Measurement ofCP-violation asymmetries inD0→KS0π+π−

T Aaltonen,G Pauletta,C M Ginsburg,A Mitra,M J Kim,J A Appel,A Rahaman,A Loginov,K Matera,A Bhatti,L Santi,H Miyake,Q Liu,D Torretta,M Vidal,A T Laasanen,R L Wagner,S Errede,Y Takeuchi,D Mietlicki,A Mukherjee,A Boveia,V Papadimitriou,M Hussein,D Tonelli,S Amerio,M Shimojima,S Rolli,S Donati,F D Snider,D Lucchesi,S R Hahn,E E Schmidt,D J Kong,S Wolbers,R Madrak,P Sinervo,W Ketchum,S Leo,J Budagov,M Iori,H Wolfe,P Schlabach,T Miao,V Ramakrishnan,J C Yun,A T Goshaw,D O Litvintsev,I Shreyber-Tecker,D Toback,S Behari,A B Wicklund,G L Strycker,E James,R Culbertson,A Pranko,H Gerberich,G Manca,L Ortolan,C S Moon,V Rusu,G Volpi,Y Zeng,N Goldschmidt,J Asaadi,V Saveliev,F Azfar,K Ebina,E Wicklund,M Lancaster,I Bizjak,D Goldin,A Di Canto,E Gerchtein,M Stancari,J Conway,D Amidei,T Wright,J Naganoma,H H Williams,P Lukens,A Napier,H S Budd,T J Phillips,A Ruiz,L Pondrom,P K Teng,G B Yu,M Rescigno,P Squillacioti,J Lueck,M Kurata,B Di Ruzza,A Artikov,T Yang,D Chokheli,R Roser,M Hurwitz,K Tollefson,S Pagan Griso,N Ranjan,R Forrest,F Vázquez,T R Junk,G P Yeh,M J Morello,T Riddick,M Datta,T Tomura,A Semenov,S Lami,Y D Oh,A Hamaguchi,F Rimondi,O Norniella,Y Seiya,T Bae,P Garosi,G Flanagan,J Yoh,S H Oh,C A Cox,T Wakisaka,R Vilar,K Takemasa,E Lee,A Golossanov,I Oksuzian,T Kuhr,A Aurisano,U K Yang,M Jones,K Gibson,G Lungu,B A Barnett,J Keung,A Anastassov,K Potamianos,K K Joo,K S Mcfarland,E J Jeon,F Ruffini,M Mussini,M Franklin,J Vizán,C Plager,P Mcintyre,G Punzi,P F Shepard,R St Denis,F Wick,J Patrick,N Moggi,G Velev,A Mazzacane,P Movilla Fernandez,S Carrillo,L Brigliadori,S Poprocki,K R Bland,S Zucchelli,D Cauz,T Rodriguez,C Bromberg,C Neu,G Giurgiu,W H Chung,S Lockwitz,Y Sakurai,B Auerbach,W K Sakumoto,F Happacher,M Feindt,B Carls,D Glenzinski,J Huston,S Carron,S H Kim,M Corbo,P Murat,L Demortier,Y Funakoshi,D Yamato,M E Mattson,M Campbell,M Cordelli,A Manousakis-Katsikakis,R Mcnulty,J Morlock,M Tecchio,K Goulianos,W C Wester,A Bodek,M Heck,N Ershaidat,P E Karchin,C Calancha,M Hare,D Dagenhart,S Klimenko,Y S Chung,P Wilson,D Stentz,G Compostella,S Uozumi,G Piacentino,W Badgett,C Grosso-Pilcher,E Thomson,F Ptohos,J D Lewis,P Giromini,Y Kato,J Thome,D J Cox,D Krop,T Okusawa,B Jayatilaka,E Palencia,N Hussain,F Devoto,S Kwang,O González,S Torre,P Totaro,K Kondo,J Boudreau,Y Sudo,G Busetto,M Lindgren,B Álvarez González,F Canelli,C Pagliarone,V Khotilovich,A Varganov,J Lys,A Eppig,G Introzzi,S Y Jun,J Nett,G Chlachidze,L Nodulman,S Y Noh,M Gold,P Catastini,C Vellidis,P Mazzanti,W Ashmanskas,R Orava,K Sliwa,M Dorigo,N Giokaris,A Scribano,A Elagin,P De Barbaro,D Waters,C Marino,A Savoy-Navarro,M Vogel,H Song,G A Thompson,И Суслов ,F Sforza,J P Fernández ,F Prokoshin,H Liu,F Chlebana,P Bussey,P Bartoš ,E Pianori,S W Lee,А Симоненко ,А Суханов ,L Oakes,R D Field ,J Russ,S Camarda,A Calamba,F Scuri,J S Lee,A Zanetti,D Jang,D H Kim,M C Kruse ,V Glagolev,P Barria,B L Winer,B Kilminster,M N Mondragón ,A Castro,A Ivanov,S Grinstein,M Martı́nez ,L Scodellaro,A Safonov,I Vila,S Jindariani,O Stelzer-Chilton,P Wittich,K Cho,A Limosani,M S Neubauer,S Malik,M Dell’Orso,S Shalhout ,M J Shochet ,S Leone,M Cavalli‐Sforza ,E Halkiadakis,H S Kim,P Giannetti,J Strologas,T Dorigo,J Nielsen,J Tang,Thomas Schwarz ,S C Seidel ,J Nachtman,M E Convery,V Sorı́n ,P Mehtälä ,B Casal,A F Garfinkel,F Crescioli,Y C Chen,M Kreps,J Guimarães Da Costa ,I K Furic ,M Bauce,T Yoshida,T Rodrigo,R Erbacher,Y Yang ,A Lister,T Arisawa,D Hare,A Mehta,G Gómez-Ceballos ,J Bellinger,G Gómez ,E Rogers,T Lecompte,Th Müller ,A Annovi,M Kirby,J Dittmann ,R Eusebi,B Blumenfeld,M Campanelli,F Bedeschi,W H Hopkins ,A Höcker ,M Paulini,F Margaroli,N D’Ascenzo,K Lannon,J Freeman ,V Krutelyov,S Hewamanage,T Liu,C Liu,B Stelzer,L Ristori,K Maeshima,E Lipeles,Y Nagai,J Königsberg ,M Deninno,D Pellett ,K Yamamoto,J E Kim,A Paramonov ,P Dong,R Carosi,J Kroll,D Bisello,K Hatakeyama,J Heinrich,K Pitts,I Nakano,P Renton,D Whiteson,K Hara,A Penzo,M A Ciocci,A Beretvas,R Lysák ,V Giakoumopoulou,A Robson,Y J Kim,S M Wang,M Goncharov,I Gorelov,H S Lee,R Harr ,A Barbaro‐Galtieri ,K Sato,J Thom,G Chiarelli,S Hou,S Moêd ,K Yi,D Carlsmith,C Zhou,M Chertok,D Benjamin,X Wu,V Cavaliere,K Burkett,E Brücken ,M Casarsa,A Bocci,A Buzatu,P Mastrandrea,C J Lin ,Z Wu,J Cuevas,M D’Errico,C Paus,L Cerrito,A Kotwal ,I Yu,M D’Onofrio,J Pilot,A Clark,T Shears,S B Kim,P Wagner,David Horn ,A Kasmi,A Lath,K Yorita,J Han ,P Maestro,M Gallinaro,J R Smith,G Apollinari,R Lander ,S Tokár ,M J Frank,G Bellettini,A Warburton,W-M Yao ,P Lujan,J S Wilson,K J Knoepfel ,T Kamon,J Antos̆ ,S M Farrington ,C Clarke,R Moore,R Wallny,A Soha,S Wilbur,R Hughes ,F Ukegawa,U Husemann,D Bortoletto,A Cerri,Y K Kim,V E Barnes,N Kimura,G Latino,S Giagu,M Herndon,C P Hays ,J E Garcia,M Trovato,C Mesropian,A Schmidt,S S Yu,S Lammel,I Redondo

doi:10.1103/physrevd.86.032007

Abstract

We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D0→KS0π+π− using CDF II data corresponding to 6.0 fb−1 of integrated luminosity from Tevatron pp¯ collisions at s=1.96 TeV. The charm mesons used in this analysis come from D*+(2010)→D0π+ and D*−(2010)→D¯0π−, where the production flavor of the charm meson is determined by the charge of the accompanying pion. We apply a Dalitz-amplitude analysis for the description of the dynamic decay structure and use two complementary approaches, namely, a full Dalitz-plot fit employing the isobar model for the contributing resonances and a model-independent bin-by-bin comparison of the D0 and D¯0 Dalitz plots. We find no CP-violation effects and measure an asymmetry of ACP=(−0.05±0.57(stat)±0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction.Received 5 July 2012DOI:https://doi.org/10.1103/PhysRevD.86.032007© 2012 American Physical Society

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