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Pregled bibliografske jedinice broj: 42086

Search for eV (pseudo)scalar penetrating particles in the SPS neutrino beam


Astier, P.; Autiero, D.; Baldisseri, A.; Baldo-Ceolin, M.; Ballocchi, G.; Banner, M.; Bassompierre, G.; Benslama, K.; Besson, N.; Bird, I. et al.
Search for eV (pseudo)scalar penetrating particles in the SPS neutrino beam // Physics letters B, 479 (2000), 4; 371-380 (međunarodna recenzija, članak, znanstveni)


Naslov
Search for eV (pseudo)scalar penetrating particles in the SPS neutrino beam

Autori
Astier, P. ; Autiero, D. ; Baldisseri, A. ; Baldo-Ceolin, M. ; Ballocchi, G. ; Banner, M. ; Bassompierre, G. ; Benslama, K. ; Besson, N. ; Bird, I. ; Blumenfeld, B. ; Bobisut, F. ; Bouchez, J. ; Boyd, S. ; Bueno, A. ; Bunyatov, S. ; Camilleri, L. ; Cardini, A. ; Cattaneo, P.W. ; Cavasinni, V. ; Cervera-Villanueva, A. ; Chukanov, A. ; Collazuol, G. ; Conforto, G. ; Conta, C. ; Contalbrigo, M. ; Cousins, R. ; Daniels, D. ; Degaudenzi, H. ; Del Prete, T. ; De Santo, A. ; Dignan, T. ; Di Lella, L. ; do Couto e Silva, E. ; Dumarchez, J. ; Ellis, M. ; Feldman, G.J. ; Ferrari, R. ; Ferrere, D. ; Flaminio, V. ; Fraternali, M. ; Gaillard, J.M. ; Gangler, E. ; Geiser, A. ; Geppert, D. ; Gibin, D. ; Gninenko, S. ; Godley, A. ; Gomez-Cadenas, J.J. ; Gosset, J. ; Goessling, C. ; Gouanere, M. ; Grant, A. ; Graziani, G. ; Guglielmi, A. ; Hagner, C. ; Hernando, J. ; Hubbard, D. ; Hurst, P. ; Hyett, N. ; Iacopini, E. ; Joseph, C. ; Juget, F. ; Kirsanov, M.M. ; Klimov, O. ; Kokkonen, J. ; Kovzelev, A. ; Krasnikov, N.V. ; Krasnoperov, A. ; Kuznetsov, V.E. ; Lacaprara, S. ; Lakić, Biljana ; Lanza, A. ; La Rotonda, L. ; Laveder, M. ; C. ; Letessier-Selvon, A. ; Levy, J.M. ; Linssen, L. ; Ljubičić, Ante ; Long, J. ; Lupi, A. ; Marchionni, A. ; Martelli, F. ; Mechain, X. ; Mendiburu, J.-P. ; Meyer, J.P. ; Mezzetto, M. ; Mishra, S.R. ; Moorhead, G.F. ; Naumov, D. ; Nedelec, P. ; Nefedov, Yu. ; Nguyen-Mau, C. ; Orestano, D. ; Pastore, F. ; Peak, L.S. ; Pennacchio, E. ; Pessard, H. ; Petti, R. ; Placci, A. ; Polesello, G. ; Pollmann, D. ; Polyarush, P. ; Popov, B. ; Poulsen, C. ; Rebuffi, L. ; Rico, J. ; Riemann, P. ; Roda, C. ; Rubbia, A. ; Salvatore, F. ; Schahmaneche, K. ; Schmidt, B. ; Sevior, M. ; Sillou, D. ; Soler, F.J.P. ; Sozzi, G. ; Steele, D. ; Stiegler, U. ; Stipčević, Mario ; Stolarczyk, T. ; Tareb-Reyes, M. ; Taylor, G.N. ; Tereschenko, V. ; Toropin, A. ; Touchard, A.-M. ; Tovey, S.N. ; Tran, M.-T. ; Tsesmelis, E. ; Ulrichs, J. ; Vacavant, L. ; Valdata-Nappi, M. ; Valuev, V. ; Vannucci, F. ; Varvell, K.E. ; Veltri, M. ; Vercesi, V. ; Vieira, J.-M. ; Vinogradova, T. ; Weber, F.V. ; Weisse, T. ; Wilson, F.F. ; Winton, L.J. ; Yabsley, B.D. ; Zaccone, H. ; Zioutas, K. ; Zuber, K. ; Zuccon, P.

Izvornik
Physics letters B (0370-2693) 479 (2000), 4; 371-380

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Light(pseudo)scalars; photon-regeneration

Sažetak
We carried out a model-independent search for light scalar or pseudoscalar particles a's (an example of which is the axion) that couple to two photons by using a photon-regeneration method at high energies allowing a substantial increase in the sensitivity to eV masses. The experimental set-up is based on elements of the CERN West Area Neutrino Facility (WANF) beam line and the NOMAD neutrino detector. The new particles, if they exist, could be produced through the Primakoff effect in interactions of high energy photons, generated by the 450 GeV protons in the CERN SPS neutrino target, with virtual photons from the WANF horn magnetic field. The particles would penetrate the downstream shielding and would be observed in the NOMAD neutrino detector through their re-conversion into real high energy photons by interacting with the virtual photons from the magnetic field of the NOMAD dipole magnet. From the analysis of the data collected during the 1996 run with 1.08×1019 protons on target, 312 candidate events with energy between 5 and 140 GeV were found. This number is in general agreement with the expectation of 272ą18 background events from standard neutrino processes. A 90 %CL upper limit on the a-coupling ga<1.5×104GeV1 for a masses up to 40 eV is obtained.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00980204

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus