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Phys Rev Lett. 2005 Apr 1;94(12):122001. Epub 2005 Apr 1.

Measurement of partial widths and search for direct CP violation in D0 meson decays to K-K+ and pi-pi+.

Acosta D, Affolder T, Akimoto T, Albrow MG, Ambrose D, Amerio S, Amidei D, Anastassov A, Anikeev K, Annovi A, Antos J, Aoki M, Apollinari G, Arisawa T, Arguin JF, Artikov A, Ashmanskas W, Attal A, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Badgett W, Barbaro-Galtieri A, Barker GJ, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Behari S, Belforte S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Bocci A, Bodek A, Bolla G, Bolshov A, Booth PS, Bortoletto D, Boudreau J, Bourov S, Bromberg C, Brubaker E, Budagov J, Budd HS, Burkett K, Busetto G, Bussey P, Byrum KL, Cabrera S, Calafiura P, Campanelli M, Campbell M, Canepa A, Casarsa M, Carlsmith D, Carron S, Carosi R, Cavalli-Sforza M, Castro A, Catastini P, Cauz D, Cerri A, Cerri C, Cerrito L, Chapman J, Chen C, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho I, Cho K, Chokheli D, Chu ML, Chuang S, Chung JY, Chung WH, Chung YS, Ciobanu CI, Ciocci MA, Clark AG, Clark D, Coca M, Connolly A, Convery M, Conway J, Cooper B, Cordelli M, Cortiana G, Cranshaw J, Cuevas J, Culbertson R, Currat C, Cyr D, Dagenhart D, Da Ronco S, D'Auria S, de Barbaro P, De Cecco S, De Lentdecker G, Dell'agnello S, Dell'orso M, Demers S, Demortier L, Deninno M, De Pedis D, Derwent PF, Dionisi C, Dittmann JR, Doksus P, Dominguez A, Donati S, Donega M, Donini J, D'Onofrio M, Dorigo T, Drollinger V, Ebina K, Eddy N, Ely R, Erbacher R, Erdmann M, Errede D, Errede S, Eusebi R, Fang HC, Farrington S, Fedorko I, Feild RG, Feindt M, Fernandez JP, Ferretti C, Field RD, Fiori I, Flanagan G, Flaugher B, Flores-Castillo LR, Foland A, Forrester S, Foster GW, Franklin M, Freeman J, Frisch H, Fujii Y, Furic I, Gajjar A, Gallas A, Galyardt J, Gallinaro M, Garcia-Sciveres M, Garfinkel AF, Gay C, Gerberich H, Gerdes DW, Gerchtein E, Giagu S, Giannetti P, Gibson A, Gibson K, Ginsburg C, Giolo K, Giordani M, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldschmidt N, Goldstein D, Goldstein J, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Gresele A, Griffiths M, Grosso-Pilcher C, Guenther M, Guimaraes da Costa J, Haber C, Hahn K, Hahn SR, Halkiadakis E, Handler R, Happacher F, Hara K, Hare M, Harr RF, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Hays C, Hayward H, Heider E, Heinemann B, Heinrich J, Hennecke M, Herndon M, Hill C, Hirschbuehl D, Hocker A, Hoffman KD, Holloway A, Hou S, Houlden MA, Huffman BT, Huang Y, Hughes RE, Huston J, Ikado K, Incandela J, Introzzi G, Iori M, Ishizawa Y, Issever C, Ivanov A, Iwata Y, Iyutin B, James E, Jang D, Jarrell J, Jeans D, Jensen H, Jeon EJ, Jones M, Joo KK, Jun S, Junk T, Kamon T, Kang J, Karagoz Unel M, Karchin PE, Kartal S, Kato Y, Kemp Y, Kephart R, Kerzel U, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim JE, Kim MJ, Kim MS, Kim SB, Kim SH, Kim TH, Kim YK, King BT, Kirby M, Kirsch L, Klimenko S, Knuteson B, Ko BR, Kobayashi H, Koehn P, Kong DJ, Kondo K, Konigsberg J, Kordas K, Korn A, Korytov A, Kotelnikov K, Kotwal AV, Kovalev A, Kraus J, Kravchenko I, Kreymer A, Kroll J, Kruse M, Krutelyov V, Kuhlmann SE, Kuznetsova N, Laasanen AT, Lai S, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lannon K, Lath A, Latino G, Lauhakangas R, Lazzizzera I, Le Y, Lecci C, Lecompte T, Lee J, Lee J, Lee SW, Leonardo N, Leone S, Lewis JD, Li K, Lin C, Lin CS, Lindgren M, Liss TM, Litvintsev DO, Liu T, Liu Y, Lockyer NS, Loginov A, Loreti M, Loverre P, Lu RS, Lucchesi D, Lujan P, Lukens P, Lyons L, Lys J, Lysak R, Macqueen D, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Manca G, Marginean R, Martin M, Martin A, Martin V, Martínez M, Maruyama T, Matsunaga H, Mattson M, Mazzanti P, McFarland KS, McGivern D, McIntyre PM, McNamara P, Ncnulty R, Menzemer S, Menzione A, Merkel P, Mesropian C, Messina A, Miao T, Miladinovic N, Miller L, Miller R, Miller JS, Miquel R, Miscetti S, Mitselmakher G, Miyamoto A, Miyazaki Y, Moggi N, Mohr B, Moore R, Morello M, Mukherjee A, Mulhearn M, Muller T, Mumford R, Munar A, Murat P, Nachtman J, Nahn S, Nakamura I, Nakano I, Napier A, Napora R, Naumov D, Necula V, Niell F, Nielsen J, Nelson C, Nelson T, Neu C, Neubauer MS, Newman-Holmes C, Nicollerat AS, Nigmanov T, Nodulman L, Norniella O, Oesterberg K, Ogawa T, Oh SH, Oh YD, Ohsugi T, Okusawa T, Oldeman R, Orava R, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Pashapour S, Patrick J, Pauletta G, Paulini M, Pauly T, Paus C, Pellett D, Penzo A, Phillips TJ, Piacentino G, Piedra J, Pitts KT, Plager C, Pompos A, Pondrom L, Pope G, Poukhov O, Prakoshyn F, Pratt T, Pronko A, Proudfoot J, Ptohos F, Punzi G, Rademacker J, Rakitine A, Rappoccio S, Ratnikov F, Ray H, Reichold A, Reisert B, Rekovic V, Renton P, Rescigno M, Rimondi F, Rinnert K, Ristori L, Robertson WJ, Robson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Rott C, Russ J, Ruiz A, Ryan D, Saarikko H, Safonov A, St Denis R, Sakumoto WK, Salamanna G, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sarkar S, Sato K, Savard P, Savoy-Navarro A, Schemitz P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scribano A, Scuri F, Sedov A, Seidel S, Seiya Y, Semeria F, Sexton-Kennedy L, Sfiligoi I, Shapiro MD, Shears T, Shepard PF, Shimojima M, Shochet M, Shon Y, Shreyber I, Sidoti A, Siegrist J, Siket M, Sill A, Sinervo P, Sisakyan A, Skiba A, Slaughter AJ, Sliwa K, Smirnov D, Smith JR, Snider FD, Snihur R, Somalwar SV, Spalding J, Spezziga M, Spiegel L, Spinella F, Spiropulu M, Squillacioti P, Stadie H, Stefanini A, Stelzer B, Stelzer-Chilton O, Strologas J, Stuart D, Sukhanov A, Sumorok K, Sun H, Suzuki T, Taffard A, Tafirout R, Takach SF, Takano H, Takashima R, Takeuchi Y, Takikawa K, Tanaka M, Tanaka R, Tanimoto N, Tapprogge S, Tecchio M, Teng PK, Terashi K, Tesarek RJ, Tether S, Thom J, Thompson AS, Thomson E, Tipton P, Tiwari V, Tkaczyk S, Toback D, Tollefson K, Tomura T, Tonelli D, Tönnesmann M, 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Abstract

We present a measurement of relative partial widths and decay rate CP asymmetries in K-K+ and pi(-)pi(+) decays of D0 mesons produced in pp collisions at sqrt[s]=1.96 TeV. We use a sample of 2x10(5) D(*+)-->D0pi(+) (and charge conjugate) decays with the D0 decaying to K-pi(+), K-K+, and pi(-)pi(+), corresponding to 123 pb(-1) of data collected by the Collider Detector at Fermilab II experiment at the Fermilab Tevatron collider. No significant direct CP violation is observed. We measure Gamma(D0-->K-K+)/Gamma(D0-->K-pi(+))=0.0992+/-0.0011+/-0.0012, Gamma(D0-->pi(-)pi(+))/Gamma(D0-->K-pi(+))=0.035 94+/-0.000 54+/-0.000 40, A(CP)(K-K+)=(2.0+/-1.2+/-0.6)%, and A(CP)(pi(-)pi(+))=(1.0+/-1.3+/-0.6)%, where, in all cases, the first uncertainty is statistical and the second is systematic.

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