Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV

A search for the charmed baryon, Lambda /sub c//sup +/, has been carried out in inclusively measured Lambda /sup 0/ pi /sup +or-/ pi /sup +/ pi /sup -/ and K/sup -/ pi /sup +or-/p final states with longitudinal x>0.75 in an experiment at the CERN intersecting storage rings. An effect with invaria...

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Detalles Bibliográficos
Autores principales: Lockman, W, Erhan, S, Meyer, T, Rander, J, Schlein, P E, Webb, R, Zsembery, J
Lenguaje:eng
Publicado: 1979
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(79)91292-9
http://cds.cern.ch/record/875319
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author Lockman, W
Erhan, S
Meyer, T
Rander, J
Schlein, P E
Webb, R
Zsembery, J
author_facet Lockman, W
Erhan, S
Meyer, T
Rander, J
Schlein, P E
Webb, R
Zsembery, J
author_sort Lockman, W
collection CERN
description A search for the charmed baryon, Lambda /sub c//sup +/, has been carried out in inclusively measured Lambda /sup 0/ pi /sup +or-/ pi /sup +/ pi /sup -/ and K/sup -/ pi /sup +or-/p final states with longitudinal x>0.75 in an experiment at the CERN intersecting storage rings. An effect with invariant mass near 2.3 GeV is observed in Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/ with cross section times branching ratio B sigma =(2.8+or-1.0) mu b; a similar effect is observed in K/sup -/ pi /sup +/p with B sigma (2.3+or-0.3) mu b. The effect is seen only in the positive charge state, in agreement with an interpretation as Lambda /sub c//sup +/. However, it is pointed out that in the same experiment, the non-charmed hyperon state Sigma (1385)/sup +/ also has a cross section, much larger than its corresponding charge state Sigma (1385)/sup -/. (13 refs).
id cern-875319
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1979
record_format invenio
spelling cern-8753192019-09-30T06:29:59Zdoi:10.1016/0370-2693(79)91292-9http://cds.cern.ch/record/875319engLockman, WErhan, SMeyer, TRander, JSchlein, P EWebb, RZsembery, JEvidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeVParticle Physics - PhenomenologyA search for the charmed baryon, Lambda /sub c//sup +/, has been carried out in inclusively measured Lambda /sup 0/ pi /sup +or-/ pi /sup +/ pi /sup -/ and K/sup -/ pi /sup +or-/p final states with longitudinal x>0.75 in an experiment at the CERN intersecting storage rings. An effect with invariant mass near 2.3 GeV is observed in Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/ with cross section times branching ratio B sigma =(2.8+or-1.0) mu b; a similar effect is observed in K/sup -/ pi /sup +/p with B sigma (2.3+or-0.3) mu b. The effect is seen only in the positive charge state, in agreement with an interpretation as Lambda /sub c//sup +/. However, it is pointed out that in the same experiment, the non-charmed hyperon state Sigma (1385)/sup +/ also has a cross section, much larger than its corresponding charge state Sigma (1385)/sup -/. (13 refs).oai:cds.cern.ch:8753191979
spellingShingle Particle Physics - Phenomenology
Lockman, W
Erhan, S
Meyer, T
Rander, J
Schlein, P E
Webb, R
Zsembery, J
Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title_full Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title_fullStr Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title_full_unstemmed Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title_short Evidence for Lambda /sub c//sup +/ in inclusive pp to ( Lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+X and pp to (K/sup -/ pi /sup +/p)+X at square root s=53 and 62 GeV
title_sort evidence for lambda /sub c//sup +/ in inclusive pp to ( lambda /sup 0/ pi /sup +/ pi /sup +/ pi /sup -/)+x and pp to (k/sup -/ pi /sup +/p)+x at square root s=53 and 62 gev
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(79)91292-9
http://cds.cern.ch/record/875319
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