Inclusive Δ++ production in π-p interactions 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. Sard; A. Snyder; J. Tortora; E. D. Alyea; C. Y. Chien; P. Lucas; A. Pevsner; R. Zdanis; F. Barreiro; O. Benary; J. E. Brau; J. Grunhaus; E. S. Hafen; R. I. Hulsizer; U. Karshon; V. Kistiakowsky; A. Levy; A. Napier; I. A. Pless; J. P. Silverman; P. C. Trepagnier; J. Wolfson; R. K. Yamamoto; H. Cohn; R. F. Jacques; T. C. Ou; R. J. Plano; T. L. Watts; E. B. Brucker; E. L. Koller; P. Stamer; S. Taylor; W. Bugg; G. Condo; T. Handler; E. Hart; H. Kraybill; D. Ljung; T. Ludlam; H. D. Taft

doi:10.1103/PhysRevD.18.3099

Inclusive Δ++ production in π-p interactions 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. Sard, A. Snyder, J. Tortora, E. D. Alyea, C. Y. Chien, P. Lucas, A. PevsnerR. Zdanis, F. Barreiro, O. Benary, J. E. Brau, J. Grunhaus, E. S. Hafen, R. I. Hulsizer, U. Karshon, V. Kistiakowsky, A. Levy, A. Napier, I. A. Pless, J. P. Silverman, P. C. Trepagnier, J. Wolfson, R. K. Yamamoto, H. Cohn, R. F. Jacques, T. C. Ou, R. J. Plano, T. L. Watts, E. B. Brucker, E. L. Koller, P. Stamer, S. Taylor, W. Bugg, G. Condo, T. Handler, E. Hart, H. Kraybill, D. Ljung, T. Ludlam, H. D. Taft

^*Corresponding author for this work

Department of Particle Physics and Astrophysics

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

6 Citations (Scopus)

Abstract

The inclusive production of the Δ++(1232) resonance in π-p collisions at 147 GeV/c has been studied. The Δ++ is found to be produced in comparable amounts in four-, six-, eight-, and ten-prong events. The Feynman-x, t′, PT2, and the decay angular distributions of the Δ++ are found to be consistent with the predictions of a one-pion-exchange model with absorption. Essentially all of the Δ++ are found to be associated with a Δ++π- low-mass enhancement. The Δ++ cross section is approximately constant from 11 to 205 GeV/c, which could indicate that the Δ++ is a decay product of a target-fragmentation object. While the one-pion-exchange character of the Δ++ production and the target-fragmentation character of the Δ++π- low-mass enhancement can both be described in terms of a Deck-type diagram, a Monte Carlo study indicates that any mechanism that produces particles with limited transverse momentum will yield a Δ++π- low-mass enhancement.

Original language	English
Pages (from-to)	3099-3114
Number of pages	16
Journal	Physical review D
Volume	18
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.18.3099
Publication status	Published - 1 Nov 1978

Funding

This work was supported in part by the U. S. Department of Energy and the National Science Foundation. We wish to thank the personnel of the Fermilab neutrino section and the 30-inch bubble-chamber facility whose skills and efforts made this experiment possible. We also thank the personnel of the participating universities and our data reduction personnel whose dedicated skills were vital to the success of this work. The authors would like to thank C. E. DeTar for enlightening comments and discussions.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.18.3099

http://cds.cern.ch/record/1006109

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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., Snyder, A., Tortora, J., Alyea, E. D., Chien, C. Y., Lucas, P., ... Taft, H. D. (1978). Inclusive Δ++ production in π-p interactions at 147 GeV/c. Physical review D, 18(9), 3099-3114. https://doi.org/10.1103/PhysRevD.18.3099

@article{f73393e7be894efd9d446dd60785fd0c,

title = "Inclusive Δ++ production in π-p interactions at 147 GeV/c",

abstract = "The inclusive production of the Δ++(1232) resonance in π-p collisions at 147 GeV/c has been studied. The Δ++ is found to be produced in comparable amounts in four-, six-, eight-, and ten-prong events. The Feynman-x, t′, PT2, and the decay angular distributions of the Δ++ are found to be consistent with the predictions of a one-pion-exchange model with absorption. Essentially all of the Δ++ are found to be associated with a Δ++π- low-mass enhancement. The Δ++ cross section is approximately constant from 11 to 205 GeV/c, which could indicate that the Δ++ is a decay product of a target-fragmentation object. While the one-pion-exchange character of the Δ++ production and the target-fragmentation character of the Δ++π- low-mass enhancement can both be described in terms of a Deck-type diagram, a Monte Carlo study indicates that any mechanism that produces particles with limited transverse momentum will yield a Δ++π- low-mass enhancement.",

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 R. Sard 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 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 Trepagnier, {P. C.} and J. Wolfson and Yamamoto, {R. K.} and H. Cohn and Jacques, {R. F.} and Ou, {T. C.} and Plano, {R. J.} and Watts, {T. L.} and Brucker, {E. B.} and Koller, {E. L.} and P. Stamer and S. Taylor and W. Bugg and G. Condo and T. Handler and E. Hart and H. Kraybill and D. Ljung and T. Ludlam and Taft, {H. D.}",

year = "1978",

month = nov,

day = "1",

doi = "10.1103/PhysRevD.18.3099",

language = "English",

volume = "18",

pages = "3099--3114",

journal = "Physical review D",

issn = "0556-2821",

publisher = "American Physical Society",

number = "9",

}

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, R, Snyder, A, Tortora, J, Alyea, ED, Chien, CY, Lucas, P, Pevsner, A, Zdanis, R, Barreiro, F, Benary, O, Brau, JE, Grunhaus, J, Hafen, ES, Hulsizer, RI, Karshon, U, Kistiakowsky, V, Levy, A, Napier, A, Pless, IA, Silverman, JP, Trepagnier, PC, Wolfson, J, Yamamoto, RK, Cohn, H, Jacques, RF, Ou, TC, Plano, RJ, Watts, TL, Brucker, EB, Koller, EL, Stamer, P, Taylor, S, Bugg, W, Condo, G, Handler, T, Hart, E, Kraybill, H, Ljung, D, Ludlam, T & Taft, HD 1978, 'Inclusive Δ++ production in π-p interactions at 147 GeV/c', Physical review D, vol. 18, no. 9, pp. 3099-3114. https://doi.org/10.1103/PhysRevD.18.3099

TY - JOUR

T1 - Inclusive Δ++ production in π-p interactions 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.

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 - 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 - Trepagnier, P. C.

AU - Wolfson, J.

AU - Yamamoto, R. K.

AU - Cohn, H.

AU - Jacques, R. F.

AU - Ou, T. C.

AU - Plano, R. J.

AU - Watts, T. L.

AU - Brucker, E. B.

AU - Koller, E. L.

AU - Stamer, P.

AU - Taylor, S.

AU - Bugg, W.

AU - Condo, G.

AU - Handler, T.

AU - Hart, E.

AU - Kraybill, H.

AU - Ljung, D.

AU - Ludlam, T.

AU - Taft, H. D.

PY - 1978/11/1

Y1 - 1978/11/1

N2 - The inclusive production of the Δ++(1232) resonance in π-p collisions at 147 GeV/c has been studied. The Δ++ is found to be produced in comparable amounts in four-, six-, eight-, and ten-prong events. The Feynman-x, t′, PT2, and the decay angular distributions of the Δ++ are found to be consistent with the predictions of a one-pion-exchange model with absorption. Essentially all of the Δ++ are found to be associated with a Δ++π- low-mass enhancement. The Δ++ cross section is approximately constant from 11 to 205 GeV/c, which could indicate that the Δ++ is a decay product of a target-fragmentation object. While the one-pion-exchange character of the Δ++ production and the target-fragmentation character of the Δ++π- low-mass enhancement can both be described in terms of a Deck-type diagram, a Monte Carlo study indicates that any mechanism that produces particles with limited transverse momentum will yield a Δ++π- low-mass enhancement.

AB - The inclusive production of the Δ++(1232) resonance in π-p collisions at 147 GeV/c has been studied. The Δ++ is found to be produced in comparable amounts in four-, six-, eight-, and ten-prong events. The Feynman-x, t′, PT2, and the decay angular distributions of the Δ++ are found to be consistent with the predictions of a one-pion-exchange model with absorption. Essentially all of the Δ++ are found to be associated with a Δ++π- low-mass enhancement. The Δ++ cross section is approximately constant from 11 to 205 GeV/c, which could indicate that the Δ++ is a decay product of a target-fragmentation object. While the one-pion-exchange character of the Δ++ production and the target-fragmentation character of the Δ++π- low-mass enhancement can both be described in terms of a Deck-type diagram, a Monte Carlo study indicates that any mechanism that produces particles with limited transverse momentum will yield a Δ++π- low-mass enhancement.

UR - http://www.scopus.com/inward/record.url?scp=35949036438&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.18.3099

DO - 10.1103/PhysRevD.18.3099

M3 - Article

AN - SCOPUS:35949036438

SN - 0556-2821

VL - 18

SP - 3099

EP - 3114

JO - Physical review D

JF - Physical review D

IS - 9

ER -

Inclusive Δ++ production in π-p interactions at 147 GeV/c

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