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Title: Confirmation of the existence of the. sigma. /sub c/ /sup + +/ and. lambda. /sub c/ /sup +/ charmed baryons and observation of the decay. lambda. /sub c/ /sup +/. -->. lambda pi. /sup +/ and K-bar/sup 0/p

Abstract

In a broadband neutrino exposure of the Fermilab 15-ft bubble chamber, we observe the production of the ..sigma../sub c/ /sup + +/(2426) charmed baryon followed by its decay to ..lambda../sub c/ /sup +/(2260) and ..pi../sup +/. We find the mass of the ..lambda../sub c/ /sup +/ to be 2257 +- 10 MeV and the m (..sigma../sub c/ /sup + +/) - m (..lambda../sub c/ /sup +/) mass difference to be 168 +- 3 MeV. Previously unseen two-body decay modes of the ..lambda../sub c/ /sup +/(2260) are observed.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Columbia University, New York, New York 10027
OSTI Identifier:
6247716
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.; (United States)
Additional Journal Information:
Journal Volume: 42:26
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CHARM PARTICLES; PARTICLE PRODUCTION; LAMBDA-2250 RESONANCES; HADRONIC PARTICLE DECAY; MASS; NEON; NEUTRINO REACTIONS; NEUTRINO-PROTON INTERACTIONS; MASS SPECTRA; BRANCHING RATIO; BUBBLE CHAMBERS; MUON NEUTRINOS; BARYON RESONANCES; BARYONS; CHARMED BARYON RESONANCES; DECAY; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; GAS TRACK DETECTORS; HADRONS; INTERACTIONS; LEPTON REACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; NEUTRINO-NUCLEON INTERACTIONS; NEUTRINOS; NONMETALS; NUCLEAR REACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; POSTULATED PARTICLES; RADIATION DETECTORS; RARE GASES; RESONANCE PARTICLES; SPECTRA; Y RESONANCES; 645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties; 651425 - Nuclear Properties & Reactions, A=20-38, Experimental- Nuclear Reactions & Scattering- (-1987)

Citation Formats

Baltay, C, Caroumbalis, D, French, H, Hibbs, M, Hylton, R, Kalelkar, M, Shastri, K, Vogel, A, Cnops, A M, Connolly, P L, Kahn, S A, Kirk, H G, Murtagh, M J, Palmer, R B, Samios, N P, and Tanaka, M. Confirmation of the existence of the. sigma. /sub c/ /sup + +/ and. lambda. /sub c/ /sup +/ charmed baryons and observation of the decay. lambda. /sub c/ /sup +/. -->. lambda pi. /sup +/ and K-bar/sup 0/p. United States: N. p., 1979. Web. doi:10.1103/PhysRevLett.42.1721.
Baltay, C, Caroumbalis, D, French, H, Hibbs, M, Hylton, R, Kalelkar, M, Shastri, K, Vogel, A, Cnops, A M, Connolly, P L, Kahn, S A, Kirk, H G, Murtagh, M J, Palmer, R B, Samios, N P, & Tanaka, M. Confirmation of the existence of the. sigma. /sub c/ /sup + +/ and. lambda. /sub c/ /sup +/ charmed baryons and observation of the decay. lambda. /sub c/ /sup +/. -->. lambda pi. /sup +/ and K-bar/sup 0/p. United States. https://doi.org/10.1103/PhysRevLett.42.1721
Baltay, C, Caroumbalis, D, French, H, Hibbs, M, Hylton, R, Kalelkar, M, Shastri, K, Vogel, A, Cnops, A M, Connolly, P L, Kahn, S A, Kirk, H G, Murtagh, M J, Palmer, R B, Samios, N P, and Tanaka, M. Mon . "Confirmation of the existence of the. sigma. /sub c/ /sup + +/ and. lambda. /sub c/ /sup +/ charmed baryons and observation of the decay. lambda. /sub c/ /sup +/. -->. lambda pi. /sup +/ and K-bar/sup 0/p". United States. https://doi.org/10.1103/PhysRevLett.42.1721.
@article{osti_6247716,
title = {Confirmation of the existence of the. sigma. /sub c/ /sup + +/ and. lambda. /sub c/ /sup +/ charmed baryons and observation of the decay. lambda. /sub c/ /sup +/. -->. lambda pi. /sup +/ and K-bar/sup 0/p},
author = {Baltay, C and Caroumbalis, D and French, H and Hibbs, M and Hylton, R and Kalelkar, M and Shastri, K and Vogel, A and Cnops, A M and Connolly, P L and Kahn, S A and Kirk, H G and Murtagh, M J and Palmer, R B and Samios, N P and Tanaka, M},
abstractNote = {In a broadband neutrino exposure of the Fermilab 15-ft bubble chamber, we observe the production of the ..sigma../sub c/ /sup + +/(2426) charmed baryon followed by its decay to ..lambda../sub c/ /sup +/(2260) and ..pi../sup +/. We find the mass of the ..lambda../sub c/ /sup +/ to be 2257 +- 10 MeV and the m (..sigma../sub c/ /sup + +/) - m (..lambda../sub c/ /sup +/) mass difference to be 168 +- 3 MeV. Previously unseen two-body decay modes of the ..lambda../sub c/ /sup +/(2260) are observed.},
doi = {10.1103/PhysRevLett.42.1721},
url = {https://www.osti.gov/biblio/6247716}, journal = {Phys. Rev. Lett.; (United States)},
number = ,
volume = 42:26,
place = {United States},
year = {1979},
month = {6}
}