|
A study of electron-muon pair production in 450 GeV/c pBe collisions (1996) |
- 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
|
Abstract |
|
We report on the production of $e^{\pm}\mu^{\mp}$ pairs in $450\GeVc$ {\em 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 $çbar$ 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 \epmmump. |
Publication details |
|