First observation of the Cabibbo-suppressed decays Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+ and measurement of their branching ratios

E. Vázquez-Jáuregui; J. Engelfried; U. Akgun; G. Alkhazov; J. Amaro-Reyes; A. G. Atamantchouk; A. S. Ayan; M. Y. Balatz; A. Blanco-Covarrubias; N. F. Bondar; P. S. Cooper; L. J. Dauwe; G. V. Davidenko; U. Dersch; A. G. Dolgolenko; G. B. Dzyubenko; R. Edelstein; L. Emediato; A. M.F. Endler; I. Eschrich; C. O. Escobar; N. Estrada; A. V. Evdokimov; I. S. Filimonov; F. G. Garcia; M. Gaspero; I. Giller; V. L. Golovtsov; P. Gouffon; E. Gülmez; Kangling He; M. Iori; S. Y. Jun; M. Kaya; J. Kilmer; V. T. Kim; L. M. Kochenda; I. Konorov; A. P. Kozhevnikov; A. G. Krivshich; H. Krü; M. A. Kubantsev; V. P. Kubarovsky; A. I. Kulyavtsev; N. P. Kuropatkin; V. F. Kurshetsov; A. Kushnirenko; S. Kwan; J. Lach; A. Lamberto; L. G. Landsberg; I. Larin; E. M. Leikin; Yunshan Li; G. Ló; M. Luksys; T. Lungov; V. P. Maleev; D. Mao; Chensheng Mao; Zhenlin Mao; P. Mathew; M. Mattson; V. Matveev; E. McCliment; M. A. Moinester; V. V. Molchanov; A. Morelos; K. D. Nelson; A. V. Nemitkin; P. V. Neoustroev; C. Newsom; A. P. Nilov; S. B. Nurushev; A. Ocherashvili; Y. Onel; E. Ozel; S. Ozkorucuklu; A. Penzo; S. V. Petrenko; P. Pogodin; M. Procario; V. A. Prutskoi; E. Ramberg; G. F. Rappazzo; B. V. Razmyslovich; V. I. Rud; J. Russ; J. L. Sánchez-López; P. Schiavon; J. Simon; A. I. Sitnikov; D. Skow; V. J. Smith; M. Srivastava; V. Steiner; V. Stepanov; L. Stutte; M. Svoiski; N. K. Terentyev; G. P. Thomas; I. Torres; L. N. Uvarov; A. N. Vasiliev; D. V. Vavilov; V. S. Verebryusov; V. A. Victorov; V. E. Vishnyakov; A. A. Vorobyov; K. Vorwalter; J. You; Wenheng Zhao; Shuchen Zheng; R. Zukanovich-Funchal

doi:10.1016/j.physletb.2008.07.072

First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios

E. Vázquez-Jáuregui, J. Engelfried^*, U. Akgun, G. Alkhazov, J. Amaro-Reyes, A. G. Atamantchouk, A. S. Ayan, M. Y. Balatz, A. Blanco-Covarrubias, N. F. Bondar, P. S. Cooper, L. J. Dauwe, G. V. Davidenko, U. Dersch, A. G. Dolgolenko, G. B. Dzyubenko, R. Edelstein, L. Emediato, A. M.F. Endler, I. EschrichC. O. Escobar, N. Estrada, A. V. Evdokimov, I. S. Filimonov, F. G. Garcia, M. Gaspero, I. Giller, V. L. Golovtsov, P. Gouffon, E. Gülmez, Kangling He, M. Iori, S. Y. Jun, M. Kaya, J. Kilmer, V. T. Kim, L. M. Kochenda, I. Konorov, A. P. Kozhevnikov, A. G. Krivshich, H. Krü, M. A. Kubantsev, V. P. Kubarovsky, A. I. Kulyavtsev, N. P. Kuropatkin, V. F. Kurshetsov, A. Kushnirenko, S. Kwan, J. Lach, A. Lamberto, L. G. Landsberg, I. Larin, E. M. Leikin, Yunshan Li, G. Ló, M. Luksys, T. Lungov, V. P. Maleev, D. Mao, Chensheng Mao, Zhenlin Mao, P. Mathew, M. Mattson, V. Matveev, E. McCliment, M. A. Moinester, V. V. Molchanov, A. Morelos, K. D. Nelson, A. V. Nemitkin, P. V. Neoustroev, C. Newsom, A. P. Nilov, S. B. Nurushev, A. Ocherashvili, Y. Onel, E. Ozel, S. Ozkorucuklu, A. Penzo, S. V. Petrenko, P. Pogodin, M. Procario, V. A. Prutskoi, E. Ramberg, G. F. Rappazzo, B. V. Razmyslovich, V. I. Rud, J. Russ, J. L. Sánchez-López, P. Schiavon, J. Simon, A. I. Sitnikov, D. Skow, V. J. Smith, M. Srivastava, V. Steiner, V. Stepanov, L. Stutte, M. Svoiski, N. K. Terentyev, G. P. Thomas, I. Torres, L. N. Uvarov, A. N. Vasiliev, D. V. Vavilov, V. S. Verebryusov, V. A. Victorov, V. E. Vishnyakov, A. A. Vorobyov, K. Vorwalter, J. You, Wenheng Zhao, Shuchen Zheng, R. Zukanovich-Funchal

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We report the first observation of two Cabibbo-suppressed decay modes, Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺. We observe 59 ± 14 over a background of 87, and 22 ± 8 over a background of 13 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV / cΣ^- beam. The branching ratios of the decays relative to the Cabibbo-favored Ξ_c⁺ → Ξ^- π⁺ π⁺ are measured to be B (Ξ_c⁺ → Σ⁺ π^- π⁺) / B (Ξ_c⁺ → Ξ^- π⁺ π⁺) = 0.48 ± 0.20, and B (Ξ_c⁺ → Σ^- π⁺ π⁺) / B (Ξ_c⁺ → Ξ^- π⁺ π⁺) = 0.18 ± 0.09, respectively. We also report branching ratios for the same decay modes of the Λ_c⁺ relative to Λ_c⁺ → p K^- π⁺.

Original language	English
Pages (from-to)	299-304
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	666
Issue number	4
DOIs	https://doi.org/10.1016/j.physletb.2008.07.072
State	Published - 4 Sep 2008

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10.1016/j.physletb.2008.07.072

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Vázquez-Jáuregui, E., Engelfried, J., Akgun, U., Alkhazov, G., Amaro-Reyes, J., Atamantchouk, A. G., Ayan, A. S., Balatz, M. Y., Blanco-Covarrubias, A., Bondar, N. F., Cooper, P. S., Dauwe, L. J., Davidenko, G. V., Dersch, U., Dolgolenko, A. G., Dzyubenko, G. B., Edelstein, R., Emediato, L., Endler, A. M. F., ... Zukanovich-Funchal, R. (2008). First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 666(4), 299-304. https://doi.org/10.1016/j.physletb.2008.07.072

@article{5ef46439e8a74ebda11f3950f2e98d94,

title = "First observation of the Cabibbo-suppressed decays Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+ and measurement of their branching ratios",

abstract = "We report the first observation of two Cabibbo-suppressed decay modes, Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+. We observe 59 ± 14 over a background of 87, and 22 ± 8 over a background of 13 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV / cΣ- beam. The branching ratios of the decays relative to the Cabibbo-favored Ξc+ → Ξ- π+ π+ are measured to be B (Ξc+ → Σ+ π- π+) / B (Ξc+ → Ξ- π+ π+) = 0.48 ± 0.20, and B (Ξc+ → Σ- π+ π+) / B (Ξc+ → Ξ- π+ π+) = 0.18 ± 0.09, respectively. We also report branching ratios for the same decay modes of the Λc+ relative to Λc+ → p K- π+.",

author = "E. V{\'a}zquez-J{\'a}uregui and J. Engelfried and U. Akgun and G. Alkhazov and J. Amaro-Reyes and Atamantchouk, {A. G.} and Ayan, {A. S.} and Balatz, {M. Y.} and A. Blanco-Covarrubias and Bondar, {N. F.} and Cooper, {P. S.} and Dauwe, {L. J.} and Davidenko, {G. V.} and U. Dersch and Dolgolenko, {A. G.} and Dzyubenko, {G. B.} and R. Edelstein and L. Emediato and Endler, {A. M.F.} and I. Eschrich and Escobar, {C. O.} and N. Estrada and Evdokimov, {A. V.} and Filimonov, {I. S.} and Garcia, {F. G.} and M. Gaspero and I. Giller and Golovtsov, {V. L.} and P. Gouffon and E. G{\"u}lmez and Kangling He and M. Iori and Jun, {S. Y.} and M. Kaya and J. Kilmer and Kim, {V. T.} and Kochenda, {L. M.} and I. Konorov and Kozhevnikov, {A. P.} and Krivshich, {A. G.} and H. Kr{\"u} and Kubantsev, {M. A.} and Kubarovsky, {V. P.} and Kulyavtsev, {A. I.} and Kuropatkin, {N. P.} and Kurshetsov, {V. F.} and A. Kushnirenko and S. Kwan and J. Lach and A. Lamberto and Landsberg, {L. G.} and I. Larin and Leikin, {E. M.} and Yunshan Li and G. L{\'o} and M. Luksys and T. Lungov and Maleev, {V. P.} and D. Mao and Chensheng Mao and Zhenlin Mao and P. Mathew and M. Mattson and V. Matveev and E. McCliment and Moinester, {M. A.} and Molchanov, {V. V.} and A. Morelos and Nelson, {K. D.} and Nemitkin, {A. V.} and Neoustroev, {P. V.} and C. Newsom and Nilov, {A. P.} and Nurushev, {S. B.} and A. Ocherashvili and Y. Onel and E. Ozel and S. Ozkorucuklu and A. Penzo and Petrenko, {S. V.} and P. Pogodin and M. Procario and Prutskoi, {V. A.} and E. Ramberg and Rappazzo, {G. F.} and Razmyslovich, {B. V.} and Rud, {V. I.} and J. Russ and S{\'a}nchez-L{\'o}pez, {J. L.} and P. Schiavon and J. Simon and Sitnikov, {A. I.} and D. Skow and Smith, {V. J.} and M. Srivastava and V. Steiner and V. Stepanov and L. Stutte and M. Svoiski and Terentyev, {N. K.} and Thomas, {G. P.} and I. Torres and Uvarov, {L. N.} and Vasiliev, {A. N.} and Vavilov, {D. V.} and Verebryusov, {V. S.} and Victorov, {V. A.} and Vishnyakov, {V. E.} and Vorobyov, {A. A.} and K. Vorwalter and J. You and Wenheng Zhao and Shuchen Zheng and R. Zukanovich-Funchal",

note = "Funding Information: This research is carried out at KTH Speech, Music and Hearing. Funding was provided by the Swedish Research Council (VR) project 2009-4291. The authors would like to thank Anna Hjalmarsson for proving the DEAL corpus with annotations for fillers and feedback and for commentating on a draft of this paper. Special thanks goes to Ananthakrishnan Gopal who gave significant contributions in developing TVCQCC.",

year = "2008",

month = sep,

day = "4",

doi = "10.1016/j.physletb.2008.07.072",

language = "אנגלית",

volume = "666",

pages = "299--304",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "4",

}

Vázquez-Jáuregui, E, Engelfried, J, Akgun, U, Alkhazov, G, Amaro-Reyes, J, Atamantchouk, AG, Ayan, AS, Balatz, MY, Blanco-Covarrubias, A, Bondar, NF, Cooper, PS, Dauwe, LJ, Davidenko, GV, Dersch, U, Dolgolenko, AG, Dzyubenko, GB, Edelstein, R, Emediato, L, Endler, AMF, Eschrich, I, Escobar, CO, Estrada, N, Evdokimov, AV, Filimonov, IS, Garcia, FG, Gaspero, M, Giller, I, Golovtsov, VL, Gouffon, P, Gülmez, E, He, K, Iori, M, Jun, SY, Kaya, M, Kilmer, J, Kim, VT, Kochenda, LM, Konorov, I, Kozhevnikov, AP, Krivshich, AG, Krü, H, Kubantsev, MA, Kubarovsky, VP, Kulyavtsev, AI, Kuropatkin, NP, Kurshetsov, VF, Kushnirenko, A, Kwan, S, Lach, J, Lamberto, A, Landsberg, LG, Larin, I, Leikin, EM, Li, Y, Ló, G, Luksys, M, Lungov, T, Maleev, VP, Mao, D, Mao, C, Mao, Z, Mathew, P, Mattson, M, Matveev, V, McCliment, E, Moinester, MA, Molchanov, VV, Morelos, A, Nelson, KD, Nemitkin, AV, Neoustroev, PV, Newsom, C, Nilov, AP, Nurushev, SB, Ocherashvili, A, Onel, Y, Ozel, E, Ozkorucuklu, S, Penzo, A, Petrenko, SV, Pogodin, P, Procario, M, Prutskoi, VA, Ramberg, E, Rappazzo, GF, Razmyslovich, BV, Rud, VI, Russ, J, Sánchez-López, JL, Schiavon, P, Simon, J, Sitnikov, AI, Skow, D, Smith, VJ, Srivastava, M, Steiner, V, Stepanov, V, Stutte, L, Svoiski, M, Terentyev, NK, Thomas, GP, Torres, I, Uvarov, LN, Vasiliev, AN, Vavilov, DV, Verebryusov, VS, Victorov, VA, Vishnyakov, VE, Vorobyov, AA, Vorwalter, K, You, J, Zhao, W, Zheng, S & Zukanovich-Funchal, R 2008, 'First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 666, no. 4, pp. 299-304. https://doi.org/10.1016/j.physletb.2008.07.072

First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios. / Vázquez-Jáuregui, E.; Engelfried, J.; Akgun, U. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 666, No. 4, 04.09.2008, p. 299-304.

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

TY - JOUR

T1 - First observation of the Cabibbo-suppressed decays Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+ and measurement of their branching ratios

AU - Vázquez-Jáuregui, E.

AU - Engelfried, J.

AU - Akgun, U.

AU - Alkhazov, G.

AU - Amaro-Reyes, J.

AU - Atamantchouk, A. G.

AU - Ayan, A. S.

AU - Balatz, M. Y.

AU - Blanco-Covarrubias, A.

AU - Bondar, N. F.

AU - Cooper, P. S.

AU - Dauwe, L. J.

AU - Davidenko, G. V.

AU - Dersch, U.

AU - Dolgolenko, A. G.

AU - Dzyubenko, G. B.

AU - Edelstein, R.

AU - Emediato, L.

AU - Endler, A. M.F.

AU - Eschrich, I.

AU - Escobar, C. O.

AU - Estrada, N.

AU - Evdokimov, A. V.

AU - Filimonov, I. S.

AU - Garcia, F. G.

AU - Gaspero, M.

AU - Giller, I.

AU - Golovtsov, V. L.

AU - Gouffon, P.

AU - Gülmez, E.

AU - He, Kangling

AU - Iori, M.

AU - Jun, S. Y.

AU - Kaya, M.

AU - Kilmer, J.

AU - Kim, V. T.

AU - Kochenda, L. M.

AU - Konorov, I.

AU - Kozhevnikov, A. P.

AU - Krivshich, A. G.

AU - Krü, H.

AU - Kubantsev, M. A.

AU - Kubarovsky, V. P.

AU - Kulyavtsev, A. I.

AU - Kuropatkin, N. P.

AU - Kurshetsov, V. F.

AU - Kushnirenko, A.

AU - Kwan, S.

AU - Lach, J.

AU - Lamberto, A.

AU - Landsberg, L. G.

AU - Larin, I.

AU - Leikin, E. M.

AU - Li, Yunshan

AU - Ló, G.

AU - Luksys, M.

AU - Lungov, T.

AU - Maleev, V. P.

AU - Mao, D.

AU - Mao, Chensheng

AU - Mao, Zhenlin

AU - Mathew, P.

AU - Mattson, M.

AU - Matveev, V.

AU - McCliment, E.

AU - Moinester, M. A.

AU - Molchanov, V. V.

AU - Morelos, A.

AU - Nelson, K. D.

AU - Nemitkin, A. V.

AU - Neoustroev, P. V.

AU - Newsom, C.

AU - Nilov, A. P.

AU - Nurushev, S. B.

AU - Ocherashvili, A.

AU - Onel, Y.

AU - Ozel, E.

AU - Ozkorucuklu, S.

AU - Penzo, A.

AU - Petrenko, S. V.

AU - Pogodin, P.

AU - Procario, M.

AU - Prutskoi, V. A.

AU - Ramberg, E.

AU - Rappazzo, G. F.

AU - Razmyslovich, B. V.

AU - Rud, V. I.

AU - Russ, J.

AU - Sánchez-López, J. L.

AU - Schiavon, P.

AU - Simon, J.

AU - Sitnikov, A. I.

AU - Skow, D.

AU - Smith, V. J.

AU - Srivastava, M.

AU - Steiner, V.

AU - Stepanov, V.

AU - Stutte, L.

AU - Svoiski, M.

AU - Terentyev, N. K.

AU - Thomas, G. P.

AU - Torres, I.

AU - Uvarov, L. N.

AU - Vasiliev, A. N.

AU - Vavilov, D. V.

AU - Verebryusov, V. S.

AU - Victorov, V. A.

AU - Vishnyakov, V. E.

AU - Vorobyov, A. A.

AU - Vorwalter, K.

AU - You, J.

AU - Zhao, Wenheng

AU - Zheng, Shuchen

AU - Zukanovich-Funchal, R.

N1 - Funding Information: This research is carried out at KTH Speech, Music and Hearing. Funding was provided by the Swedish Research Council (VR) project 2009-4291. The authors would like to thank Anna Hjalmarsson for proving the DEAL corpus with annotations for fillers and feedback and for commentating on a draft of this paper. Special thanks goes to Ananthakrishnan Gopal who gave significant contributions in developing TVCQCC.

PY - 2008/9/4

Y1 - 2008/9/4

N2 - We report the first observation of two Cabibbo-suppressed decay modes, Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+. We observe 59 ± 14 over a background of 87, and 22 ± 8 over a background of 13 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV / cΣ- beam. The branching ratios of the decays relative to the Cabibbo-favored Ξc+ → Ξ- π+ π+ are measured to be B (Ξc+ → Σ+ π- π+) / B (Ξc+ → Ξ- π+ π+) = 0.48 ± 0.20, and B (Ξc+ → Σ- π+ π+) / B (Ξc+ → Ξ- π+ π+) = 0.18 ± 0.09, respectively. We also report branching ratios for the same decay modes of the Λc+ relative to Λc+ → p K- π+.

AB - We report the first observation of two Cabibbo-suppressed decay modes, Ξc+ → Σ+ π- π+ and Ξc+ → Σ- π+ π+. We observe 59 ± 14 over a background of 87, and 22 ± 8 over a background of 13 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV / cΣ- beam. The branching ratios of the decays relative to the Cabibbo-favored Ξc+ → Ξ- π+ π+ are measured to be B (Ξc+ → Σ+ π- π+) / B (Ξc+ → Ξ- π+ π+) = 0.48 ± 0.20, and B (Ξc+ → Σ- π+ π+) / B (Ξc+ → Ξ- π+ π+) = 0.18 ± 0.09, respectively. We also report branching ratios for the same decay modes of the Λc+ relative to Λc+ → p K- π+.

UR - http://www.scopus.com/inward/record.url?scp=49449090219&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2008.07.072

DO - 10.1016/j.physletb.2008.07.072

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:49449090219

SN - 0370-2693

VL - 666

SP - 299

EP - 304

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 - 4

ER -

Vázquez-Jáuregui E, Engelfried J, Akgun U, Alkhazov G, Amaro-Reyes J, Atamantchouk AG et al. First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2008 Sep 4;666(4):299-304. doi: 10.1016/j.physletb.2008.07.072

First observation of the Cabibbo-suppressed decays Ξ_c⁺ → Σ⁺ π^- π⁺ and Ξ_c⁺ → Σ^- π⁺ π⁺ and measurement of their branching ratios

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