Author: "A P Boyd" / Journal: physical review d - Searchworks@Jio Institute Digital Library Search Results

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152 results on '"A P Boyd"'

1. First neutrino interaction candidates at the LHC

Author: Abreu, Henso, Afik, Yoav, Antel, Claire, Arakawa, Jason, Ariga, Akitaka, Ariga, Tomoko, Bernlochner, Florian, Boeckh, Tobias, Boyd, Jamie, Brenner, Lydia, Cadoux, Franck, Casper, David W, Cavanagh, Charlotte, Cerutti, Francesco, Chen, Xin, Coccaro, Andrea, D’Onofrio, Monica, Dozen, Candan, Favre, Yannick, Fellers, Deion, Feng, Jonathan L, Ferrere, Didier, Gibson, Stephen, Gonzalez-Sevilla, Sergio, Gwilliam, Carl, Hsu, Shih-Chieh, Hu, Zhen, Iacobucci, Giuseppe, Inada, Tomohiro, Ismail, Ahmed, Jakobsen, Sune, Kajomovitz, Enrique, Kling, Felix, Kose, Umut, Kuehn, Susanne, Lefebvre, Helena, Levinson, Lorne, Li, Ke, Liu, Jinfeng, Magliocca, Chiara, McFayden, Josh, Meehan, Sam, Mladenov, Dimitar, Nakamura, Mitsuhiro, Nakano, Toshiyuki, Nessi, Marzio, Neuhaus, Friedemann, Nevay, Laurie, Otono, Hidetoshi, Pandini, Carlo, Pang, Hao, Paolozzi, Lorenzo, Petersen, Brian, Pietropaolo, Francesco, Prim, Markus, Queitsch-Maitland, Michaela, Resnati, Filippo, Rokujo, Hiroki, Sabaté-Gilarte, Marta, Salfeld-Nebgen, Jakob, Sato, Osamu, Scampoli, Paola, Schmieden, Kristof, Schott, Matthias, Sfyrla, Anna, Shively, Savannah, Spencer, John, Takubo, Yosuke, Theiner, Ondrej, Torrence, Eric, Trojanowski, Sebastian, Tufanli, Serhan, Vormwald, Benedikt, Wang, Di, and Zhang, Gang
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: FASERν at the CERN Large Hadron Collider (LHC) is designed to directly detect collider neutrinos for the first time and study their cross sections at TeV energies, where no such measurements currently exist. In 2018, a pilot detector employing emulsion films was installed in the far-forward region of ATLAS, 480 m from the interaction point, and collected 12.2 fb-1 of proton-proton collision data at a center-of-mass energy of 13 TeV. We describe the analysis of this pilot run data and the observation of the first neutrino interaction candidates at the LHC. This milestone paves the way for high-energy neutrino measurements at current and future colliders.
Published: 2021

2. Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target

Author: Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Berguño, D Bravo, Bronner, C, Bron, S, Bubak, A, Avanzini, M Buizza, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Van, NT Hong, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex
Abstract: The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4)×1020 protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin2θ13 from reactor data and assuming normal mass ordering T2K measures sin2θ23=0.53-0.04+0.03 and Δm322=(2.45±0.07)×10-3 eV2 c-4. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper sin2θ23 octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2σ level.
Published: 2021

3. First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single-π+ production channel containing at least one proton

Author: Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Berguño, D Bravo, Bronner, C, Bron, S, Bubak, A, Avanzini, M Buizza, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Van, NT Hong, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Bioengineering
Abstract: This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-π+ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single π+ and at least one proton in the final state, at the ND280 off axis near detector of the T2K experiment. The extracted cross sections are compared to the predictions from different neutrino-nucleus interaction event generators. Overall, the results show a preference for models that have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.
Published: 2021

4. First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single- π+ production channel containing at least one proton

Author: Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Bravo Berguño, D, Bronner, C, Bron, S, Bubak, A, Buizza Avanzini, M, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Hong Van, NT, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B
Subjects: Bioengineering
Abstract: This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-π+ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single π+ and at least one proton in the final state, at the ND280 off axis near detector of the T2K experiment. The extracted cross sections are compared to the predictions from different neutrino-nucleus interaction event generators. Overall, the results show a preference for models that have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.
Published: 2021

5. Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target

Author: Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T, Asada, Y, Ashida, Y, Atkin, ET, Awataguchi, Y, Barker, GJ, Barr, G, Barrow, D, Batkiewicz-Kwasniak, M, Beloshapkin, A, Bench, F, Berardi, V, Berns, L, Bhadra, S, Blanchet, A, Blondel, A, Bolognesi, S, Bonus, T, Bourguille, B, Boyd, SB, Bravar, A, Bravo Berguño, D, Bronner, C, Bron, S, Bubak, A, Buizza Avanzini, M, Cao, S, Cartwright, SL, Catanesi, MG, Cervera, A, Chakrani, J, Cherdack, D, Christodoulou, G, Cicerchia, M, Coleman, J, Collazuol, G, Cook, L, Coplowe, D, Cudd, A, De Rosa, G, Dealtry, T, Delogu, CC, Dennis, SR, Densham, C, Dergacheva, A, Di Lodovico, F, Dolan, S, Douqa, D, Doyle, TA, Dumarchez, J, Dunne, P, Eguchi, A, Eklund, L, Emery-Schrenk, S, Ereditato, A, Finch, AJ, Fiorillo, G, Francois, C, Friend, M, Fujii, Y, Fukuda, R, Fukuda, Y, Fusshoeller, K, Giganti, C, Gonin, M, Goodman, EAG, Gorin, A, Grassi, M, Guigue, M, Hadley, DR, Hamacher-Baumann, P, Harris, DA, Hartz, M, Hasegawa, T, Hassani, S, Hastings, NC, Hayato, Y, Hiramoto, A, Hogan, M, Holeczek, J, Hong Van, NT, Honjo, T, Iacob, F, Ichikawa, AK, Ikeda, M, Ishida, T, Ishitsuka, M, Iwamoto, K, Izmaylov, A, Izumi, N, Jakkapu, M, and Jamieson, B
Subjects: hep-ex
Abstract: The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4)×1020 protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin2θ13 from reactor data and assuming normal mass ordering T2K measures sin2θ23=0.53-0.04+0.03 and Δm322=(2.45±0.07)×10-3 eV2 c-4. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper sin2θ23 octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2σ level.
Published: 2021

6. Neutrino interaction classification with a convolutional neural network in the DUNE far detector

Author: Abi, B, Acciarri, R, Acero, MA, Adamov, G, Adams, D, Adinolfi, M, Ahmad, Z, Ahmed, J, Alion, T, Alonso Monsalve, S, Alt, C, Anderson, J, Andreopoulos, C, Andrews, MP, Andrianala, F, Andringa, S, Ankowski, A, Antonova, M, Antusch, S, Aranda-Fernandez, A, Ariga, A, Arnold, LO, Arroyave, MA, Asaadi, J, Aurisano, A, Aushev, V, Autiero, D, Azfar, F, Back, H, Back, JJ, Backhouse, C, Baesso, P, Bagby, L, Bajou, R, Balasubramanian, S, Baldi, P, Bambah, B, Barao, F, Barenboim, G, Barker, GJ, Barkhouse, W, Barnes, C, Barr, G, Barranco Monarca, J, Barros, N, Barrow, JL, Bashyal, A, Basque, V, Bay, F, Bazo Alba, JL, Beacom, JF, Bechetoille, E, Behera, B, Bellantoni, L, Bellettini, G, Bellini, V, Beltramello, O, Belver, D, Benekos, N, Bento Neves, F, Berger, J, Berkman, S, Bernardini, P, Berner, RM, Berns, H, Bertolucci, S, Betancourt, M, Bezawada, Y, Bhattacharjee, M, Bhuyan, B, Biagi, S, Bian, J, Biassoni, M, Biery, K, Bilki, B, Bishai, M, Bitadze, A, Blake, A, Blanco Siffert, B, Blaszczyk, FDM, Blazey, GC, Blucher, E, Boissevain, J, Bolognesi, S, Bolton, T, Bonesini, M, Bongrand, M, Bonini, F, Booth, A, Booth, C, Bordoni, S, Borkum, A, Boschi, T, Bostan, N, Bour, P, Boyd, SB, Boyden, D, Bracinik, J, Braga, D, and Brailsford, D
Subjects: physics.ins-det, hep-ex
Abstract: The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2-5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino energies above 2 GeV. When considering all electron neutrino and antineutrino interactions as signal, a selection purity of 90% is achieved. These event selections are critical to maximize the sensitivity of the experiment to CP-violating effects.
Published: 2020

7. Neutrino interaction classification with a convolutional neural network in the DUNE far detector

Author: Abi, B, Acciarri, R, Acero, MA, Adamov, G, Adams, D, Adinolfi, M, Ahmad, Z, Ahmed, J, Alion, T, Monsalve, S Alonso, Alt, C, Anderson, J, Andreopoulos, C, Andrews, MP, Andrianala, F, Andringa, S, Ankowski, A, Antonova, M, Antusch, S, Aranda-Fernandez, A, Ariga, A, Arnold, LO, Arroyave, MA, Asaadi, J, Aurisano, A, Aushev, V, Autiero, D, Azfar, F, Back, H, Back, JJ, Backhouse, C, Baesso, P, Bagby, L, Bajou, R, Balasubramanian, S, Baldi, P, Bambah, B, Barao, F, Barenboim, G, Barker, GJ, Barkhouse, W, Barnes, C, Barr, G, Monarca, J Barranco, Barros, N, Barrow, JL, Bashyal, A, Basque, V, Bay, F, Alba, JL Bazo, Beacom, JF, Bechetoille, E, Behera, B, Bellantoni, L, Bellettini, G, Bellini, V, Beltramello, O, Belver, D, Benekos, N, Neves, F Bento, Berger, J, Berkman, S, Bernardini, P, Berner, RM, Berns, H, Bertolucci, S, Betancourt, M, Bezawada, Y, Bhattacharjee, M, Bhuyan, B, Biagi, S, Bian, J, Biassoni, M, Biery, K, Bilki, B, Bishai, M, Bitadze, A, Blake, A, Siffert, B Blanco, Blaszczyk, FDM, Blazey, GC, Blucher, E, Boissevain, J, Bolognesi, S, Bolton, T, Bonesini, M, Bongrand, M, Bonini, F, Booth, A, Booth, C, Bordoni, S, Borkum, A, Boschi, T, Bostan, N, Bour, P, Boyd, SB, Boyden, D, Bracinik, J, Braga, D, and Brailsford, D
Subjects: physics.ins-det, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2-5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino energies above 2 GeV. When considering all electron neutrino and antineutrino interactions as signal, a selection purity of 90% is achieved. These event selections are critical to maximize the sensitivity of the experiment to CP-violating effects.
Published: 2020

8. FASER’s physics reach for long-lived particles

Author: Ariga, Akitaka, Ariga, Tomoko, Boyd, Jamie, Cadoux, Franck, Casper, David W, Favre, Yannick, Feng, Jonathan L, Ferrere, Didier, Galon, Iftah, Gonzalez-Sevilla, Sergio, Hsu, Shih-Chieh, Iacobucci, Giuseppe, Kajomovitz, Enrique, Kling, Felix, Kuehn, Susanne, Levinson, Lorne, Otono, Hidetoshi, Petersen, Brian, Sato, Osamu, Schott, Matthias, Sfyrla, Anna, Smolinsky, Jordan, Soffa, Aaron M, Takubo, Yosuke, Torrence, Eric, Trojanowski, Sebastian, and Zhang, Gang
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: The ForwArd Search ExpeRiment (FASER) is an approved experiment dedicated to searching for light, extremely weakly interacting particles at the LHC. Such particles may be produced in the LHC's high-energy collisions and travel long distances through concrete and rock without interacting. They may then decay to visible particles in FASER, which is placed 480 m downstream of the ATLAS interaction point. In this work we briefly describe the FASER detector layout and the status of potential backgrounds. We then present the sensitivity reach for FASER for a large number of long-lived particle models, updating previous results to a uniform set of detector assumptions, and analyzing new models. In particular, we consider all of the renormalizable portal interactions, leading to dark photons, dark Higgs bosons, and heavy neutral leptons; light B-L and Li-Lj gauge bosons; axionlike particles that are coupled dominantly to photons, fermions, and gluons through nonrenormalizable operators; and pseudoscalars with Yukawa-like couplings. We find that FASER and its follow-up, FASER 2, have a full physics program, with discovery sensitivity in all of these models and potentially far-reaching implications for particle physics and cosmology.
Published: 2019

9. Evidence of electron neutrino appearance in a muon neutrino beam

Author: Abe, K, Abgrall, N, Aihara, H, Akiri, T, Albert, JB, Andreopoulos, C, Aoki, S, Ariga, A, Ariga, T, Assylbekov, S, Autiero, D, Barbi, M, Barker, GJ, Barr, G, Bass, M, Batkiewicz, M, Bay, F, Bentham, SW, Berardi, V, Berger, BE, Berkman, S, Bertram, I, Beznosko, D, Bhadra, S, Blaszczyk, FDM, Blondel, A, Bojechko, C, Boyd, S, Brailsford, D, Bravar, A, Bronner, C, Brook-Roberge, DG, Buchanan, N, Calland, RG, Rodríguez, J Caravaca, Cartwright, SL, Castillo, R, Catanesi, MG, Cervera, A, Cherdack, D, Christodoulou, G, Clifton, A, Coleman, J, Coleman, SJ, Collazuol, G, Connolly, K, Cremonesi, L, Curioni, A, Dabrowska, A, Danko, I, Das, R, Davis, S, Day, M, de André, JPAM, de Perio, P, De Rosa, G, Dealtry, T, Dennis, S, Densham, C, Di Lodovico, F, Di Luise, S, Dobson, J, Drapier, O, Duboyski, T, Dufour, F, Dumarchez, J, Dytman, S, Dziewiecki, M, Dziomba, M, Emery, S, Ereditato, A, Escudero, L, Finch, AJ, Frank, E, Friend, M, Fujii, Y, Fukuda, Y, Furmanski, A, Galymov, V, Gaudin, A, Giffin, S, Giganti, C, Gilje, K, Golan, T, Gomez-Cadenas, JJ, Gonin, M, Grant, N, Gudin, D, Hadley, DR, Haesler, A, Haigh, MD, Hamilton, P, Hansen, D, Hara, T, Hartz, M, Hasegawa, T, Hastings, NC, Hayato, Y, Hearty, C, and Helmer, RL
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |Δm322|≈2.4×10-3 eV2. An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3±0.4(syst) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 (3.1σ), and a fit assuming νμ→νe oscillations with sinâ¡22θ23=1, δCP=0 and |Δm322|=2.4×10-3 eV2 yields sinâ¡22θ13=0.088-0.039+0. 049(stat+syst). © 2013 American Physical Society.
Published: 2013

10. Measurement of CP asymmetries in B0→KS0KS0KS0 decays

Author: Aubert, B, Bona, M, Boutigny, D, Karyotakis, Y, Lees, JP, Poireau, V, Prudent, X, Tisserand, V, Zghiche, A, Tico, J Garra, Grauges, E, Lopez, L, Palano, A, Eigen, G, Ofte, I, Stugu, B, Sun, L, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Pegna, D Lopes, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Tackmann, K, Wenzel, WA, del Amo Sanchez, P, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, 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, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, 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, and Flacco, CJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of the time-dependent CP-violating asymmetries in B0→KS0KS0KS0 decays based on 384×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We obtain the CP asymmetry parameters C=0.02±0.21±0.05 and S=-0.71±0.24±0.04, where the first uncertainties are statistical and the second systematic. These results are consistent with standard model expectations. © 2007 The American Physical Society.
Published: 2007

11. Search for the decay B+→K¯*0(892)K+

Author: Aubert, B, Bona, M, Boutigny, D, Karyotakis, Y, Lees, JP, Poireau, V, Prudent, X, Tisserand, V, Zghiche, A, Tico, J Garra, Grauges, E, Lopez, L, Palano, A, Eigen, G, Ofte, I, Stugu, B, Sun, L, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Pegna, D Lopes, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Tackmann, K, Wenzel, WA, del Amo Sanchez, P, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, 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, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, 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, and Flacco, CJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report on a search for the process B+→K̄*0(892)K+ using 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. From a signal yield of 25±13[stat]±7[syst] B+→K̄*0(892)(→K-π+)K+ events, we place an upper limit on the branching fraction B(B+→K̄ *0(892)K+) of 1.1×10-6, at the 90% confidence level. © 2007 The American Physical Society.
Published: 2007

12. Measurement of CP-violating asymmetries in B0→(ρπ)0 using a time-dependent Dalitz plot analysis

Author: Aubert, B, Bona, M, Boutigny, D, Karyotakis, Y, Lees, JP, Poireau, V, Prudent, X, Tisserand, V, Zghiche, A, Tico, J Garra, Grauges, E, Lopez, L, Palano, A, Eigen, G, Ofte, I, Stugu, B, Sun, L, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Pegna, D Lopes, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Tackmann, K, Wenzel, WA, del Amo Sanchez, P, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, 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, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, 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, and Flacco, CJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report a measurement of CP-violating asymmetries in B0→(ρπ) 0→π+π-π0 decays using a time-dependent Dalitz plot analysis. The results are obtained from a data sample of 375×106 Υ(4S) →BB̄ decays, collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure 26 coefficients of the bilinear form-factor terms occurring in the time-dependent decay rate of the B0 meson. We derive the physically relevant quantities from these coefficients. In particular, we measure a constraint on the angle α of the unitarity triangle. © 2007 The American Physical Society.
Published: 2007

13. Measurement of the B±→ρ±π0 branching fraction and direct CP asymmetry

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: We present improved measurements of the branching fraction and CP asymmetry for the process B±→ρ±π0. The data sample corresponding to 211fb-1 comprises 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The yield and CP asymmetry are measured using an extended maximum likelihood fitting method. The branching fraction and CP asymmetry are found to be B(B±→ρ±π0)=[10.2±1.4(stat)±0.9(syst)] ×10-6 and ACP(B±→ρ±π0)=-0.01±0.13(stat) ±0.02(syst). © 2007 The American Physical Society.
Published: 2007

14. Study of inclusive B- and B¯0 decays to flavor-tagged D, Ds, and Λc+

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report on a study of inclusive B- and B̄0 meson decays to D0X, D̄0X, D+X, D-X, Ds+X, Ds-X, Λc+X, Λ̄c-X, based on a sample of 231×106 BB̄ events recorded with the BABAR detector at the Υ(4S) resonance. Events are selected by completely reconstructing one B and searching for a reconstructed charm particle in the rest of the event. From the measured branching fractions of these decays, we infer the number of charm and anticharm particles per B̄ decay, separately for charged and neutral parents. We derive the total charm yield per B- decay, nc-=1.208±0. 023±0.040-0.029+0.035, and per B̄0 decay, nc0=1.203±0. 030±0.034-0.035+0.044 where the first uncertainty is statistical, the second is systematic, and the third reflects the charm branching-fraction uncertainties. We also present the charm momentum distributions measured in the B̄ rest frame. © 2007 The American Physical Society.
Published: 2007

15. Measurements of Λc+ branching fractions of Cabibbo-suppressed decay modes involving Λ and Σ0

Author: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Best, D, Breon, AB, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadel, RW, Kadyk, J, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, AE, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Yushkov, AN, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, and Buchanan, C
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We measure the branching ratios of the Cabibbo-suppressed decays Λc+→ΛK+ and Λc+→Σ0K+ relative to the Cabibbo-favored decay modes Λc+→Λπ+ and Λc+→Σ0π+ to be 0.044±0.004(stat.)±0.003(syst. ) and 0.038±0.005(stat.)±0.003(syst.), respectively. We set an upper limit on the branching ratio at the 90% confidence level for Λc+→ΛK+π+π- of 4.1×10-2 relative to Λc+→Λπ+, and for Λc+→Σ0K+π+π- of 2.0×10-2 relative to Λc+→Σ0π+. We also measure the branching fraction for the Cabibbo-favored mode Λc+→Σ0π+ relative to Λc+→Λπ+ to be 0.977±0.015(stat.) ±0.051(syst.). This analysis was performed using a data sample with an integrated luminosity of 125fb-1 collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. © 2007 The American Physical Society.
Published: 2007

16. Measurement of B decays to ϕKγ

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Pegna, D Lopes, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, and Hadavand, HK
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: We search for the decays B-→ K-γ and B̄0→ K̄0γ in a data sample of 228×106 BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector. We measure the branching fraction B(B-→ K-γ)=(3.5±0.6±0.4)×10-6 and set an upper limit B(B̄0→ K̄0γ)
Published: 2007

17. Search for the reactions e+e-→μ+τ- and e+e-→e+τ-

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Hart, AJ, Harrison, TJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report on a search for the lepton-flavor-violating processes e+e-→μ+τ- and e+e-→e+τ-. The data sample corresponds to an integrated luminosity of 211fb-1 recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy B Factory at a center-of-mass energy of s=10.58GeV. We find no evidence for a signal and set the 90% confidence level upper limits on the cross sections to be σμτ
Published: 2007

18. Branching fraction measurement of B¯0→D()+π- and B-→D()0π- and isospin analysis of B¯→D(*)π decays

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: Using 65×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B(B̄0→D+π- )=(2.55±0.05±0.16)×10-3, B(B̄0→D*+π-)=(2. 79±0.08±0.17)×10-3, B(B-→D0π-)=(4.90±0. 07±0.22)×10-3 and B(B-→D*0π-)=(5.52±0. 17±0.42)×10-3, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay B̄0→D(*) 0π0, the cosines of the strong phase difference δ between the I=1/2 and I=3/2 isospin amplitudes are determined to be cos δ=0.872-0.007-0.029+0. 008+0.031 for the B̄→Dπ process and cos δ=0.924-0.017-0. 054+0.019+0.063 for the B̄→D*π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the Dπ system. © 2007 The American Physical Society.
Published: 2007

19. Improved measurements of the branching fractions for B0→π+π- and B0→K+π-, and a search for B0→K+K-

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of the branching fractions for the charmless two-body decays B0→π+π- and B0→K+π-, and a search for the decay B0→K+K-. We include the effects of final-state radiation from the daughter mesons for the first time, and quote branching fractions for the inclusive processes B0→h+h′-nγ, where h and h′ are pions or kaons. The maximum value of the sum of the energies of the n undetected photons, Eγmax, is mode-dependent. Using a data sample of approximately 227×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure: B(B0→π+π-nγ;Eγmax =150MeV)=(5.1±0.4±0.2) ×10-6, B(B0→K+π-nγ;Eγmax =105MeV)=(18.1±0. 6±0.6)×10-6, B(B0→K+K-nγ;Eγmax =59MeV)
Published: 2007

20. Inclusive Λc+ production in e+e- annihilations at s=10.54 GeV and in Υ(4S) decays

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of the total production rates and momentum distributions of the charmed baryon Λc+ in e+e-→hadrons at a center-of-mass energy of 10.54 GeV and in Υ(4S) decays. In hadronic events at 10.54 GeV, charmed hadrons are almost exclusively leading particles in e+e-→cc̄ events, allowing direct studies of c-quark fragmentation. We measure a momentum distribution for Λc+ baryons that differs significantly from those measured previously for charmed mesons. Comparing with a number of models, we find none that can describe the distribution completely. We measure an average scaled momentum of xp=0.574±0.009 and a total rate of NΛcqq̄=0.057±0.002(exp.)±0.015(BF)Λc+ per hadronic event, where the experimental error is much smaller than that due to the branching fraction into the reconstructed decay mode, pK-π+. In Υ(4S) decays we measure a total rate of NΛcΥ=0.091±0. 006(exp.)±0.024(BF) per Υ(4S) decay, and find a much softer momentum distribution than expected from B decays into a Λc+ plus an antinucleon and one to three pions. © 2007 The American Physical Society.
Published: 2007

21. Observation of the exclusive reaction e+e-→ϕη at s=10.58 GeV

Author: Aubert, B, Bona, M, Boutigny, D, Karyotakis, Y, Lees, JP, Poireau, V, Prudent, X, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Pegna, D Lopes, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Tackmann, K, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Martin, EC, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Zhang, L, Hill, EJ, Paar, HP, Rahatlou, S, and Sharma, V
Subjects: Vaccine Related, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report the observation of e+e-→η near s=10.58GeV with 6.5σ significance in the K+K-γγ final state in a data sample of 224fb-1 collected by the BABAR experiment at the PEP-II e+e- storage rings. We measure the restricted radiation-corrected cross section to be σ(e+e-→η)=2.1±0.4(stat)±0.1(syst)fb within the range |cosθ*|
Published: 2006

22. Measurement of the absolute branching fractions B→Dπ, D*π, D**π with a missing mass method

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present branching fraction measurements of charged and neutral B decays to Dπ-, D*π-, and "D**"π- with a missing mass method, based on a sample of 231×106 Υ(4S)→BB̄ pairs collected by the BABAR detector at the PEP-II e+e- collider. One of the B mesons is fully reconstructed and the other one decays to a reconstructed charged π and a companion charmed meson identified by its recoil mass, inferred by kinematics. Here "D**" refers to the sum of all the nonstrange charm meson states with masses in the range 2.2-2.8GeV/c2. We measure the branching fractions: B(B-→D0π-)=(4.49±0.21±0.23) ×10-3, B(B-→D*0π-)=(5.13±0.22±0.28)×10- 3, B(B-→"D**0"π-)=(5.50±0.52±1.04) ×10-3, B(B̄0→D+π-)=(3.03±0.23±0.23)×10-3, B(B̄0→D*+π-)=(2.99±0.23±0.24)×10-3, B(B̄0→"D**+"π-)=(2.34±0.65±0. 88)×10-3, and their ratios. © 2006 The American Physical Society.
Published: 2006

23. Measurements of the B→D* form factors using the decay B¯0→D*+e-ν¯e

Author: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Best, DS, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadel, RW, Kadyk, J, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, and Foulkes, SD
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We measure the dependence of B̄0→D*+e-ν̄e on the decay angles and momentum transfer. The data sample consists of ∼86×106 BB̄-pairs accumulated on the Υ(4S) resonance by the BABAR detector at the asymmetric e+e- collider PEP-II. We specify the three form factors by two ratios R1 and R2, and by a single parameter ρ2 characterizing the polynomial representing hA1, the function which describes the momentum-transfer dependence of the form factor A1. We determine R1, R2, and ρ2 using an unbinned maximum likelihood fit to the full decay distribution. The results are R1=1.396±0.060±0.035±0.027, R2=0.885±0.040±0.022±0.013, and ρ2=1.145±0. 059±0.030±0.035. The stated uncertainties are the statistical from the data, statistical from the size of the Monte Carlo sample and the systematic uncertainty, respectively. In addition, based on this measurement, we give an updated value for the CKM matrix element |Vcb|. © 2006 The American Physical Society.
Published: 2006

24. Measurement of the branching fraction and time-dependent CP asymmetry in the decay B0→D+D-Ks0

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the decay B0→D*+D*-KS0 using (230±2) ×106BB̄ pairs collected by the BABAR detector at the PEP-II B factory. We measure a branching fraction B(B0→D*+D*-KS0)=(4. 4±0.4±0.7)×10-3 and find evidence for the decay B0→D*-Ds1+(2536) with a significance of 4.6σ. A time-dependent CP asymmetry analysis is also performed to study the possible resonant contributions to B0→D*+D*-KS0 and the sign of cos2β. Our measurement indicates that there is a sizable resonant contribution to the decay B0→D*+D*-KS0 from an unknown Ds1+ state with large width, and that cos2β is positive at the 94% confidence level under certain theoretical assumptions. © 2006 The American Physical Society.
Published: 2006

25. Structure at 2175 MeV in e+e-→ϕf0(980) observed via initial-state radiation

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the initial-state-radiation processes e+e-→K+K-π+π- γ and e+e-→K+K-π0π0γ using an integrated luminosity of 232fb-1 collected at the Υ(4S) mass with the BABAR detector at SLAC. Even though these reactions are dominated by intermediate states with excited kaons, we are able to study for the first time the cross section for e+e-→ (1020)f0(980) as a function of center-of-mass energy. We observe a structure near threshold consistent with a 1 - resonance with mass m=2.175±0. 010±0.015GeV/c2 and width Γ=58±16±20MeV. We observe no Y(4260) signal and set a limit of BY→ π+π-•ΓeeY
Published: 2006

26. Erratum: Dalitz-plot analysis of the decays B±→K±π∓π± [Phys. Rev. D 72, 072003 (2005)]

Author: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Breon, AB, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadel, RW, Kadyk, J, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Chevalier, N, Cottingham, WN, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, AE, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Yushkov, AN, Best, D, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, and Stoker, DP
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Published: 2006

27. Measurement of the ratio B(B+→Xeν)/B(B0→Xeν)

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Hart, AJ, Harrison, TJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, Zhang, L, Hadavand, HK, and Hill, EJ
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report measurements of the inclusive electron momentum spectra in decays of charged and neutral B mesons, and of the ratio of semileptonic branching fractions B(B+→Xeν) and B(B0→Xeν). These were performed on a sample of 231×106 BB̄ events recorded with the BABAR detector at the Υ(4S) resonance. Events are selected by fully reconstructing a hadronic decay of one B meson and identifying an electron among the decay products of the recoiling B̄ meson. We obtain B(B+→Xeν)/B(B0→Xeν)=1. 074±0.041(stat)±0.026(syst). © 2006 The American Physical Society.
Published: 2006

28. Precise branching ratio measurements of the decays D0→π-π+π0 and D0→K-K+π0 relative to the D0→K-π+π0 decay

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: Using 232fb-1 of e+e- collision data recorded by the BABAR experiment, we measure the rates of three-body Cabibbo-suppressed decays of the D0 meson relative to the Cabibbo-favored decay, D0→K-π+π0. We find: B(D0→π-π+π0)B(D0→K-π+π0)=(10.59±0.06±0. 13)×10-2 and B(D0→K-K+π0)B(D0→K-π+π0)=(2.37±0. 03±0.04)×10-2, where the errors are statistical and systematic, respectively. These measurements are significantly more precise than the current world average measurements. © 2006 The American Physical Society.
Published: 2006

29. Search for B+→X(3872)K+, X(3872)→J/ψγ

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: In a study of B+→J/ψγK+ decays, we find evidence for the radiative decay X(3872)→J/ψγ with a statistical significance of 3.4σ. We measure the product of branching fractions B(B+→X(3872)K+) •B(X(3872)→J/ψγ)=(3.3±1.0±0.3)×10-6, where the uncertainties are statistical and systematic, respectively. We also measure the branching fraction B(B+→χc1K+)=(4.9±0.2±0.4) ×10-4. These results are obtained from (287±3) million BB̄ decays collected at the Υ(4S) resonance with the BABAR detector at the PEP-II B Factory at SLAC. © 2006 The American Physical Society.
Published: 2006

30. Search for the decay of a B0 or B¯0 meson to K¯0K0 or K0K¯0

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present a search for the decay of a B0 or B̄0 meson to a K̄*0K0 or K*0K̄0 final state, using a sample of approximately 232×106 BB̄ events collected with the BABAR detector at the PEP-II asymmetric energy e+e- collider at SLAC. The measured branching fraction is B(B0→K̄*0K0)+B(B0→K*0K̄0)=(0.2-0.8- 0.3+0.9+0.1)×10-6. We obtain the following upper limit for the branching fraction at 90% confidence level: B(B0→K̄*0K0) +B(B0→K*0K̄0)
Published: 2006

31. B meson decays to ωK*, ωρ, ωω, ωϕ, and ωf0

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We describe searches for B meson decays to the charmless vector-vector final states ωK*, ωρ, ωω, and ω with 233×106 BB̄ pairs produced in e+e- BB̄ annihilation at s=10.58GeV. We also search for the vector-scalar B decay to ωf0. We measure the following branching fractions in units of 10-6: B(B0→ω K*0)=2.4±1.1±0.7(
Published: 2006

32. Measurements of the decays B0→D¯0pp¯, B0→D¯0pp¯, B0→D-pp¯π+, and B0→D-pp¯π+

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of branching fractions of B0 decays to multibody final states containing protons, based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We measure the branching fractions B(B0→D̄0pp̄)=(1. 13±0.06±0.08)×10-4, B(B0→D̄*0pp̄)=(1. 01±0.10±0.09)×10-4, B(B0→D-pp̄π+)=(3. 38±0.14±0.29)×10-4, and B(B0→D*-pp̄π+)= (4.81±0.22±0.44)×10-4 where the first error is statistical and the second systematic. We present a search for the charmed pentaquark state, Θc(3100) observed by H1 and put limits on the branching fraction B(B0→Θcp̄π+)×B(Θc→D*-p)
Published: 2006

33. Searches for B0 decays to ηK0, ηη, η′η′, ηϕ, and η′ϕ

Author: Aubert, B, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Hart, AJ, Harrison, TJ, Hawkes, CM, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Asgeirsson, DJ, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Liu, F, Long, O, Shen, BC, Wang, K, Zhang, L, and Hadavand, HK
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We search for B0 meson decays into two-body combinations of K0, η, η′, and mesons in 324×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We measure the following branching fractions (upper limits at 90% confidence level) in units of 10-6: B(B0→ηK0)=1.8-0.6+0.7±0.1(
Published: 2006

34. Branching fraction measurements of charged B decays to K+K+K-, K+π+K-, K+K+π- and K+π+π- final states

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Sherwood, DJ, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: Branching fraction and asymmetry measurements of charmless B+→K*+h1+h2- (where h1,2=K, π) decays are presented, using a data sample of 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. Using a maximum likelihood fit, the following branching fraction results were obtained: B(B+→K*+K+K-)=(36.2±3.3±3.6)×10-6 and B(B+→K*+π+π-)=(75.3±6.0±8.1)×10-6. Upper limits were set for B(B+→K*+π+K-)
Published: 2006

35. Measurement of B¯0→D()0K¯()0 branching fractions

Author: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Best, DS, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Buzykaev, A, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, and Gary, JW
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present a study of the decays B̄0→D(*)0K̄(*)0 using a sample of 226×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We report evidence for the decay of B0 and B̄0 mesons to the D*0KS0 final state with an average branching fraction B(B∼0→D*0K∼0) ≡(B(B̄0→D*0K̄0)+B(B0→D*0K0))/2=(3. 6±1.2±0.3)×10-5. Similarly, we measure B(B∼0→ D0K∼0)≡(B(B̄0→D0K̄0)+B(B0→D0K0))/2=(5.3±0. 7±0.3)×10-5 for the D0KS0 final state. We measure B(B̄0→D0K̄*0)=(4.0±0.7±0.3)×10-5 and set a 90% confidence level upper limit B(B̄0→D̄0K̄*0)
Published: 2006

36. Dalitz plot analysis of the decay B±→K±K±K∓

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We analyze the three-body charmless decay B ± →K ± K ± K using a sample of 226.0±2.5 million BB̄ pairs collected by the BABAR detector. We measure the total branching fraction and CP asymmetry to be B=(35.2±0.9±1.6) ×10 - 6 and A CP =(-1.7±2.6±1.5)%. We fit the Dalitz plot distribution using an isobar model and measure the magnitudes and phases of the decay coefficients. We find no evidence of CP violation for the individual components of the isobar model. The decay dynamics is dominated by the K + K - S-wave, for which we perform a partial-wave analysis in the region m(K + K - ) < 2GeV/c2. Significant production of the f 0 (980) resonance, and of a spin zero state near 1.55GeV/c2 are required in the isobar model description of the data. The partial-wave analysis supports this observation. © 2006 The American Physical Society.
Published: 2006

37. Study of B→D()Ds(J)() decays and measurement of Ds- and DsJ(2460)- branching fractions

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Down Syndrome, Intellectual and Developmental Disabilities (IDD), Brain Disorders, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present branching fraction measurements of 12 B meson decays of the form B→D( * )Ds(J)(*). The results are based on Υ(4S) decays in BB̄ pairs. One of the B mesons is fully reconstructed and the other decays to two charm mesons, of which one is reconstructed, and the mass and momentum of the other is inferred by kinematics. Combining these results with previous exclusive branching fraction measurements, we determine B(Ds-→ π - )=(4.62±0.36 stat. ±0.51 syst. )%, B(D sJ (2460) - →Ds*-π0)= (56±13 stat. ±9 syst. )% and B(D sJ (2460) - →Ds-γ)=(16±4 stat. ±3 syst. )%. © 2006 The American Physical Society.
Published: 2006

38. Study of the DsJ*(2317)+ and DsJ(2460)+ mesons in inclusive cc¯ production near s=10.6 GeV

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: A study of the DsJ*(2317)+ and DsJ(2460) + mesons in inclusive cc̄ production is presented using 232fb-1 of data collected by the BABAR experiment near √s=10.6GeV. Final states consisting of a Ds+ meson along with one or more π0, π±, or γ particles are considered. Estimates of the mass and limits on the width are provided for both mesons and for the Ds1(2536)+ meson. A search is also performed for neutral and doubly charged partners of the DsJ*(2317)+ meson. © 2006 The American Physical Society.
Published: 2006

39. Search for the decay B0→a1±ρ∓

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract: We present a search for the rare B-meson decay B0→a1±ρ with a1±→π + π - π ± . We use (110±1.2)×106Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We obtain an upper limit of 30×10 - 6(90%C.L.) for the branching fraction product B(B0→a1±ρ)B(a1±→π + π - π ± ), where we assume that the a1± decays exclusively to ρ0π ± . © 2006 The American Physical Society.
Published: 2006

40. Search for B meson decays to η′η′K

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We describe searches for decays of B mesons to the charmless final states η′η′K. The data consist of 228×106 BB̄ pairs produced in e+e- annihilation, collected with the BABAR detector at the Stanford Linear Accelerator Center. The 90% confidence level upper limits for the branching fractions are B(B0→η′η′K0)
Published: 2006

41. Measurement of branching fractions in radiative B decays to ηKγ and search for B decays to η′Kγ

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of the B→ηKγ branching fractions and upper limits for the B→η′Kγ branching fractions. For B+→ηK+γ we also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232×106 produced BB̄ pairs. The results for branching fractions and upper limits at 90% confidence level in units of 10-6 are: B(B0→ηK0γ)=11.3-2.6+2.8±0.6, B(B+→ηK+γ)=10.0±1.3±0.5, B(B0→η′ K0γ)
Published: 2006

42. Search for the decay B0→KS0KS0KL0

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, del Amo Sanchez, P, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, and Wang, K
Subjects: Clinical Research, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present the first search for the decay B0→KS0KS0KL0 using a data sample of 232×106 BB̄ pairs. We find no statistically significant evidence for the nonresonant component of this decay. Our central value for the branching fraction, assuming the true Dalitz distribution is uniform and excluding the resonance, is B(B0→KS0KS0KL0)=(2.4-2.5+2.7±0.6) ×10-6 where the errors are statistical and systematic, respectively. We set a single-sided Bayesian upper limit of B(B0→KS0KS0KL0)
Published: 2006

43. Dalitz plot analysis of the decay B±→K±K±K

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, YG, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, and Long, O
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We analyze the three-body charmless decay B ± →K ± K ± K using a sample of 226.0±2.5 million BB̄ pairs collected by the BABAR detector. We measure the total branching fraction and CP asymmetry to be B=(35.2±0.9±1.6) ×10 - 6 and A CP =(-1.7±2.6±1.5)%. We fit the Dalitz plot distribution using an isobar model and measure the magnitudes and phases of the decay coefficients. We find no evidence of CP violation for the individual components of the isobar model. The decay dynamics is dominated by the K + K - S-wave, for which we perform a partial-wave analysis in the region m(K + K - ) < 2GeV/c2. Significant production of the f 0 (980) resonance, and of a spin zero state near 1.55GeV/c2 are required in the isobar model description of the data. The partial-wave analysis supports this observation. © 2006 The American Physical Society.
Published: 2006

44. Search for the decay B0→a1±ρ

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, YG, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: We present a search for the rare B-meson decay B0→a1±ρ with a1±→π + π - π ± . We use (110±1.2)×106Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We obtain an upper limit of 30×10 - 6(90%C.L.) for the branching fraction product B(B0→a1±ρ)B(a1±→π + π - π ± ), where we assume that the a1± decays exclusively to ρ0π ± . © 2006 The American Physical Society.
Published: 2006

45. Study of B→D()Ds(J)() decays and measurement of Ds- and DsJ(2460)-branching fractions

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, YG, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present branching fraction measurements of 12 B meson decays of the form B→D( * )Ds(J)(*). The results are based on Υ(4S) decays in BB̄ pairs. One of the B mesons is fully reconstructed and the other decays to two charm mesons, of which one is reconstructed, and the mass and momentum of the other is inferred by kinematics. Combining these results with previous exclusive branching fraction measurements, we determine B(Ds-→ π - )=(4.62±0.36 stat. ±0.51 syst. )%, B(D sJ (2460) - →Ds*-π0)= (56±13 stat. ±9 syst. )% and B(D sJ (2460) - →Ds-γ)=(16±4 stat. ±3 syst. )%. © 2006 The American Physical Society.
Published: 2006

46. Study of the DsJ*(2317)+ and DsJ(2460) + mesons in inclusive cc̄ production near √s=10.6GeV

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, YG, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: A study of the DsJ*(2317)+ and DsJ(2460) + mesons in inclusive cc̄ production is presented using 232fb-1 of data collected by the BABAR experiment near √s=10.6GeV. Final states consisting of a Ds+ meson along with one or more π0, π±, or γ particles are considered. Estimates of the mass and limits on the width are provided for both mesons and for the Ds1(2536)+ meson. A search is also performed for neutral and doubly charged partners of the DsJ*(2317)+ meson. © 2006 The American Physical Society.
Published: 2006

47. Measurement of the D+→π+π0 and D+→K+π0 branching fractions

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, Shen, BC, Wang, K, and Zhang, L
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of the branching fractions for the Cabbibo suppressed decays D+→π+π0 and D+→K+π0 based on a data sample corresponding to an integrated luminosity of 124.3fb-1. The data were taken with the BABAR detector at the PEP-II B Factory operating on and near the Υ(4S) resonance. We find B(D+→π+π0)=(1.25±0.10±0. 09±0.04)×10-3 and B(D+→K+π0)=(2.52±0.47±0. 25±0.08)×10-4, where the first uncertainty is statistical, the second systematic and the last error is due to the uncertainties in the absolute branching fraction scale for D+ mesons. This represents the first observation of the doubly Cabibbo-suppressed D+→K+π0 decay mode and a new measurement of the D+→π+π0 branching fraction. © 2006 The American Physical Society.
Published: 2006

48. Measurement of the η and η′ transition form factors at q2=112 GeV2

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Prevention, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report a study of the processes e+e-→ηγ and e+e-→η′γ at a center-of-mass energy of 10.58 GeV, using a 232fb-1 data sample collected with the BABAR detector at the PEP-II collider at SLAC. We observe 20-5+6ηγ and 50-7+8η′γ events over small backgrounds, and measure the cross sections σ(e+e- →ηγ)=4.5-1.1+1.2±0.3fb and σ(e+e- →η′γ)=5.4±0.8±0.3fb. The corresponding transition form factors at q2=112GeV2 are q2|Fη(q2)|=0.229±0. 030±0.008GeV, and q2|Fη′(q2)|=0.251±0.019±0. 008GeV, respectively. © 2006 The American Physical Society.
Published: 2006

49. Measurements of CP-violating asymmetries and branching fractions in B decays to ωK and ωπ

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present measurements of CP-violating asymmetries and branching fractions for the decays B+→ωπ+, B+→ωK+, and B0→ωK0. The data sample corresponds to 232×106 BB̄ pairs produced by e+e- annihilation at the Υ(4S) resonance. For the decay B0→ωKS0, we measure the time-dependent CP-violation parameters S=0.51-0.39+0.35±0.02, and C=-0.55-0.26+0.28±0.03. We also measure the branching fractions, in units of 10-6, B(B+→ωπ+)=6.1±0.7±0.4, B(B+→ωK+)=6.1±0.6±0.4, and B(B0→ωK0)=6. 2±1.0±0.4, and charge asymmetries Ach(B+→ωπ+)=-0. 01±0.10±0.01 and Ach(B+→ωK+)=0.05±0.09±0. 01. © 2006 The American Physical Society.
Published: 2006

50. Search for B+→ϕπ+ and B0→ϕπ0 decays

Author: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Groysman, Y, Jacobsen, RG, Kadyk, JA, Kerth, LT, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Cottingham, WN, Walker, D, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Best, DS, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK, Roethel, W, Stoker, DP, Abachi, S, Buchanan, C, Foulkes, SD, Gary, JW, Long, O, and Shen, BC
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: A search has been made for the decays B+→ π+ and B0→ π0 in a data sample of approximately 232×106 BB̄ pairs recorded at the Υ(4S) resonance with the BABAR detector at the PEP-II B-meson Factory at SLAC. No significant signals have been observed, and therefore upper limits have been set on the branching fractions: B(B+→ π+)
Published: 2006

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