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201. 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

202. 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

203. 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

204. 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

205. 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

206. 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

207. 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

208. 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

209. 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

210. 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

211. 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

212. 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

213. 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

214. 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

215. 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

216. 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

217. 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

218. 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

219. 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

220. 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

221. 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

222. 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

223. Measurement of the γγ*→η and γγ*→η′ transition form factors

Author

Del Amo Sanchez, P, 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, Botov, AA, 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, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, 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, 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, Andreotti, M, Bettoni, D, Bozzi, C, Calabrese, R, and Cecchi, 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 reactions e+e-→e+e -η(′) in the single-tag mode and measure the γγ*→η(′) transition form factors in the momentum-transfer range from 4 to 40GeV2. The analysis is based on 469fb-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV. © 2011 American Physical Society.

Published
2011

224. Search for CP violation using T-odd correlations in D+→ K+KS0π+π- and Ds+→K +KS0π+π- 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, 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
Brain Disorders, Intellectual and Developmental Disabilities, 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 CP violation in a sample of 20000 Cabibbo-suppressed decays, D+→K+KS0π+π-, and 30000 Cabibbo-favored decays, Ds+→K+KS0π+π -. We use 520fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider operating at center of mass energies near 10.6 GeV. We search for CP violation in the difference between the T-odd asymmetries obtained using triple product correlations of the D+ (Ds+) and D- (Ds-) decays, respectively. The T violation parameter values obtained are AT(D +)=(-12.0±10.0stat±4.6syst) ×10-3 and AT(Ds+)=(-13.6±7.7 stat±3.4syst)×10-3, which are consistent with the standard model expectations. © 2011 American Physical Society.

Published
2011

225. Search for CP violation using T-odd correlations in D+→K+KS0π+π- and Ds+→K+KS0π+π- 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, 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
Intellectual and Developmental Disabilities (IDD), Brain Disorders, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We search for CP violation in a sample of 20000 Cabibbo-suppressed decays, D+→K+KS0π+π-, and 30000 Cabibbo-favored decays, Ds+→K+KS0π+π -. We use 520fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider operating at center of mass energies near 10.6 GeV. We search for CP violation in the difference between the T-odd asymmetries obtained using triple product correlations of the D+ (Ds+) and D- (Ds-) decays, respectively. The T violation parameter values obtained are AT(D +)=(-12.0±10.0stat±4.6syst) ×10-3 and AT(Ds+)=(-13.6±7.7 stat±3.4syst)×10-3, which are consistent with the standard model expectations. © 2011 American Physical Society.

Published
2011

226. Study of dipion bottomonium transitions and search for the h b(1P) state

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 study inclusive dipion decays using a sample of 108×106Υ(3S) events recorded with the BABAR detector. We search for the decay mode Υ(3S)→π+π-hb(1P) and find no evidence for the bottomonium spin-singlet state hb(1P) in the invariant mass distribution recoiling against the π+π - system. Assuming the hb(1P) mass to be 9.900GeV/c2, we measure the upper limit on the branching fraction B[Υ(3S) →π+π-hb(1P)]

Published
2011

227. Observation of the decay B- → D(s)((*)+) K- ℓ- ν(ℓ).

Author

Sanchez, P del Amo, 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, 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, Hong, TM, Kovalskyi, D, Richman, JD, 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, Clark, PJ, and Playfer, S

Subjects
BABAR Collaboration, General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We report the observation of the decay B- → D(s)((*)+) K- ℓ- ν(ℓ) based on 342  fb(-1) of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+ e- storage rings at SLAC. A simultaneous fit to three D(s)(+) decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B- → D(s)((*)+) K- ℓ- ν(ℓ) with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B- → D(s)((*)+) K- ℓ- ν(ℓ)) = [6.13(-1.03)(+1.04)(stat)±0.43(syst)±0.51(B(D(s)))]×10(-4), where the last error reflects the limited knowledge of the D(s) branching fractions.

Published
2011

228. Observation of the Decay B-→Ds(*)+K-ℓ-ν¯ℓ

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, Hong, TM, Kovalskyi, D, Richman, JD, 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, Clark, PJ, and Playfer, S

Subjects
BABAR Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report the observation of the decay B- → D(s)((*)+) K- ℓ- ν(ℓ) based on 342  fb(-1) of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+ e- storage rings at SLAC. A simultaneous fit to three D(s)(+) decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B- → D(s)((*)+) K- ℓ- ν(ℓ) with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B- → D(s)((*)+) K- ℓ- ν(ℓ)) = [6.13(-1.03)(+1.04)(stat)±0.43(syst)±0.51(B(D(s)))]×10(-4), where the last error reflects the limited knowledge of the D(s) branching fractions.

Published
2011

229. Search for Production of Invisible Final States in Single-Photon Decays of Υ(1S)

Author

del Amo Sanchez, P, 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, Chistiakova, MV, Jensen, F, Kerth, LT, Kolomensky, Yu G, Lynch, G, Osipenkov, IL, 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, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, and Andreotti, M

Subjects
BABAR Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We search for single-photon decays of the Υ(1S) resonance, Υ → γ + invisible, where the invisible state is either a particle of definite mass, such as a light Higgs boson A⁰, or a pair of dark matter particles, χχ. Both A⁰ and χ are assumed to have zero spin. We tag Υ(1S) decays with a dipion transition Υ(2S) → π⁺π⁻Υ(1S) and look for events with a single energetic photon and significant missing energy. We find no evidence for such processes in the mass range m(A⁰) ≤ 9.2 GeV and m(χ) ≤ 4.5 GeV in the sample of 98 × 10⁶ Υ(2S) decays collected with the BABAR detector and set stringent limits on new physics models that contain light dark matter states.

Published
2011

230. Search for b→u transitions in B±→[K ±π±π0]DK ± 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, 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, 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 study of the decays B±→DK ± with D mesons reconstructed in the K+π -π0 or K-π+π0 final states, where D indicates a D0 or a D̄0 meson. Using a sample of 474×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure the ratios R ±Γ(B±→[K±π ±π0]DK±)Γ(B ±→[K±π±π0] DK±). We obtain R+=(5-10+12(stat)- 4+2(syst))×10-3 and R-=(12-10+12(stat)-5+3(syst)) ×10-3, from which we extract the upper limits at 90% probability: R+

Published
2011

231. Measurements of branching fractions and CP asymmetries and studies of angular distributions for B→ÏÏK decays

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 present branching fraction and CP asymmetry measurements as well as angular studies of B→ÏÏK decays using 464×106 BB̄ events collected by the BABAR experiment. The branching fractions are measured in the ÏÏ invariant mass range below the ηc resonance (mÏÏ

Published
2011

232. Observation of ηc(1S) and ηc(2S) decays to K+K-π+π-π0 in two-photon interactions

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, 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
Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We study the processes γγ→KS0K±π and γγ→K+K-π+π -π0 using a data sample of 519.2fb-1 recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the ηc(1S), χc0(1P) and ηc(2S) resonances produced in two-photon interactions and decaying to K+K-π+π-π0, with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χc2(1P) decay to this final state. We measure the ηc(2S) mass and width in KS0K±π decays, and obtain the values m(ηc(2S))=3638.5±1.5±0.8MeV/c2 and Γ(ηc(2S))=13.4±4.6±3.2MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χc2(2P) resonance, but no significant signal is observed. © 2011 American Physical Society.

Published
2011

233. Search for b→u transitions in B±→[K∓π±π0]DK± 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, 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, 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 study of the decays B±→DK ± with D mesons reconstructed in the K+π -π0 or K-π+π0 final states, where D indicates a D0 or a D̄0 meson. Using a sample of 474×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure the ratios R ±Γ(B±→[K±π ±π0]DK±)Γ(B ±→[K±π±π0] DK±). We obtain R+=(5-10+12(stat)- 4+2(syst))×10-3 and R-=(12-10+12(stat)-5+3(syst)) ×10-3, from which we extract the upper limits at 90% probability: R+

Published
2011

234. Study of dipion bottomonium transitions and search for the hb(1P) state

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, 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
Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We study inclusive dipion decays using a sample of 108×106Υ(3S) events recorded with the BABAR detector. We search for the decay mode Υ(3S)→π+π-hb(1P) and find no evidence for the bottomonium spin-singlet state hb(1P) in the invariant mass distribution recoiling against the π+π - system. Assuming the hb(1P) mass to be 9.900GeV/c2, we measure the upper limit on the branching fraction B[Υ(3S) →π+π-hb(1P)]

Published
2011

235. Amplitude analysis of B0→K+π-π0 and evidence of direct CP violation in B→K*π decays

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 analyze the decay B0→K+π-π0 with a sample of 4.54×108 BB̄ events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, and extract the complex amplitudes of seven interfering resonances over the Dalitz plot. These results are combined with amplitudes measured in B0→KS0π+π- decays to construct isospin amplitudes from B0→K*π and B0→ρK decays. We measure the phase of the isospin amplitude Φ3/2, useful in constraining the Cabibbo-Kobayashi-Maskawa unitarity triangle angle γ and evaluate a CP rate asymmetry sum rule sensitive to the presence of new physics operators. We measure direct CP violation in B0→K*+π- decays at the level of 3σ when measurements from both B0→K+π -π0 and B0→KS0π+π- decays are combined. © 2011 American Physical Society.

Published
2011

236. Searches for the baryon- and lepton-number violating decays B0→Λc+l-, B-→Λl-, and B-→Λ̄l-

Author

Del Amo Sanchez, P, 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, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, 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, 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, Andreotti, M, Bettoni, D, Bozzi, C, Calabrese, R, Cecchi, A, and Cibinetto, 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

Searches for B mesons decaying to final states containing a baryon and a lepton are performed, where the baryon is either Λc or Λ and the lepton is a muon or an electron. These decays violate both baryon and lepton number and would be a signature of physics beyond the standard model. No significant signal is observed in any of the decay modes, and upper limits in the range (3.2-520)×10-8 are set on the branching fractions at the 90% confidence level. © 2011 American Physical Society.

Published
2011

237. Search for CP violation in the decay D±→KS0π ±

Author

Del Amo Sanchez, P, 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, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, 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, 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, Andreotti, M, Bettoni, D, Bozzi, C, Calabrese, R, Cecchi, A, and Cibinetto, 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 report on a search for CP violation in the decay D ±→KS0π± using a data set corresponding to an integrated luminosity of 469fb-1 collected with the BABAR detector at the PEP-II asymmetric energy e+e- storage rings. The CP-violating decay rate asymmetry ACP is determined to be (-0.44±0.13(stat)±0.10(syst))%, consistent with zero at 2.7σ and with the standard model prediction of (-0.332±0.006)%. This is currently the most precise measurement of this parameter. © 2011 American Physical Society.

Published
2011

238. Measurement of the mass and width of the Ds1(2536)+ meson

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
Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The decay width and mass of the Ds1(2536)+ meson are measured via the decay channel Ds1+→D*+KS0 using 385fb-1 of data recorded with the BABAR detector in the vicinity of the Υ(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Γ(Ds1+)=0.92±0.03(stat.)±0.04(syst.)MeV. For the mass, a value of m(Ds1+)=2535.08±0.01(stat.)±0.15(syst.)MeV/c2 is obtained. The mass difference between the Ds1+ and the D*+ is measured to be m(Ds1+)-m(D*+)=524. 83±0.01(stat.)±0.04(syst.)MeV/c2, representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the Ds1+ meson is confirmed. © 2011 American Physical Society.

Published
2011

239. Analysis of the D+→K-π+e+νe decay channel

Author

del Amo Sanchez, P, 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, Randle-Conde, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, and Bozzi, C

Subjects
Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

Using 347.5fb-1 of data recorded by the BABAR detector at the PEP-II electron-positron collider, 244×103 signal events for the D +→K-π+e+νe decay channel are analyzed. This decay mode is dominated by the K̄(892)0 contribution. We determine the K̄*(892)0 parameters: mK(892)0=(895.4±0.2±0.2)MeV/c2, ΓK *(892)00=(46.5±0.3±0.2)MeV/c2, and the Blatt-Weisskopf parameter rBW=2.1±0.5±0.5(GeV/c) -1, where the first uncertainty comes from statistics and the second from systematic uncertainties. We also measure the parameters defining the corresponding hadronic form factors at q2=0 (rV=V(0)A 1(0)=1.463±0.017±0.031, r2=A 2(0)A1(0)=0.801±0.020±0.020) and the value of the axial-vector pole mass parametrizing the q2 variation of A1 and A2: mA=(2.63±0.10±0.13)GeV/c2. The S-wave fraction is equal to (5.79±0.16±0.15)%. Other signal components correspond to fractions below 1%. Using the D+→K -π+π+ channel as a normalization, we measure the D+ semileptonic branching fraction: B(D +→K-π+e+νe)= (4.00±0.03±0.04±0.09)×10-2, where the third uncertainty comes from external inputs. We then obtain the value of the hadronic form factor A1 at q2=0: A1(0)=0.6200±0. 0056±0.0065±0.0071. Fixing the P-wave parameters, we measure the phase of the S wave for several values of the Kπ mass. These results confirm those obtained with Kπ production at small momentum transfer in fixed target experiments. © 2011 American Physical Society.

Published
2011

240. Analysis of the D+→K-π+e +νe decay channel

Author

Del Amo Sanchez, P, 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, Randle-Conde, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, and Bozzi, C

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

Using 347.5fb-1 of data recorded by the BABAR detector at the PEP-II electron-positron collider, 244×103 signal events for the D +→K-π+e+νe decay channel are analyzed. This decay mode is dominated by the K̄(892)0 contribution. We determine the K̄*(892)0 parameters: mK(892)0=(895.4±0.2±0.2)MeV/c2, ΓK *(892)00=(46.5±0.3±0.2)MeV/c2, and the Blatt-Weisskopf parameter rBW=2.1±0.5±0.5(GeV/c) -1, where the first uncertainty comes from statistics and the second from systematic uncertainties. We also measure the parameters defining the corresponding hadronic form factors at q2=0 (rV=V(0)A 1(0)=1.463±0.017±0.031, r2=A 2(0)A1(0)=0.801±0.020±0.020) and the value of the axial-vector pole mass parametrizing the q2 variation of A1 and A2: mA=(2.63±0.10±0.13)GeV/c2. The S-wave fraction is equal to (5.79±0.16±0.15)%. Other signal components correspond to fractions below 1%. Using the D+→K -π+π+ channel as a normalization, we measure the D+ semileptonic branching fraction: B(D +→K-π+e+νe)= (4.00±0.03±0.04±0.09)×10-2, where the third uncertainty comes from external inputs. We then obtain the value of the hadronic form factor A1 at q2=0: A1(0)=0.6200±0. 0056±0.0065±0.0071. Fixing the P-wave parameters, we measure the phase of the S wave for several values of the Kπ mass. These results confirm those obtained with Kπ production at small momentum transfer in fixed target experiments. © 2011 American Physical Society.

Published
2011

241. Measurement of the B0→π-ℓ+ν and B +→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B +→ηℓ+ν form-factor shapes, and determination of

Author

Del Amo Sanchez, P, 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, Randle-Conde, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, and Bozzi, C

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 the results of a study of the exclusive charmless semileptonic decays, B+→η(′)ℓ+ν and B0→π-ℓ+ν, undertaken with approximately 464×106 BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B+→ηℓ+ν and B0→π-ℓ+ν decays in three and 12 bins of q2, respectively, from which we extract the f+(q2) form-factor shapes and the total branching fractions B(B+→ηℓ +ν)=(0.36±0.05stat±0.04 syst)×10-4 and B(B0→π -ℓ+ν)=(1.42±0.05stat±0. 07syst)×10-4. We also measure B(B +→η′ℓ+ν)=(0.24±0. 08stat±0.03syst)×10-4. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations. © 2011 American Physical Society.

Published
2011

242. Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B+→ρ0K*+ and B+→f0(980)K*+ decays

Author

Del Amo Sanchez, P, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, Bozzi, C, and Calabrese, 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 measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B +→ρ0K*+ and B +→f0(980)K*+ with a sample of (467±5)×106BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. We observe B+→ρ 0K*+ with a significance of 5.3σ and measure the branching fraction B(B+→ρ0K*+)=(4.6±1.0±0.4)×10-6, the longitudinal polarization fL=0.78±0.12±0.03, and the CP-violation asymmetry ACP=0.31±0.13±0.03. We observe B+→f0(980)K*+ and measure the branching fraction B(B+→f0(980)K *+)×B(f0(980) →π+π-)=(4.2±0.6±0.3) ×10-6 and the CP-violation asymmetry ACP=-0. 15±0.12±0.03. The first uncertainty quoted is statistical and the second is systematic. © 2011 American Physical Society.

Published
2011

243. Dalitz plot analysis of Ds+→K+K-π+

Author

Del Amo Sanchez, P, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, Bozzi, C, and Calabrese, R

Subjects
Brain Disorders, Intellectual and Developmental Disabilities, Down Syndrome, 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 a Dalitz plot analysis of about 100000 Ds+ decays to K +K-π+ and measure the complex amplitudes of the intermediate resonances which contribute to this decay mode. We also measure the relative branching fractions of Ds+→K+K+π - and Ds+→K+K+K-. For this analysis we use a 384 fb-1 data sample, recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider running at center-of-mass energies near 10.58 GeV. © 2011 American Physical Society.

Published
2011

244. Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub|

Author

del Amo Sanchez, P, 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, Randle-Conde, 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, 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, Petzold, A, Spaan, B, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, Playfer, S, Watson, JE, Andreotti, M, Bettoni, D, and Bozzi, C

Subjects
Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We report the results of a study of the exclusive charmless semileptonic decays, B+→η(′)ℓ+ν and B0→π-ℓ+ν, undertaken with approximately 464×106 BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B+→ηℓ+ν and B0→π-ℓ+ν decays in three and 12 bins of q2, respectively, from which we extract the f+(q2) form-factor shapes and the total branching fractions B(B+→ηℓ +ν)=(0.36±0.05stat±0.04 syst)×10-4 and B(B0→π -ℓ+ν)=(1.42±0.05stat±0. 07syst)×10-4. We also measure B(B +→η′ℓ+ν)=(0.24±0. 08stat±0.03syst)×10-4. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations. © 2011 American Physical Society.

Published
2011

245. Measurement of partial branching fractions of inclusive charmless B meson decays to K+, K0, and π+

Author

Del Amo Sanchez, P, 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, Martin, EC, Stoker, DP, Atmacan, H, Gary, JW, Liu, F, Long, O, Vitug, GM, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, 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, Meadows, BT, Sokoloff, MD, Blanc, F, 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, Andreotti, M, Bettoni, D, Bozzi, C, Calabrese, R, and Cecchi, 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 present measurements of partial branching fractions of B→K +X, B→K0X, and B→π+X, where X denotes any accessible final state above the endpoint for B decays to charmed mesons, specifically for momenta of the candidate hadron greater than 2.34 (2.36) GeV for kaons (pions) in the B rest frame. These measurements are sensitive to potential new-physics particles which could enter the b→s(d) loop transitions. The analysis is performed on a data sample consisting of 383×106BB̄ pairs collected with the BABAR detector at the PEP-II e+e- asymmetric energy collider. We observe the inclusive B→π+X process, and we set upper limits for B→K +X and B→K0X. Our results for these inclusive branching fractions are consistent with those of known exclusive modes, and exclude large enhancements due to sources of new physics. © 2011 American Physical Society.

Published
2011

246. Search for the decay B0→γγ

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
Abstract

We report the result of a search for the rare decay B0→γγ in 426fb-1 of data, corresponding to 226×106 B0B ̄0 pairs, collected on the Υ(4S) resonance at the PEP-II asymmetric-energy e+e- collider using the BABAR detector. We use a maximum likelihood fit to extract the signal yield and observe 21-12+13 signal events with a statistical significance of 1.8σ. This corresponds to a branching fraction B(B0→γγ)=(1.7±1.1(stat.) ±0.2(syst.))×10-7. Based on this result, we set a 90% confidence level upper limit of B(B0→γγ)

Published
2011

247. Study of B→πlν and B→ρlν decays and determination of

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, Soni, N, 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, Yasin, Z, Sharma, V, Campagnari, C, Hong, TM, Kovalskyi, D, Richman, JD, 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, Hirschauer, JF, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Hauke, A, Jasper, H, Karbach, TM, Merkel, J, Petzold, A, Spaan, B, Wacker, K, Kobel, MJ, and Schubert, KR

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 an analysis of exclusive charmless semileptonic B-meson decays based on 377×106 BB̄ pairs recorded with the B A BAR detector at the Υ(4S) resonance. We select four event samples corresponding to the decay modes B0→π-ℓ+ν, B +→π0ℓ+ν, B0→ρ -ℓ+ν, and B+→ρ0ℓ +ν and find the measured branching fractions to be consistent with isospin symmetry. Assuming isospin symmetry, we combine the two B→πℓν samples, and similarly the two B→ρℓν samples, and measure the branching fractions B(B0→π -ℓ+ν)=(1.41±0.05±0.07)×10 -4 and B(B0→ρ-ℓ+ν)=(1. 75±0.15±0.27)×10-4, where the errors are statistical and systematic. We compare the measured distribution in q2, the momentum transfer squared, with predictions for the form factors from QCD calculations and determine the Cabibbo-Kobayashi-Maskawa matrix element |V ub|. Based on the measured partial branching fraction for B→πℓν in the range q2

Published
2011

248. Measurement of the B→D̄(*)D(*)K branching fractions

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
Abstract

We present a measurement of the branching fractions of the 22 decay channels of the B0 and B+ mesons to D̄(*)D(*)K, where the D(*) and D̄(*) mesons are fully reconstructed. Summing the 10 neutral modes and the 12 charged modes, the branching fractions are found to be B(B0→D̄(*)D(*)K)=(3.68±0. 10±0.24)% and B(B+→D̄(*)D(*)K)=(4. 05±0.11±0.28)%, where the first uncertainties are statistical and the second systematic. The results are based on 429fb-1 of data containing 471×106BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. © 2011 American Physical Society.

Published
2011

249. Studies of τ-→ηK-ντ and τ-→ηπ-ντ at BABAR and a search for a second-class current

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
Abstract

We report on analyses of tau lepton decays τ -→ηK-ντ and τ-→ηπ-ντ, with η→π+π-π0, using 470fb-1 of data from the BABAR experiment at PEP-II, collected at center-of-mass energies at and near the Υ(4S) resonance. We measure the branching fraction for the τ-→ηK-ντ decay mode, B(τ-→ηK-ντ)=(1.42±0. 11(stat)±0.07(syst))×10-4, and report a 95% confidence level upper limit for the second-class current process τ -→ηπ-ντ, B(τ-→ηπ-ντ)

Published
2011

250. Observation of the Y1/3D/J bottomonium state through decays to n+n Y1s

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, 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, Hirschauer, JF, Nagel, M, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Karbach, TM, Merkel, J, Petzold, A, Spaan, B, Wacker, K, Kobel, MJ, Schubert, KR, Schwierz, R, Bernard, D, Verderi, M, Clark, PJ, and Playfer, S

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

Based on 122×106Υ(3S) events collected with the BABAR detector, we have observed the Υ(13DJ) bottomonium state through the Υ(3S)→γγΥ(13DJ) →γγπ⊃+π⊃-Υ(1S) decay chain. The significance for the J=2 member of the Υ(13DJ) triplet is 5.8 standard deviations including systematic uncertainties. The mass of the J=2 state is determined to be 10164.5±0.8(stat)±0.5(syst)MeV/c2. We use the π⊃+π⊃- invariant mass distribution to confirm the consistency of the observed state with the orbital angular momentum assignment of the Υ(13DJ). Copyright © 2010 American Physical Society.

Published
2010

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