Branching ratios for pbarp annihilation at rest into two-body final states

Measurements of two-body branching ratios for pbarp annihilations at rest in liquid and gaseous (12 rho sub S sub T sub P) hydrogen are reported. Channels studied are pbarp-> pi sup 0 pi sup 0 ,pi sup 0 eta, K sup 0 sub S K sup 0 sub L , K sup + K sup -. The branching ratio for the pi sup 0 pi su...

Descripción completa

Detalles Bibliográficos
Autores principales: Abele, A, Adomeit, J, Amsler, Claude, Baker, C A, Barnett, B M, Batty, C J, Benayoun, M, Bischoff, S, Blüm, P, Braune, K, Bugg, D V, Case, T, Crowe, K M, Degener, T, Doser, Michael, Dünnweber, W, Engelhardt, D, Faessler, M A, Giarritta, P, Haddock, R P, Heinsius, F H, Heinzelmann, M, Herbstrith, A, Herz, M, Hessey, N P, Hidas, P, Hodd, C, Holtzhaussen, C, Jamnik, D, Kalinowsky, H, Kammel, P, Kisiel, J, Klempt, E, Koch, H, Kunze, M, Kurilla, U, Lakata, M, Landua, Rolf, Matthäy, H, McCrady, R, Meier, J, Meyer, C A, Montanet, Lucien, Ouared, R, Peters, K, Pick, B, Ratajczak, M, Regenfus, C, Röthel, W, Spanier, S, Stöck, H, Strassburger, C, Strohbusch, U, Suffert, Martin, Suh, J S, Thoma, U, Tischhäuser, M, Uman, I, Völcker, C, Wallis-Plachner, S, Walther, D, Wiedner, U, Wittmack, K, Zou, B S
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(00)00361-4
http://cds.cern.ch/record/773257
Descripción
Sumario:Measurements of two-body branching ratios for pbarp annihilations at rest in liquid and gaseous (12 rho sub S sub T sub P) hydrogen are reported. Channels studied are pbarp-> pi sup 0 pi sup 0 ,pi sup 0 eta, K sup 0 sub S K sup 0 sub L , K sup + K sup -. The branching ratio for the pi sup 0 pi sup 0 channel in liquid H sub 2 is measured to be (6.14+-0.40)x10 sup - sup 4. The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002 rho sub S sub T sub P to liquid H sub 2 is determined. Values obtained include 0.11+-0.02 in liquid H sub 2 and 0.48+-0.04 in 12 rho sub S sub T sub P H sub 2 gas.

Ejemplares similares