Search for direct gamma production at low transverse momentum in 63-GeV pp collisions

T. Akesson; M. G. Albrow; S. Almehed; E. Anassontzis; R. Batley; O. Benary; H. Boggild; O. Botner; H. Breuker; V. Burkert; B. Callen; R. Carosi; A. A. Carter; J. R. Carter; V. Chernyatin; Y. Choi; W. E. Cleland; S. Dagan; E. Dahl-Jensen; I. Dahl-Jensen; G. Damgaard; B. Dolgoshein; S. Eidelman; C. W. Fabjan; I. Gavrilenko; G. U. Goerlach; C. Y. Goloubkov; K. H. Hansen; V. Hedberg; P. Ioannou; G. Jarlskog; T. Jensen; A. Kalinovsky; V. Kantserov; S. Katsanevas; C. Kourkoumelis; R. Kroeger; K. Kulka; D. Lissauer; B. Lörstad; I. Manelli; A. Markou; S. Mayburov; N. A. McCubbin; R. Moller; W. Molzon; P. Nevsky; B. S. Nielsen; L. H. Olsen; Y. Oren; L. K. Resvanis; J. Schukraft; A. Shmeleva; V. Sidorov; H. Specht; I. Stumer; M. Sullivan; H. H. Thodberg; J. A. Thompson; J. Williamson; J. Willisc

doi:10.1103/PhysRevD.36.2615

Search for direct gamma production at low transverse momentum in 63-GeV pp collisions

T. Akesson^*, M. G. Albrow, S. Almehed, E. Anassontzis, R. Batley, O. Benary, H. Boggild, O. Botner, H. Breuker, V. Burkert, B. Callen, R. Carosi, A. A. Carter, J. R. Carter, V. Chernyatin, Y. Choi, W. E. Cleland, S. Dagan, E. Dahl-Jensen, I. Dahl-JensenG. Damgaard, B. Dolgoshein, S. Eidelman, C. W. Fabjan, I. Gavrilenko, G. U. Goerlach, C. Y. Goloubkov, K. H. Hansen, V. Hedberg, P. Ioannou, G. Jarlskog, T. Jensen, A. Kalinovsky, V. Kantserov, S. Katsanevas, C. Kourkoumelis, R. Kroeger, K. Kulka, D. Lissauer, B. Lörstad, I. Manelli, A. Markou, S. Mayburov, N. A. McCubbin, R. Moller, W. Molzon, P. Nevsky, B. S. Nielsen, L. H. Olsen, Y. Oren, L. K. Resvanis, J. Schukraft, A. Shmeleva, V. Sidorov, H. Specht, I. Stumer, M. Sullivan, H. H. Thodberg, J. A. Thompson, J. Williamson, J. Willisc

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School of Physics and Astronomy

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Abstract

We have searched for direct photons of low PT (1.0 GeV/c) at c.m.=90° in pp collisions at s =63 GeV. We used two independent methods: direct detection in NaI crystals and conversion to e+e- pairs. No signal is observed; the photon spectrum is well described by the decay of hadrons. The result is consistent with a direct low-PT photon signal reported at s =12 GeV, but excludes a rapid growth of soft-photon production with s.

Original language	English
Pages (from-to)	2615-2623
Number of pages	9
Journal	Physical Review D
Volume	36
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.36.2615
State	Published - 1987

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Akesson, T., Albrow, M. G., Almehed, S., Anassontzis, E., Batley, R., Benary, O., Boggild, H., Botner, O., Breuker, H., Burkert, V., Callen, B., Carosi, R., Carter, A. A., Carter, J. R., Chernyatin, V., Choi, Y., Cleland, W. E., Dagan, S., Dahl-Jensen, E., ... Willisc, J. (1987). Search for direct gamma production at low transverse momentum in 63-GeV pp collisions. Physical Review D, 36(9), 2615-2623. https://doi.org/10.1103/PhysRevD.36.2615

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title = "Search for direct gamma production at low transverse momentum in 63-GeV pp collisions",

abstract = "We have searched for direct photons of low PT (1.0 GeV/c) at c.m.=90° in pp collisions at s =63 GeV. We used two independent methods: direct detection in NaI crystals and conversion to e+e- pairs. No signal is observed; the photon spectrum is well described by the decay of hadrons. The result is consistent with a direct low-PT photon signal reported at s =12 GeV, but excludes a rapid growth of soft-photon production with s.",

author = "T. Akesson and Albrow, {M. G.} and S. Almehed and E. Anassontzis and R. Batley and O. Benary and H. Boggild and O. Botner and H. Breuker and V. Burkert and B. Callen and R. Carosi and Carter, {A. A.} and Carter, {J. R.} and V. Chernyatin and Y. Choi and Cleland, {W. E.} and S. Dagan and E. Dahl-Jensen and I. Dahl-Jensen and G. Damgaard and B. Dolgoshein and S. Eidelman and Fabjan, {C. W.} and I. Gavrilenko and Goerlach, {G. U.} and Goloubkov, {C. Y.} and Hansen, {K. H.} and V. Hedberg and P. Ioannou and G. Jarlskog and T. Jensen and A. Kalinovsky and V. Kantserov and S. Katsanevas and C. Kourkoumelis and R. Kroeger and K. Kulka and D. Lissauer and B. L{\"o}rstad and I. Manelli and A. Markou and S. Mayburov and McCubbin, {N. A.} and R. Moller and W. Molzon and P. Nevsky and Nielsen, {B. S.} and Olsen, {L. H.} and Y. Oren and Resvanis, {L. K.} and J. Schukraft and A. Shmeleva and V. Sidorov and H. Specht and I. Stumer and M. Sullivan and Thodberg, {H. H.} and Thompson, {J. A.} and J. Williamson and J. Willisc",

year = "1987",

doi = "10.1103/PhysRevD.36.2615",

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pages = "2615--2623",

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Akesson, T, Albrow, MG, Almehed, S, Anassontzis, E, Batley, R, Benary, O, Boggild, H, Botner, O, Breuker, H, Burkert, V, Callen, B, Carosi, R, Carter, AA, Carter, JR, Chernyatin, V, Choi, Y, Cleland, WE, Dagan, S, Dahl-Jensen, E, Dahl-Jensen, I, Damgaard, G, Dolgoshein, B, Eidelman, S, Fabjan, CW, Gavrilenko, I, Goerlach, GU, Goloubkov, CY, Hansen, KH, Hedberg, V, Ioannou, P, Jarlskog, G, Jensen, T, Kalinovsky, A, Kantserov, V, Katsanevas, S, Kourkoumelis, C, Kroeger, R, Kulka, K, Lissauer, D, Lörstad, B, Manelli, I, Markou, A, Mayburov, S, McCubbin, NA, Moller, R, Molzon, W, Nevsky, P, Nielsen, BS, Olsen, LH, Oren, Y, Resvanis, LK, Schukraft, J, Shmeleva, A, Sidorov, V, Specht, H, Stumer, I, Sullivan, M, Thodberg, HH, Thompson, JA, Williamson, J & Willisc, J 1987, 'Search for direct gamma production at low transverse momentum in 63-GeV pp collisions', Physical Review D, vol. 36, no. 9, pp. 2615-2623. https://doi.org/10.1103/PhysRevD.36.2615

TY - JOUR

T1 - Search for direct gamma production at low transverse momentum in 63-GeV pp collisions

AU - Akesson, T.

AU - Albrow, M. G.

AU - Almehed, S.

AU - Anassontzis, E.

AU - Batley, R.

AU - Benary, O.

AU - Boggild, H.

AU - Botner, O.

AU - Breuker, H.

AU - Burkert, V.

AU - Callen, B.

AU - Carosi, R.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chernyatin, V.

AU - Choi, Y.

AU - Cleland, W. E.

AU - Dagan, S.

AU - Dahl-Jensen, E.

AU - Dahl-Jensen, I.

AU - Damgaard, G.

AU - Dolgoshein, B.

AU - Eidelman, S.

AU - Fabjan, C. W.

AU - Gavrilenko, I.

AU - Goerlach, G. U.

AU - Goloubkov, C. Y.

AU - Hansen, K. H.

AU - Hedberg, V.

AU - Ioannou, P.

AU - Jarlskog, G.

AU - Jensen, T.

AU - Kalinovsky, A.

AU - Kantserov, V.

AU - Katsanevas, S.

AU - Kourkoumelis, C.

AU - Kroeger, R.

AU - Kulka, K.

AU - Lissauer, D.

AU - Lörstad, B.

AU - Manelli, I.

AU - Markou, A.

AU - Mayburov, S.

AU - McCubbin, N. A.

AU - Moller, R.

AU - Molzon, W.

AU - Nevsky, P.

AU - Nielsen, B. S.

AU - Olsen, L. H.

AU - Oren, Y.

AU - Resvanis, L. K.

AU - Schukraft, J.

AU - Shmeleva, A.

AU - Sidorov, V.

AU - Specht, H.

AU - Stumer, I.

AU - Sullivan, M.

AU - Thodberg, H. H.

AU - Thompson, J. A.

AU - Williamson, J.

AU - Willisc, J.

PY - 1987

Y1 - 1987

N2 - We have searched for direct photons of low PT (1.0 GeV/c) at c.m.=90° in pp collisions at s =63 GeV. We used two independent methods: direct detection in NaI crystals and conversion to e+e- pairs. No signal is observed; the photon spectrum is well described by the decay of hadrons. The result is consistent with a direct low-PT photon signal reported at s =12 GeV, but excludes a rapid growth of soft-photon production with s.

AB - We have searched for direct photons of low PT (1.0 GeV/c) at c.m.=90° in pp collisions at s =63 GeV. We used two independent methods: direct detection in NaI crystals and conversion to e+e- pairs. No signal is observed; the photon spectrum is well described by the decay of hadrons. The result is consistent with a direct low-PT photon signal reported at s =12 GeV, but excludes a rapid growth of soft-photon production with s.

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U2 - 10.1103/PhysRevD.36.2615

DO - 10.1103/PhysRevD.36.2615

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:4243906452

SN - 0556-2821

VL - 36

SP - 2615

EP - 2623

JO - Physical Review D

JF - Physical Review D

IS - 9

ER -

Search for direct gamma production at low transverse momentum in 63-GeV pp collisions

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