학술논문
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging
Document Type
article
Author
Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, DN; Kerth, LT; Kolomensky, Yu G; Lee, MJ; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Khan, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Lankford, AJ; Dey, B; Gary, JW; Long, O; Sevilla, M Franco; Hong, TM; Kovalskyi, D; Richman, JD; West, CA; Eisner, AM; Lockman, WS; Vazquez, W Panduro; Schumm, BA; Seiden, A; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Kim, J; Miyashita, TS; Ongmongkolkul, P; Porter, FC; Röhrken, M; Andreassen, R; Huard, Z; Meadows, BT; Pushpawela, BG; Sokoloff, MD; Sun, L; Ford, WT; Gaz, A; Smith, JG; Wagner, SR; Ayad, R; Toki, WH; Spaan, B; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, IM; Piccolo, M; Zallo, A; Contri, R; Monge, MR; Passaggio, S; Patrignani, C; Robutti, E; Bhuyan, B; Prasad, V; Adametz, A; Uwer, U; Lacker, HM; Mallik, U; Chen, C; Cochran, J; Prell, S
Source
Physical Review D. 93(3)
Subject
Language
Abstract
We describe in detail a previously published measurement of CP violation in B0-B¯0 oscillations, based on an integrated luminosity of 425.7 fb-1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million B¯0→D∗+-ν¯ decays selected with partial reconstruction of the D∗+ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP=(N(B0B0)-N(B¯0B¯0))/(N(B0B0)+N(B¯0B¯0))=(0.06±0.17-0.32+0.38)% corresponding to ΔCP=1-|q/p|=(0.29±0.84-1.61+1.88)×10-3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.