Asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π- nucleon 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; L. M. Cremaldi; C. Darling; K. Denisenko; S. Devmal; A. Fernandez; G. F. Fox; P. Gagnon; C. Gobel; K. Gounder; A. M. Halling; G. Herrera; G. Hurvits; C. James; P. A. Kasper; S. Kwan; D. C. Langs; J. Leslie; B. Lundberg; J. Magnin; S. MayTal-Beck; B. Meadows; J. R.T. De Mello Neto; D. Mihalcea; 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; D. A. Sanders; A. K.S. Santha; A. F.S. Santoro; A. J. Schwartz; M. Sheaff; R. A. Sidwell; F. R.A. Simão; A. J. Slaughter; M. D. Sokoloff; J. Solano; N. R. Stanton; R. J. Stefanski; K. Stenson; D. J. Summers; S. Takach; K. Thorne; A. K. Tripathi; S. Watanabe; R. Weiss-Babai; J. Wiener; N. Witchey; E. Wolin; S. M. Yang; D. Yi; S. Yoshida; R. Zaliznyak; C. Zhang

doi:10.1016/S0370-2693(00)01239-9

Asymmetries in the production of Λ(c)/⁺ and Λ(c)/^- baryons in 500 GeV/c π^- nucleon 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, L. M. Cremaldi, C. Darling, K. Denisenko, S. Devmal, A. Fernandez, G. F. FoxP. Gagnon, C. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, J. Magnin^*, S. MayTal-Beck, B. Meadows, J. R.T. De Mello Neto, D. Mihalcea, 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, D. A. Sanders, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, F. R.A. Simão, A. J. Slaughter, M. D. Sokoloff, J. Solano, N. R. Stanton, R. J. Stefanski, K. Stenson, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S. M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, C. Zhang

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

We present a measurement of asymmetries in the production of Λ(c)/⁺ and Λ(c)/^- baryons in 500 GeV/c π^--nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x (x(F)) and transverse momentum squared (p(T)/²) using a sample of 1819 ± 62 Λ(c)'s observed in the decay channel Λ(c)/⁺ → pK^-π⁺. We observe more Λ(c)/⁺ than Λ(c)/^- baryons, with an asymmetry of (12.7 ± 3.4 ± 1.3)% independent of x(F) and p(T)/² in our kinematical range (-0.1 ≤ x(F) ≤ 0.6 and 0.0 ≤ p(T)/² ≤ 8.0 (GeV/c)²). This Λ(c) asymmetry measurement is the first with data in both the positive and negative x(F) regions. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	42-48
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	495
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(00)01239-9
State	Published - 7 Dec 2000

Funding

Funders
Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico
Universities Research Associates, Inc.
National Science Foundation
U.S. Department of Energy
United States-Israel Binational Science Foundation
Consejo Nacional de Ciencia y Tecnología

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10.1016/S0370-2693(00)01239-9

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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., Cremaldi, L. M., Darling, C., Denisenko, K., Devmal, S., Fernandez, A., ... Zhang, C. (2000). Asymmetries in the production of Λ(c)/⁺ and Λ(c)/^- baryons in 500 GeV/c π^- nucleon interactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 495(1-2), 42-48. https://doi.org/10.1016/S0370-2693(00)01239-9

@article{b6d4c9dabd964f8baf03e374ca68243b,

title = "Asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π- nucleon interactions",

abstract = "We present a measurement of asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π--nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x (x(F)) and transverse momentum squared (p(T)/2) using a sample of 1819 ± 62 Λ(c)'s observed in the decay channel Λ(c)/+ → pK-π+. We observe more Λ(c)/+ than Λ(c)/- baryons, with an asymmetry of (12.7 ± 3.4 ± 1.3)\% independent of x(F) and p(T)/2 in our kinematical range (-0.1 ≤ x(F) ≤ 0.6 and 0.0 ≤ p(T)/2 ≤ 8.0 (GeV/c)2). This Λ(c) asymmetry measurement is the first with data in both the positive and negative x(F) regions. (C) 2000 Elsevier Science B.V.",

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 Cremaldi, \{L. M.\} and C. Darling and K. Denisenko and S. Devmal and A. Fernandez and Fox, \{G. F.\} and P. Gagnon and C. Gobel and K. Gounder and Halling, \{A. M.\} and G. Herrera and G. Hurvits and C. James and Kasper, \{P. A.\} and S. Kwan and Langs, \{D. C.\} and J. Leslie and B. Lundberg and J. Magnin and S. MayTal-Beck and B. Meadows and \{De Mello Neto\}, \{J. R.T.\} and D. Mihalcea 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 Sanders, \{D. A.\} and Santha, \{A. K.S.\} and Santoro, \{A. F.S.\} and Schwartz, \{A. J.\} and M. Sheaff and Sidwell, \{R. A.\} and Sim{\~a}o, \{F. R.A.\} and Slaughter, \{A. J.\} and Sokoloff, \{M. D.\} and J. Solano and Stanton, \{N. R.\} and Stefanski, \{R. J.\} and K. Stenson 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 Yang, \{S. M.\} and D. Yi and S. Yoshida and R. Zaliznyak and C. Zhang",

note = "Funding Information: We gratefully acknowledge the assistance of the staffs of Fermilab and of all the participating institutions. This research was supported by the Brazilian Conselho Nacional de Desenvolvimento Cient{\'ı}fico e Tecnol{\'o}gico, CONACyT (Mexico), the U.S.–Israel Binational Science Foundation, the U.S. Department of Energy and the U.S. National Science Foundation. Fermilab is operated by the Universities Research Associates, Inc., under contract with the U.S. Department of Energy.",

year = "2000",

month = dec,

day = "7",

doi = "10.1016/S0370-2693(00)01239-9",

language = "אנגלית",

volume = "495",

pages = "42--48",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

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, Cremaldi, LM, Darling, C, Denisenko, K, Devmal, S, Fernandez, A, Fox, GF, Gagnon, P, Gobel, C, Gounder, K, Halling, AM, Herrera, G, Hurvits, G, James, C, Kasper, PA, Kwan, S, Langs, DC, Leslie, J, Lundberg, B, Magnin, J, MayTal-Beck, S, Meadows, B, De Mello Neto, JRT, Mihalcea, D, 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, Sanders, DA, Santha, AKS, Santoro, AFS, Schwartz, AJ, Sheaff, M, Sidwell, RA, Simão, FRA, Slaughter, AJ, Sokoloff, MD, Solano, J, Stanton, NR, Stefanski, RJ, Stenson, K, Summers, DJ, Takach, S, Thorne, K, Tripathi, AK, Watanabe, S, Weiss-Babai, R, Wiener, J, Witchey, N, Wolin, E, Yang, SM, Yi, D, Yoshida, S, Zaliznyak, R & Zhang, C 2000, 'Asymmetries in the production of Λ(c)/⁺ and Λ(c)/^- baryons in 500 GeV/c π^- nucleon interactions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 495, no. 1-2, pp. 42-48. https://doi.org/10.1016/S0370-2693(00)01239-9

TY - JOUR

T1 - Asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π- nucleon 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 - Cremaldi, L. M.

AU - Darling, C.

AU - Denisenko, K.

AU - Devmal, S.

AU - Fernandez, A.

AU - Fox, G. F.

AU - Gagnon, P.

AU - Gobel, C.

AU - Gounder, K.

AU - Halling, A. M.

AU - Herrera, G.

AU - Hurvits, G.

AU - James, C.

AU - Kasper, P. A.

AU - Kwan, S.

AU - Langs, D. C.

AU - Leslie, J.

AU - Lundberg, B.

AU - Magnin, J.

AU - MayTal-Beck, S.

AU - Meadows, B.

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

AU - Mihalcea, D.

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 - Sanders, D. A.

AU - Santha, A. K.S.

AU - Santoro, A. F.S.

AU - Schwartz, A. J.

AU - Sheaff, M.

AU - Sidwell, R. A.

AU - Simão, F. R.A.

AU - Slaughter, A. J.

AU - Sokoloff, M. D.

AU - Solano, J.

AU - Stanton, N. R.

AU - Stefanski, R. J.

AU - Stenson, 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 - Yang, S. M.

AU - Yi, D.

AU - Yoshida, S.

AU - Zaliznyak, R.

AU - Zhang, C.

N1 - Funding Information: We gratefully acknowledge the assistance of the staffs of Fermilab and of all the participating institutions. This research was supported by the Brazilian Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico, CONACyT (Mexico), the U.S.–Israel Binational Science Foundation, the U.S. Department of Energy and the U.S. National Science Foundation. Fermilab is operated by the Universities Research Associates, Inc., under contract with the U.S. Department of Energy.

PY - 2000/12/7

Y1 - 2000/12/7

N2 - We present a measurement of asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π--nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x (x(F)) and transverse momentum squared (p(T)/2) using a sample of 1819 ± 62 Λ(c)'s observed in the decay channel Λ(c)/+ → pK-π+. We observe more Λ(c)/+ than Λ(c)/- baryons, with an asymmetry of (12.7 ± 3.4 ± 1.3)% independent of x(F) and p(T)/2 in our kinematical range (-0.1 ≤ x(F) ≤ 0.6 and 0.0 ≤ p(T)/2 ≤ 8.0 (GeV/c)2). This Λ(c) asymmetry measurement is the first with data in both the positive and negative x(F) regions. (C) 2000 Elsevier Science B.V.

AB - We present a measurement of asymmetries in the production of Λ(c)/+ and Λ(c)/- baryons in 500 GeV/c π--nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x (x(F)) and transverse momentum squared (p(T)/2) using a sample of 1819 ± 62 Λ(c)'s observed in the decay channel Λ(c)/+ → pK-π+. We observe more Λ(c)/+ than Λ(c)/- baryons, with an asymmetry of (12.7 ± 3.4 ± 1.3)% independent of x(F) and p(T)/2 in our kinematical range (-0.1 ≤ x(F) ≤ 0.6 and 0.0 ≤ p(T)/2 ≤ 8.0 (GeV/c)2). This Λ(c) asymmetry measurement is the first with data in both the positive and negative x(F) regions. (C) 2000 Elsevier Science B.V.

UR - https://www.scopus.com/pages/publications/0034619828

U2 - 10.1016/S0370-2693(00)01239-9

DO - 10.1016/S0370-2693(00)01239-9

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

AN - SCOPUS:0034619828

SN - 0370-2693

VL - 495

SP - 42

EP - 48

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 - 1-2

ER -

Asymmetries in the production of Λ(c)/⁺ and Λ(c)/^- baryons in 500 GeV/c π^- nucleon interactions

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