Evidence for W-exchange in charmed baryon decays

H. Albrecht; T. Hamacher; R. P. Hofmann; T. Kirchhoff; R. Mankel; A. Nau; S. Nowak; H. Schröder; H. D. Schulz; M. Walter; R. Wurth; C. Hast; H. Kapitza; H. Kolanoski; A. Kosche; A. Lange; A. Lindner; M. Schieber; T. Siegmund; B. Spaan; H. Thurn; D. Töpfer; D. Wegener; P. Eckstein; K. R. Schubert; R. Schwierz; R. Waldi; K. Reim; H. Wegener; P. Eckmanm; H. Kuipers; O. Mai; R. Mundt; T. Oest; R. Reiner; W. Schmidt-Parzefall; U. Becker; J. Stiewe; S. Werner; K. Ehret; W. Hofmann; A. Hüpper; K. T. Knöpfle; J. Spengler; C. E.K. Charlesworth; P. Krieger; D. B. MacFarlane; J. D. Prentice; P. R.B. Saull; S. C. Seidel; K. Tzamariudaki; R. G. Van de Water; T. S. Yoon; C. Frankl; D. Reßing; M. Schmidtler; M. Schneider; S. Weseler; G. Kernel; P. Križan; E. Križnič; T. Podobnik; T. Živko; V. Balagura; I. Belyaev; S. Chechelnitsky; M. Danilov; A. Droutskoy; Yu Gershtein; A. Golutvin; I. Korolko; G. Kostina; D. Litvintsev; V. Lubimov; P. Pakhlov; S. Semenov; A. Snizhko; I. Tichomirov; Yu Zaitsev

doi:10.1016/0370-2693(94)01513-C

Evidence for W-exchange in charmed baryon decays

H. Albrecht, T. Hamacher, R. P. Hofmann, T. Kirchhoff, R. Mankel, A. Nau, S. Nowak, H. Schröder, H. D. Schulz, M. Walter, R. Wurth, C. Hast, H. Kapitza, H. Kolanoski, A. Kosche, A. Lange, A. Lindner, M. Schieber, T. Siegmund, B. SpaanH. Thurn, D. Töpfer, D. Wegener, P. Eckstein, K. R. Schubert, R. Schwierz, R. Waldi, K. Reim, H. Wegener, P. Eckmanm, H. Kuipers, O. Mai, R. Mundt, T. Oest, R. Reiner, W. Schmidt-Parzefall, U. Becker, J. Stiewe, S. Werner, K. Ehret, W. Hofmann, A. Hüpper, K. T. Knöpfle, J. Spengler, C. E.K. Charlesworth, P. Krieger, D. B. MacFarlane, J. D. Prentice, P. R.B. Saull, S. C. Seidel, K. Tzamariudaki, R. G. Van de Water, T. S. Yoon, C. Frankl, D. Reßing, M. Schmidtler, M. Schneider, S. Weseler, G. Kernel, P. Križan, E. Križnič, T. Podobnik, T. Živko, V. Balagura, I. Belyaev, S. Chechelnitsky, M. Danilov, A. Droutskoy, Yu Gershtein, A. Golutvin, I. Korolko, G. Kostina, D. Litvintsev, V. Lubimov, P. Pakhlov, S. Semenov, A. Snizhko, I. Tichomirov, Yu Zaitsev

School of Arts and Sciences, Physics & Astronomy

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Using the detector ARGUS at the e⁺e^- storage ring DORIS II at DESY, we have observed the decays Λ_c⁺ → Ξ^-K⁺π⁺ and Λ_c⁺ → Ξ^*0K⁺ and obtained evidence for the decay Ξ_c⁰ → ΛK_s⁰. All three of these decays are of interest as they provide information about W-exchange processes. The products of cross sections and branching ratios for Λ_c⁺ → Ξ^-K⁺π⁺ and Λ_c⁺ → Ξ^*0K⁺ are (1.7±0.3±0.3) pb and (0.6±0.2±0.1) pb, respectively, which implies that (35±17) % of the Ξ^-K⁺π⁺ final state is generated through a two-body decay via intermediate W-exchange. The product of production cross section and branching ratio for Ξ_c⁰ → Λ K_s⁰ is (2.1 ± 1.0 ± 0.6) pb.

Original language	English (US)
Pages (from-to)	397-401
Number of pages	5
Journal	Physics Letters B
Volume	342
Issue number	1-4
DOIs	https://doi.org/10.1016/0370-2693(94)01513-C
State	Published - Jan 12 1995

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/0370-2693(94)01513-C

Cite this

Albrecht, H., Hamacher, T., Hofmann, R. P., Kirchhoff, T., Mankel, R., Nau, A., Nowak, S., Schröder, H., Schulz, H. D., Walter, M., Wurth, R., Hast, C., Kapitza, H., Kolanoski, H., Kosche, A., Lange, A., Lindner, A., Schieber, M., Siegmund, T., ... Zaitsev, Y. (1995). Evidence for W-exchange in charmed baryon decays. Physics Letters B, 342(1-4), 397-401. https://doi.org/10.1016/0370-2693(94)01513-C

@article{b91d2f77d2b84a34acfdce53d8781a0b,

title = "Evidence for W-exchange in charmed baryon decays",

abstract = "Using the detector ARGUS at the e+e- storage ring DORIS II at DESY, we have observed the decays Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ and obtained evidence for the decay Ξc0 → ΛKs0. All three of these decays are of interest as they provide information about W-exchange processes. The products of cross sections and branching ratios for Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ are (1.7±0.3±0.3) pb and (0.6±0.2±0.1) pb, respectively, which implies that (35±17) % of the Ξ-K+π+ final state is generated through a two-body decay via intermediate W-exchange. The product of production cross section and branching ratio for Ξc0 → Λ Ks0 is (2.1 ± 1.0 ± 0.6) pb.",

author = "H. Albrecht and T. Hamacher and Hofmann, {R. P.} and T. Kirchhoff and R. Mankel and A. Nau and S. Nowak and H. Schr{\"o}der and Schulz, {H. D.} and M. Walter and R. Wurth and C. Hast and H. Kapitza and H. Kolanoski and A. Kosche and A. Lange and A. Lindner and M. Schieber and T. Siegmund and B. Spaan and H. Thurn and D. T{\"o}pfer and D. Wegener and P. Eckstein and Schubert, {K. R.} and R. Schwierz and R. Waldi and K. Reim and H. Wegener and P. Eckmanm and H. Kuipers and O. Mai and R. Mundt and T. Oest and R. Reiner and W. Schmidt-Parzefall and U. Becker and J. Stiewe and S. Werner and K. Ehret and W. Hofmann and A. H{\"u}pper and Kn{\"o}pfle, {K. T.} and J. Spengler and Charlesworth, {C. E.K.} and P. Krieger and MacFarlane, {D. B.} and Prentice, {J. D.} and Saull, {P. R.B.} and Seidel, {S. C.} and K. Tzamariudaki and {Van de Water}, {R. G.} and Yoon, {T. S.} and C. Frankl and D. Re{\ss}ing and M. Schmidtler and M. Schneider and S. Weseler and G. Kernel and P. Kri{\v z}an and E. Kri{\v z}ni{\v c} and T. Podobnik and T. {\v Z}ivko and V. Balagura and I. Belyaev and S. Chechelnitsky and M. Danilov and A. Droutskoy and Yu Gershtein and A. Golutvin and I. Korolko and G. Kostina and D. Litvintsev and V. Lubimov and P. Pakhlov and S. Semenov and A. Snizhko and I. Tichomirov and Yu Zaitsev",

note = "Funding Information: 1 DESY, IfH Zeuthen. 2 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 054DO51P. 3 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 056DD11E 4 Supported by the German Bundesministerium fiir Forschung und Technologie, under contract number 054ER12E 5 Supported by the German Bundesministerium fiir Forschung und Technologie, under contract number 055HD21E 6 University of Toronto, Toronto, Ontario, Canada. 7 McGill University, Montreal, Quebec, Canada. 8 Supported by the Natural Sciences and Engineering Research Council, Canada. 9 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 055KAI IE 10 Supported by the Ministry of Science and Technology of the Republic of Slovenia and the Intemationales Bilro KfA, Jiilich. H All references to a specific charge state imply the charge conjugate state unless otherwise stated.",

year = "1995",

month = jan,

day = "12",

doi = "10.1016/0370-2693(94)01513-C",

language = "English (US)",

volume = "342",

pages = "397--401",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-4",

}

Albrecht, H, Hamacher, T, Hofmann, RP, Kirchhoff, T, Mankel, R, Nau, A, Nowak, S, Schröder, H, Schulz, HD, Walter, M, Wurth, R, Hast, C, Kapitza, H, Kolanoski, H, Kosche, A, Lange, A, Lindner, A, Schieber, M, Siegmund, T, Spaan, B, Thurn, H, Töpfer, D, Wegener, D, Eckstein, P, Schubert, KR, Schwierz, R, Waldi, R, Reim, K, Wegener, H, Eckmanm, P, Kuipers, H, Mai, O, Mundt, R, Oest, T, Reiner, R, Schmidt-Parzefall, W, Becker, U, Stiewe, J, Werner, S, Ehret, K, Hofmann, W, Hüpper, A, Knöpfle, KT, Spengler, J, Charlesworth, CEK, Krieger, P, MacFarlane, DB, Prentice, JD, Saull, PRB, Seidel, SC, Tzamariudaki, K, Van de Water, RG, Yoon, TS, Frankl, C, Reßing, D, Schmidtler, M, Schneider, M, Weseler, S, Kernel, G, Križan, P, Križnič, E, Podobnik, T, Živko, T, Balagura, V, Belyaev, I, Chechelnitsky, S, Danilov, M, Droutskoy, A, Gershtein, Y, Golutvin, A, Korolko, I, Kostina, G, Litvintsev, D, Lubimov, V, Pakhlov, P, Semenov, S, Snizhko, A, Tichomirov, I & Zaitsev, Y 1995, 'Evidence for W-exchange in charmed baryon decays', Physics Letters B, vol. 342, no. 1-4, pp. 397-401. https://doi.org/10.1016/0370-2693(94)01513-C

TY - JOUR

T1 - Evidence for W-exchange in charmed baryon decays

AU - Albrecht, H.

AU - Hamacher, T.

AU - Hofmann, R. P.

AU - Kirchhoff, T.

AU - Mankel, R.

AU - Nau, A.

AU - Nowak, S.

AU - Schröder, H.

AU - Schulz, H. D.

AU - Walter, M.

AU - Wurth, R.

AU - Hast, C.

AU - Kapitza, H.

AU - Kolanoski, H.

AU - Kosche, A.

AU - Lange, A.

AU - Lindner, A.

AU - Schieber, M.

AU - Siegmund, T.

AU - Spaan, B.

AU - Thurn, H.

AU - Töpfer, D.

AU - Wegener, D.

AU - Eckstein, P.

AU - Schubert, K. R.

AU - Schwierz, R.

AU - Waldi, R.

AU - Reim, K.

AU - Wegener, H.

AU - Eckmanm, P.

AU - Kuipers, H.

AU - Mai, O.

AU - Mundt, R.

AU - Oest, T.

AU - Reiner, R.

AU - Schmidt-Parzefall, W.

AU - Becker, U.

AU - Stiewe, J.

AU - Werner, S.

AU - Ehret, K.

AU - Hofmann, W.

AU - Hüpper, A.

AU - Knöpfle, K. T.

AU - Spengler, J.

AU - Charlesworth, C. E.K.

AU - Krieger, P.

AU - MacFarlane, D. B.

AU - Prentice, J. D.

AU - Saull, P. R.B.

AU - Seidel, S. C.

AU - Tzamariudaki, K.

AU - Van de Water, R. G.

AU - Yoon, T. S.

AU - Frankl, C.

AU - Reßing, D.

AU - Schmidtler, M.

AU - Schneider, M.

AU - Weseler, S.

AU - Kernel, G.

AU - Križan, P.

AU - Križnič, E.

AU - Podobnik, T.

AU - Živko, T.

AU - Balagura, V.

AU - Belyaev, I.

AU - Chechelnitsky, S.

AU - Danilov, M.

AU - Droutskoy, A.

AU - Gershtein, Yu

AU - Golutvin, A.

AU - Korolko, I.

AU - Kostina, G.

AU - Litvintsev, D.

AU - Lubimov, V.

AU - Pakhlov, P.

AU - Semenov, S.

AU - Snizhko, A.

AU - Tichomirov, I.

AU - Zaitsev, Yu

N1 - Funding Information: 1 DESY, IfH Zeuthen. 2 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 054DO51P. 3 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 056DD11E 4 Supported by the German Bundesministerium fiir Forschung und Technologie, under contract number 054ER12E 5 Supported by the German Bundesministerium fiir Forschung und Technologie, under contract number 055HD21E 6 University of Toronto, Toronto, Ontario, Canada. 7 McGill University, Montreal, Quebec, Canada. 8 Supported by the Natural Sciences and Engineering Research Council, Canada. 9 Supported by the German Bundesministedum fiir Forschung und Technologie, under contract number 055KAI IE 10 Supported by the Ministry of Science and Technology of the Republic of Slovenia and the Intemationales Bilro KfA, Jiilich. H All references to a specific charge state imply the charge conjugate state unless otherwise stated.

PY - 1995/1/12

Y1 - 1995/1/12

N2 - Using the detector ARGUS at the e+e- storage ring DORIS II at DESY, we have observed the decays Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ and obtained evidence for the decay Ξc0 → ΛKs0. All three of these decays are of interest as they provide information about W-exchange processes. The products of cross sections and branching ratios for Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ are (1.7±0.3±0.3) pb and (0.6±0.2±0.1) pb, respectively, which implies that (35±17) % of the Ξ-K+π+ final state is generated through a two-body decay via intermediate W-exchange. The product of production cross section and branching ratio for Ξc0 → Λ Ks0 is (2.1 ± 1.0 ± 0.6) pb.

AB - Using the detector ARGUS at the e+e- storage ring DORIS II at DESY, we have observed the decays Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ and obtained evidence for the decay Ξc0 → ΛKs0. All three of these decays are of interest as they provide information about W-exchange processes. The products of cross sections and branching ratios for Λc+ → Ξ-K+π+ and Λc+ → Ξ*0K+ are (1.7±0.3±0.3) pb and (0.6±0.2±0.1) pb, respectively, which implies that (35±17) % of the Ξ-K+π+ final state is generated through a two-body decay via intermediate W-exchange. The product of production cross section and branching ratio for Ξc0 → Λ Ks0 is (2.1 ± 1.0 ± 0.6) pb.

UR - http://www.scopus.com/inward/record.url?scp=0001012016&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001012016&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(94)01513-C

DO - 10.1016/0370-2693(94)01513-C

M3 - Article

AN - SCOPUS:0001012016

SN - 0370-2693

VL - 342

SP - 397

EP - 401

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-4

ER -

Evidence for W-exchange in charmed baryon decays

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this