Improved Measurement of the Cabibbo-Kobayashi-Maskawa angle alpha using B0(B) --> rho+rho- decays

B Aubert; R Barate; D Boutigny; F Couderc; Y Karyotakis; J P Lees; V Poireau; V Tisserand; A Zghiche; E Grauges; A Palano; M Pappagallo; A Pompili; J C Chen; N D Qi; G Rong; P Wang; Y S Zhu; G Eigen; I Ofte; B Stugu; G S Abrams; A W Borgland; A B Breon; D N Brown; J Button-Shafer; R N Cahn; E Charles; C T Day; M S Gill; A V Gritsan; Y Groysman; R G Jacobsen; R W Kadel; J Kadyk; L T Kerth; Yu G Kolomensky; G Kukartsev; G Lynch; L M Mir; P J Oddone; T J Orimoto; M Pripstein; N A Roe; M T Ronan; W A Wenzel; M Barrett; K E Ford; T J Harrison; A J Hart; C M Hawkes; S E Morgan; A T Watson; M Fritsch; K Goetzen; T Held; H Koch; B Lewandowski; M Pelizaeus; K Peters; T Schroeder; M Steinke; J T Boyd; J P Burke; N Chevalier; W N Cottingham; M P Kelly; T Cuhadar-Donszelmann; C Hearty; N S Knecht; T S Mattison; J A McKenna; D Thiessen; A Khan; P Kyberd; L Teodorescu; A E Blinov; V E Blinov; A D Bukin; V P Druzhinin; V B Golubev; V N Ivanchenko; E A Kravchenko; A P Onuchin; S I Serednyakov; Yu I Skovpen; 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M Dickopp; E Feltresi; A Hauke; V Klose; H M Lacker; E Maly; R Nogowski; S Otto; A Petzold; G Schott; J Schubert; K R Schubert; R Schwierz; J E Sundermann; D Bernard; G R Bonneaud; P Grenier; S Schrenk; Ch Thiebaux; G Vasileiadis; M Verderi; D J Bard; P J Clark; W Gradl; F Muheim; S Playfer; Y Xie; M Andreotti; V Azzolini; D Bettoni; C Bozzi; R Calabrese; G Cibinetto; E Luppi; M Negrini; L Piemontese; A Sarti; F Anulli; R Baldini-Ferroli; A Calcaterra; R de Sangro; G Finocchiaro; P Patteri; I M Peruzzi; M Piccolo; A Zallo; A Buzzo; R Capra; R Contri; M Lo Vetere; M Macri; M R Monge; S Passaggio; C Patrignani; E Robutti; A Santroni; S Tosi; S Bailey; G Brandenburg; K S Chaisanguanthum; M Morii; E Won; R S Dubitzky; U Langenegger; J Marks; S Schenk; U Uwer; W Bhimji; D A Bowerman; P D Dauncey; U Egede; J R Gaillard; G W Morton; J A Nash; M B Nikolich; G P Taylor; M J Charles; G J Grenier; U Mallik; A K Mohapatra; J Cochran; H B Crawley; V Eyges; W T Meyer; S Prell; E I Rosenberg; A E Rubin; J Yi; N Arnaud; M Davier; X Giroux; G Grosdidier; A Höcker; F Le Diberder; V Lepeltier; A M Lutz; T C Petersen; M Pierini; S Plaszczynski; S Rodier; P Roudeau; M H Schune; A Stocchi; G Wormser; C H Cheng; D J Lange; M C Simani; D M Wright; A J Bevan; C A Chavez; J P Coleman; I J Forster; J R Fry; E Gabathuler; R Gamet; K A George; D E Hutchcroft; R J Parry; D J Payne; C Touramanis; C M Cormack; F Di Lodovico; C L Brown; G Cowan; R L Flack; H U Flaecher; M G Green; P S Jackson; T R McMahon; S Ricciardi; F Salvatore; D Brown; C L Davis; J Allison; N R Barlow; R J Barlow; M C Hodgkinson; G D Lafferty; M T Naisbit; J C Williams; C Chen; A Farbin; W D Hulsbergen; A Jawahery; D Kovalskyi; C K Lae; V Lillard; D A Roberts; G Blaylock; C Dallapiccola; S S Hertzbach; R Kofler; V B Koptchev; T B Moore; S Saremi; H Staengle; S Willocq; R Cowan; K Koeneke; G Sciolla; S J Sekula; F Taylor; R K Yamamoto; H Kim; P M Patel; S H Robertson; A Lazzaro; V Lombardo; F Palombo; J M Bauer; L Cremaldi; V Eschenburg; 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G Rizzo; G Simi; J Walsh; M Haire; D Judd; K Paick; D E Wagoner; J Biesiada; N Danielson; P Elmer; Y P Lau; C Lu; J Olsen; A J S Smith; A V Telnov; F Bellini; G Cavoto; A D'Orazio; E Di Marco; R Faccini; F Ferrarotto; F Ferroni; M Gaspero; L Li Gioi; M A Mazzoni; S Morganti; G Piredda; F Polci; F Safai Tehrani; C Voena; S Christ; H Schröder; G Wagner; R Waldi; T Adye; N De Groot; B Franek; G P Gopal; E O Olaiya; F F Wilson; R Aleksan; S Emery; A Gaidot; S F Ganzhur; P-F Giraud; G Graziani; G Hamel de Monchenault; W Kozanecki; M Legendre; G W London; B Mayer; G Vasseur; Ch Yèche; M Zito; M V Purohit; A W Weidemann; J R Wilson; F X Yumiceva; T Abe; M T Allen; D Aston; R Bartoldus; N Berger; A M Boyarski; O L Buchmueller; R Claus; M R Convery; M Cristinziani; J C Dingfelder; D Dong; J Dorfan; D Dujmic; W Dunwoodie; S Fan; R C Field; T Glanzman; S J Gowdy; T Hadig; V Halyo; C Hast; T Hryn'ova; W R Innes; S Kazuhito; M H Kelsey; P Kim; M L Kocian; D W G S Leith; J Libby; S Luitz; V Luth; H L Lynch; 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J R Johnson; P E Kutter; H Li; R Liu; B Mellado; A Mihalyi; Y Pan; R Prepost; P Tan; J H von Wimmersperg-Toeller; J Wu; S L Wu; Z Yu; M G Greene; H Neal; BABAR Collaboration

doi:10.1103/PhysRevLett.95.041805

Improved Measurement of the Cabibbo-Kobayashi-Maskawa angle alpha using B0(B) --> rho+rho- decays

Phys Rev Lett. 2005 Jul 22;95(4):041805. doi: 10.1103/PhysRevLett.95.041805. Epub 2005 Jul 21.

Authors

B Aubert¹, R Barate, D Boutigny, F Couderc, Y Karyotakis, J P Lees, V Poireau, V Tisserand, A Zghiche, E Grauges, A Palano, M Pappagallo, A Pompili, J C Chen, N D Qi, G Rong, P Wang, Y S Zhu, G Eigen, I Ofte, B Stugu, G S Abrams, A W Borgland, A B Breon, D N Brown, J Button-Shafer, R N Cahn, E Charles, C T Day, M S Gill, A V Gritsan, Y Groysman, R G Jacobsen, R W Kadel, J Kadyk, L T Kerth, Yu G Kolomensky, G Kukartsev, G Lynch, L M Mir, P J Oddone, T J Orimoto, M Pripstein, N A Roe, M T Ronan, W A Wenzel, M Barrett, K E Ford, T J Harrison, A J Hart, C M Hawkes, S E Morgan, A T Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, T Schroeder, M Steinke, J T Boyd, J P Burke, N Chevalier, W N Cottingham, M P Kelly, T Cuhadar-Donszelmann, C Hearty, N S Knecht, T S Mattison, J A McKenna, D Thiessen, A Khan, P Kyberd, L Teodorescu, A E Blinov, V E Blinov, A D Bukin, V P Druzhinin, V B Golubev, V N Ivanchenko, E A Kravchenko, A P Onuchin, S I Serednyakov, Yu I Skovpen, E P Solodov, A N Yushkov, D Best, M Bondioli, M Bruinsma, M Chao, I Eschrich, D Kirkby, A J Lankford, M Mandelkern, R K Mommsen, W Roethel, D P Stoker, C Buchanan, B L Hartfiel, A J R Weinstein, S D Foulkes, J W Gary, O Long, B C Shen, K Wang, L Zhang, D Del Re, H K Hadavand, E J Hill, D B Macfarlane, H P Paar, S Rahatlou, V Sharma, J W Berryhill, C Campagnari, A Cunha, B Dahmes, T M Hong, A Lu, M A Mazur, J D Richman, W Verkerke, T W Beck, A M Eisner, C J Flacco, C A Heusch, J Kroseberg, W S Lockman, G Nesom, T Schalk, B A Schumm, A Seiden, P Spradlin, D C Williams, M G Wilson, J Albert, E Chen, G P Dubois-Felsmann, A Dvoretskii, D G Hitlin, I Narsky, T Piatenko, F C Porter, A Ryd, A Samuel, S Yang, R Andreassen, S Jayatilleke, G Mancinelli, B T Meadows, M D Sokoloff, F Blanc, P Bloom, S Chen, W T Ford, U Nauenberg, A Olivas, P Rankin, W O Ruddick, J G Smith, K A Ulmer, J Zhang, A Chen, E A Eckhart, J L Harton, A Soffer, W H Toki, R J Wilson, Q Zeng, B Spaan, D Altenburg, T Brandt, J Brose, M Dickopp, E Feltresi, A Hauke, V Klose, H M Lacker, E Maly, R Nogowski, S Otto, A Petzold, G Schott, J Schubert, K R Schubert, R Schwierz, J E Sundermann, D Bernard, G R Bonneaud, P Grenier, S Schrenk, Ch Thiebaux, G Vasileiadis, M Verderi, D J Bard, P J Clark, W Gradl, F Muheim, S Playfer, Y Xie, M Andreotti, V Azzolini, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Luppi, M Negrini, L Piemontese, A Sarti, F Anulli, R Baldini-Ferroli, A Calcaterra, R de Sangro, G Finocchiaro, P Patteri, I M Peruzzi, M Piccolo, A Zallo, A Buzzo, R Capra, R Contri, M Lo Vetere, M Macri, M R Monge, S Passaggio, C Patrignani, E Robutti, A Santroni, S Tosi, S Bailey, G Brandenburg, K S Chaisanguanthum, M Morii, E Won, R S Dubitzky, U Langenegger, J Marks, S Schenk, U Uwer, W Bhimji, D A Bowerman, P D Dauncey, U Egede, J R Gaillard, G W Morton, J A Nash, M B Nikolich, G P Taylor, M J Charles, G J Grenier, U Mallik, A K Mohapatra, J Cochran, H B Crawley, V Eyges, W T Meyer, S Prell, E I Rosenberg, A E Rubin, J Yi, N Arnaud, M Davier, X Giroux, G Grosdidier, A Höcker, F Le Diberder, V Lepeltier, A M Lutz, T C Petersen, M Pierini, S Plaszczynski, S Rodier, P Roudeau, M H Schune, A Stocchi, G Wormser, C H Cheng, D J Lange, M C Simani, D M Wright, A J Bevan, C A Chavez, J P Coleman, I J Forster, J R Fry, E Gabathuler, R Gamet, K A George, D E Hutchcroft, R J Parry, D J Payne, C Touramanis, C M Cormack, F Di Lodovico, C L Brown, G Cowan, R L Flack, H U Flaecher, M G Green, P S Jackson, T R McMahon, S Ricciardi, F Salvatore, D Brown, C L Davis, J Allison, N R Barlow, R J Barlow, M C Hodgkinson, G D Lafferty, M T Naisbit, J C Williams, C Chen, A Farbin, W D Hulsbergen, A Jawahery, D Kovalskyi, C K Lae, V Lillard, D A Roberts, G Blaylock, C Dallapiccola, S S Hertzbach, R Kofler, V B Koptchev, T B Moore, S Saremi, H Staengle, S Willocq, R Cowan, K Koeneke, G Sciolla, S J Sekula, F Taylor, R K Yamamoto, H Kim, P M Patel, S H Robertson, A Lazzaro, V Lombardo, F Palombo, J M Bauer, L Cremaldi, V Eschenburg, R Godang, R Kroeger, J Reidy, D A Sanders, D J Summers, H W Zhao, S Brunet, D Côté, P Taras, B Viaud, H Nicholson, N Cavallo, G De Nardo, F Fabozzi, C Gatto, L Lista, D Monorchio, P Paolucci, D Piccolo, C Sciacca, M Baak, H Bulten, G Raven, H L Snoek, L Wilden, C P Jessop, J M Losecco, T Allmendinger, G Benelli, K K Gan, K Honscheid, D Hufnagel, P D Jackson, H Kagan, R Kass, T Pulliam, A M Rahimi, R Ter-Antonyan, Q K Wong, J Brau, R Frey, O Igonkina, M Lu, C T Potter, N B Sinev, D Strom, E Torrence, F Colecchia, A Dorigo, F Galeazzi, M Margoni, M Morandin, M Posocco, M Rotondo, F Simonetto, R Stroili, C Voci, M Benayoun, H Briand, J Chauveau, P David, L Del Buono, Ch de la Vaissière, O Hamon, M J J John, Ph Leruste, J Malclès, J Ocariz, L Roos, G Therin, P K Behera, L Gladney, Q H Guo, J Panetta, M Biasini, R Covarelli, M Pioppi, C Angelini, G Batignani, S Bettarini, F Bucci, G Calderini, M Carpinelli, F Forti, M A Giorgi, A Lusiani, G Marchiori, M Morganti, N Neri, E Paoloni, M Rama, G Rizzo, G Simi, J Walsh, M Haire, D Judd, K Paick, D E Wagoner, J Biesiada, N Danielson, P Elmer, Y P Lau, C Lu, J Olsen, A J S Smith, A V Telnov, F Bellini, G Cavoto, A D'Orazio, E Di Marco, R Faccini, F Ferrarotto, F Ferroni, M Gaspero, L Li Gioi, M A Mazzoni, S Morganti, G Piredda, F Polci, F Safai Tehrani, C Voena, S Christ, H Schröder, G Wagner, R Waldi, T Adye, N De Groot, B Franek, G P Gopal, E O Olaiya, F F Wilson, R Aleksan, S Emery, A Gaidot, S F Ganzhur, P-F Giraud, G Graziani, G Hamel de Monchenault, W Kozanecki, M Legendre, G W London, B Mayer, G Vasseur, Ch Yèche, M Zito, M V Purohit, A W Weidemann, J R Wilson, F X Yumiceva, T Abe, M T Allen, D Aston, R Bartoldus, N Berger, A M Boyarski, O L Buchmueller, R Claus, M R Convery, M Cristinziani, J C Dingfelder, D Dong, J Dorfan, D Dujmic, W Dunwoodie, S Fan, R C Field, T Glanzman, S J Gowdy, T Hadig, V Halyo, C Hast, T Hryn'ova, W R Innes, S Kazuhito, M H Kelsey, P Kim, M L Kocian, D W G S Leith, J Libby, S Luitz, V Luth, H L Lynch, H Marsiske, R Messner, D R Muller, C P O'grady, V E Ozcan, A Perazzo, M Perl, B N Ratcliff, A Roodman, A A Salnikov, R H Schindler, J Schwiening, A Snyder, A Soha, J Stelzer, J Strube, D Su, M K Sullivan, J M Thompson, J Va'vra, S R Wagner, M Weaver, W J Wisniewski, M Wittgen, D H Wright, A K Yarritu, C C Young, P R Burchat, A J Edwards, S A Majewski, B A Petersen, C Roat, M Ahmed, S Ahmed, M S Alam, J A Ernst, M A Saeed, M Saleem, F R Wappler, W Bugg, M Krishnamurthy, S M Spanier, R Eckmann, J L Ritchie, A Satpathy, R F Schwitters, J M Izen, I Kitayama, X C Lou, S Ye, F Bianchi, M Bona, F Gallo, D Gamba, M Bomben, L Bosisio, C Cartaro, F Cossutti, G Della Ricca, S Dittongo, S Grancagnolo, L Lanceri, P Poropat, L Vitale, G Vuagnin, F Martinez-Vidal, R S Panvini, Sw Banerjee, B Bhuyan, C M Brown, D Fortin, K Hamano, R Kowalewski, J M Roney, R J Sobie, J J Back, P F Harrison, T E Latham, G B Mohanty, H R Band, X Chen, B Cheng, S Dasu, M Datta, A M Eichenbaum, K T Flood, M Graham, J J Hollar, J R Johnson, P E Kutter, H Li, R Liu, B Mellado, A Mihalyi, Y Pan, R Prepost, P Tan, J H von Wimmersperg-Toeller, J Wu, S L Wu, Z Yu, M G Greene, H Neal; BABAR Collaboration

Affiliation

¹ Laboratoire de Physique des Particules, Annecy-le-Vieux, France.

PMID: 16090799
DOI: 10.1103/PhysRevLett.95.041805

Abstract

We present results from an analysis of B(0)B(0)--> rho(+)rho(-) using 232 x 10(6) Gamma (4S) --> BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We measure the longitudinal polarization fraction f(L) = 0.978 +/- 0.014(stat) + 0.021 / -0.029(syst) and the CP-violating parameters S(L)= -0.33 +/- 0.24(stat) + 0.08 / -0.14(syst) and C(L)= -0.03 +/- 0.18(stat) +/- 0.09(syst). Using an isospin analysis of B --> rhorho decays, we determine the unitarity triangle parameter alpha. The solution compatible with the standard model is alpha = (100 +/- 13) degrees.