Mass splitting and production of Σ0c and Σ++c measured in 500 GeV π--N interactions

E. M. Aitala; S. Amato; J. C. Anjos; J. A. Appel; D. Ashery; S. Banerjee; I. Bediaga; G. Blaylock; S. B. Bracker; P. R. Burchat; R. A. Burnstein; T. Carter; H. S. Carvalho; N. K. Copty; I. Costa; L. M. Cremaldi; C. Darling; K. Denisenko; J. Engelfried; A. Fernandez; P. Gagnon; S. Gerzon; K. Gounder; A. M. Halling; G. Herrera; G. Hurvits; C. James; P. A. Kasper; N. Kondakis; S. Kwan; D. C. Langs; J. Leslie; J. Lichtenstadt; B. Lundberg; A. Manacero; S. MayTal-Beck; B. Meadows; J. R.T. De Mello Neto; R. H. Milburn; J. M. De Miranda; A. Napier; A. Nguyen; A. B. D'Oliveira; K. O'Shaughnessy; K. C. Peng; L. P. Perera; M. V. Purohit; B. Quinn; S. Radeztsky; A. Rafatian; N. W. Reay; J. J. Reidy; A. C. Dos Reis; H. A. Rubin; A. K.S. Santha; A. F.S. Santoro; A. J. Schwartz; M. Sheaff; R. A. Sidwell; A. J. Slaughter; J. G. Smith; M. D. Sokoloff; N. R. Stanton; K. Sugano; D. J. Summers; S. Takach; K. Thorne; A. K. Tripathi; S. Watanabe; R. Weiss-Babai; J. Wiener; N. Witchey; E. Wolin; D. Yi; R. Zaliznyak; C. Zhang

doi:10.1016/0370-2693(96)00471-6

Mass splitting and production of Σ⁰_c and Σ⁺⁺_c measured in 500 GeV π^--N interactions

E. M. Aitala^*, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, I. Costa, L. M. Cremaldi, C. Darling, K. Denisenko, J. Engelfried, A. FernandezP. Gagnon, S. Gerzon, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, N. Kondakis, S. Kwan, D. C. Langs, J. Leslie, J. Lichtenstadt, B. Lundberg, A. Manacero, S. MayTal-Beck, B. Meadows, J. R.T. De Mello Neto, R. H. Milburn, J. M. De Miranda, A. Napier, A. Nguyen, A. B. D'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. Dos Reis, H. A. Rubin, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, J. G. Smith, M. D. Sokoloff, N. R. Stanton, K. Sugano, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, R. Zaliznyak, C. Zhang

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

From a sample of 2722 ± 78 Λ⁺_c decaying to the pK^- π⁺ final state, we have observed, in the hadroproduction experiment E791 at Fermilab, 143 ± 20 Σ⁰_c and 122 ± 18 Σ⁺⁺_c through their decays to Λ⁺_cπ^±. The mass difference M(Σ⁰_c) - M(Λ⁺_c) is measured to be (167. 38± 0.29 ± 0.15) MeV; for M(Σ⁺⁺_c) - M(Λ⁺_c), we find (167.76 ± 0.29 ± 0.15) MeV. The rate of Λ⁺_c production from decays of the Σ_c triplet is (22 ± 2 ± 3) % of the total Λ⁺_c production assuming equal rate of production from all three, as measured for Σ⁰_c and Σ⁺⁺_c. We do not observe a statistically significant Σ_c baryon-antibaryon production asymmetry. The χ_F and p²_t spectra of A⁺_c from Λ⁺_c decays are observed to be similar to those for all A⁺_c's produced.

Original language	English
Pages (from-to)	292-298
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	379
Issue number	1-4
DOIs	https://doi.org/10.1016/0370-2693(96)00471-6
State	Published - 27 Jun 1996

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Aitala, E. M., Amato, S., Anjos, J. C., Appel, J. A., Ashery, D., Banerjee, S., Bediaga, I., Blaylock, G., Bracker, S. B., Burchat, P. R., Burnstein, R. A., Carter, T., Carvalho, H. S., Copty, N. K., Costa, I., Cremaldi, L. M., Darling, C., Denisenko, K., Engelfried, J., ... Zhang, C. (1996). Mass splitting and production of Σ⁰_c and Σ⁺⁺_c measured in 500 GeV π^--N interactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 379(1-4), 292-298. https://doi.org/10.1016/0370-2693(96)00471-6

@article{39d93f0e9b2f49088643b1cf95d27f3c,

title = "Mass splitting and production of Σ0c and Σ++c measured in 500 GeV π--N interactions",

abstract = "From a sample of 2722 ± 78 Λ+c decaying to the pK- π+ final state, we have observed, in the hadroproduction experiment E791 at Fermilab, 143 ± 20 Σ0c and 122 ± 18 Σ++c through their decays to Λ+cπ±. The mass difference M(Σ0c) - M(Λ+c) is measured to be (167. 38± 0.29 ± 0.15) MeV; for M(Σ++c) - M(Λ+c), we find (167.76 ± 0.29 ± 0.15) MeV. The rate of Λ+c production from decays of the Σc triplet is (22 ± 2 ± 3) % of the total Λ+c production assuming equal rate of production from all three, as measured for Σ0c and Σ++c. We do not observe a statistically significant Σc baryon-antibaryon production asymmetry. The χF and p2t spectra of A+c from Λ+c decays are observed to be similar to those for all A+c's produced.",

author = "Aitala, {E. M.} and S. Amato and Anjos, {J. C.} and Appel, {J. A.} and D. Ashery and S. Banerjee and I. Bediaga and G. Blaylock and Bracker, {S. B.} and Burchat, {P. R.} and Burnstein, {R. A.} and T. Carter and Carvalho, {H. S.} and Copty, {N. K.} and I. Costa and Cremaldi, {L. M.} and C. Darling and K. Denisenko and J. Engelfried and A. Fernandez and P. Gagnon and S. Gerzon and K. Gounder and Halling, {A. M.} and G. Herrera and G. Hurvits and C. James and Kasper, {P. A.} and N. Kondakis and S. Kwan and Langs, {D. C.} and J. Leslie and J. Lichtenstadt and B. Lundberg and A. Manacero and S. MayTal-Beck and B. Meadows and {De Mello Neto}, {J. R.T.} and Milburn, {R. H.} and {De Miranda}, {J. M.} and A. Napier and A. Nguyen and D'Oliveira, {A. B.} and K. O'Shaughnessy and Peng, {K. C.} and Perera, {L. P.} and Purohit, {M. V.} and B. Quinn and S. Radeztsky and A. Rafatian and Reay, {N. W.} and Reidy, {J. J.} and {Dos Reis}, {A. C.} and Rubin, {H. A.} and Santha, {A. K.S.} and Santoro, {A. F.S.} and Schwartz, {A. J.} and M. Sheaff and Sidwell, {R. A.} and Slaughter, {A. J.} and Smith, {J. G.} and Sokoloff, {M. D.} and Stanton, {N. R.} and K. Sugano and Summers, {D. J.} and S. Takach and K. Thorne and Tripathi, {A. K.} and S. Watanabe and R. Weiss-Babai and J. Wiener and N. Witchey and E. Wolin and D. Yi and R. Zaliznyak and C. Zhang",

year = "1996",

month = jun,

day = "27",

doi = "10.1016/0370-2693(96)00471-6",

language = "אנגלית",

volume = "379",

pages = "292--298",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-4",

}

Aitala, EM, Amato, S, Anjos, JC, Appel, JA, Ashery, D, Banerjee, S, Bediaga, I, Blaylock, G, Bracker, SB, Burchat, PR, Burnstein, RA, Carter, T, Carvalho, HS, Copty, NK, Costa, I, Cremaldi, LM, Darling, C, Denisenko, K, Engelfried, J, Fernandez, A, Gagnon, P, Gerzon, S, Gounder, K, Halling, AM, Herrera, G, Hurvits, G, James, C, Kasper, PA, Kondakis, N, Kwan, S, Langs, DC, Leslie, J, Lichtenstadt, J, Lundberg, B, Manacero, A, MayTal-Beck, S, Meadows, B, De Mello Neto, JRT, Milburn, RH, De Miranda, JM, Napier, A, Nguyen, A, D'Oliveira, AB, O'Shaughnessy, K, Peng, KC, Perera, LP, Purohit, MV, Quinn, B, Radeztsky, S, Rafatian, A, Reay, NW, Reidy, JJ, Dos Reis, AC, Rubin, HA, Santha, AKS, Santoro, AFS, Schwartz, AJ, Sheaff, M, Sidwell, RA, Slaughter, AJ, Smith, JG, Sokoloff, MD, Stanton, NR, Sugano, K, Summers, DJ, Takach, S, Thorne, K, Tripathi, AK, Watanabe, S, Weiss-Babai, R, Wiener, J, Witchey, N, Wolin, E, Yi, D, Zaliznyak, R & Zhang, C 1996, 'Mass splitting and production of Σ⁰_c and Σ⁺⁺_c measured in 500 GeV π^--N interactions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 379, no. 1-4, pp. 292-298. https://doi.org/10.1016/0370-2693(96)00471-6

TY - JOUR

T1 - Mass splitting and production of Σ0c and Σ++c measured in 500 GeV π--N interactions

AU - Aitala, E. M.

AU - Amato, S.

AU - Anjos, J. C.

AU - Appel, J. A.

AU - Ashery, D.

AU - Banerjee, S.

AU - Bediaga, I.

AU - Blaylock, G.

AU - Bracker, S. B.

AU - Burchat, P. R.

AU - Burnstein, R. A.

AU - Carter, T.

AU - Carvalho, H. S.

AU - Copty, N. K.

AU - Costa, I.

AU - Cremaldi, L. M.

AU - Darling, C.

AU - Denisenko, K.

AU - Engelfried, J.

AU - Fernandez, A.

AU - Gagnon, P.

AU - Gerzon, S.

AU - Gounder, K.

AU - Halling, A. M.

AU - Herrera, G.

AU - Hurvits, G.

AU - James, C.

AU - Kasper, P. A.

AU - Kondakis, N.

AU - Kwan, S.

AU - Langs, D. C.

AU - Leslie, J.

AU - Lichtenstadt, J.

AU - Lundberg, B.

AU - Manacero, A.

AU - MayTal-Beck, S.

AU - Meadows, B.

AU - De Mello Neto, J. R.T.

AU - Milburn, R. H.

AU - De Miranda, J. M.

AU - Napier, A.

AU - Nguyen, A.

AU - D'Oliveira, A. B.

AU - O'Shaughnessy, K.

AU - Peng, K. C.

AU - Perera, L. P.

AU - Purohit, M. V.

AU - Quinn, B.

AU - Radeztsky, S.

AU - Rafatian, A.

AU - Reay, N. W.

AU - Reidy, J. J.

AU - Dos Reis, A. C.

AU - Rubin, H. A.

AU - Santha, A. K.S.

AU - Santoro, A. F.S.

AU - Schwartz, A. J.

AU - Sheaff, M.

AU - Sidwell, R. A.

AU - Slaughter, A. J.

AU - Smith, J. G.

AU - Sokoloff, M. D.

AU - Stanton, N. R.

AU - Sugano, K.

AU - Summers, D. J.

AU - Takach, S.

AU - Thorne, K.

AU - Tripathi, A. K.

AU - Watanabe, S.

AU - Weiss-Babai, R.

AU - Wiener, J.

AU - Witchey, N.

AU - Wolin, E.

AU - Yi, D.

AU - Zaliznyak, R.

AU - Zhang, C.

PY - 1996/6/27

Y1 - 1996/6/27

N2 - From a sample of 2722 ± 78 Λ+c decaying to the pK- π+ final state, we have observed, in the hadroproduction experiment E791 at Fermilab, 143 ± 20 Σ0c and 122 ± 18 Σ++c through their decays to Λ+cπ±. The mass difference M(Σ0c) - M(Λ+c) is measured to be (167. 38± 0.29 ± 0.15) MeV; for M(Σ++c) - M(Λ+c), we find (167.76 ± 0.29 ± 0.15) MeV. The rate of Λ+c production from decays of the Σc triplet is (22 ± 2 ± 3) % of the total Λ+c production assuming equal rate of production from all three, as measured for Σ0c and Σ++c. We do not observe a statistically significant Σc baryon-antibaryon production asymmetry. The χF and p2t spectra of A+c from Λ+c decays are observed to be similar to those for all A+c's produced.

AB - From a sample of 2722 ± 78 Λ+c decaying to the pK- π+ final state, we have observed, in the hadroproduction experiment E791 at Fermilab, 143 ± 20 Σ0c and 122 ± 18 Σ++c through their decays to Λ+cπ±. The mass difference M(Σ0c) - M(Λ+c) is measured to be (167. 38± 0.29 ± 0.15) MeV; for M(Σ++c) - M(Λ+c), we find (167.76 ± 0.29 ± 0.15) MeV. The rate of Λ+c production from decays of the Σc triplet is (22 ± 2 ± 3) % of the total Λ+c production assuming equal rate of production from all three, as measured for Σ0c and Σ++c. We do not observe a statistically significant Σc baryon-antibaryon production asymmetry. The χF and p2t spectra of A+c from Λ+c decays are observed to be similar to those for all A+c's produced.

UR - http://www.scopus.com/inward/record.url?scp=0041537005&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(96)00471-6

DO - 10.1016/0370-2693(96)00471-6

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AN - SCOPUS:0041537005

SN - 0370-2693

VL - 379

SP - 292

EP - 298

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 -

Mass splitting and production of Σ⁰_c and Σ⁺⁺_c measured in 500 GeV π^--N interactions

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