Evidence of the Cabibbo-suppressed decay Λc+ → pK-K+

P. L. Frabetti; H. W.K. Cheung; J. P. Cumalat; C. Dallapiccola; J. F. Ginkel; S. V. Greene; W. E. Johns; M. S. Nehring; J. N. Butler; S. Cihangir; I. Gaines; P. H. Garbincius; L. Garren; S. A. Gourlay; D. J. Harding; P. Kasper; A. Kreymer; P. Lebrun; S. Shukla; M. Vittone; S. Bianco; F. L. Fabbri; S. Sarwar; A. Zallo; R. Culbertson; R. W. Gardner; R. Greene; J. Wiss; G. Alimonti; G. Bellini; B. Caccianiga; L. Cinquini; M. Di Corato; M. Giammarchi; P. Inzani; F. Leveraro; S. Malvezzi; D. Menasce; E. Meroni; L. Moroni; D. Pedrini; L. Perasso; A. Sala; S. Sala; D. Torretta; D. Buchholz; D. Claes; B. Gobbi; B. O'Reilly; J. M. Bishop; N. M. Cason; C. J. Kennedy; G. N. Kim; T. F. Lin; D. L. Puseljic; R. C. Ruchti; W. D. Shephard; J. A. Swiatek; Z. Y. Wu; V. Arena; G. Boca; C. Castoldi; G. Gianini; S. P. Ratti; C. Riccardi; P. Vitulo; A. Lopez; G. P. Grim; V. S. Paolone; P. M. Yager; J. R. Wilson; P. D. Sheldon; F. Davenport; J. F. Filaseta; G. R. Blackett; M. Pisharody; T. Handler; B. G. Cheon; J. S. Kang; K. Y. Kim

doi:10.1016/0370-2693(93)91267-Q

Evidence of the Cabibbo-suppressed decay Λ_c⁺ → pK^-K⁺

P. L. Frabetti, H. W.K. Cheung, J. P. Cumalat, C. Dallapiccola, J. F. Ginkel, S. V. Greene, W. E. Johns, M. S. Nehring, J. N. Butler, S. Cihangir, I. Gaines, P. H. Garbincius, L. Garren, S. A. Gourlay, D. J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. VittoneS. Bianco, F. L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R. W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J. M. Bishop, N. M. Cason, C. J. Kennedy, G. N. Kim, T. F. Lin, D. L. Puseljic, R. C. Ruchti, W. D. Shephard, J. A. Swiatek, Z. Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S. P. Ratti, C. Riccardi, P. Vitulo, A. Lopez, G. P. Grim, V. S. Paolone, P. M. Yager, J. R. Wilson, P. D. Sheldon, F. Davenport, J. F. Filaseta, G. R. Blackett, M. Pisharody, T. Handler, B. G. Cheon, J. S. Kang, K. Y. Kim

Physics

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

Abstract

We report evidence for the Cabibbo-suppressed decay of the charm baryon Λ_c⁺ into the final state pK^-K⁺. The analysis is performed on data collected by high energy photoproduction experiment E687 during the 1990-1991 Fermilab fixed target run. The branching ratio of the decay Λ_c⁺ → pK^-K⁺ relative to the non-suppressed Λ_c⁺ → pK^-π⁺ is measured to be BR(pK^-K⁺/pK^-π⁺) = 0.096 ± 0.029 ± 0.010. The upper limit of the decay into pø relative to the inclusive pK^-K⁺ decay is measured to be BR(pø/pK^-K⁺ < 58% at the 90% confidence level.

Original language	English (US)
Pages (from-to)	477-481
Number of pages	5
Journal	Physics Letters B
Volume	314
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(93)91267-Q
State	Published - Sep 23 1993

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Frabetti, P. L., Cheung, H. W. K., Cumalat, J. P., Dallapiccola, C., Ginkel, J. F., Greene, S. V., Johns, W. E., Nehring, M. S., Butler, J. N., Cihangir, S., Gaines, I., Garbincius, P. H., Garren, L., Gourlay, S. A., Harding, D. J., Kasper, P., Kreymer, A., Lebrun, P., Shukla, S., ... Kim, K. Y. (1993). Evidence of the Cabibbo-suppressed decay Λ_c⁺ → pK^-K⁺. Physics Letters B, 314(3-4), 477-481. https://doi.org/10.1016/0370-2693(93)91267-Q

Frabetti, PL, Cheung, HWK, Cumalat, JP, Dallapiccola, C, Ginkel, JF, Greene, SV, Johns, WE, Nehring, MS, Butler, JN, Cihangir, S, Gaines, I, Garbincius, PH, Garren, L, Gourlay, SA, Harding, DJ, Kasper, P, Kreymer, A, Lebrun, P, Shukla, S, Vittone, M, Bianco, S, Fabbri, FL, Sarwar, S, Zallo, A, Culbertson, R, Gardner, RW, Greene, R, Wiss, J, Alimonti, G, Bellini, G, Caccianiga, B, Cinquini, L, Di Corato, M, Giammarchi, M, Inzani, P, Leveraro, F, Malvezzi, S, Menasce, D, Meroni, E, Moroni, L, Pedrini, D, Perasso, L, Sala, A, Sala, S, Torretta, D, Buchholz, D, Claes, D, Gobbi, B, O'Reilly, B, Bishop, JM, Cason, NM, Kennedy, CJ, Kim, GN, Lin, TF, Puseljic, DL, Ruchti, RC, Shephard, WD, Swiatek, JA, Wu, ZY, Arena, V, Boca, G, Castoldi, C, Gianini, G, Ratti, SP, Riccardi, C, Vitulo, P, Lopez, A, Grim, GP, Paolone, VS, Yager, PM, Wilson, JR, Sheldon, PD, Davenport, F, Filaseta, JF, Blackett, GR, Pisharody, M, Handler, T, Cheon, BG, Kang, JS & Kim, KY 1993, 'Evidence of the Cabibbo-suppressed decay Λ_c⁺ → pK^-K⁺', Physics Letters B, vol. 314, no. 3-4, pp. 477-481. https://doi.org/10.1016/0370-2693(93)91267-Q

@article{d16cf875589b4b279d4bb5b63286eb65,

title = "Evidence of the Cabibbo-suppressed decay Λc+ → pK-K+",

abstract = "We report evidence for the Cabibbo-suppressed decay of the charm baryon Λc+ into the final state pK-K+. The analysis is performed on data collected by high energy photoproduction experiment E687 during the 1990-1991 Fermilab fixed target run. The branching ratio of the decay Λc+ → pK-K+ relative to the non-suppressed Λc+ → pK-π+ is measured to be BR(pK-K+/pK-π+) = 0.096 ± 0.029 ± 0.010. The upper limit of the decay into p{\o} relative to the inclusive pK-K+ decay is measured to be BR(p{\o}/pK-K+ < 58% at the 90% confidence level.",

author = "Frabetti, {P. L.} and Cheung, {H. W.K.} and Cumalat, {J. P.} and C. Dallapiccola and Ginkel, {J. F.} and Greene, {S. V.} and Johns, {W. E.} and Nehring, {M. S.} and Butler, {J. N.} and S. Cihangir and I. Gaines and Garbincius, {P. H.} and L. Garren and Gourlay, {S. A.} and Harding, {D. J.} and P. Kasper and A. Kreymer and P. Lebrun and S. Shukla and M. Vittone and S. Bianco and Fabbri, {F. L.} and S. Sarwar and A. Zallo and R. Culbertson and Gardner, {R. W.} and R. Greene and J. Wiss and G. Alimonti and G. Bellini and B. Caccianiga and L. Cinquini and {Di Corato}, M. and M. Giammarchi and P. Inzani and F. Leveraro and S. Malvezzi and D. Menasce and E. Meroni and L. Moroni and D. Pedrini and L. Perasso and A. Sala and S. Sala and D. Torretta and D. Buchholz and D. Claes and B. Gobbi and B. O'Reilly and Bishop, {J. M.} and Cason, {N. M.} and Kennedy, {C. J.} and Kim, {G. N.} and Lin, {T. F.} and Puseljic, {D. L.} and Ruchti, {R. C.} and Shephard, {W. D.} and Swiatek, {J. A.} and Wu, {Z. Y.} and V. Arena and G. Boca and C. Castoldi and G. Gianini and Ratti, {S. P.} and C. Riccardi and P. Vitulo and A. Lopez and Grim, {G. P.} and Paolone, {V. S.} and Yager, {P. M.} and Wilson, {J. R.} and Sheldon, {P. D.} and F. Davenport and Filaseta, {J. F.} and Blackett, {G. R.} and M. Pisharody and T. Handler and Cheon, {B. G.} and Kang, {J. S.} and Kim, {K. Y.}",

note = "Funding Information: We wish to acknowledge the assistance of the staff of Fermi National Accelerator Laboratory, the INFN of Italy, and the staffs of the physics departments of the collaborating institutions. This research was supported in part by the National Science Foundation, the US Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero dell'Universit~ e della Ricerca Scientifica, and the Korean Science and Engineering Foundation.",

year = "1993",

month = sep,

day = "23",

doi = "10.1016/0370-2693(93)91267-Q",

language = "English (US)",

volume = "314",

pages = "477--481",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - Evidence of the Cabibbo-suppressed decay Λc+ → pK-K+

AU - Frabetti, P. L.

AU - Cheung, H. W.K.

AU - Cumalat, J. P.

AU - Dallapiccola, C.

AU - Ginkel, J. F.

AU - Greene, S. V.

AU - Johns, W. E.

AU - Nehring, M. S.

AU - Butler, J. N.

AU - Cihangir, S.

AU - Gaines, I.

AU - Garbincius, P. H.

AU - Garren, L.

AU - Gourlay, S. A.

AU - Harding, D. J.

AU - Kasper, P.

AU - Kreymer, A.

AU - Lebrun, P.

AU - Shukla, S.

AU - Vittone, M.

AU - Bianco, S.

AU - Fabbri, F. L.

AU - Sarwar, S.

AU - Zallo, A.

AU - Culbertson, R.

AU - Gardner, R. W.

AU - Greene, R.

AU - Wiss, J.

AU - Alimonti, G.

AU - Bellini, G.

AU - Caccianiga, B.

AU - Cinquini, L.

AU - Di Corato, M.

AU - Giammarchi, M.

AU - Inzani, P.

AU - Leveraro, F.

AU - Malvezzi, S.

AU - Menasce, D.

AU - Meroni, E.

AU - Moroni, L.

AU - Pedrini, D.

AU - Perasso, L.

AU - Sala, A.

AU - Sala, S.

AU - Torretta, D.

AU - Buchholz, D.

AU - Claes, D.

AU - Gobbi, B.

AU - O'Reilly, B.

AU - Bishop, J. M.

AU - Cason, N. M.

AU - Kennedy, C. J.

AU - Kim, G. N.

AU - Lin, T. F.

AU - Puseljic, D. L.

AU - Ruchti, R. C.

AU - Shephard, W. D.

AU - Swiatek, J. A.

AU - Wu, Z. Y.

AU - Arena, V.

AU - Boca, G.

AU - Castoldi, C.

AU - Gianini, G.

AU - Ratti, S. P.

AU - Riccardi, C.

AU - Vitulo, P.

AU - Lopez, A.

AU - Grim, G. P.

AU - Paolone, V. S.

AU - Yager, P. M.

AU - Wilson, J. R.

AU - Sheldon, P. D.

AU - Davenport, F.

AU - Filaseta, J. F.

AU - Blackett, G. R.

AU - Pisharody, M.

AU - Handler, T.

AU - Cheon, B. G.

AU - Kang, J. S.

AU - Kim, K. Y.

N1 - Funding Information: We wish to acknowledge the assistance of the staff of Fermi National Accelerator Laboratory, the INFN of Italy, and the staffs of the physics departments of the collaborating institutions. This research was supported in part by the National Science Foundation, the US Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero dell'Universit~ e della Ricerca Scientifica, and the Korean Science and Engineering Foundation.

PY - 1993/9/23

Y1 - 1993/9/23

N2 - We report evidence for the Cabibbo-suppressed decay of the charm baryon Λc+ into the final state pK-K+. The analysis is performed on data collected by high energy photoproduction experiment E687 during the 1990-1991 Fermilab fixed target run. The branching ratio of the decay Λc+ → pK-K+ relative to the non-suppressed Λc+ → pK-π+ is measured to be BR(pK-K+/pK-π+) = 0.096 ± 0.029 ± 0.010. The upper limit of the decay into pø relative to the inclusive pK-K+ decay is measured to be BR(pø/pK-K+ < 58% at the 90% confidence level.

AB - We report evidence for the Cabibbo-suppressed decay of the charm baryon Λc+ into the final state pK-K+. The analysis is performed on data collected by high energy photoproduction experiment E687 during the 1990-1991 Fermilab fixed target run. The branching ratio of the decay Λc+ → pK-K+ relative to the non-suppressed Λc+ → pK-π+ is measured to be BR(pK-K+/pK-π+) = 0.096 ± 0.029 ± 0.010. The upper limit of the decay into pø relative to the inclusive pK-K+ decay is measured to be BR(pø/pK-K+ < 58% at the 90% confidence level.

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UR - http://www.scopus.com/inward/citedby.url?scp=0001386368&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(93)91267-Q

DO - 10.1016/0370-2693(93)91267-Q

M3 - Article

AN - SCOPUS:0001386368

SN - 0370-2693

VL - 314

SP - 477

EP - 481

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -