Direct photon production in pp and pp interactions at √s = 24.3 GeV

G. Sozzi; G. Ballocchi; A. Bernasconi; R. E. Breedon; L. Camilleri; R. L. Cool; P. T. Cox; P. Cushman; L. Dick; E. C. Dukes; B. Gabioud; F. Gaille; P. Giacomelli; D. Hubbard; J. B. Jeanneret; C. Joseph; W. Kubischta; J. F. Loude; E. Malamud; C. Morel; P. Oberson; O. E. Overseth; J. L. Pagès; J. P. Perroud; D. Rüegger; R. W. Rusack; V. Singh; G. R. Snow; D. Steiner; L. Studer; M. T. Tran; A. Vacchi; G. Valenti; M. Werlen

doi:10.1016/0370-2693(93)91600-R

Direct photon production in pp and pp interactions at √s = 24.3 GeV

G. Sozzi, G. Ballocchi, A. Bernasconi, R. E. Breedon, L. Camilleri, R. L. Cool, P. T. Cox, P. Cushman, L. Dick, E. C. Dukes, B. Gabioud, F. Gaille, P. Giacomelli, D. Hubbard, J. B. Jeanneret, C. Joseph, W. Kubischta, J. F. Loude, E. Malamud, C. MorelP. Oberson, O. E. Overseth, J. L. Pagès, J. P. Perroud, D. Rüegger, R. W. Rusack, V. Singh, G. R. Snow, D. Steiner, L. Studer, M. T. Tran, A. Vacchi, G. Valenti, M. Werlen

Physics and Astronomy (Twin Cities)

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Abstract

Inclusive direct photon invariant cross sections have been measured in both pp and pp collisions at √s = 24.3 GeV at the CERN SPS, permitting the first measurement of the difference of the pp and pp cross sections. The direct photon cross section in pp collisions has been found to be systematically larger than that in pp collisions, which indicates a significant contribution of the qq annihilation term as predicted by theoretical calculations.

Original language	English (US)
Pages (from-to)	243-249
Number of pages	7
Journal	Physics Letters B
Volume	317
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(93)91600-R
State	Published - Nov 4 1993

Bibliographical note

Funding Information:
We would like to thank the CERN staff, particularly those in the SPS and CN divisions, without whom this experiment would not have been possible. The following funding agencies provided support: the Swiss National Funding Agency, the US Department of Energy, and the US National Science Foundation. We are grateful for the continued efforts of our secretarial and technical staff.

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Sozzi, G., Ballocchi, G., Bernasconi, A., Breedon, R. E., Camilleri, L., Cool, R. L., Cox, P. T., Cushman, P., Dick, L., Dukes, E. C., Gabioud, B., Gaille, F., Giacomelli, P., Hubbard, D., Jeanneret, J. B., Joseph, C., Kubischta, W., Loude, J. F., Malamud, E., ... Werlen, M. (1993). Direct photon production in pp and pp interactions at √s = 24.3 GeV. Physics Letters B, 317(1-2), 243-249. https://doi.org/10.1016/0370-2693(93)91600-R

Sozzi, G, Ballocchi, G, Bernasconi, A, Breedon, RE, Camilleri, L, Cool, RL, Cox, PT, Cushman, P, Dick, L, Dukes, EC, Gabioud, B, Gaille, F, Giacomelli, P, Hubbard, D, Jeanneret, JB, Joseph, C, Kubischta, W, Loude, JF, Malamud, E, Morel, C, Oberson, P, Overseth, OE, Pagès, JL, Perroud, JP, Rüegger, D, Rusack, RW, Singh, V, Snow, GR, Steiner, D, Studer, L, Tran, MT, Vacchi, A, Valenti, G & Werlen, M 1993, 'Direct photon production in pp and pp interactions at √s = 24.3 GeV', Physics Letters B, vol. 317, no. 1-2, pp. 243-249. https://doi.org/10.1016/0370-2693(93)91600-R

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title = "Direct photon production in pp and pp interactions at √s = 24.3 GeV",

abstract = "Inclusive direct photon invariant cross sections have been measured in both pp and pp collisions at √s = 24.3 GeV at the CERN SPS, permitting the first measurement of the difference of the pp and pp cross sections. The direct photon cross section in pp collisions has been found to be systematically larger than that in pp collisions, which indicates a significant contribution of the qq annihilation term as predicted by theoretical calculations.",

author = "G. Sozzi and G. Ballocchi and A. Bernasconi and Breedon, {R. E.} and L. Camilleri and Cool, {R. L.} and Cox, {P. T.} and P. Cushman and L. Dick and Dukes, {E. C.} and B. Gabioud and F. Gaille and P. Giacomelli and D. Hubbard and Jeanneret, {J. B.} and C. Joseph and W. Kubischta and Loude, {J. F.} and E. Malamud and C. Morel and P. Oberson and Overseth, {O. E.} and Pag{\`e}s, {J. L.} and Perroud, {J. P.} and D. R{\"u}egger and Rusack, {R. W.} and V. Singh and Snow, {G. R.} and D. Steiner and L. Studer and Tran, {M. T.} and A. Vacchi and G. Valenti and M. Werlen",

note = "Funding Information: We would like to thank the CERN staff, particularly those in the SPS and CN divisions, without whom this experiment would not have been possible. The following funding agencies provided support: the Swiss National Funding Agency, the US Department of Energy, and the US National Science Foundation. We are grateful for the continued efforts of our secretarial and technical staff.",

year = "1993",

month = nov,

day = "4",

doi = "10.1016/0370-2693(93)91600-R",

language = "English (US)",

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pages = "243--249",

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T1 - Direct photon production in pp and pp interactions at √s = 24.3 GeV

AU - Sozzi, G.

AU - Ballocchi, G.

AU - Bernasconi, A.

AU - Breedon, R. E.

AU - Camilleri, L.

AU - Cool, R. L.

AU - Cox, P. T.

AU - Cushman, P.

AU - Dick, L.

AU - Dukes, E. C.

AU - Gabioud, B.

AU - Gaille, F.

AU - Giacomelli, P.

AU - Hubbard, D.

AU - Jeanneret, J. B.

AU - Joseph, C.

AU - Kubischta, W.

AU - Loude, J. F.

AU - Malamud, E.

AU - Morel, C.

AU - Oberson, P.

AU - Overseth, O. E.

AU - Pagès, J. L.

AU - Perroud, J. P.

AU - Rüegger, D.

AU - Rusack, R. W.

AU - Singh, V.

AU - Snow, G. R.

AU - Steiner, D.

AU - Studer, L.

AU - Tran, M. T.

AU - Vacchi, A.

AU - Valenti, G.

AU - Werlen, M.

N1 - Funding Information: We would like to thank the CERN staff, particularly those in the SPS and CN divisions, without whom this experiment would not have been possible. The following funding agencies provided support: the Swiss National Funding Agency, the US Department of Energy, and the US National Science Foundation. We are grateful for the continued efforts of our secretarial and technical staff.

PY - 1993/11/4

Y1 - 1993/11/4

N2 - Inclusive direct photon invariant cross sections have been measured in both pp and pp collisions at √s = 24.3 GeV at the CERN SPS, permitting the first measurement of the difference of the pp and pp cross sections. The direct photon cross section in pp collisions has been found to be systematically larger than that in pp collisions, which indicates a significant contribution of the qq annihilation term as predicted by theoretical calculations.

AB - Inclusive direct photon invariant cross sections have been measured in both pp and pp collisions at √s = 24.3 GeV at the CERN SPS, permitting the first measurement of the difference of the pp and pp cross sections. The direct photon cross section in pp collisions has been found to be systematically larger than that in pp collisions, which indicates a significant contribution of the qq annihilation term as predicted by theoretical calculations.

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EP - 249

JO - Physics Letters B

JF - Physics Letters B

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ER -

Direct photon production in pp and pp interactions at √s = 24.3 GeV

Abstract

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