1. LIMITS ON THE MASS OF LIGHT (PSEUDO)SCALAR PARTICLES FROM BETHE-HEITLER e+e− and μ+μ− PAIR PRODUCTION IN A PROTON-IRON BEAM DUMP EXPERIMENT
- Author
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O.Y. Denisov, V.V. Lipajev, Yu. Salomatin, S.A. Bunyatov, O.M. Kuznetsov, V.P. Obudovski, Y.A. Zudin, V.V. Sytnik, G.L. Chukin, V.B. Anykeyev, A.S. Kozhin, M. Walter, S. N. Prakhov, O.L. Klimov, A. Karev, Evgueni Ladygin, C. Rethfeldt, V.I. Kravtsov, A.P. Bugorsky, S.A. Baranov, R.M. Fakhrutdinov, V.A. Tumakov, P.V. Mojsenz, V.N. Rychenkov, V.N. Goryachev, A.A. Spiridonov, H.E. Ryseck, A.N. Sytin, V.I. Snyatkov, A.S. Vovenko, H. J. Grabosch, S.K. Chernishenko, V.A. Senko, P. Lanius, V.P. Zhigunov, D. Kiss, M.Y. Kasarinov, A.V. Kulikov, Yu. M. Sapunov, Jürgen Brunner, A.I. Mukhin, N.A. Galjaev, N.S. Bamburov, L.S. Barabash, M.M. Kirsanov, Johannes Blümlein, S.A. Mukhin, Z. Jaki, N.I. Bozhko, K.E. Shestermanov, S. Nowak, N.V. Gorbunov, Yu.A. Batusov, V.V. Lyukov, and A.A. Borisov
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Astronomy and Astrophysics ,Elementary particle ,Supersymmetry ,Atomic and Molecular Physics, and Optics ,law.invention ,Nuclear physics ,Pseudoscalar ,Pair production ,law ,Higgs boson ,Grand Unified Theory ,Beam dump ,Quantum field theory - Abstract
A search has been performed for weakly interacting neutral light scalar and pseudoscalar particles in a proton-iron beam dump experiment via the Bethe-Heitler process. No positive signal was observed. Limits are derived on the masses of these particles in the framework of the Standard Model and its minimal supersymmetric extension (MSSM) comparing the experimental results with expectations for Bethe-Heitler e+e− and μ+μ− pair production. The Higgs particle of the SU2L×U1 Standard Theory is excluded for masses in the range mH
- Published
- 1992