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131 results on '"Kobel MJ"'

1. Erratum: Measurement of the absolute branching fractions for Ds- → - νt¯ion of the decay constant fDs (Physical Review D - Particles, Fields, Gravitation and Cosmology (2010) 82 (091103))

Author: Del Amo Sanchez, P, Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Battaglia, M, Brown, DN, Hooberman, B, Kerth, LT, Kolomensky, YG, Lynch, G, Osipenkov, IL, Tanabe, T, Hawkes, CM, Watson, AT, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Randle-Conde, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, C, Eisner, AM, Heusch, CA, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Winstrom, LO, Cheng, CH, Doll, DA, Echenard, B, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Mancinelli, G, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Jasper, H, Karbach, TM, Merkel, J, Petzold, A, Spaan, B, Wacker, K, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, and Clark, PJ
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Published: 2015

2. Erratum: Branching fraction measurements of the color-suppressed decays B̄0 to D()0π0, D ()0η, D()0ω, and D ()0η′ and measurement of the polarization in the decay B̄0→D*0ω (Physical Review D (2011) 84 (112007))

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Prudent, X, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Published: 2013

3. Erratum: Branching fraction measurements of the color-suppressed decays B¯0 to D()0π0, D()0η, D()0ω, and D()0η′ and measurement of the polarization in the decay B¯0→D*0ω [Phys. Rev. D 84, 112007 (2011)]

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Prudent, X, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Published: 2013

4. Study of B̄→X ulν̄ decays in BB̄ events tagged by a fully reconstructed B-meson decay and determination of

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Tackmann, K, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Petrella, A, Piemontese, L, Santoro, V, and Baldini-Ferroli, R
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report measurements of partial branching fractions for inclusive charmless semileptonic B decays B̄→X ulν̄ and the determination of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |V ub|. The analysis is based on a sample of 467×106 Υ(4S)→BB̄ decays recorded with the BABAR detector at the PEP-II e +e - storage rings. We select events in which the decay of one of the B mesons is fully reconstructed and an electron or a muon signals the semileptonic decay of the other B meson. We measure partial branching fractions ΔB in several restricted regions of phase space and determine the CKM element |V ub| based on different QCD predictions. For decays with a charged lepton momentum pl*>1.0GeV in the B meson rest frame, we obtain ΔB=(1.80±0.13 stat±0.15 sys±0.02 theo)×10 -3 from a fit to the two-dimensional M X-q2 distribution. Here, M X refers to the invariant mass of the final state hadron X and q2 is the invariant mass squared of the charged lepton and neutrino. From this measurement we extract |V ub|=(4.33±0.24 exp±0.15 theo) ×10 -3 as the arithmetic average of four results obtained from four different QCD predictions of the partial rate. We separately determine partial branching fractions for B ̄0 and B - decays and derive a limit on the isospin breaking in B̄→X ulν̄ decays. © 2012 American Physical Society.
Published: 2012

5. Study of B¯→Xuℓν¯ decays in BB¯ events tagged by a fully reconstructed B-meson decay and determination of |Vub|

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Tackmann, K, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Petrella, A, Piemontese, L, Santoro, V, and Baldini-Ferroli, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report measurements of partial branching fractions for inclusive charmless semileptonic B decays B̄→X ulν̄ and the determination of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |V ub|. The analysis is based on a sample of 467×106 Υ(4S)→BB̄ decays recorded with the BABAR detector at the PEP-II e +e - storage rings. We select events in which the decay of one of the B mesons is fully reconstructed and an electron or a muon signals the semileptonic decay of the other B meson. We measure partial branching fractions ΔB in several restricted regions of phase space and determine the CKM element |V ub| based on different QCD predictions. For decays with a charged lepton momentum pl*>1.0GeV in the B meson rest frame, we obtain ΔB=(1.80±0.13 stat±0.15 sys±0.02 theo)×10 -3 from a fit to the two-dimensional M X-q2 distribution. Here, M X refers to the invariant mass of the final state hadron X and q2 is the invariant mass squared of the charged lepton and neutrino. From this measurement we extract |V ub|=(4.33±0.24 exp±0.15 theo) ×10 -3 as the arithmetic average of four results obtained from four different QCD predictions of the partial rate. We separately determine partial branching fractions for B ̄0 and B - decays and derive a limit on the isospin breaking in B̄→X ulν̄ decays. © 2012 American Physical Society.
Published: 2012

6. Cross sections for the reactions e +e -→K +K -π +π -, K +K -π0π0, and K +K -K +K - measured using initial-state radiation events

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We study the processes e +e -→K +K -π +π -γ, K +K -π0π0γ, and K +K -K +K -γ, where the photon is radiated from the initial state. About 84000, 8000, and 4200 fully reconstructed events, respectively, are selected from 454fb -1 of BABAR data. The invariant mass of the hadronic final state defines the e +e - center-of-mass energy, so that the K +K -π +π -γ data can be compared with direct measurements of the e +e -→K +K -π +π - reaction. No direct measurements exist for the e +e -→K +K -π0π0 or e +e -→K +K -K +K - reactions, and we present an update of our previous result based on a data sample that is twice as large. Studying the structure of these events, we find contributions from a number of intermediate states and extract their cross sections. In particular, we perform a more detailed study of the e +e -→φ(1020)ππγ reaction and confirm the presence of the Y(2175) resonance in the φ(1020)f 0(980) and K +K -f 0(980) modes. In the charmonium region, we observe the J/ψ in all three final states and in several intermediate states, as well as the ψ(2S) in some modes, and measure the corresponding products of branching fraction and electron width. © 2012 American Physical Society.
Published: 2012

7. Search for the decay modes B±→h±τ l

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present a search for the lepton flavor violating decay modes B ±→h ±τ l (h=K, π; l=e, μ) using the BABAR data sample, which corresponds to 472×106 BB̄ pairs. The search uses events where one B meson is fully reconstructed in one of several hadronic final states. Using the momenta of the reconstructed B, h, and l candidates, we are able to fully determine the τ four-momentum. The resulting τ candidate mass is our main discriminant against combinatorial background. We see no evidence for B ±→h ±τ l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10 -5. © 2012 American Physical Society.
Published: 2012

8. Search for the decay modes B±→h±τℓ

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present a search for the lepton flavor violating decay modes B ±→h ±τ l (h=K, π; l=e, μ) using the BABAR data sample, which corresponds to 472×106 BB̄ pairs. The search uses events where one B meson is fully reconstructed in one of several hadronic final states. Using the momenta of the reconstructed B, h, and l candidates, we are able to fully determine the τ four-momentum. The resulting τ candidate mass is our main discriminant against combinatorial background. We see no evidence for B ±→h ±τ l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10 -5. © 2012 American Physical Society.
Published: 2012

9. Cross sections for the reactions e+e-→K+K-π+π-, K+K-π0π0, and K+K-K+K- measured using initial-state radiation events

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the processes e +e -→K +K -π +π -γ, K +K -π0π0γ, and K +K -K +K -γ, where the photon is radiated from the initial state. About 84000, 8000, and 4200 fully reconstructed events, respectively, are selected from 454fb -1 of BABAR data. The invariant mass of the hadronic final state defines the e +e - center-of-mass energy, so that the K +K -π +π -γ data can be compared with direct measurements of the e +e -→K +K -π +π - reaction. No direct measurements exist for the e +e -→K +K -π0π0 or e +e -→K +K -K +K - reactions, and we present an update of our previous result based on a data sample that is twice as large. Studying the structure of these events, we find contributions from a number of intermediate states and extract their cross sections. In particular, we perform a more detailed study of the e +e -→φ(1020)ππγ reaction and confirm the presence of the Y(2175) resonance in the φ(1020)f 0(980) and K +K -f 0(980) modes. In the charmonium region, we observe the J/ψ in all three final states and in several intermediate states, as well as the ψ(2S) in some modes, and measure the corresponding products of branching fraction and electron width. © 2012 American Physical Society.
Published: 2012

10. Study of CP violation in Dalitz-plot analyses of B0→K+K-KS0, B+→K+K-K+, and B+→KS0KS0K+

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We perform amplitude analyses of the decays B0→K +K -KS0, B +→K +K -K +, and B +→KS0KS0K +, and measure CP-violating parameters and partial branching fractions. The results are based on a data sample of approximately 470×106 BB̄ decays, collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the SLAC National Accelerator Laboratory. For B +→K +K -K +, we find a direct CP asymmetry in B +→(1020)K + of A CP=(12.8±4.4±1.3)%, which differs from zero by 2.8σ. For B0→K +K -KS0, we measure the CP-violating phase β eff((1020)KS0)=(21±6±2)°. For B +→KS0KS0K +, we measure an overall direct CP asymmetry of A CP=(4-5+4±2)%. We also perform an angular-moment analysis of the three channels and determine that the f X(1500) state can be described well by the sum of the resonances f 0(1500), f2′(1525), and f 0(1710). © 2012 American Physical Society.
Published: 2012

11. Initial-state radiation measurement of the e +e -→π +π -π +π - cross section

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the process e +e -→π +π -π +π -γ, with a photon emitted from the initial-state electron or positron, using 454.3fb -1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260000 signal events. We use these data to extract the nonradiative σ(e +e -→π +π -π +π -) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data. © 2012 American Physical Society.
Published: 2012

12. Study of CP violation in Dalitz-plot analyses of B0→K+K-KS0, B+→K+K-K+, and B+→KS0KS0K+

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We perform amplitude analyses of the decays B0→K +K -KS0, B +→K +K -K +, and B +→KS0KS0K +, and measure CP-violating parameters and partial branching fractions. The results are based on a data sample of approximately 470×106 BB̄ decays, collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the SLAC National Accelerator Laboratory. For B +→K +K -K +, we find a direct CP asymmetry in B +→(1020)K + of A CP=(12.8±4.4±1.3)%, which differs from zero by 2.8σ. For B0→K +K -KS0, we measure the CP-violating phase β eff((1020)KS0)=(21±6±2)°. For B +→KS0KS0K +, we measure an overall direct CP asymmetry of A CP=(4-5+4±2)%. We also perform an angular-moment analysis of the three channels and determine that the f X(1500) state can be described well by the sum of the resonances f 0(1500), f2′(1525), and f 0(1710). © 2012 American Physical Society.
Published: 2012

13. Initial-state radiation measurement of the e+e-→π+π-π+π- cross section

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the process e +e -→π +π -π +π -γ, with a photon emitted from the initial-state electron or positron, using 454.3fb -1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260000 signal events. We use these data to extract the nonradiative σ(e +e -→π +π -π +π -) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data. © 2012 American Physical Society.
Published: 2012

14. Observation and study of the baryonic B-meson decays B→D

Author: Del Amo Sanchez, P, Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Battaglia, M, Brown, DN, Hooberman, B, Kerth, LT, Kolomensky, YG, Lynch, G, Osipenkov, IL, Tanabe, T, Hawkes, CM, Watson, AT, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Randle-Conde, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Flanigan, JM, Hong, TM, Kovalskyi, D, Richman, JD, West, C, Eisner, AM, Heusch, CA, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Winstrom, LO, Cheng, CH, Doll, DA, Echenard, B, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Mancinelli, G, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Jasper, H, Karbach, TM, Merkel, J, Petzold, A, Spaan, B, Wacker, K, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, and Verderi, M
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present results for B-meson decay modes involving a charm meson, protons, and pions using 455×106 BB̄ pairs recorded by the BaBar detector at the SLAC PEP-II asymmetric-energy e +e - collider. The branching fractions are measured for the following ten decays: B ̄0→D0pp̄, B ̄0→D *0pp̄, B ̄0→D +pp̄π -, B ̄0→D *+pp̄π -, B -→D0pp̄π -, B -→D *0pp̄π -, B ̄0→D0pp̄π -π +, B ̄0→D *0pp̄π -π +, B -→D +pp̄π -π -, and B -→D *+pp̄π -π -. The four B - and the two five-body B ̄0 modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(pp̄) and M(D(*)0p) invariant-mass distributions show enhancements near threshold values. In the four-body mode B ̄0→D +pp̄π -, the M(pπ -) distribution shows a narrow structure of unknown origin near 1.5GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions. © 2012 American Physical Society.
Published: 2012

15. Search for Low-Mass Dark-Sector Higgs Bosons

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: BABAR Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract: Recent astrophysical and terrestrial experiments have motivated the proposal of a dark sector with GeV-scale gauge boson force carriers and new Higgs bosons. We present a search for a dark Higgs boson using 516 fb(-1) of data collected with the BABAR detector. We do not observe a significant signal and we set 90% confidence level upper limits on the product of the standard model-dark-sector mixing angle and the dark-sector coupling constant.
Published: 2012

16. Search for low-mass dark-sector Higgs bosons.

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, and Patteri, P
Subjects: BABAR Collaboration, General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract: Recent astrophysical and terrestrial experiments have motivated the proposal of a dark sector with GeV-scale gauge boson force carriers and new Higgs bosons. We present a search for a dark Higgs boson using 516 fb(-1) of data collected with the BABAR detector. We do not observe a significant signal and we set 90% confidence level upper limits on the product of the standard model-dark-sector mixing angle and the dark-sector coupling constant.
Published: 2012

17. Search for the decay D0→γγ and measurement of the branching fraction for D0→π0π0

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We search for the rare decay of the D0 meson to two photons, D0→γγ, and present a measurement of the branching fraction for a D0 meson decaying to two neutral pions, B(D0→π0π0). The data sample analyzed corresponds to an integrated luminosity of 470.5fb -1 collected by the BABAR detector at the PEP-II asymmetric-energy e +e - collider at SLAC. We place an upper limit on the branching fraction, B(D0→γγ)
Published: 2012

18. Erratum: Search for CP violation in the decay τ̄ → π̄ K sO(≥Oπ O)V τ (Physical Review D - Particles, Fields, Gravitation and Cosmology (2012) 85 (031102R))

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Published: 2012

19. Search for the decay D0→γγ and measurement of the branching fraction for D0→π0π0

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We search for the rare decay of the D0 meson to two photons, D0→γγ, and present a measurement of the branching fraction for a D0 meson decaying to two neutral pions, B(D0→π0π0). The data sample analyzed corresponds to an integrated luminosity of 470.5fb -1 collected by the BABAR detector at the PEP-II asymmetric-energy e +e - collider at SLAC. We place an upper limit on the branching fraction, B(D0→γγ)
Published: 2012

20. Observation and study of the baryonic B-meson decays B→D(*)pp¯(π)(π)

Author: del Amo Sanchez, P, Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Battaglia, M, Brown, DN, Hooberman, B, Kerth, LT, Kolomensky, Yu G, Lynch, G, Osipenkov, IL, Tanabe, T, Hawkes, CM, Watson, AT, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Randle-Conde, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Flanigan, JM, Hong, TM, Kovalskyi, D, Richman, JD, West, C, Eisner, AM, Heusch, CA, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Winstrom, LO, Cheng, CH, Doll, DA, Echenard, B, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Mancinelli, G, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Jasper, H, Karbach, TM, Merkel, J, Petzold, A, Spaan, B, Wacker, K, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, and Verderi, M
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present results for B-meson decay modes involving a charm meson, protons, and pions using 455×106 BB̄ pairs recorded by the BaBar detector at the SLAC PEP-II asymmetric-energy e +e - collider. The branching fractions are measured for the following ten decays: B ̄0→D0pp̄, B ̄0→D *0pp̄, B ̄0→D +pp̄π -, B ̄0→D *+pp̄π -, B -→D0pp̄π -, B -→D *0pp̄π -, B ̄0→D0pp̄π -π +, B ̄0→D *0pp̄π -π +, B -→D +pp̄π -π -, and B -→D *+pp̄π -π -. The four B - and the two five-body B ̄0 modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(pp̄) and M(D(*)0p) invariant-mass distributions show enhancements near threshold values. In the four-body mode B ̄0→D +pp̄π -, the M(pπ -) distribution shows a narrow structure of unknown origin near 1.5GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions. © 2012 American Physical Society.
Published: 2012

21. Erratum: Search for CP violation in the decay τ-→π-Ks0(≥Oπ0)ντ [Phys. Rev. D 85, 031102(R) (2012)]

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Published: 2012

22. B0 meson decays to ρ0K 0, f 0K 0, and ρ -K +, including higher K resonances

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, Finocchiaro, G, and Nicolaci, M
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present branching fraction measurements for the decays B0→ρ0K *0, B0→f 0K *0, and B0→ρ -K *+, where K * is an S-wave (Kπ)0* or a K *(892) meson; we also measure B0→f 0K2*(1430)0. For the K *(892) channels, we report measurements of longitudinal polarization fractions (for ρ final states) and direct CP violation asymmetries. These results are obtained from a sample of (471.0±2.8) ×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at the SLAC National Accelerator Laboratory. We observe ρ0K *(892)0, ρ0(Kπ)0*0, f 0K *(892)0, and ρ -K *(892) + with greater than 5σ significance, including systematics. We report first evidence for f 0(Kπ)0*0 and f 0K2*(1430)0, and place an upper limit on ρ -(Kπ)0*+. Our results in the K *(892) channels are consistent with no direct CP violation. © 2012 American Physical Society.
Published: 2012

23. B0 meson decays to ρ0K0, f0K0, and ρ-K+, including higher K resonances

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, and Nicolaci, M
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present branching fraction measurements for the decays B0→ρ0K *0, B0→f 0K *0, and B0→ρ -K *+, where K * is an S-wave (Kπ)0* or a K *(892) meson; we also measure B0→f 0K2*(1430)0. For the K *(892) channels, we report measurements of longitudinal polarization fractions (for ρ final states) and direct CP violation asymmetries. These results are obtained from a sample of (471.0±2.8) ×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at the SLAC National Accelerator Laboratory. We observe ρ0K *(892)0, ρ0(Kπ)0*0, f 0K *(892)0, and ρ -K *(892) + with greater than 5σ significance, including systematics. We report first evidence for f 0(Kπ)0*0 and f 0K2*(1430)0, and place an upper limit on ρ -(Kπ)0*+. Our results in the K *(892) channels are consistent with no direct CP violation. © 2012 American Physical Society.
Published: 2012

24. Amplitude analysis and measurement of the time-dependent CP asymmetry of B0→KS0KS0KS0 decays

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process B0→KS0KS0KS0 obtained using 468×106BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B0and B ̄0 decays. We measure the total inclusive branching fraction B(B0→KS0KS0KS0)=(6.19±0. 48±0.15±0.12)×10 -6, where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f 0(980), f 0(1710), and f 2(2010). Their respective product branching fractions are measured to be (2.70-1.19+1.25±0.36±1.17)×10 -6, (0.50-0.24+0.46±0.04±0.10)×10 -6, and (0.54-0.20+0.21±0.03±0.52)×10 -6. Additionally, we determine the mixing-induced CP-violation parameters to be S=-0.94-0.21+0. 24±0.06 and C=-0.17±0.18±0.04, where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation. For the first time, we report evidence of CP violation in B0→KS0KS0KS0 decays; CP conservation is excluded at 3.8 standard deviations including systematic uncertainties. © 2012 American Physical Society.
Published: 2012

25. Search for the Z 1(4050) + and Z 2(4250) + states in B ̄0→χ c1K -π + and B +→χ c1KS0π +

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, and Finocchiaro, G
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We search for the Z 1(4050) + and Z 2(4250) + states, reported by the Belle Collaboration, decaying to χ c1π + in the decays B ̄0→χ c1K -π + and B +→χ c1KS0π + where χ c1→J/ψγ. The data were collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e +e - collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429fb -1. In this analysis, we model the background-subtracted, efficiency-corrected χ c1π + mass distribution using the Kπ mass distribution and the corresponding normalized Kπ Legendre-polynomial moments, and then test the need for the inclusion of resonant structures in the description of the χ c1π + mass distribution. No evidence is found for the Z 1(4050) + and Z 2(4250) + resonances, and 90% confidence level upper limits on the branching fractions are reported for the corresponding B-meson decay modes. © 2012 American Physical Society.
Published: 2012

26. Search for the Z1(4050)+ and Z2(4250)+ states in B¯0→χc1K-π+ and B+→χc1KS0π+

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, and Finocchiaro, G
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We search for the Z 1(4050) + and Z 2(4250) + states, reported by the Belle Collaboration, decaying to χ c1π + in the decays B ̄0→χ c1K -π + and B +→χ c1KS0π + where χ c1→J/ψγ. The data were collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e +e - collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429fb -1. In this analysis, we model the background-subtracted, efficiency-corrected χ c1π + mass distribution using the Kπ mass distribution and the corresponding normalized Kπ Legendre-polynomial moments, and then test the need for the inclusion of resonant structures in the description of the χ c1π + mass distribution. No evidence is found for the Z 1(4050) + and Z 2(4250) + resonances, and 90% confidence level upper limits on the branching fractions are reported for the corresponding B-meson decay modes. © 2012 American Physical Society.
Published: 2012

27. Amplitude analysis and measurement of the time-dependent CP asymmetry of B0→KS0KS0KS0 decays

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process B0→KS0KS0KS0 obtained using 468×106BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B0and B ̄0 decays. We measure the total inclusive branching fraction B(B0→KS0KS0KS0)=(6.19±0. 48±0.15±0.12)×10 -6, where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f 0(980), f 0(1710), and f 2(2010). Their respective product branching fractions are measured to be (2.70-1.19+1.25±0.36±1.17)×10 -6, (0.50-0.24+0.46±0.04±0.10)×10 -6, and (0.54-0.20+0.21±0.03±0.52)×10 -6. Additionally, we determine the mixing-induced CP-violation parameters to be S=-0.94-0.21+0. 24±0.06 and C=-0.17±0.18±0.04, where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation. For the first time, we report evidence of CP violation in B0→KS0KS0KS0 decays; CP conservation is excluded at 3.8 standard deviations including systematic uncertainties. © 2012 American Physical Society.
Published: 2012

28. Erratum: Observation of the baryonic B decay B ̄0→Λc+Λ̄K - (Physical Review D - Particles, Fields, Gravitation and Cosmology (2012) 85:3 (039903))

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, and Finocchiaro, G
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Published: 2012

29. Search for CP violation in the decay τ -→π -KS0(0π0)ν τ

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report a search for CP violation in the decay τ -→π -KS0(0π0)ν τ using a data set of 437×106 τ-lepton pairs, corresponding to an integrated luminosity of 476fb -1, collected with the BABAR detector at the PEP-II asymmetric-energy e +e - storage rings. The CP-violating decay-rate asymmetry is determined to be (-0.36±0. 23±0.11)% approximately 2.8 standard deviations from the standard model prediction of (0.36±0.01)%. © 2012 American Physical Society.
Published: 2012

30. Publisher’s Note: Observation of the baryonic B decay B¯0→Λc+Λ¯K- [Phys. Rev. D 84, 071102(R) (2011)]

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, and Finocchiaro, G
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Published: 2012

31. Search for CP violation in the decay τ-→π-Ks0(≥Oπ0)ντ

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report a search for CP violation in the decay τ -→π -KS0(0π0)ν τ using a data set of 437×106 τ-lepton pairs, corresponding to an integrated luminosity of 476fb -1, collected with the BABAR detector at the PEP-II asymmetric-energy e +e - storage rings. The CP-violating decay-rate asymmetry is determined to be (-0.36±0. 23±0.11)% approximately 2.8 standard deviations from the standard model prediction of (0.36±0.01)%. © 2012 American Physical Society.
Published: 2012

32. Search for B̄→Λc+X -ν ̄ decays in events with a fully reconstructed B meson

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Tanabe, T, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present a search for semileptonic B decays to the charmed baryon Λc+ based on 420fb -1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e +e - storage rings. By fully reconstructing the recoiling B in a hadronic decay mode, we reduce non-B backgrounds and determine the flavor of the signal B. We statistically correct the flavor for the effect of the B0 mixing. We obtain a 90% confidence level upper limit of B(B̄→Λc+X -ν ̄)/B(B̄→Λc+X)
Published: 2012

33. Measurement of the semileptonic branching fraction of the B s meson

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report a measurement of the inclusive semileptonic branching fraction of the B s meson using data collected with the BABAR detector in the center-of-mass energy region above the Υ(4S) resonance. We use the inclusive yield of mesons and the yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B s mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B s meson is determined to be B(B s→νX)=9.5-2.0+2.5(stat)-1.9+1.1(syst)%, where indicates the average of e and μ. © 2012 American Physical Society.
Published: 2012

34. Search for B¯→Λc+Xℓ-ν¯ℓ decays in events with a fully reconstructed B meson

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Tanabe, T, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present a search for semileptonic B decays to the charmed baryon Λc+ based on 420fb -1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e +e - storage rings. By fully reconstructing the recoiling B in a hadronic decay mode, we reduce non-B backgrounds and determine the flavor of the signal B. We statistically correct the flavor for the effect of the B0 mixing. We obtain a 90% confidence level upper limit of B(B̄→Λc+X -ν ̄)/B(B̄→Λc+X)
Published: 2012

35. Measurement of the semileptonic branching fraction of the Bs meson

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report a measurement of the inclusive semileptonic branching fraction of the B s meson using data collected with the BABAR detector in the center-of-mass energy region above the Υ(4S) resonance. We use the inclusive yield of mesons and the yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B s mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B s meson is determined to be B(B s→νX)=9.5-2.0+2.5(stat)-1.9+1.1(syst)%, where indicates the average of e and μ. © 2012 American Physical Society.
Published: 2012

36. Branching fraction measurements of the color-suppressed decays B ̄0 to D( )0π0, D( )0η, D( )0ω, and D( )0η′ and measurement of the polarization in the decay B ̄0→D *0ω

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Prudent, X, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report updated branching fraction measurements of the color-suppressed decays B ̄0→D0π0, D *0π0, D0η, D *0η, D0ω, D *0ω, D0η ′, and D *0η ′. We measure the branching fractions (×10 -4): B(B ̄0→D0π0)=2.69±0.09±0.13, B(B ̄0→D *0π0)=3.05±0.14±0.28, B(B ̄0→D0η)=2.53±0.09±0.11, B(B ̄0→D *0η)=2.69±0.14±0.23, B(B ̄0→D0ω)=2.57±0.11±0.14, B(B ̄0→D *0ω)=4.55±0.24±0. 39, B(B ̄0→D0η ′)=1.48±0. 13±0.07, and B(B ̄0→D *0η ′)=1.49±0.22±0.15. We also present the first measurement of the longitudinal polarization fraction of the decay channel D *0ω, f L=(66.5±4.7±1.5)%. In the above, the first uncertainty is statistical and the second is systematic. The results are based on a sample of (454±5)×106 BB̄ pairs collected at the Υ(4S) resonance, with the BABAR detector at the PEP-II storage rings at SLAC. The measurements are the most precise determinations of these quantities from a single experiment. They are compared to theoretical predictions obtained by factorization, Soft Collinear Effective Theory (SCET) and perturbative QCD (pQCD). We find that the presence of final state interactions is favored and the measurements are in better agreement with SCET than with pQCD. © 2011 American Physical Society.
Published: 2011

37. Branching fraction measurements of the color-suppressed decays B¯0 to D()0π0, D()0η, D()0ω, and D()0η′ and measurement of the polarization in the decay B¯0→D*0ω

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Prudent, X, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report updated branching fraction measurements of the color-suppressed decays B ̄0→D0π0, D *0π0, D0η, D *0η, D0ω, D *0ω, D0η ′, and D *0η ′. We measure the branching fractions (×10 -4): B(B ̄0→D0π0)=2.69±0.09±0.13, B(B ̄0→D *0π0)=3.05±0.14±0.28, B(B ̄0→D0η)=2.53±0.09±0.11, B(B ̄0→D *0η)=2.69±0.14±0.23, B(B ̄0→D0ω)=2.57±0.11±0.14, B(B ̄0→D *0ω)=4.55±0.24±0. 39, B(B ̄0→D0η ′)=1.48±0. 13±0.07, and B(B ̄0→D *0η ′)=1.49±0.22±0.15. We also present the first measurement of the longitudinal polarization fraction of the decay channel D *0ω, f L=(66.5±4.7±1.5)%. In the above, the first uncertainty is statistical and the second is systematic. The results are based on a sample of (454±5)×106 BB̄ pairs collected at the Υ(4S) resonance, with the BABAR detector at the PEP-II storage rings at SLAC. The measurements are the most precise determinations of these quantities from a single experiment. They are compared to theoretical predictions obtained by factorization, Soft Collinear Effective Theory (SCET) and perturbative QCD (pQCD). We find that the presence of final state interactions is favored and the measurements are in better agreement with SCET than with pQCD. © 2011 American Physical Society.
Published: 2011

38. Observation of the rare decay B+→K+π0π0 and measurement of the quasi-two-body contributions B+→K* (892)+π0, B+→f0(980)K+, and B+→χc0K+

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report an analysis of charmless hadronic decays of charged B mesons to the final state K+π0π0, using a data sample of (470.9±2.8)×106 BB̄ events collected with the BABAR detector at the Υ(4S) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and CP asymmetry to be B(B +→K+π0π0)=(16.2±1.2±1.5) ×10-6 and ACP(B+→K +π0π0)=-0.06±0.06±0.04, where the uncertainties are statistical and systematic, respectively. Additionally, we study the contributions of the B+→K*(892) +π0, B+→f0(980)K+, and B+→χc0K+ quasi-two-body decays. We report the world's best measurements of the branching fraction and CP asymmetry of the B+→K+π0π0 and B+→K *(892)+π0 channels. © 2011 American Physical Society.
Published: 2011

39. Search for Hadronic Decays of a Light Higgs Boson in the Radiative Decay Υ→γA0

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: BABAR Collaboration, hep-ex, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract: We search for hadronic decays of a light Higgs boson (A(0)) produced in radiative decays of an Υ(2S) or Υ(3S) meson, Υ→γA(0). The data have been recorded by the BABAR experiment at the Υ(3S) and Υ(2S) center-of-mass energies and include (121.3±1.2)×10(6) Υ(3S) and (98.3±0.9)×10(6) Υ(2S) mesons. No significant signal is observed. We set 90% confidence level upper limits on the product branching fractions B(Υ(nS)→γA(0))B(A(0)→hadrons) (n=2 or 3) that range from 1×10(-6) for an A(0) mass of 0.3 GeV/c(2) to 8×10(-5) at 7 GeV/c(2).
Published: 2011

40. Search for hadronic decays of a light Higgs boson in the radiative decay Υ→γA0.

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, and Calcaterra, A
Subjects: BABAR Collaboration, hep-ex, General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract: We search for hadronic decays of a light Higgs boson (A(0)) produced in radiative decays of an Υ(2S) or Υ(3S) meson, Υ→γA(0). The data have been recorded by the BABAR experiment at the Υ(3S) and Υ(2S) center-of-mass energies and include (121.3±1.2)×10(6) Υ(3S) and (98.3±0.9)×10(6) Υ(2S) mesons. No significant signal is observed. We set 90% confidence level upper limits on the product branching fractions B(Υ(nS)→γA(0))B(A(0)→hadrons) (n=2 or 3) that range from 1×10(-6) for an A(0) mass of 0.3 GeV/c(2) to 8×10(-5) at 7 GeV/c(2).
Published: 2011

41. Evidence for the h b(1P) meson in the decay ?(3S) →π 0h b(1P)

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Osipenkov, IL, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Jasper, H, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, and Negrini, M
Subjects: hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: Using a sample of 122×106 Υ(3S) events recorded with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at SLAC, we search for the h b(1P) spin-singlet partner of the P-wave χ bJ(1P) states in the sequential decay Υ(3S) →π0h b(1P), h b(1P) →γη b(1S). We observe an excess of events above background in the distribution of the recoil mass against the π0 at mass 9902±4(stat)±2(syst)MeV/c2. The width of the observed signal is consistent with experimental resolution, and its significance is 3.1σ, including systematic uncertainties. We obtain the value (4.3±1.1(stat) ±0.9(syst))×10 -4 for the product branching fraction B(Υ(3S)→π0h b)×B(h b→γη b). © 2011 American Physical Society.
Published: 2011

42. Study of Υ(3S,2S)→ηΥ(1S) and Υ(3S,2S) →π +π -Υ(1S) hadronic transitions

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and De Sangro, R
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We study the Υ(3S,2S)→ηΥ(1S) and Υ(3S,2S) →π +π -Υ(1S) transitions with 122×106Υ(3S) and 100×106Υ(2S) mesons collected by the BABAR detector at the PEP-II asymmetric-energy e +e - collider. We measure B[Υ(2S)→ηΥ(1S)]=(2.39±0.31(stat.) ±0.14(syst.))×10 -4 and Γ[Υ(2S) →ηΥ(1S)]/Γ[Υ(2S)→π +π -Υ(1S)]=(1.35±0.17(stat.)±0.08(syst.)) ×10 -3. We find no evidence for Υ(3S)→ηΥ(1S) and obtain B[Υ(3S)→ηΥ(1S)]
Published: 2011

43. Erratum: Study of radiative bottomonium transitions using converted photons (Physical Review D - Particles, Fields, Gravitation and Cosmology)

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Published: 2011

44. Observation of the rare decay B+→K+π0π0 and measurement of the quasi-two-body contributions B+→K*(892)+π0, B+→f0(980)K+, and B+→χc0K+

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We report an analysis of charmless hadronic decays of charged B mesons to the final state K+π0π0, using a data sample of (470.9±2.8)×106 BB̄ events collected with the BABAR detector at the Υ(4S) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and CP asymmetry to be B(B +→K+π0π0)=(16.2±1.2±1.5) ×10-6 and ACP(B+→K +π0π0)=-0.06±0.06±0.04, where the uncertainties are statistical and systematic, respectively. Additionally, we study the contributions of the B+→K*(892) +π0, B+→f0(980)K+, and B+→χc0K+ quasi-two-body decays. We report the world's best measurements of the branching fraction and CP asymmetry of the B+→K+π0π0 and B+→K *(892)+π0 channels. © 2011 American Physical Society.
Published: 2011

45. Study of Υ(3S,2S)→ηΥ(1S) and Υ(3S,2S)→π+π-Υ(1S) hadronic transitions

Author: Lees, JP, Poireau, V, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, and de Sangro, R
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the Υ(3S,2S)→ηΥ(1S) and Υ(3S,2S) →π +π -Υ(1S) transitions with 122×106Υ(3S) and 100×106Υ(2S) mesons collected by the BABAR detector at the PEP-II asymmetric-energy e +e - collider. We measure B[Υ(2S)→ηΥ(1S)]=(2.39±0.31(stat.) ±0.14(syst.))×10 -4 and Γ[Υ(2S) →ηΥ(1S)]/Γ[Υ(2S)→π +π -Υ(1S)]=(1.35±0.17(stat.)±0.08(syst.)) ×10 -3. We find no evidence for Υ(3S)→ηΥ(1S) and obtain B[Υ(3S)→ηΥ(1S)]
Published: 2011

46. Publisher’s Note: Study of radiative bottomonium transitions using converted photons [Phys. Rev. DPRVDAQ1550-7998 84, 072002 (2011)]

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Published: 2011

47. Evidence for the hb(1P) meson in the decay Υ(3S)→π0hb(1P)

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Tico, J Garra, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lynch, G, Osipenkov, IL, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Jasper, H, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, and Negrini, M
Subjects: hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: Using a sample of 122×106 Υ(3S) events recorded with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at SLAC, we search for the h b(1P) spin-singlet partner of the P-wave χ bJ(1P) states in the sequential decay Υ(3S) →π0h b(1P), h b(1P) →γη b(1S). We observe an excess of events above background in the distribution of the recoil mass against the π0 at mass 9902±4(stat)±2(syst)MeV/c2. The width of the observed signal is consistent with experimental resolution, and its significance is 3.1σ, including systematic uncertainties. We obtain the value (4.3±1.1(stat) ±0.9(syst))×10 -4 for the product branching fraction B(Υ(3S)→π0h b)×B(h b→γη b). © 2011 American Physical Society.
Published: 2011

48. Searches for rare or forbidden semileptonic charm decays

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, and Finocchiaro, G
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present searches for rare or forbidden charm decays of the form Xc+→h±′)+, where Xc+ is a charm hadron (D+, Ds+, or Λc+), h± is a pion, kaon, or proton, and (′)± is an electron or muon. The analysis is based on 384fb-1 of e+e- annihilation data collected at or close to the Υ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the 35 decay modes that are investigated. We establish 90% confidence-level upper limits on the branching fractions between 1×10-6 and 44×10-6 depending on the channel. In most cases, these results represent either the first limits or significant improvements on existing limits for the decay modes studied. © 2011 American Physical Society.
Published: 2011

49. Observation of the baryonic B decay B ̄0→Λc+Λ̄K-

Author: Lees, JP, Poireau, V, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Huard, Z, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, and Finocchiaro, G
Subjects: hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report the observation of the baryonic B decay B̄0→ Λc+Λ̄K- with a significance larger than 7 standard deviations based on 471×106 BB̄ pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay B̄0→Λc+Λ̄K- to be (3.8±0.8stat±0.2sys±1.0 Λc+)×10-5. The uncertainties are statistical, systematic, and due to the uncertainty in the Λc+ branching fraction. We find that the Λc+K- invariant-mass distribution shows an enhancement above 3.5GeV/c2. © 2011 American Physical Society.
Published: 2011

50. Study of radiative bottomonium transitions using converted photons

Author: Lees, JP, Poireau, V, Prencipe, E, Tisserand, V, Garra Tico, J, Grauges, E, Martinelli, M, Milanes, DA, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Brown, DN, Kerth, LT, Kolomensky, YG, Lynch, G, Koch, H, Schroeder, T, Asgeirsson, DJ, Hearty, C, Mattison, TS, McKenna, JA, Khan, A, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Yushkov, AN, Bondioli, M, Curry, S, Kirkby, D, Lankford, AJ, Mandelkern, M, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Kroseberg, J, Lockman, WS, Martinez, AJ, Schalk, T, Schumm, BA, Seiden, A, Cheng, CH, Doll, DA, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Rakitin, AY, Andreassen, R, Dubrovin, MS, Meadows, BT, Sokoloff, MD, Bloom, PC, Ford, WT, Gaz, A, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Munerato, M, Negrini, M, Piemontese, L, Baldini-Ferroli, R, and Calcaterra, A
Subjects: hep-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We use (111±1) million Υ(3S) and (89±1) million Υ(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e+e- pairs by the detector material. We observe Υ(3S)→γχb0,2(1P) decay, make precise measurements of the branching fractions for χb1,2(1P,2P)→γΥ(1S) and χb1,2(2P) →γΥ(2S) decays, and search for radiative decay to the ηb(1S) and ηb(2S) states. © 2011 American Physical Society.
Published: 2011

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