Recent results from the NA36 experiment

E. G. Judd; E. Andersen; R. Blaes; M. Cherney; B. de la Cruz; C. Fernandez; C. Garabatos; J. A. Garzon; W. M. Geist; D. E. Greiner; C. R. Gruhn; M. Hafidouni; J. Hrubec; P. G. Jones; E. G. Judd; J. P.M. Kuipers; M. Ladrem; P. Ladron de Guevara; G. Lovhoiden; J. MacNaughton; J. Mosquera; Z. Nataniec; J. M. Nelson; G. Neuhofer; C. Perez de los Heros; M. Plo; P. Porth; B. Powell; A. Ramil; H. Rohringer; I. Sakrejda; T. F. Thorsteinsen; J. Traxler; C. Voltolini; K. Wozniak; A. Yanez; R. Zybert

doi:10.1016/0375-9474(95)00242-S

Recent results from the NA36 experiment

E. G. Judd, E. Andersen, R. Blaes, M. Cherney, B. de la Cruz, C. Fernandez, C. Garabatos, J. A. Garzon, W. M. Geist, D. E. Greiner, C. R. Gruhn, M. Hafidouni, J. Hrubec, P. G. Jones, E. G. Judd, J. P.M. Kuipers, M. Ladrem, P. Ladron de Guevara, G. Lovhoiden, J. MacNaughtonJ. Mosquera, Z. Nataniec, J. M. Nelson, G. Neuhofer, C. Perez de los Heros, M. Plo, P. Porth, B. Powell, A. Ramil, H. Rohringer, I. Sakrejda, T. F. Thorsteinsen, J. Traxler, C. Voltolini, K. Wozniak, A. Yanez, R. Zybert

Department of Physics

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Abstract

Measurements of the production of Λ particles in S+Pb and S+S collisions at a beam momentum of 200 GeV/c per nucleon are presented. The S+Pb data was taken with two different experimental configurations, and the results agree well with each other. The effects of a new Monte Carlo simulation of the NA36 TPC on the efficiency calculations are discussed. The Λ rapidity and multiplicity distributions are then compared to three theoretical models of heavy ion interactions, and to the NA35 results. There is still a significant disagreement between the two experiments. The comparison to the models indicates that reinteractions of secondaries are important in explaining the observed Λ yields. Finally, the yields of doubly strange baryons in S+Pb interactions have been recalculated using the new efficiencies. The ratios of double to singly strange baryons are unchanged from the previously published results.

Original language	English (US)
Pages (from-to)	291-306
Number of pages	16
Journal	Nuclear Physics, Section A
Volume	590
Issue number	1-2
DOIs	https://doi.org/10.1016/0375-9474(95)00242-S
State	Published - Jul 24 1995

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0375-9474(95)00242-S

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Judd, E. G., Andersen, E., Blaes, R., Cherney, M., de la Cruz, B., Fernandez, C., Garabatos, C., Garzon, J. A., Geist, W. M., Greiner, D. E., Gruhn, C. R., Hafidouni, M., Hrubec, J., Jones, P. G., Judd, E. G., Kuipers, J. P. M., Ladrem, M., Ladron de Guevara, P., Lovhoiden, G., ... Zybert, R. (1995). Recent results from the NA36 experiment. Nuclear Physics, Section A, 590(1-2), 291-306. https://doi.org/10.1016/0375-9474(95)00242-S

Recent results from the NA36 experiment. / Judd, E. G.; Andersen, E.; Blaes, R.; Cherney, M.; de la Cruz, B.; Fernandez, C.; Garabatos, C.; Garzon, J. A.; Geist, W. M.; Greiner, D. E.; Gruhn, C. R.; Hafidouni, M.; Hrubec, J.; Jones, P. G.; Judd, E. G.; Kuipers, J. P.M.; Ladrem, M.; Ladron de Guevara, P.; Lovhoiden, G.; MacNaughton, J.; Mosquera, J.; Nataniec, Z.; Nelson, J. M.; Neuhofer, G.; Perez de los Heros, C.; Plo, M.; Porth, P.; Powell, B.; Ramil, A.; Rohringer, H.; Sakrejda, I.; Thorsteinsen, T. F.; Traxler, J.; Voltolini, C.; Wozniak, K.; Yanez, A.; Zybert, R.

In: Nuclear Physics, Section A, Vol. 590, No. 1-2, 24.07.1995, p. 291-306.

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

Judd, EG, Andersen, E, Blaes, R, Cherney, M, de la Cruz, B, Fernandez, C, Garabatos, C, Garzon, JA, Geist, WM, Greiner, DE, Gruhn, CR, Hafidouni, M, Hrubec, J, Jones, PG, Judd, EG, Kuipers, JPM, Ladrem, M, Ladron de Guevara, P, Lovhoiden, G, MacNaughton, J, Mosquera, J, Nataniec, Z, Nelson, JM, Neuhofer, G, Perez de los Heros, C, Plo, M, Porth, P, Powell, B, Ramil, A, Rohringer, H, Sakrejda, I, Thorsteinsen, TF, Traxler, J, Voltolini, C, Wozniak, K, Yanez, A & Zybert, R 1995, 'Recent results from the NA36 experiment', Nuclear Physics, Section A, vol. 590, no. 1-2, pp. 291-306. https://doi.org/10.1016/0375-9474(95)00242-S

Judd, E. G. ; Andersen, E. ; Blaes, R. ; Cherney, M. ; de la Cruz, B. ; Fernandez, C. ; Garabatos, C. ; Garzon, J. A. ; Geist, W. M. ; Greiner, D. E. ; Gruhn, C. R. ; Hafidouni, M. ; Hrubec, J. ; Jones, P. G. ; Judd, E. G. ; Kuipers, J. P.M. ; Ladrem, M. ; Ladron de Guevara, P. ; Lovhoiden, G. ; MacNaughton, J. ; Mosquera, J. ; Nataniec, Z. ; Nelson, J. M. ; Neuhofer, G. ; Perez de los Heros, C. ; Plo, M. ; Porth, P. ; Powell, B. ; Ramil, A. ; Rohringer, H. ; Sakrejda, I. ; Thorsteinsen, T. F. ; Traxler, J. ; Voltolini, C. ; Wozniak, K. ; Yanez, A. ; Zybert, R. / Recent results from the NA36 experiment. In: Nuclear Physics, Section A. 1995 ; Vol. 590, No. 1-2. pp. 291-306.

@article{e1c784e77b2b4503a63089ae9b28aa34,

title = "Recent results from the NA36 experiment",

abstract = "Measurements of the production of Λ particles in S+Pb and S+S collisions at a beam momentum of 200 GeV/c per nucleon are presented. The S+Pb data was taken with two different experimental configurations, and the results agree well with each other. The effects of a new Monte Carlo simulation of the NA36 TPC on the efficiency calculations are discussed. The Λ rapidity and multiplicity distributions are then compared to three theoretical models of heavy ion interactions, and to the NA35 results. There is still a significant disagreement between the two experiments. The comparison to the models indicates that reinteractions of secondaries are important in explaining the observed Λ yields. Finally, the yields of doubly strange baryons in S+Pb interactions have been recalculated using the new efficiencies. The ratios of double to singly strange baryons are unchanged from the previously published results.",

author = "Judd, {E. G.} and E. Andersen and R. Blaes and M. Cherney and {de la Cruz}, B. and C. Fernandez and C. Garabatos and Garzon, {J. A.} and Geist, {W. M.} and Greiner, {D. E.} and Gruhn, {C. R.} and M. Hafidouni and J. Hrubec and Jones, {P. G.} and Judd, {E. G.} and Kuipers, {J. P.M.} and M. Ladrem and {Ladron de Guevara}, P. and G. Lovhoiden and J. MacNaughton and J. Mosquera and Z. Nataniec and Nelson, {J. M.} and G. Neuhofer and {Perez de los Heros}, C. and M. Plo and P. Porth and B. Powell and A. Ramil and H. Rohringer and I. Sakrejda and Thorsteinsen, {T. F.} and J. Traxler and C. Voltolini and K. Wozniak and A. Yanez and R. Zybert",

note = "Funding Information: Part of this work was supported by EC grant A88000145; Director, Office of Energy Research, Division of Nuclear Physics of the Office of High Energy and Nuclear Physics of the U. S. Department of Energy under contract no. DE-AC03-76F00098 and DE-FG02-91ER40652, United Kingdom Science and Engineering Research Council under Grant GE/F 40065 and Spain under CICYT contracts 85-0022, AE86-0031, AE87-0031, AE88-0031, AE89-0589, AE90-0031, AEN91-0739 and XUGA 80409288. Much of the computing work has been done using the IBM PPCS STAGE 2 compute server. The authors are grateful to CERN and IBM for making it available as well as to CERN's PPCS group and especially D.Lord for their help and support in using the PPCS STAGE 2 computer system.",

year = "1995",

month = jul,

day = "24",

doi = "10.1016/0375-9474(95)00242-S",

language = "English (US)",

volume = "590",

pages = "291--306",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Recent results from the NA36 experiment

AU - Judd, E. G.

AU - Andersen, E.

AU - Blaes, R.

AU - Cherney, M.

AU - de la Cruz, B.

AU - Fernandez, C.

AU - Garabatos, C.

AU - Garzon, J. A.

AU - Geist, W. M.

AU - Greiner, D. E.

AU - Gruhn, C. R.

AU - Hafidouni, M.

AU - Hrubec, J.

AU - Jones, P. G.

AU - Judd, E. G.

AU - Kuipers, J. P.M.

AU - Ladrem, M.

AU - Ladron de Guevara, P.

AU - Lovhoiden, G.

AU - MacNaughton, J.

AU - Mosquera, J.

AU - Nataniec, Z.

AU - Nelson, J. M.

AU - Neuhofer, G.

AU - Perez de los Heros, C.

AU - Plo, M.

AU - Porth, P.

AU - Powell, B.

AU - Ramil, A.

AU - Rohringer, H.

AU - Sakrejda, I.

AU - Thorsteinsen, T. F.

AU - Traxler, J.

AU - Voltolini, C.

AU - Wozniak, K.

AU - Yanez, A.

AU - Zybert, R.

N1 - Funding Information: Part of this work was supported by EC grant A88000145; Director, Office of Energy Research, Division of Nuclear Physics of the Office of High Energy and Nuclear Physics of the U. S. Department of Energy under contract no. DE-AC03-76F00098 and DE-FG02-91ER40652, United Kingdom Science and Engineering Research Council under Grant GE/F 40065 and Spain under CICYT contracts 85-0022, AE86-0031, AE87-0031, AE88-0031, AE89-0589, AE90-0031, AEN91-0739 and XUGA 80409288. Much of the computing work has been done using the IBM PPCS STAGE 2 compute server. The authors are grateful to CERN and IBM for making it available as well as to CERN's PPCS group and especially D.Lord for their help and support in using the PPCS STAGE 2 computer system.

PY - 1995/7/24

Y1 - 1995/7/24

N2 - Measurements of the production of Λ particles in S+Pb and S+S collisions at a beam momentum of 200 GeV/c per nucleon are presented. The S+Pb data was taken with two different experimental configurations, and the results agree well with each other. The effects of a new Monte Carlo simulation of the NA36 TPC on the efficiency calculations are discussed. The Λ rapidity and multiplicity distributions are then compared to three theoretical models of heavy ion interactions, and to the NA35 results. There is still a significant disagreement between the two experiments. The comparison to the models indicates that reinteractions of secondaries are important in explaining the observed Λ yields. Finally, the yields of doubly strange baryons in S+Pb interactions have been recalculated using the new efficiencies. The ratios of double to singly strange baryons are unchanged from the previously published results.

AB - Measurements of the production of Λ particles in S+Pb and S+S collisions at a beam momentum of 200 GeV/c per nucleon are presented. The S+Pb data was taken with two different experimental configurations, and the results agree well with each other. The effects of a new Monte Carlo simulation of the NA36 TPC on the efficiency calculations are discussed. The Λ rapidity and multiplicity distributions are then compared to three theoretical models of heavy ion interactions, and to the NA35 results. There is still a significant disagreement between the two experiments. The comparison to the models indicates that reinteractions of secondaries are important in explaining the observed Λ yields. Finally, the yields of doubly strange baryons in S+Pb interactions have been recalculated using the new efficiencies. The ratios of double to singly strange baryons are unchanged from the previously published results.

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EP - 306

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

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ER -

Recent results from the NA36 experiment

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