Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c

D. Brick; D. Fong; M. Heller; A. M. Shapiro; M. Widgoff; F. Bruyant; D. Bogert; M. Johnson; R. Burnstein; C. Fu; D. Petersen; M. Robertson; H. Rubin; R. D. Sard; A. Snyder; J. Tortora; E. D. Alyea; C. Y. Chien; P. Lucas; A. Pevsner; R. Zdanis; F. Barreiro; O. Benary; J. E. Brau; C. E. DeTar; J. Grunhaus; E. S. Hafen; R. I. Hulsizer; U. Karshon; V. Kistiakowsky; A. Levy; A. Napier; I. A. Pless; J. P. Silverman; T. Stoughton; P. C. Trepagnier; J. Wolfson; R. K. Yamamoto; H. O. Cohn; P. F. Jacques; T. C. Ou; R. J. Plano; T. L. Watts; E. B. Brucker; E. Koller; P. Stamer; S. Taylor; W. M. Bugg; G. Condo; T. Handler; E. Hart; H. Kraybill; D. Ljung; T. Ludlam; H. D. Taft

doi:10.1103/PhysRevD.19.743

Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c

D. Brick, D. Fong^*, M. Heller, A. M. Shapiro, M. Widgoff, F. Bruyant, D. Bogert, M. Johnson, R. Burnstein, C. Fu, D. Petersen, M. Robertson, H. Rubin, R. D. Sard, A. Snyder, J. Tortora, E. D. Alyea, C. Y. Chien, P. Lucas, A. PevsnerR. Zdanis, F. Barreiro, O. Benary, J. E. Brau, C. E. DeTar, J. Grunhaus, E. S. Hafen, R. I. Hulsizer, U. Karshon, V. Kistiakowsky, A. Levy, A. Napier, I. A. Pless, J. P. Silverman, T. Stoughton, P. C. Trepagnier, J. Wolfson, R. K. Yamamoto, H. O. Cohn, P. F. Jacques, T. C. Ou, R. J. Plano, T. L. Watts, E. B. Brucker, E. Koller, P. Stamer, S. Taylor, W. M. Bugg, G. Condo, T. Handler, E. Hart, H. Kraybill, D. Ljung, T. Ludlam, H. D. Taft

^*Corresponding author for this work

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Abstract

The experimentally determined average charged-particle multiplicities, nX, of the systems, X, produced in the following reactions for 147 GeV/c incident pion momentum are presented as functions of the square of the invariant mass of X, MX2, and of |t|:π-p→πfast-X, π-p→pX, π-p→Δ++X, π-p→(π-π+)ρ0X, and π-p→Λ0X. Details of the analysis are discussed. These data can be fit by the expression nX=A+Bln MX2+C|t| and the coefficients obtained for B are equal within their uncertainties. C is significantly different from zero only for π-p→πfast-X. These results and X data from other inclusive and total-inelastic-reaction studies are discussed in terms of a simple model which assumes contributions to nX from the target-fragmentation, the central, and the beam-fragmentation regions in the case of total-inelastic reactions. For inclusive reactions, either the beam or target fragmentation is replaced by an exchange-particle-fragmentation contribution. The s, t, and MX2 dependence of the parameters of the model are deduced from triple-Regge considerations. The data are found to be consistent with the model and values are presented for the parameters.

Original language	English
Pages (from-to)	743-763
Number of pages	21
Journal	Physical review D
Volume	19
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.19.743
Publication status	Published - 1 Feb 1979

Funding

This work was suyported in part by the U. S. Department of Energy and the National Science Foundation. We gratefully acknowlege the efforts on behalf of this experiment by the Fermilab Neutrino Section and 30-inch bubble-chamber staffs and the spanning and measuring personnel of the participating institutions. One of us (J.E. Brau) would like to thank the John and Fannie Hertz Foundation for financial support.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.19.743

http://cds.cern.ch/record/968046

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Brick, D., Fong, D., Heller, M., Shapiro, A. M., Widgoff, M., Bruyant, F., Bogert, D., Johnson, M., Burnstein, R., Fu, C., Petersen, D., Robertson, M., Rubin, H., Sard, R. D., Snyder, A., Tortora, J., Alyea, E. D., Chien, C. Y., Lucas, P., ... Taft, H. D. (1979). Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c. Physical review D, 19(3), 743-763. https://doi.org/10.1103/PhysRevD.19.743

@article{40dfbdbca7c24a178830fc717a356d7a,

title = "Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c",

abstract = "The experimentally determined average charged-particle multiplicities, nX, of the systems, X, produced in the following reactions for 147 GeV/c incident pion momentum are presented as functions of the square of the invariant mass of X, MX2, and of |t|:π-p→πfast-X, π-p→pX, π-p→Δ++X, π-p→(π-π+)ρ0X, and π-p→Λ0X. Details of the analysis are discussed. These data can be fit by the expression nX=A+Bln MX2+C|t| and the coefficients obtained for B are equal within their uncertainties. C is significantly different from zero only for π-p→πfast-X. These results and X data from other inclusive and total-inelastic-reaction studies are discussed in terms of a simple model which assumes contributions to nX from the target-fragmentation, the central, and the beam-fragmentation regions in the case of total-inelastic reactions. For inclusive reactions, either the beam or target fragmentation is replaced by an exchange-particle-fragmentation contribution. The s, t, and MX2 dependence of the parameters of the model are deduced from triple-Regge considerations. The data are found to be consistent with the model and values are presented for the parameters.",

author = "D. Brick and D. Fong and M. Heller and Shapiro, {A. M.} and M. Widgoff and F. Bruyant and D. Bogert and M. Johnson and R. Burnstein and C. Fu and D. Petersen and M. Robertson and H. Rubin and Sard, {R. D.} and A. Snyder and J. Tortora and Alyea, {E. D.} and Chien, {C. Y.} and P. Lucas and A. Pevsner and R. Zdanis and F. Barreiro and O. Benary and Brau, {J. E.} and DeTar, {C. E.} and J. Grunhaus and Hafen, {E. S.} and Hulsizer, {R. I.} and U. Karshon and V. Kistiakowsky and A. Levy and A. Napier and Pless, {I. A.} and Silverman, {J. P.} and T. Stoughton and Trepagnier, {P. C.} and J. Wolfson and Yamamoto, {R. K.} and Cohn, {H. O.} and Jacques, {P. F.} and Ou, {T. C.} and Plano, {R. J.} and Watts, {T. L.} and Brucker, {E. B.} and E. Koller and P. Stamer and S. Taylor and Bugg, {W. M.} and G. Condo and T. Handler and E. Hart and H. Kraybill and D. Ljung and T. Ludlam and Taft, {H. D.}",

year = "1979",

month = feb,

day = "1",

doi = "10.1103/PhysRevD.19.743",

language = "English",

volume = "19",

pages = "743--763",

journal = "Physical review D",

issn = "0556-2821",

publisher = "American Physical Society",

number = "3",

}

Brick, D, Fong, D, Heller, M, Shapiro, AM, Widgoff, M, Bruyant, F, Bogert, D, Johnson, M, Burnstein, R, Fu, C, Petersen, D, Robertson, M, Rubin, H, Sard, RD, Snyder, A, Tortora, J, Alyea, ED, Chien, CY, Lucas, P, Pevsner, A, Zdanis, R, Barreiro, F, Benary, O, Brau, JE, DeTar, CE, Grunhaus, J, Hafen, ES, Hulsizer, RI, Karshon, U, Kistiakowsky, V, Levy, A, Napier, A, Pless, IA, Silverman, JP, Stoughton, T, Trepagnier, PC, Wolfson, J, Yamamoto, RK, Cohn, HO, Jacques, PF, Ou, TC, Plano, RJ, Watts, TL, Brucker, EB, Koller, E, Stamer, P, Taylor, S, Bugg, WM, Condo, G, Handler, T, Hart, E, Kraybill, H, Ljung, D, Ludlam, T & Taft, HD 1979, 'Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c', Physical review D, vol. 19, no. 3, pp. 743-763. https://doi.org/10.1103/PhysRevD.19.743

TY - JOUR

T1 - Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c

AU - Brick, D.

AU - Fong, D.

AU - Heller, M.

AU - Shapiro, A. M.

AU - Widgoff, M.

AU - Bruyant, F.

AU - Bogert, D.

AU - Johnson, M.

AU - Burnstein, R.

AU - Fu, C.

AU - Petersen, D.

AU - Robertson, M.

AU - Rubin, H.

AU - Sard, R. D.

AU - Snyder, A.

AU - Tortora, J.

AU - Alyea, E. D.

AU - Chien, C. Y.

AU - Lucas, P.

AU - Pevsner, A.

AU - Zdanis, R.

AU - Barreiro, F.

AU - Benary, O.

AU - Brau, J. E.

AU - DeTar, C. E.

AU - Grunhaus, J.

AU - Hafen, E. S.

AU - Hulsizer, R. I.

AU - Karshon, U.

AU - Kistiakowsky, V.

AU - Levy, A.

AU - Napier, A.

AU - Pless, I. A.

AU - Silverman, J. P.

AU - Stoughton, T.

AU - Trepagnier, P. C.

AU - Wolfson, J.

AU - Yamamoto, R. K.

AU - Cohn, H. O.

AU - Jacques, P. F.

AU - Ou, T. C.

AU - Plano, R. J.

AU - Watts, T. L.

AU - Brucker, E. B.

AU - Koller, E.

AU - Stamer, P.

AU - Taylor, S.

AU - Bugg, W. M.

AU - Condo, G.

AU - Handler, T.

AU - Hart, E.

AU - Kraybill, H.

AU - Ljung, D.

AU - Ludlam, T.

AU - Taft, H. D.

PY - 1979/2/1

Y1 - 1979/2/1

N2 - The experimentally determined average charged-particle multiplicities, nX, of the systems, X, produced in the following reactions for 147 GeV/c incident pion momentum are presented as functions of the square of the invariant mass of X, MX2, and of |t|:π-p→πfast-X, π-p→pX, π-p→Δ++X, π-p→(π-π+)ρ0X, and π-p→Λ0X. Details of the analysis are discussed. These data can be fit by the expression nX=A+Bln MX2+C|t| and the coefficients obtained for B are equal within their uncertainties. C is significantly different from zero only for π-p→πfast-X. These results and X data from other inclusive and total-inelastic-reaction studies are discussed in terms of a simple model which assumes contributions to nX from the target-fragmentation, the central, and the beam-fragmentation regions in the case of total-inelastic reactions. For inclusive reactions, either the beam or target fragmentation is replaced by an exchange-particle-fragmentation contribution. The s, t, and MX2 dependence of the parameters of the model are deduced from triple-Regge considerations. The data are found to be consistent with the model and values are presented for the parameters.

AB - The experimentally determined average charged-particle multiplicities, nX, of the systems, X, produced in the following reactions for 147 GeV/c incident pion momentum are presented as functions of the square of the invariant mass of X, MX2, and of |t|:π-p→πfast-X, π-p→pX, π-p→Δ++X, π-p→(π-π+)ρ0X, and π-p→Λ0X. Details of the analysis are discussed. These data can be fit by the expression nX=A+Bln MX2+C|t| and the coefficients obtained for B are equal within their uncertainties. C is significantly different from zero only for π-p→πfast-X. These results and X data from other inclusive and total-inelastic-reaction studies are discussed in terms of a simple model which assumes contributions to nX from the target-fragmentation, the central, and the beam-fragmentation regions in the case of total-inelastic reactions. For inclusive reactions, either the beam or target fragmentation is replaced by an exchange-particle-fragmentation contribution. The s, t, and MX2 dependence of the parameters of the model are deduced from triple-Regge considerations. The data are found to be consistent with the model and values are presented for the parameters.

UR - http://www.scopus.com/inward/record.url?scp=35949028647&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.19.743

DO - 10.1103/PhysRevD.19.743

M3 - Article

AN - SCOPUS:35949028647

SN - 0556-2821

VL - 19

SP - 743

EP - 763

JO - Physical review D

JF - Physical review D

IS - 3

ER -

Average charged-particle multiplicities in π-p inclusive reactions at 147 GeV/c

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