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Time-integrated and time-dependent angular analyses of B → J/ψKπ: A measurement of cos2β with no sign ambiguity from strong phases

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:3 (2005) 032005-1-032005-30

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, JM Gaillard, Y Karyotakis, JP Lees, V Poireau, V Tisserand, A Zghiche, A Palano, A Pompili, J Chen, N Qi, G Rong, P Wang, Y Zhu, GP Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, C Day, M Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, JA Kadyk, LT Kerth, YG Kolomensky, GA Kukartsev, GR Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, N Roé, MT Ronan, VG Shelkov, WA Wenzel, MJP Barrett, KE Ford, TJE Harrison, AJ Hart, CM Hawkes, SE Morgan, AT Watson, M Fritsch, K Goetzen, T Held, HC Koch, B Lewandowski, M Pelizaeus, MF Steinke, JT Boyd, NI Chevalier, WN Cottingham, MP Kelly, TE Latham, FF Wilson, T Çuhadar-Dönszelmann, C Hearty, NS Knecht, TS Mattison, JA McKenna, DM Thiessen, A Khan, P Kyberd, L Teodorescu, AE Blinov, VE Blinov, VP Druzhinin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, DS Best, MS Bruinsma, M Chao, IG Eschrich, D Kirkby, AJ Lankford, MA Mandelkern, RK Mommsen, W Roethel, DP Stoker, CD Buchanan, BL Hartfiel, SD Foulkes, JW Gary, BC Shen, K Wang, D Del Re, HK Hadavand, EJ Hill, DB MacFarlane, HP Paar, S Rahatlou, V Sharma, J Adam Cunha, JW Berryhill, C Campagnari, B Dahmes, TM Hong, O Long, A Lu, MA Mazur, JD Richman, W Verkerke, TW Beck, AM Eisner, CA Heusch, J Kroseberg, WS Lockman, G Nesom, TL Schalk, BA Schumm, AM Seiden, P Spradlin, DC Williams, MG Wilson, JB Albert, E Chen, GP Dubois-Felsmann, A Dvoretskii, DG Hitlin, IV Narsky, T Piatenko, FC Porter, A Ryd, A Samuel, S Yang, S Jayatilleke, G Mancinelli, BT Meadows, MD Sokoloff, F Blanc, PC Bloom, S Chen, WT Ford, U Nauenberg, A Olivas, P Rankin, JG Smith, J Zhang, L Zhang, AE Chen, JL Harton, A Soffer, W Toki, RJ Wilson, QL Zeng, DD Altenburg, TJ Brandt, J Brose, M Dickopp, E Feltresi, A Hauke, HM Lacker, R Müller-Pfefferkorn, R Nogowski, S Otto, A Petzold, J Schubert, KR Schubert, R Schwierz, B Spaan, JE Sundermann, D Bernard, GR Bonne̊aud, F Broçhard, PA Grenier, S Schrenk, C Thiebaux, G Vasileiadis, M Verderi, DJ Bard, PJ Clark, DR Lavin, F Muheim, SM Playfer, Y Xie, M Andreotti, V Azzolini, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Luppi, M Negrini, L Piemontese, A Sarti, EA Treadwell, F Anulli, RBF Baldini-Ferroli, AC Calcaterra, R De Sangro, G Finocchiaro, P Patterí, IM Peruzzi, M Piccolo, AZ Zallo, A Buzzo, R Capra, R Contri, G Crosetti, M Lo Vetere, MM Macrí, MR Monge, SP Passaggio, C Patrignani, E Robutti, A Santroni, S Tosi, SJ Bailey, GW Brandenburg, KS Chaisanguanthum, M Morii, E Won, RS Dubitzky, U Langenegger, J Marks, U Uwer, W Bhimji, DA Bowerman, PD Dauncey, U Egede, JR Gaillard, GW Morton, JA Nash, MB Nikolich, GP Taylor, MJ Charles, GJ Grenier, U Mallik, J Cochran, HB Crawley, JW Lämsä, WT Meyer, SA Prell, EI Rosenberg, AE Rubin, JI Yi, M Biasini, R Covarelli, M Pioppí, M Davier, X Giroux, G Grosdidier, A Höcker, S Laplace, FL Le Diberder, V Lepeltìer, AM Lutz, TC Petersen, S Plaszczynski, MH Schune, L Tantot, G Wormser, C Cheng, DJ Lange, MC Simani, DM Wright, AJ Bevan, CA Chavez, JP Coleman, IJ Forster, JR Fry, E Gabathuler, R Gamet, DE Hutchcroft, RJ Parry, DJ Payne, RJ Sloane, C Touramanis, CM Cormack, F Di Lodovico, CL Brown, GA Cowan, RL Flack, HU Flaecher, MG Green, PS Jackson, TR McMahon, S Ricciardi, F Salvatore, MA Winter, DN Brown, CL Davis, JW Allison, NR Barlow, R Barlow, MC Hodgkinson, GD Lafferty, AJ Lyon, JC Williams, A Farbin, WD Hulsbergen, A Jawahery, D Kovalskyi, CK Lae, V Lillard, DA Roberts, GT Blaylock, C Dallapiccola, SS Hertzbach, RR Kofler, VB Koptchev, TB Moore, S Saremi, H Staengle, SY Willocq, RF Cowan, G Sciolla, SJ Sekula, FE Taylor, RK Yamamoto, DJJ Mangeol, PM Patel, SH Robertson, A Lazzaro, VP Lombardo, FF Palombo, JM Bauer, LM Cremaldi, VO Eschenburg, R Godang, RS Kroeger, JJ Reidy, DA Sanders, DJ Summers, H Zhao, SMK Brunet, D Côté, P Taras, HW Nicholson, N Cavallo, F Fabozzi, C Gatto, L Lísta, D Monorchio, PS Paolucci, D Piccolo, C Sciacca, M Baak, HJ Bülten, G Raven, HL Snoek, LH Wilden, CP Jessop, JM Losecco, T Allmendinger, KK Gan, K Honscheiď, D Hufnagel, HP Kagan, RD Kass, TM Pulliam, AM Rahimi, R Ter-Antonyan, QK Wong, JE Brau, RE Frey, OB Igonkina, CT Potter, NB Sinev, DM Strom, E Torrence, F Colecchia, A Dorigo, F Galeazzi, MM Margoni, M Morandin, M Posocco, M Rotondo, F Simonetto, R Stroili, G Tiozzo, CF Voci, M Benayoun, H Briand, JP Chauveau, PY David, C De La Vaissière, L Del Buono, O Hamon, MJJ John, PH Leruste, J Malclès, J Ocariz, M Pivk, L Roos, S T'Jampens, G Thérin, PF Manfredi, V Re, PK Behera, LD Gladney, QH Guo, JH Panetta, P Angelini, G Batignani, S Bettarini, M Bondioli, F Bucci, G Calderini, M Carpinelli, F Forti, MA Giorgi, A Lusiani, G Marchiori, F Martínez-Vidal, M Morganti, N Neri, E Paoloni, MJR Rama, GA Rizzo, F Sandrelli, JJ Walsh, M Haire, DJ Judd, K Paick, DE Wagoner, N Danielson, PJ Elmer, YP Lau, C Lu, V Miftakov, JT Olsen, AJS Smith, AV Telnov, F Bellini, R Faccini, F Ferrarotto, F Ferroni, M Gaspero, L Li Gioi, MA Mazzoni, S Morganti, M Pierini, G Piredda, F Safai Tehrani, C Voena, G Cavoto, S Christ, GJ Wagner, R Waldi, TJ Adye, ND De Groot, B Franěk, NI Geddes, GP Gopal, EO Olaiya, R Aleksan, S Emery, A Gaidot, SF Ganzhur, PF Giraud, G Hamel De Monchenault, WA Kozanecki, M Legendre, GW London, B Mayer, G Schott, G Vasseur, C Yèche, M Zito, MV Purohit, AW Weidemann, JR Wilson, FX Yumiceva, T Abe, DSJ Aston, R Bartoldus, N Berger, AM Boyarski, OL Buchmueller, R Claus, MR Convery, M Cristinziani, G De Nardo, D Dong, JM Dorfan, D Dujmić, WM Dunwoodie, EE Elsen, S Fan, RC Field, T Glanzman, SJ Gowdy, T Hadig, V Halyo, C Hast, T Hryn'ova, WR Innes, MH Kelsey, P Kim, ML Kocian, DWGS Leith, J Libby, S Luitz, VG Lüth, HL Lynch, H Marsiske, RL Messner, DR Müller, CP O'Grady, VE Özcan, A Perazzo, ML Perl, S Petrak, BN Ratcliff, AJ Roodman, AA Salnikov, RH Schindler, J Schwiening, G Simi, AE Snyder, A Soha, J Stelzer, D Su, MK Sullivan, J Va'vra, SR Wagner, M Weaver, AJR Weinstein, WJ Wisniewski, M Wittgen, DH Wright, AK Yarritu, C Young, PR Burchat, AJ Edwards, TI Meyer, BA Petersen, C Roat, MF Ahmed, SN Ahmed, MSF Alam, JA Ernst, MA Saeed, MS Saleem, FR Wappler, WM Bugg, M Krishnamurthy, SM Spanier, R Eckmann, H Kim, JL Ritchie, AS Satpathy, RF Schwitters, JM Izen, I Kitayama, X Lou, SZ Ye, F Bianchi, M Bona, F Gallo, D Gamba, L Bosisio, C Cartaro, F Cossutti, G Della Ricca, S Dittongo, S Grancagnolo, LW Lanceri, P Poropat, L Vitale, G Vuagnin, RS Panvini, SW Banerjee, CM Brown, D Fortin, PD Jackson, RV Kowalewski, JM Roney, RJ Sobie, J Back, PF Harrison, GB Mohanty, HR Band, X Chen, B Cheng, S Dasu, M Datta, AM Eichenbaum, KT Flood, MT Graham, JJ Hollar, JR Johnson, PE Kutter, H Li, R Liu, A Mihalyi, Y Pan, R Prepost, P Tan, JH Von Wimmersperg-Toeller, J Wu, S Wu, Z Yu, MG Greene, HA Neal

Abstract:

We present results on B → J/ψKπ decays using e+ e- annihilation data collected with the BABAR detector at the Y(4S) resonance. The detector is located at the PEP-II asymmetric-energy storage ring facility at the Stanford Linear Accelerator Center. Using approximately 88 × 106 BB̄ pairs, we measure the decay amplitudes for the flavor eigenmodes and observe strong-phase differences indicative of final-state interactions with a significance of 7.6 standard deviations. We use the interference between the Kπ S-wave and P-wave amplitudes in the region of the K*(892) to resolve the ambiguity in the determination of these strong phases. We then perform an ambiguity-free measurement of cos2β using the angular and time-dependent asymmetry in B → J/ψK* 0(KS 0π0) decays. With sin2β fixed at its measured value and cos2β treated as an independent parameter, we find cos2β = 2.72-0.79 +0.50(stat) ± 0.27(syst), determining the sign of cos2β to be positive at 86% C.L. © 2005 The American Physical Society.
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The DIRC particle identification system for the BaBar experiment

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 538 (2005) 281-357

Authors:

JF Libby, Blair Ratcliff, Robert Wilson, Jochen Schwiening
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Search for radiative penguin decays B+ → ρ+γ,B0 → ρ0γ, and B0 → ωγ

Physical Review Letters 94:1 (2005)

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, MT Ronan, VG Shelkov, WA Wenzel, M Barrett, KE Ford, TJ Harrison, AJ Hart, CM Hawkes, SE Morgan, AT Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, FF Wilson, T Cuhadar-Donszelmann, C Hearty, NS Knecht, TS Mattison, JA McKenna, D Thiessen, A Khan, P Kyberd, L Teodorescu, AE Blinov, VE Blinov, VP Druzhinin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel, DP Stoker, C Buchanan, BL Hartfiel, SD Foulkes, JW Gary

Abstract:

A search for the decays B → ρ(770)γ and B0 → ω(782)γ is performed on a sample of 211 × 106 Y(45) → BB̄ events collected by the BABAR detector at the SLAC PEP-II asymmetric-energy e+ e- storage ring. No evidence for the decays is seen. We set the following limits on the individual branching fractions: ℬ(B+ → rho;+γ] < 1.8 × 10-6, ℬ(B0 → ρ0γ < 0.4 × 10-6, and Bscr;(B0 → ωγ) < 1.0 × 10-6 at the 90% confidence level. We use the quark model to limit the combined branching fraction Bscr;̄[B → (ρ/ω) γ] < 1.2 × 10-6, from which we determine a constraint on the ratio of Cabibbo-Kobayashi-Maskawa matrix elements |Vtd|/ |Vts|. © 2005 The American Physical Society.
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Measurement of the ratio B(B- → D*0K -)/B(B → D*0π-) and of the CP asymmetry of B- → D*CP+0K - decays

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:3 (2005)

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, Y Karyotakis, JP Lees, V Poireau, V Tisserand, A Zghiche, E Grauges-Pous, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, MT Ronan, WA Wenzel, M Barrett, KE Ford, TJ Harrison, AJ Hart, CM Hawkes, SE Morgan, AT Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, T Schroeder, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, FF Wilson, T Cuhadar-Donszelmann, C Hearty, NS Knecht, TS Mattison, JA McKenna, D Thiessen, A Khan, P Kyberd, L Teodorescu, AE Blinov, VE Blinov, VP Druzhinin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel, DP Stoker, C Buchanan, BL Hartfiel, AJR Weinstein, SD Foulkes

Abstract:

We study the decays B- → D*0π - and B-→ D*0K-, where the D*0 decays into D0π0, with the D0 reconstructed in the CP-even (CP+) eigenstates K-K + and π-π+ and in the (non-CP) channels K-π+, K -π+π+π-, and K -π+π0. Using a sample of about 123 × 106 BB̄ pairs, we measure the ratios of decay rates R*non-CP ≡ B(B- → D* non-CP0K-)/B(B- → D*non-CP0π-) = 0.086 ± 0.0040(stat)-0.0031+0.0042(syst), and provide the first measurements of R*CP+ ≡ B(B- → D*CP+0K-)/B(B- → D*CP+0π-) = 0.0086 ± 0.021(stat) ± 0.007(syst), and of the CP asymmetry A*CP+ ≡ B(B- → D*CP+0K -)-B(B+ → D*CP+0K +)/B(B- → D*CP+0K -)+B(B+ → D*CP+0K +) = 0.10 ± 0.23(stat)-0.04+0.03(syst). © 2005 The American Physical Society.
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Search for a charged partner of the X(3872) in the B meson decay B → X-K, X- → J/ψπ-π0

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:3 (2005)

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, Y Karyotakis, JP Lees, V Poireau, V Tisserand, A Zghiche, E Grauges-Pous, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, MT Ronan, WA Wenzel, M Barrett, KE Ford, TJ Harrison, AJ Hart, CM Hawkes, SE Morgan, AT Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, T Schroeder, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, FF Wilson, T Cuhadar-Donszelmann, C Hearty, NS Knecht, TS Mattison, JA McKenna, D Thiessen, A Khan, P Kyberd, L Teodorescu, AE Blinov, VE Blinov, VP Druzhinin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel, DP Stoker, C Buchanan, BL Hartfiel, AJR Weinstein, SD Foulkes

Abstract:

We search for a charged partner of the X(3872) in the decay B → X - K, X- → J/ψπ-π0, using 234 × 106 BB events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. The resulting product branching fraction upper limits are B(B 0 → X- K+, X- → J/ψπ-π0) < 5.4 × 10-6 and B(B- → X-K̄0, X- → J/ψπ-π0) < 22 × 10-6 at the 90% confidence level. © 2005 The American Physical Society.
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