Exclusive production of proton-antiproton pairs in photon-photon collisions

W. Bartel; L. Becker; D. Cords; R. Felst; D. Haidt; G. Knies; H. Krehbiel; P. Laurikainen; N. Magnussen; R. Meinke; B. Naroska; J. Olsson; D. Schmidt; P. Steffen; G. Dietrich; J. Hagemann; G. Heinzelmann; H. Kado; K. Kawagoe; C. Kleinwort; M. Kuhlen; A. Petersen; R. Ramcke; U. Schneekloth; G. Weber; K. Ambrus; S. Bethke; A. Dieckmann; E. Elsen; J. Heintze; K. H. Hellenbrand; S. Komamiya; J. Von Krogh; P. Lennert; H. Matsumura; H. Rieseberg; J. Spitzer; A. Wagner; C. K. Bowdery; A. J. Finch; F. Foster; G. Hughes; J. M. Nye; J. Allison; A. H. Ball; R. J. Barlow; J. Chrin; I. P. Duerdoth; T. Greenshaw; F. K. Loebinger; A. A. Macbeth; H. E. Mills; P. G. Murphy; K. Stephens; P. Warming; R. G. Glasser; P. Hill; J. A.J. Skard; S. R. Wagner; G. T. Zorn; S. L. Cartwright; D. Clarke; R. Marshall; R. P. Middleton; T. Kawamoto; T. Kobayashi; H. Takeda; T. Takeshita; S. Yamada

doi:10.1016/0370-2693(86)91114-7

Exclusive production of proton-antiproton pairs in photon-photon collisions

W. Bartel, L. Becker, D. Cords, R. Felst, D. Haidt, G. Knies, H. Krehbiel, P. Laurikainen, N. Magnussen, R. Meinke, B. Naroska, J. Olsson, D. Schmidt, P. Steffen, G. Dietrich, J. Hagemann, G. Heinzelmann, H. Kado, K. Kawagoe, C. KleinwortM. Kuhlen, A. Petersen, R. Ramcke, U. Schneekloth, G. Weber, K. Ambrus, S. Bethke, A. Dieckmann, E. Elsen, J. Heintze, K. H. Hellenbrand, S. Komamiya, J. Von Krogh, P. Lennert, H. Matsumura, H. Rieseberg, J. Spitzer, A. Wagner, C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, J. M. Nye, J. Allison, A. H. Ball, R. J. Barlow, J. Chrin, I. P. Duerdoth, T. Greenshaw, F. K. Loebinger, A. A. Macbeth, H. E. Mills, P. G. Murphy, K. Stephens, P. Warming, R. G. Glasser, P. Hill, J. A.J. Skard, S. R. Wagner, G. T. Zorn, S. L. Cartwright, D. Clarke, R. Marshall, R. P. Middleton, T. Kawamoto, T. Kobayashi, H. Takeda, T. Takeshita, S. Yamada

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Abstract

Total and differential cross sections for exclusive production of proton-antiproton pairs in photon-photon collisions have been measured using the JADE detector at PETRA. The total cross section in the CM angular |cos θ^*| < 0.6 reaches a maximum value of 3.8 nb for a γγ invariant mass of W_γγ = 2.25 GeV, and decreases rapidly for higher values of W_γγ. In the range 2.0 GeV < W_γγ < 2.6 GeV the angular distribution is not isotopic. The nucleons are preferentially emitted at large angles to the collision axis.

Original language	English
Pages (from-to)	350-356
Number of pages	7
Journal	Physics Letters B
Volume	174
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(86)91114-7
Publication status	Published - Jul 10 1986
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(86)91114-7

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Bartel, W., Becker, L., Cords, D., Felst, R., Haidt, D., Knies, G., Krehbiel, H., Laurikainen, P., Magnussen, N., Meinke, R., Naroska, B., Olsson, J., Schmidt, D., Steffen, P., Dietrich, G., Hagemann, J., Heinzelmann, G., Kado, H., Kawagoe, K., ... Yamada, S. (1986). Exclusive production of proton-antiproton pairs in photon-photon collisions. Physics Letters B, 174(3), 350-356. https://doi.org/10.1016/0370-2693(86)91114-7

Bartel, W, Becker, L, Cords, D, Felst, R, Haidt, D, Knies, G, Krehbiel, H, Laurikainen, P, Magnussen, N, Meinke, R, Naroska, B, Olsson, J, Schmidt, D, Steffen, P, Dietrich, G, Hagemann, J, Heinzelmann, G, Kado, H, Kawagoe, K, Kleinwort, C, Kuhlen, M, Petersen, A, Ramcke, R, Schneekloth, U, Weber, G, Ambrus, K, Bethke, S, Dieckmann, A, Elsen, E, Heintze, J, Hellenbrand, KH, Komamiya, S, Von Krogh, J, Lennert, P, Matsumura, H, Rieseberg, H, Spitzer, J, Wagner, A, Bowdery, CK, Finch, AJ, Foster, F, Hughes, G, Nye, JM, Allison, J, Ball, AH, Barlow, RJ, Chrin, J, Duerdoth, IP, Greenshaw, T, Loebinger, FK, Macbeth, AA, Mills, HE, Murphy, PG, Stephens, K, Warming, P, Glasser, RG, Hill, P, Skard, JAJ, Wagner, SR, Zorn, GT, Cartwright, SL, Clarke, D, Marshall, R, Middleton, RP, Kawamoto, T, Kobayashi, T, Takeda, H, Takeshita, T & Yamada, S 1986, 'Exclusive production of proton-antiproton pairs in photon-photon collisions', Physics Letters B, vol. 174, no. 3, pp. 350-356. https://doi.org/10.1016/0370-2693(86)91114-7

@article{f1d0e41f3c8f4213adf6c62bc76b4a70,

title = "Exclusive production of proton-antiproton pairs in photon-photon collisions",

abstract = "Total and differential cross sections for exclusive production of proton-antiproton pairs in photon-photon collisions have been measured using the JADE detector at PETRA. The total cross section in the CM angular |cos θ*| < 0.6 reaches a maximum value of 3.8 nb for a γγ invariant mass of Wγγ = 2.25 GeV, and decreases rapidly for higher values of Wγγ. In the range 2.0 GeV < Wγγ < 2.6 GeV the angular distribution is not isotopic. The nucleons are preferentially emitted at large angles to the collision axis.",

author = "W. Bartel and L. Becker and D. Cords and R. Felst and D. Haidt and G. Knies and H. Krehbiel and P. Laurikainen and N. Magnussen and R. Meinke and B. Naroska and J. Olsson and D. Schmidt and P. Steffen and G. Dietrich and J. Hagemann and G. Heinzelmann and H. Kado and K. Kawagoe and C. Kleinwort and M. Kuhlen and A. Petersen and R. Ramcke and U. Schneekloth and G. Weber and K. Ambrus and S. Bethke and A. Dieckmann and E. Elsen and J. Heintze and Hellenbrand, {K. H.} and S. Komamiya and {Von Krogh}, J. and P. Lennert and H. Matsumura and H. Rieseberg and J. Spitzer and A. Wagner and Bowdery, {C. K.} and Finch, {A. J.} and F. Foster and G. Hughes and Nye, {J. M.} and J. Allison and Ball, {A. H.} and Barlow, {R. J.} and J. Chrin and Duerdoth, {I. P.} and T. Greenshaw and Loebinger, {F. K.} and Macbeth, {A. A.} and Mills, {H. E.} and Murphy, {P. G.} and K. Stephens and P. Warming and Glasser, {R. G.} and P. Hill and Skard, {J. A.J.} and Wagner, {S. R.} and Zorn, {G. T.} and Cartwright, {S. L.} and D. Clarke and R. Marshall and Middleton, {R. P.} and T. Kawamoto and T. Kobayashi and H. Takeda and T. Takeshita and S. Yamada",

note = "Funding Information: We are indebted to the PETRA machine group and to the DESY Computer Center staff for their excellent support during the experiment and to all engineers and technicians of the collaborating institutions who have participated in the maintenance of the apparatus. Discussions with H. Kolanoski, who pointed out a normalization error, are gratefully acknowledged. This experiment was supported by the Bundesminis-terium ftir Forschung und Technologie, by the Ministry of Education, Science and Culture of Japan, by the UK Science and Engineering Research Council through the Rutherford Appleton Laboratory and by the US Department of Energy. The visiting groups at DESY wish to thank the DESY directorate for the hospitality extended to them.",

year = "1986",

month = jul,

day = "10",

doi = "10.1016/0370-2693(86)91114-7",

language = "English",

volume = "174",

pages = "350--356",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Exclusive production of proton-antiproton pairs in photon-photon collisions

AU - Bartel, W.

AU - Becker, L.

AU - Cords, D.

AU - Felst, R.

AU - Haidt, D.

AU - Knies, G.

AU - Krehbiel, H.

AU - Laurikainen, P.

AU - Magnussen, N.

AU - Meinke, R.

AU - Naroska, B.

AU - Olsson, J.

AU - Schmidt, D.

AU - Steffen, P.

AU - Dietrich, G.

AU - Hagemann, J.

AU - Heinzelmann, G.

AU - Kado, H.

AU - Kawagoe, K.

AU - Kleinwort, C.

AU - Kuhlen, M.

AU - Petersen, A.

AU - Ramcke, R.

AU - Schneekloth, U.

AU - Weber, G.

AU - Ambrus, K.

AU - Bethke, S.

AU - Dieckmann, A.

AU - Elsen, E.

AU - Heintze, J.

AU - Hellenbrand, K. H.

AU - Komamiya, S.

AU - Von Krogh, J.

AU - Lennert, P.

AU - Matsumura, H.

AU - Rieseberg, H.

AU - Spitzer, J.

AU - Wagner, A.

AU - Bowdery, C. K.

AU - Finch, A. J.

AU - Foster, F.

AU - Hughes, G.

AU - Nye, J. M.

AU - Allison, J.

AU - Ball, A. H.

AU - Barlow, R. J.

AU - Chrin, J.

AU - Duerdoth, I. P.

AU - Greenshaw, T.

AU - Loebinger, F. K.

AU - Macbeth, A. A.

AU - Mills, H. E.

AU - Murphy, P. G.

AU - Stephens, K.

AU - Warming, P.

AU - Glasser, R. G.

AU - Hill, P.

AU - Skard, J. A.J.

AU - Wagner, S. R.

AU - Zorn, G. T.

AU - Cartwright, S. L.

AU - Clarke, D.

AU - Marshall, R.

AU - Middleton, R. P.

AU - Kawamoto, T.

AU - Kobayashi, T.

AU - Takeda, H.

AU - Takeshita, T.

AU - Yamada, S.

N1 - Funding Information: We are indebted to the PETRA machine group and to the DESY Computer Center staff for their excellent support during the experiment and to all engineers and technicians of the collaborating institutions who have participated in the maintenance of the apparatus. Discussions with H. Kolanoski, who pointed out a normalization error, are gratefully acknowledged. This experiment was supported by the Bundesminis-terium ftir Forschung und Technologie, by the Ministry of Education, Science and Culture of Japan, by the UK Science and Engineering Research Council through the Rutherford Appleton Laboratory and by the US Department of Energy. The visiting groups at DESY wish to thank the DESY directorate for the hospitality extended to them.

PY - 1986/7/10

Y1 - 1986/7/10

N2 - Total and differential cross sections for exclusive production of proton-antiproton pairs in photon-photon collisions have been measured using the JADE detector at PETRA. The total cross section in the CM angular |cos θ*| < 0.6 reaches a maximum value of 3.8 nb for a γγ invariant mass of Wγγ = 2.25 GeV, and decreases rapidly for higher values of Wγγ. In the range 2.0 GeV < Wγγ < 2.6 GeV the angular distribution is not isotopic. The nucleons are preferentially emitted at large angles to the collision axis.

AB - Total and differential cross sections for exclusive production of proton-antiproton pairs in photon-photon collisions have been measured using the JADE detector at PETRA. The total cross section in the CM angular |cos θ*| < 0.6 reaches a maximum value of 3.8 nb for a γγ invariant mass of Wγγ = 2.25 GeV, and decreases rapidly for higher values of Wγγ. In the range 2.0 GeV < Wγγ < 2.6 GeV the angular distribution is not isotopic. The nucleons are preferentially emitted at large angles to the collision axis.

UR - http://www.scopus.com/inward/record.url?scp=0037477021&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037477021&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(86)91114-7

DO - 10.1016/0370-2693(86)91114-7

M3 - Article

AN - SCOPUS:0037477021

SN - 0370-2693

VL - 174

SP - 350

EP - 356

JO - Physics Letters B

JF - Physics Letters B

IS - 3

ER -

Exclusive production of proton-antiproton pairs in photon-photon collisions

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