Average charged-particle multiplicities inπ−pinclusive reactions at 147 GeV/c
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ID: 270294
1979
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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+B ln 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 〈nX〉 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.
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| Authors | 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;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; |
| Journal | physical review d |
| Year | 1979 |
| DOI |
10.1103/physrevd.19.743
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| URL | |
| Keywords |
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