A study of electron-muon pair production in 450 GeV/c pBe collisions

We report on the production of $e^{\pm}\mu^{\mp}$ pairs in 450 GeV/c pBe collisions at the CERN SPS. The $e\mu$ signal, which has average missing energy of 21~GeV, is shown to be consistent with expectations from charm decay, and implies a $\sigma\times B$ for $c\overline{c}$ production in p-nucleon...

Descripción completa

Detalles Bibliográficos
Autores principales: Åkesson, T, Almehed, S, Angelis, Aris L S, Antos, J, Atherton, Henry W, Aubry, P, Bartels, H W, Beaudoin, G, Beaulieu, J M, Beker, H, Benary, O, Bettoni, D, Bisi, V, Blevis, I, Bøggild, H, Cleland, W, Clemen, M, Collick, B, Corriveau, F, Dagan, S, Dederichs, K H, Depommier, P, Di Giacomo, Marco, Di Liberto, S, Dodd, J R, Dolgoshein, B A, Drees, A, Eidelman, S, Enyo, H, Erlandsson, B, Esten, M J, Fabjan, Christian Wolfgang, Fischer, P, Gaidot, A, Gibrat-Debu, F, Giubellino, P, Glässel, P, Goerlach, U, Golubkov, Yu A, Haglund, R F, Hamel, L A, van Hecke, H, Hedberg, V, Heifetz, R, Hölscher, A, Jacak, B V, Jarlskog, G, Johannson, S, Kraner, H W, Kroh, V, Lamarche, F, Leroy, C, Lissauer, D, London, G W, Lörstad, B, Lounis, A, Martelli, F, Marzari-Chiesa, A, Masera, M, Mazzoni, M A, Mazzucato, E, McCubbin, M L, McCubbin, N A, McGaughey, P L, Meddi, F, Mjörnmark, U, Muciaccia, M T, Muraviev, S, Murray, M, Neubert, M, Nevski, P, Nilsson, S, Olsen, L, Oren, Y, Pansart, J P, Park, Y M, Pfeiffer, A, Piuz, François, Polychronakos, V, Pomianowski, P A, Poulard, G, Price, M, Rahm, David Charles, Ramello, L, Riccati, L, Romano, G, Rosa, G, Sándor, L, Schükraft, Jürgen, Sekimoto, M, Seman, M, Shikonian, A, Shmeleva, A, Sidorov, V, Simone, S, Sirois, Y, Sletten, H, Smirnov, S, Sondheim, W E, Specht, H J, Stern, E, Stumer, I, Sumarokov, A L, Sunier, J W, Tcherniatine, V, Thompson, J, Tikhomirov, V, Valine, C M, Vanyashin, A V, Vasseur, G, Veenhof, R, Wigmans, R, Willis, W J, Yepes, P
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1007/s002880050262
http://cds.cern.ch/record/297791
Descripción
Sumario:We report on the production of $e^{\pm}\mu^{\mp}$ pairs in 450 GeV/c pBe collisions at the CERN SPS. The $e\mu$ signal, which has average missing energy of 21~GeV, is shown to be consistent with expectations from charm decay, and implies a $\sigma\times B$ for $c\overline{c}$ production in p-nucleon collisions of $0.63\pm 0.28 \mu b$. Alternatively, using an estimate of charm production from other experiments, the data imply a 95\% confidence level upper limit of 0.88$\mu b$ on any new physics process which produces $e^{\pm}\mu^{\mp}$.

Ejemplares similares