda][sub c][sup+][bar p][pi][sup+][pi][sup -])= (1.33[sub -0.42][sup+0.46][+-] 0.31[+-] 0.21) x 10[sup -3]. In addition, they report upper limits for final states of the form[bar B][yields][Lambda][sub c][sup+][bar p](n[pi]) and[Lambda][sub c][sup+][bar p](n[pi])[pi][sup 0] where (n[pi]) denotes up to four charged pions.
Book Synopsis Charmed baryon [lambda][subscript]c+ decays with a [sigma]+ in the final state and decay asymmetry parameters by : Song Yang
Download or read book Charmed baryon [lambda][subscript]c+ decays with a [sigma]+ in the final state and decay asymmetry parameters written by Song Yang and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Observation of Inclusive B Decays to the Charmed Strange Baryons[Xi][sub C][sup 0] And[Xi][sub C][sup+]. by :
Download or read book First Observation of Inclusive B Decays to the Charmed Strange Baryons[Xi][sub C][sup 0] And[Xi][sub C][sup+]. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected in the region of the[Upsilon](4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), they present the first observation of B mesons decaying into the charmed strange baryons[Xi][sub c][sup 0] and[Xi][sub c][sup+]. The authors find 79[+-] 27[Xi][sub c][sup 0] and 125[+-] 28[Xi][sub c][sup+] candidates from B decays, leading to product branching fractions of[Beta]([bar B][yields][Xi][sub c][sup 0]X)[Beta]([Xi][sub c][sup 0][yields][Xi][sup -][pi][sup+])= (0.144[+-] 0.048[+-] 0.021) x 10[sup -3] and[Beta]([bar B][yields][Xi][sub c][sup+]X)[Beta]([Xi][sub c][sup+][yields][Xi][sup -][pi][sup+][pi][sup+])= (0.453[+-] 0.096[sub -0.065][sup+0.085]) x 10[sup -3].
Book Synopsis Decay Properties of the Charm Baryon [Lambda] [subscript C] by : Eric James Mannel
Download or read book Decay Properties of the Charm Baryon [Lambda] [subscript C] written by Eric James Mannel and published by . This book was released on 1991 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Decay Properties of the Charmed Baryon Charmed Positive Lambda Baryon by : C.E.K. Charlesworth
Download or read book A Study of the Decay Properties of the Charmed Baryon Charmed Positive Lambda Baryon written by C.E.K. Charlesworth and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The charmed baryon $\Lambda\sbsp{c}{+}$ has been observed using the ARGUS detector in the DORIS II $e\sp{+}e\sp-$ storage ring at DESY. The ARGUS experiment is a 4$\pi$ magnetic solenoidal detector used to observe $e\sp{+}e\sp-$ annihilations at center-of-mass energies around 10.4 GeV. We have studied 5 decays modes of the $\Lambda\sbsp{c}{+}$. The decay mode $\Lambda\sbsp{c}{+}\to pK\sp-\pi\sp+$ was used to measure the $\Lambda\sbsp{c}{+}$ fragmentation properties. A value of 0.24 $\pm$ 0.04 was found for the Peterson et al. parameter $\epsilon$, and the $\sigma(\Lambda\sbsp{c}{+}$) $\cdot\ BR(\Lambda\sbsp{c}{+}\to pK\sp-\pi\sp+$) was measured to be 12.0 $\pm$ 1.1 $\pm$ 1.3) pb. The decay modes $\Lambda\sbsp{c}{+}\to\Lambda\pi\sp+$ and $\Lambda\sbsp{c}{+}\to\Sigma\sp0\pi\sp+$ were also studied. In the former the asymmetry parameter $\alpha\sb{\Lambda\sb{c}}$ was measured to be $-$1.0 $\pm$ 0.5, indicating that parity is maximally violated in this decay. The two production cross section times branching ratios were measured to be (2.2 $\pm$ 0.3 $\pm$ 0.3) pb and (2.0 $\pm$ 0.7 $\pm$ 0.3) pb respectively. Finally, a search was made for evidence of W-exchange in the decay $\Lambda\sbsp{c}{+}\to\Xi\sp-K\sp+\pi\sp+$. This final state can arise through a simple spectator decay or via the more exotic W-exchange decay into $\Xi\sp{*0}K\sp+$, where the $\Xi\sp{*0}$ subsequently decays into $\Xi\sp-\pi\sp+$. The two body rate was measured to be (35 $\pm$ 17)% of the three body rate, indicating that a significant portion of the $\Xi\sp-K\sp+\pi\sp+$ final state may occur via W-exchange.
Book Synopsis Observation of a Charmed Baryon Decaying to D0 P at a Mass Near 2.94 GeV/c2 by : B. Aubert
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.
Book Synopsis Hadronic weak decays of the charmed doubly-strange baryon Ω0c [Omega 0 c] by : Zhongliang Ren
Download or read book Hadronic weak decays of the charmed doubly-strange baryon Ω0c [Omega 0 c] written by Zhongliang Ren and published by . This book was released on 1995 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis E691 Dalitz Plot Analysis of [Lambda][sub C][sup +] [yields] PK[sup [minus][pi][sup +] Decays by :
Download or read book E691 Dalitz Plot Analysis of [Lambda][sub C][sup +] [yields] PK[sup [minus][pi][sup +] Decays written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The resonant decays of the [Lambda][sub c][sup +] can give insight into the weak decay mechanism of this charmed baryon. We have performed a Dalitz plot analysis of the final state for a clean sample [Lambda][sub c][sup +] [yields] pK[sup [minus]][pi][sup +] decays observed in photoproduction experiment E691 at Fermilab. We measure [Gamma](pK*(892)[degrees])/[Gamma] (pK[sup [minus]][pi][sup +]) = .35 [plus minus] .09 [plus minus] .07. We also observe an unexpected enhancement at low pK- invariant mass.
Book Synopsis Hadronic weak decays of the charmed doubly-strange baryon _W63_1hn0_1tnc [Omega 0 c] by : Zhongliang Ren
Download or read book Hadronic weak decays of the charmed doubly-strange baryon _W63_1hn0_1tnc [Omega 0 c] written by Zhongliang Ren and published by . This book was released on 1995 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Inclusive [beta] Decays to the Charmed Strange Baryons [sigma]0,c and [sigma]+, C by : Horst Severini
Download or read book Measurement of Inclusive [beta] Decays to the Charmed Strange Baryons [sigma]0,c and [sigma]+, C written by Horst Severini and published by . This book was released on 1997 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadronic Weak Decays of the Charmed Doubly-strange Baryon Omega 0 C by : Zhongliang Ren
Download or read book Hadronic Weak Decays of the Charmed Doubly-strange Baryon Omega 0 C written by Zhongliang Ren and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Measurement of the Lambda-c Baryon Decays to Proton Kaon( - ) Pion(+) Absolute Branching Fraction with the BaBar Detector by :
Download or read book A Measurement of the Lambda-c Baryon Decays to Proton Kaon( - ) Pion(+) Absolute Branching Fraction with the BaBar Detector written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of [Beta]([Lambda][sub c][sup +] [yields] pK[sup -] [pi][sup +]) is presented based on data collected with the BaBar detector at the Stanford Linear Accelerator Center. Branching fraction measurements represent a large portion of what is known about short-lived particles, the strong force that binds them, and the weak force that causes them to decay. While the majority of branching fraction measurements are done as ratios between two decay modes, it is the absolute measurements of a few particular decay modes that set the scale for these relative measurements. The [Lambda][sub c][sup +] particle is one of the four weakly decaying hadrons into which more than 90% of the known heavy quark hadrons will eventually decay. Thus, an absolute measurement of the branching fraction for [Lambda][sub c][sup +] [yields] pK[sup -][pi][sup +] is important for many studies of the heavy quark sector, from spectroscopy to B meson decays. The number of produced [Lambda][sub c][sup +]'s is inferred from the number of events reconstructed with an antiproton and an accompanying D meson. The final result of [Beta]([Lambda][sub c][sup +] [yields] pK[sup -] [pi][sup +]) = [6.12 [+-] 0.31(stat.) [+-] 0.42(syst.)]% represents more than a two-fold improvement in precision over the world average. The dominant source of systematic uncertainty is the irreducible background of [Xi][sub c] baryons.
Book Synopsis A Measurement of the Lambda-c Baryon Decays to Proton Kaon( - ) Pion(+) Absolute Branching Fraction with the BaBar Detector by : C. Roat
Download or read book A Measurement of the Lambda-c Baryon Decays to Proton Kaon( - ) Pion(+) Absolute Branching Fraction with the BaBar Detector written by C. Roat and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of {Beta}({Lambda}{sub c}{sup +} {yields} pK{sup -} {pi}{sup +}) is presented based on data collected with the BaBar detector at the Stanford Linear Accelerator Center. Branching fraction measurements represent a large portion of what is known about short-lived particles, the strong force that binds them, and the weak force that causes them to decay. While the majority of branching fraction measurements are done as ratios between two decay modes, it is the absolute measurements of a few particular decay modes that set the scale for these relative measurements. The {Lambda}{sub c}{sup +} particle is one of the four weakly decaying hadrons into which more than 90% of the known heavy quark hadrons will eventually decay. Thus, an absolute measurement of the branching fraction for {Lambda}{sub c}{sup +} {yields} pK{sup -}{pi}{sup +} is important for many studies of the heavy quark sector, from spectroscopy to B meson decays. The number of produced {Lambda}{sub c}{sup +}'s is inferred from the number of events reconstructed with an antiproton and an accompanying D meson. The final result of {Beta}({Lambda}{sub c}{sup +} {yields} pK{sup -} {pi}{sup +}) = [6.12 {+-} 0.31(stat.) {+-} 0.42(syst.)]% represents more than a two-fold improvement in precision over the world average. The dominant source of systematic uncertainty is the irreducible background of {Xi}{sub c} baryons.