1. A precision measurement of direct CP violation in the decay of neutral kaons into two pions
- Author
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J.R Batley, R.S Dosanjh, T.J Gershon, G.E Kalmus, C Lazzeroni, D.J Munday, E Olaiya, M Patel, M.A Parker, T.O White, S.A Wotton, R Arcidiacono, G Barr, G Bocquet, A Ceccucci, T Cuhadar-Dönszelmann, D Cundy, N Doble, V Falaleev, L Gatignon, A Gonidec, B Gorini, P Grafström, W Kubischta, I Mikulec, A Norton, S Palestini, B Panzer-Steindel, D Schinzel, H Wahl, C Cheshkov, P Hristov, V Kekelidze, D Madigojine, N Molokanova, Yu Potrebenikov, A Zinchenko, P Rubin, R Sacco, A Walker, D Bettoni, R Calabrese, P Dalpiaz, J Duclos, P.L Frabetti, A Gianoli, M Martini, L Masetti, F Petrucci, M Savrié, M Scarpa, A Bizzeti, M Calvetti, G Collazuol, E Iacopini, M Lenti, F Martelli, G Ruggiero, M Veltri, D Coward, M Eppard, A Hirstius, K Holtz, K Kleinknecht, U Koch, L Köpke, P Lopes da Silva, P Marouelli, I Mestvirishvili, C Morales, I Pellmann, A Peters, B Renk, S.A Schmidt, V Schönharting, R Wanke, A Winhart, J.C Chollet, L Fayard, G Graziani, L Iconomidou-Fayard, G Unal, I Wingerter-Seez, G Anzivino, P Cenci, E Imbergamo, G Lamanna, P Lubrano, A Mestvirishvili, A Nappi, M Pepe, M Piccini, M Valdata-Nappi, R Casali, C Cerri, M Cirilli, F Costantini, R Fantechi, L Fiorini, S Giudici, I Mannelli, G Pierazzini, M Sozzi, J.B Cheze, M De Beer, P Debu, F Derue, A Formica, G Gouge, G Marel, E Mazzucato, B Peyaud, R Turlay, B Vallage, M Holder, A Maier, M Ziolkowski, C Biino, N Cartiglia, M Clemencic, F Marchetto, E Menichetti, N Pastrone, J Nassalski, E Rondio, W Wislicki, S Wronka, H Dibon, M Jeitler, M Markytan, G Neuhofer, M Pernicka, A Taurok, L Widhalm, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), NA48, and Kerec, Hélène
- Subjects
neutral kaon ,Nuclear and High Energy Physics ,Particle physics ,[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,PREDICTION ,direct CP violation ,STANDARD MODEL ,FOS: Physical sciences ,neutral kaons ,CP violation ,epsilon'/epsilon parameter ,mesoni K ,decadimenti ,violazione dretta dii CP ,K meson ,decay ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,Pion ,0103 physical sciences ,EPSILON'/EPSILON ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,MESON SYSTEM ,CRYSTAL ,010306 general physics ,Physics ,kaon decay ,Large Hadron Collider ,010308 nuclear & particles physics ,NA48 experiment ,Yield (chemistry) ,High Energy Physics::Experiment ,Particle Physics - Experiment - Abstract
The direct CP violation parameter Re(epsilon'/epsilon) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. The 2001 running period was devoted to collecting additional data under varied conditions compared to earlier years (1997-99). The new data yield the result: Re(epsilon'/epsilon) = (13.7 +/- 3.1) times 10^{-4}. Combining this result with that published from the 1997, 98 and 99 data, an overall value of Re(epsilon'/epsilon) = (14.7 +/- 2.2) times 10^{-4} is obtained from the NA48 experiment., Comment: 19 pages, 5 figures, to be published in Physics Letters B
- Published
- 2002