Evidence for D-0-(D)over-bar(0) mixing

Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, Jp; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Tico, Jg; Grauges, E; Lopez, L; Palano, A; Eigen, G; Stugu, B; Sun, L; Abrams, Gs; Battaglia, M; Brown, Dn; Button-Shafer, J; Cahn, Rn; Groysman, Y; Jacobsen, Rg; Kadyk, Ja; Kerth, Lt; Kolomensky, Yg; Kukartsev, G; Pegna, Dl; Lynch, G; Mir, Lm; Orimoto, Tj; Ronan, Mt; Tackmann, K; Wenzel, Wa; Sanchez, Pda; Hawkes, Cm; Watson, At; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Schroeder, T; Steinke, M; Walker, D; Asgeirsson, Dj; Cuhadar-Donszelmann, T; Fulsom, Bg; Hearty, C; Knecht, Ns; Mattison, Ts; McKenna, Ja; Khan, A; Saleem, M; Teodorescu, L; Blinov, Ve; Bukin, Ad; Druzhinin, Vp; Golubev, Vb; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Solodov, Ep; Todyshev, Ky; Bondioli, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, Aj; Lund, P; Mandelkern, M; Martin, Ec; Stoker, Dp; Abachi, S; Buchanan, C; Foulkes, Sd; Gary, Jw; Liu, F; Long, O; Shen, Bc; Zhang, L; Paar, Hp; Rahatlou, S; Sharma, V; 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doi:10.1103/PhysRevLett.98.211802

We present evidence for D-0-(D) over bar (0) mixing in D-0 -> K+pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22 +/- 0.30(stat)+/- 0.21(syst)]x10(-3) and y(')=[9.7 +/- 4.4(stat)+/- 3.1(syst)]x10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R-D, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303 +/- 0.016(stat)+/- 0.010(syst)]%. We find no evidence for CP violation.

Titolo:	Evidence for D-0-(D)over-bar(0) mixing
Autori:	Aubert B Bona M Boutigny D Karyotakis Y Lees JP Poireau V Prudent X Tisserand V Zghiche A Tico JG Grauges E Lopez L Palano A Eigen G Stugu B Sun L Abrams GS Battaglia M Brown DN Button-Shafer J Cahn RN Groysman Y Jacobsen RG Kadyk JA Kerth LT Kolomensky YG Kukartsev G Pegna DL Lynch G Mir LM Orimoto TJ Ronan MT Tackmann K Wenzel WA Sanchez PDA Hawkes CM Watson AT Held T Koch H Lewandowski B Pelizaeus M Schroeder T Steinke M Walker D Asgeirsson DJ Cuhadar-Donszelmann T Fulsom BG Hearty C Knecht NS Mattison TS McKenna JA Khan A Saleem M Teodorescu L Blinov VE Bukin AD Druzhinin VP Golubev VB Onuchin AP Serednyakov SI Skovpen YI Solodov EP Todyshev KY Bondioli M Curry S Eschrich I Kirkby D Lankford AJ Lund P Mandelkern M Martin EC Stoker DP Abachi S Buchanan C Foulkes SD Gary JW Liu F Long O Shen BC Zhang L Paar HP Rahatlou S Sharma V Berryhill JW Campagnari C Cunha A Dahmes B Hong TM Kovalskyi D Richman JD Beck TW Eisner AM Flacco CJ Heusch CA Kroseberg J Lockman WS Schalk T Schumm BA Seiden A Williams DC Wilson MG Winstrom LO Chen E Cheng CH Fang F Hitlin DG Narsky I Piatenko T Porter FC Mancinelli G Meadows BT Mishra K Sokoloff MD Blanc F Bloom PC Chen S Ford WT Hirschauer JF Kreisel A Nagel M Nauenberg U Olivas A Smith JG Ulmer KA Wagner SR Zhang J Gabareen AM Soffer A Toki WH Wilson RJ Winklmeier F Zeng Q Altenburg DD Feltresi E Hauke A Jasper H Merkel J Petzold A Spaan B Wacker K Brandt T Klose V Kobel MJ Lacker HM Mader WF Nogowski R Schubert J Schubert KR Schwierz R Sundermann JE Volk A Bernard D Bonneaud GR Latour E Lombardo V Thiebaux C Verderi M Clark PJ Gradl W Muheim F Playfer S Robertson AI Xie Y Andreotti M Bettoni D Bozzi C Calabrese R Cecchi A Cibinetto G Franchini P Luppi E Negrini M Petrella A Piemontese L Prencipe E Santoro V Anulli F Baldini-Ferroli R Calcaterra A de Sangro R Finocchiaro G Pacetti S Patteri P Peruzzi IM Piccolo M Rama M Zallo A Buzzo A Contri R Lo Vetere M Macri MM Monge MR Passaggio S Patrignani C Robutti E Santroni A Tosi S Chaisanguanthum KS Morii M Wu J Dubitzky RS Marks J Schenk S Uwer U Bard DJ Dauncey PD Flack RL Nash JA Nikolich MB Vazquez WP Behera PK Chai X Charles MJ Mallik U Meyer NT Ziegler V Cochran J Crawley HB Dong L Eyges V Meyer WT Prell S Rosenberg EI Rubin AE Gritsan AV Guo ZJ Lae CK Denig AG Fritsch M Schott G Arnaud N Bequilleux J Davier M Grosdidier G Hocker A Lepeltier V Le Diberder F Lutz AM Pruvot S Rodier S Roudeau P Schune MH Serrano J Sordini V Stocchi A Wang WF Wormser G Lange DJ Wright DM Chavez CA Forster IJ Fry JR Gabathuler E Gamet R Hutchcroft DE Payne DJ Schofield KC Touramanis C Bevan AJ George KA Di Lodovico F Menges W Sacco R Cowan G Flaecher HU Hopkins DA Jackson PS McMahon TR Salvatore F Wren AC Brown DN Davis CL Allison J Barlow NR Barlow RJ Chia YM Edgar CL Lafferty GD West TJ Yi JI Anderson J Chen C Jawahery A Roberts DA Simi G Tuggle JM Blaylock G Dallapiccola C Hertzbach SS Li X Moore TB Salvati E Saremi S Cowan R Fisher PH Sciolla G Sekula SJ Spitznagel M Taylor F Yamamoto RK Mclachlin SE Patel PM Robertson SH Lazzaro A Palombo F Bauer JM Cremaldi L Eschenburg V Godang R Kroeger R Sanders DA Summers DJ Zhao HW Brunet S Cote D Simard M Taras P Viaud FB Nicholson H De Nardo G Fabozzi F Lista L Monorchio D Sciacca C Baak MA Raven G Snoek HL Jessop CP LoSecco JM Benelli G Corwin LA Gan KK Honscheid K Hufnagel D Kagan H Kass R Morris JP Rahimi AM Regensburger JJ Ter-Antonyan R Wong QK Blount NL Brau J Frey R Igonkina O Kolb JA Lu M Rahmat R Sinev NB Strom D Strube J Torrence E Gagliardi N Gaz A Margoni M Morandin M Pompili A Posocco M Rotondo M Simonetto F Stroili R Voci C Ben-Haim E Briand H Calderini G Chauveau J David P Del Buono L de la Vaissiere C Hamon O Leruste P Malcles J Ocariz J Perez A Gladney L Biasini M Covarelli R Manoni E Angelini C Batignani G Bettarini S Carpinelli M Cenci R Cervelli A Forti F Giorgi MA Lusiani A Marchiori G Mazur MA Morganti M Neri N Paoloni E Rizzo G Walsh JJ Haire M Biesiada J Elmer P Lau YP Lu C Olsen J Smith AJS Telnov AV BARACCHINI, ELISABETTA Bellini F Cavoto G D'Orazio A del Re D Di Marco E Faccini R Ferrarotto F FERRONI, Fernando Gaspero M Jackson PD Gioi LL Mazzoni MA Morganti S Piredda G Polci F Renga F Voena C Ebert M Schroder H Waldi R Adye T Castelli G Franek B Olaiya EO Ricciardi S Roethel W Wilson FF Aleksan R Emery S Escalier M Gaidot A Ganzhur SF de Monchenault GH Kozanecki W Legendre M Vasseur G Yeche C Zito M Chen XR Liu H Park W Purohit MV Wilson JR Allen MT Aston D Bartoldus R Bechtle P Berger N Claus R Coleman JP Convery MR Dingfelder JC Dorfan J Dubois-Felsmann GP Dujmic D Dunwoodie W Field RC Glanzman T Gowdy SJ Graham MT Grenier P Hast C Hryn'ova T Innes WR Kaminski J Kelsey MH Kim H Kim P Kocian ML Leith DWGS Li S Luitz S Luth V Lynch HL MacFarlane DB Marsiske H Messner R Muller DR O'Grady CP Ofte I Perazzo A Perl M Pulliam T Ratcliff BN Roodman A Salnikov AA Schindler RH Schwiening J Snyder A Stelzer J Su D Sullivan MK Suzuki K Swain SK Thompson JM Va'vra J Van Bakel N Wagner AP Weaver M Wisniewski WJ Wittgen M Wright DH Yarritu AK Yi K Young CC Burchat PR Edwards AJ Majewski SA Petersen BA Wilden L Ahmed S Alam MS Bula R Ernst JA Jain V Pan B Saeed MA Wappler FR Zain SB Bugg W Krishnamurthy M Spanier SM Eckmann R Ritchie JL Ruland AM Schilling CJ Schwitters RF Izen JM Lou XC Ye S Bianchi F Gallo F Gamba D Pelliccioni M Bomben M Bosisio L Cartaro C Cossutti F Della Ricca G Lanceri L Vitale L Azzolini V Lopez-March N Martinez-Vidal F Milanes DA Oyanguren A Albert J Banerjee S Bhuyan B Hamano K Kowalewski R Nugent IM Roney JM Sobie RJ Back JJ Harrison PF Latham TE Mohanty GB Pappagallo M Band HR Chen X Dasu S Flood KT Hollar JJ Kutter PE Pan Y Pierini M Prepost R Wu SL Yu Z Neal H mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2007
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	We present evidence for D-0-(D) over bar (0) mixing in D-0 -> K+pi(-) decays from 384 fb(-1) of e(+)e(-) colliding-beam data recorded near root s=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x('2)=[-0.22 +/- 0.30(stat)+/- 0.21(syst)]x10(-3) and y(')=[9.7 +/- 4.4(stat)+/- 3.1(syst)]x10(-3) and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R-D, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303 +/- 0.016(stat)+/- 0.010(syst)]%. We find no evidence for CP violation.
Handle:	http://hdl.handle.net/20.500.12571/942
Appare nelle tipologie:	1.1 Articolo in rivista

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