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225 results on '"Wagner SR"'

1. Study of the reactions e+e-→π+π-π0π0π0π0 and π+π-π0π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Middleton, S, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, and Cowan, G

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes e+e-→π+π-π0π0π0π0γ and π+π-π0π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 7300 and 870 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e-→π+π-π0π0π0π0 and the e+e-→π+π-π0π0π0η cross sections are performed. The contributions from ωπ0π0π0, ηπ+π-π0, ωη, and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Published
2021

2. Study of the process e+e-→π+π-π0 using initial state radiation with BABAR

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Middleton, S, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, and Cowan, G

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

The process e+e-→π+π-π0γ is studied at a center-of-mass energy near the D(4S) resonance using a data sample of 469 fb-1 collected with the BABAR detector at the PEP-II collider. We have performed a precise measurement of the e+e-→π+π-π0 cross section in the center-of-mass energy range from 0.62 to 3.5 GeV. In the energy regions of the ω and φ resonances, the cross section is measured with a systematic uncertainty of 1.3%. The leading-order hadronic contribution to the muon magnetic anomaly calculated using the measured e+e-→π+π-π0 cross section from threshold to 2.0 GeV is (45.86±0.14±0.58)×10-10. From the fit to the measured 3π mass spectrum we have determined the resonance parameters Γ(ω→e+e-)B(ω→π+π-π0)=(0.5698±0.0031±0.0082) keV, Γ(φ→e+e-)B(φ→π+π-π0)=(0.1841±0.0021±0.0080) keV, and B(ρ→3π)=(0.88±0.23±0.30)×10-4. The significance of the ρ→3π signal is greater than 6σ. For the J/ψ resonance we have measured the product Γ(J/ψ→e+e-)B(J/ψ→3π)=(0.1248±0.0019±0.0026) keV.

Published
2021

3. Light meson spectroscopy from Dalitz plot analyses of ηc decays to η′K+K-, η′π+π-, and ηπ+π- produced in two-photon interactions

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, and Banerjee, Sw

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes , , and using a data sample of recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy collider at center-of-mass energies at and near the (, 3, 4) resonances. This is the first observation of the decay and we measure the branching fraction . Significant interference is observed between and the nonresonant two-photon process . A Dalitz plot analysis is performed of decays to , , and . Combined with our previous analysis of , we measure the parameters and the ratio between its and couplings. The decay is dominated by the resonance, also observed in radiative decays. A new resonance is observed in the channel. We also compare decays to and final states in association with scalar mesons as they relate to the identification of the scalar glueball.

Published
2021

4. Study of the reactions e+e- →2 (π+π-)π0π0π0 and 2 (π+π-)π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation STUDY of the REACTIONS ... LEES J. P. et al.

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, and Banerjee, S

Abstract

We study the processes e+e-→2(π+π-)π0π0π0γ and 2(π+π-)π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e-→2(π+π-)π0π0π0 and the e+e-→2(π+π-)π0π0η cross sections are performed. The contributions from ωπ+π-π0π0, η2(π+π-), and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Published
2021

5. Study of the reactions e+e-→2(π+π-)π0π0π0 and 2(π+π-)π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, and Banerjee, Sw

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes e+e-→2(π+π-)π0π0π0γ and 2(π+π-)π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e-→2(π+π-)π0π0π0 and the e+e-→2(π+π-)π0π0η cross sections are performed. The contributions from ωπ+π-π0π0, η2(π+π-), and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Published
2021

6. Search for lepton-flavor-violating decays D0→X0e±μ∓

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Lin, DX, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, and Banerjee, Sw

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D0→X0e±μ, where X0 represents a π0, KS0, K̄∗0, ρ0, φ, ω, or η meson. The analysis is based on 468 fb-1 of e+e- annihilation data collected at or close to the (4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signals are observed, and we establish 90% confidence level upper limits on the branching fractions in the range (5.0-22.5)×10-7. The limits are between 1 and 2 orders of magnitude more stringent than previous measurements.

Published
2020

7. Resonances in e+e- annihilation near 2.2 GeV RESONANCES in E+E- ANNIHILATION NEAR 2.2 GEV LEES J. P. et al.

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, and Davis, CL

Abstract

Using the initial-state radiation method, the e+e-→KSKL cross section from 1.98 to 2.54 GeV is measured in a data sample of 469 fb-1 collected with the BABAR detector. The results are used in conjunction with previous BABAR results for the e+e-→K+K-, e+e-→π+π-, e+e-→π+π-η, and e+e-→ωππ cross sections to investigate the nature of the resonance structure recently observed by the BESIII experiment in the e+e-→K+K- cross section.

Published
2020

8. Search for B-→ Λ p ν ν with the B a B ar experiment SEARCH for B-→ Λ p ν ν ... LEES J. P. et al.

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, and Denig, AG

Subjects
hep-ex
Abstract

A search for the rare flavor-changing neutral current process B-→Λpνν using data from the BABAR experiment has been performed. A total of 424 fb-1 of e+e-collision data collected at the center-of-mass energy of the Ï'(4S) resonance is used in this study, corresponding to a sample of (471±3)×106 BB pairs. Signal B-→Λpνν candidates are identified by first fully reconstructing a B+ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with this reconstructed B+ decay for evidence of a signal B-→Λpνν decay. The data yield is found to be consistent with the expected background contribution under a null signal hypothesis, resulting in an upper limit of B(B-→Λpνν)

Published
2019

9. Search for B-→Λp¯νν¯ with the BaBar experiment

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, and Denig, AG

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A search for the rare flavor-changing neutral current process B-→Λpνν using data from the BABAR experiment has been performed. A total of 424 fb-1 of e+e-collision data collected at the center-of-mass energy of the Ï'(4S) resonance is used in this study, corresponding to a sample of (471±3)×106 BB pairs. Signal B-→Λpνν candidates are identified by first fully reconstructing a B+ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with this reconstructed B+ decay for evidence of a signal B-→Λpνν decay. The data yield is found to be consistent with the expected background contribution under a null signal hypothesis, resulting in an upper limit of B(B-→Λpνν)

Published
2019

10. Measurement of the γ*γ*→η′ transition form factor

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Quantum Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the process e+e-→e+e-η′ in the double-tag mode and measure for the first time the γ γ →η′ transition form factor Fη′(Q12,Q22) in the momentum-transfer range 2

Published
2018

11. Study of the reactions e+e-→π+π-π0π0π0 and π+π-π0π0η at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes e+e-→π+π-π0π0π0γ and π+π-π0π0ηγ in which an energetic photon is radiated from the initial state. The data are collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. From the mass spectra, the first precise measurement of the e+e-→π+π-π0π0π0 cross section and the first measurement ever of the e+e-→π+π-π0π0η cross section are performed. The center-of-mass energies range from threshold to 4.35 GeV. The systematic uncertainty is typically between 10% and 13%. The contributions from ωπ0π0, ηπ+π-, and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Published
2018

12. Measurement of the γ∗γ∗ →η′ transition form factor

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, SW, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Abstract

We study the process e+e-→e+e-η′ in the double-tag mode and measure for the first time the γ γ →η′ transition form factor Fη′(Q12,Q22) in the momentum-transfer range 2

Published
2018

13. Search for the decay mode B0→ppp¯p¯

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Affordable and Clean Energy, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A search is presented for the four-body decay B0→ppp̄p̄ in a sample of 471 million BB̄ pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e+e- collider. The center-of-mass energy is 10.58 GeV. From a fit to the distribution of the energy-substituted mass mES, the branching fraction B(B0→ppp̄p̄)=(1.1±0.5±0.2)×10-7 is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal, including the systematic uncertainty, is 2.9 standard deviations. The upper limit on the branching fraction is determined to be 2.0×10-7 at 90% confidence level.

Published
2018

14. Measurement of the spectral function for the τ-→K-KSντ decay

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

The decay τ-→K-KSντ has been studied using 430×106 e+e-→τ+τ- events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K-KS system has been measured and the spectral function has been obtained. The measured branching fraction B(τ-→K-KSντ)=(0.739±0.011(stat)±0.020(syst))×10-3 is found to be in agreement with earlier measurements.

Published
2018

15. Study of (1S) radiative decays to γπ+π- and γk+K-

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Giannuzzi, F, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, and Gradl, W

Abstract

We study the (1S) radiative decays to γπ+π- and γK+K- using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at the (2S) and (3S) resonances. The (1S) resonance is reconstructed from the decay (nS)→π+π-(1S), n=2, 3. Branching fraction measurements and spin-parity analyses of (1S) radiative decays are reported for the I=0 S-wave and f2(1270) resonances in the π+π- mass spectrum, the f2′(1525) and f0(1500) in the K+K- mass spectrum, and the f0(1710) in both.

Published
2018

16. Study of ϒ(1S) radiative decays to γπ+π- and γK+K-

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Giannuzzi, F, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, and Gradl, W

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the (1S) radiative decays to γπ+π- and γK+K- using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at the (2S) and (3S) resonances. The (1S) resonance is reconstructed from the decay (nS)→π+π-(1S), n=2, 3. Branching fraction measurements and spin-parity analyses of (1S) radiative decays are reported for the I=0 S-wave and f2(1270) resonances in the π+π- mass spectrum, the f2′(1525) and f0(1500) in the K+K- mass spectrum, and the f0(1710) in both.

Published
2018

17. Study of the process e(+)e(-) -> pi(+)pi(-)eta using initial state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Rohrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Published
2018

18. Study of the process e+e-→π+π-η using initial state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kozyrev, EA, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Li, Y, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Published
2018

19. Measurement of the e+e-→π+π-π0π0 cross section using initial-state radiation at BABAR

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Gradl, W, Griessinger, K, and Hafner, A

Abstract

The process e+e-→π+π-2π0γ is investigated by means of the initial-state radiation technique, where a photon is emitted from the incoming electron or positron. Using 454.3 fb-1 of data collected around a center-of-mass energy of s=10.58 GeV by the BABAR experiment at SLAC, approximately 150000 signal events are obtained. The corresponding nonradiative cross section is measured with a relative uncertainty of 3.6% in the energy region around 1.5 GeV, surpassing all existing measurements in precision. Using this new result, the channel's contribution to the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon is calculated as (gμπ+π-2π0-2)/2=(17.9±0.1stat±0.6syst)×10-10 in the energy range 0.85 GeV

Published
2017

20. Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Franco Sevilla, M, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

Abstract

We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state KS0π+π0 using the full BABAR data set of 470.9±2.8 million BB events collected at the ϒ(4S) resonance. We measure the overall branching fraction and CP asymmetry to be B(B+→K0π+π0)=(31.8±1.8±2.1-0.0+6.0)×10-6 and ACP(B+→K0π+π0)=0.07±0.05±0.03-0.03+0.02, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B+→K0π+π0. We find first evidence of a CP asymmetry in B+→K∗(892)+π0 decays: ACP(B+→K∗(892)+π0)=-0.52±0.14±0.04-0.02+0.04. The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.

Published
2017

21. Evidence for CP violation in B+→K*(892)+π0 from a Dalitz plot analysis of B+→KS0π+π0 decays

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences
Abstract

We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state KS0π+π0 using the full BABAR data set of 470.9±2.8 million BB events collected at the ϒ(4S) resonance. We measure the overall branching fraction and CP asymmetry to be B(B+→K0π+π0)=(31.8±1.8±2.1-0.0+6.0)×10-6 and ACP(B+→K0π+π0)=0.07±0.05±0.03-0.03+0.02, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B+→K0π+π0. We find first evidence of a CP asymmetry in B+→K∗(892)+π0 decays: ACP(B+→K∗(892)+π0)=-0.52±0.14±0.04-0.02+0.04. The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.

Published
2017

22. Measurement of the e+e-→Ks0K±π∓π0 and Ks0K±π∓η cross sections using initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Lukin, PA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Subjects
Nuclear and Plasma Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

The processes e+e-→KS0K±π π0 and e+e-→KS0K±π η are studied over a continuum of energies from threshold to 4 GeV with the initial-state photon radiation method. Using 454 fb-1 of data collected with the BABAR detector at the SLAC PEP-II storage ring, the first measurements of the cross sections for these processes are obtained. The intermediate resonance structures from K∗0(Kπ)0, K∗(892)±(Kπ) , and KS0K±ρ are studied. The J/ψ is observed in all of these channels, and corresponding branching fractions are measured.

Published
2017

23. Measurement of the e+e−→Ks0K±π∓π0 and Ks0K±π∓η cross sections using initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Lukin, PA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Gradl, W, and Griessinger, K

Abstract

The processes e+e-→KS0K±π π0 and e+e-→KS0K±π η are studied over a continuum of energies from threshold to 4 GeV with the initial-state photon radiation method. Using 454 fb-1 of data collected with the BABAR detector at the SLAC PEP-II storage ring, the first measurements of the cross sections for these processes are obtained. The intermediate resonance structures from K∗0(Kπ)0, K∗(892)±(Kπ) , and KS0K±ρ are studied. The J/ψ is observed in all of these channels, and corresponding branching fractions are measured.

Published
2017

24. Measurement of the inclusive electron spectrum from B meson decays and determination of |Vub|

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, and Schubert, KR

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Based on the full BABAR data sample of 466.5 million BB pairs, we present measurements of the electron spectrum from semileptonic B meson decays. We fit the inclusive electron spectrum to distinguish Cabibbo-Kobayashi-Maskawa (CKM) suppressed B→Xueν decays from the CKM-favored B→Xceν decays, and from various other backgrounds, and determine the total semileptonic branching fraction B(B→Xeν)=(10.34±0.04stat±0.26syst)%, averaged over B± and B0 mesons. We determine the spectrum and branching fraction for charmless B→Xueν decays and extract the CKM element |Vub|, by relying on four different QCD calculations based on the heavy quark expansion. While experimentally, the electron momentum region above 2.1 GeV/c is favored, because the background is relatively low, the uncertainties for the theoretical predictions are largest in the region near the kinematic endpoint. Detailed studies to assess the impact of these four predictions on the measurements of the electron spectrum, the branching fraction, and the extraction of the CKM matrix element |Vub| are presented, with the lower limit on the electron momentum varied from 0.8 GeV/c to the kinematic endpoint. We determine |Vub| using each of these different calculations and find, |Vub|=(3.794±0.107exp -0.219 SF+0.292 -0.068 theory+0.078)×10-3 (De Fazio and Neubert), (4.563±0.126exp -0.208 SF+0.230 -0.163 theory+0.162)×10-3 (Bosch, Lange, Neubert, and Paz), (3.959±0.104exp -0.154 SF+0.164 -0.079 theory+0.042)×10-3 (Gambino, Giordano, Ossola, and Uraltsev), (3.848±0.108exp -0.070 theory+0.084)×10-3 (dressed gluon exponentiation), where the stated uncertainties refer to the experimental uncertainties of the partial branching fraction measurement, the shape function parameters, and the theoretical calculations.

Published
2017

25. Dalitz plot analyses of J/ψ→π+π-π0, J/ψ→K+K-π0, and J/ψ→Ks0K±π∓ produced via e+e- annihilation with initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Szczepaniak, AP, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Pennington, MR, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, and Gradl, W

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes e+e-→γISRJ/ψ, where J/ψ→π+π-π0, J/ψ→K+K-π0, and J/ψ→KS0K±π∓ using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the ϒ(nS) (n=2,3,4) resonances. We measure the ratio of branching fractions R1=B(J/ψ→K+K-π0)B(J/ψ→π+π-π0) and R2=B(J/ψ→KS0K±π∓)B(J/ψ→π+π-π0). We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ→π+π-π0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450) in all three J/ψ decay modes and measure the relative branching fraction: R(ρ(1450))=B(ρ(1450)→K+K-)B(ρ(1450)→π+π-)=0.307±0.084(stat)±0.082(sys).

Published
2017

26. Dalitz plot analyses of J /ψ →π+π-π0, J /ψ →k+K-π0, and J /ψ → Ks0 K±π∓ produced via e+e- annihilation with initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Szczepaniak, AP, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Pennington, MR, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, and Gradl, W

Abstract

We study the processes e+e-→γISRJ/ψ, where J/ψ→π+π-π0, J/ψ→K+K-π0, and J/ψ→KS0K±π∓ using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the ϒ(nS) (n=2,3,4) resonances. We measure the ratio of branching fractions R1=B(J/ψ→K+K-π0)B(J/ψ→π+π-π0) and R2=B(J/ψ→KS0K±π∓)B(J/ψ→π+π-π0). We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ→π+π-π0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450) in all three J/ψ decay modes and measure the relative branching fraction: R(ρ(1450))=B(ρ(1450)→K+K-)B(ρ(1450)→π+π-)=0.307±0.084(stat)±0.082(sys).

Published
2017

27. Cross sections for the reactions e+e-→KS0KL0π0, KS0KL0η, and KS0KL0π0π0 from events with initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Gradl, W, Griessinger, K, and Hafner, A

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, hep-ph, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes e+e-→KS0KL0π0γ, KS0KL0ηγ, and KS0KL0π0π0γ, where the photon is radiated from the initial state, providing cross section measurements for the hadronic final states over a continuum of center-of-mass energies. The results are based on 469 fb-1 of data collected at or near the ϒ(4S) resonance with the BABAR detector at SLAC. We present the first measurements of the e+e-→KS0KL0π0, KS0KL0η, and KS0KL0π0π0 cross sections up to a center-of-mass energy of 4 GeV and study their intermediate resonance structures. We observe J/ψ decays to all of these final states for the first time, present measurements of their J/ψ branching fractions, and search for ψ(2S) decays.

Published
2017

28. Cross sections for the reactions e+e- → KS0 KL0 π0, KS0 KL0 η, and KS0 KL0 π0π0 from events with initial-state radiation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Gradl, W, Griessinger, K, and Hafner, A

Subjects
hep-ex, hep-ph, physics.ins-det
Abstract

We study the processes e+e-→KS0KL0π0γ, KS0KL0ηγ, and KS0KL0π0π0γ, where the photon is radiated from the initial state, providing cross section measurements for the hadronic final states over a continuum of center-of-mass energies. The results are based on 469 fb-1 of data collected at or near the ϒ(4S) resonance with the BABAR detector at SLAC. We present the first measurements of the e+e-→KS0KL0π0, KS0KL0η, and KS0KL0π0π0 cross sections up to a center-of-mass energy of 4 GeV and study their intermediate resonance structures. We observe J/ψ decays to all of these final states for the first time, present measurements of their J/ψ branching fractions, and search for ψ(2S) decays.

Published
2017

29. Measurement of the B0 →d∗-π+π-π+ branching fraction

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Betti, F, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, and Hafner, A

Abstract

Using a sample of (470.9±2.8)×106 BB pairs, we measure the decay branching fraction B(B0→D∗-π+π-π+)=(7.26±0.11±0.31)×10-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be helpful in studies of lepton universality by measuring B(B0→D∗-τ+ντ) using τ+→π+π-π+ντ decays, normalized to B(B0→D∗-π+π-π+).

Published
2016

30. Measurement of the B0→D*-π+π-π+ branching fraction

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Betti, F, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, and Hafner, A

Subjects
Mathematical Physics, Particle and High Energy Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Using a sample of (470.9±2.8)×106 BB pairs, we measure the decay branching fraction B(B0→D∗-π+π-π+)=(7.26±0.11±0.31)×10-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be helpful in studies of lepton universality by measuring B(B0→D∗-τ+ντ) using τ+→π+π-π+ντ decays, normalized to B(B0→D∗-π+π-π+).

Published
2016

31. Search for a muonic dark force at B a B ar

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, and Barlow, RJ

Abstract

Many models of physics beyond the standard model predict the existence of new Abelian forces with new gauge bosons mediating interactions between "dark sectors" and the standard model. We report a search for a dark boson Z′ coupling only to the second and third generations of leptons in the reaction e+e-→μ+μ-Z′,Z′→μ+μ- using 514 fb-1 of data collected by the BABAR experiment. No significant signal is observed for Z′ masses in the range 0.212-10 GeV. Limits on the coupling parameter g′ as low as 7×10-4 are derived, leading to improvements in the bounds compared to those previously derived from neutrino experiments.

Published
2016

32. Tests of CPT symmetry in B0- B 0 mixing and in B0 →c c K0 decays TESTS of CPT SYMMETRY in B0- B 0 ... J. P. LEES et al.

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, and Barlow, RJ

Abstract

Using the eight time dependences e-Γt(1+CicosΔmt+SisinΔmt) for the decays ϒ(4S)→B0B 0→fjfk, with the decay into a flavor-specific state fj=±X before or after the decay into a CP eigenstate fk=cc KS,L, as measured by the BABAR experiment, we determine the three CPT-sensitive parameters Re(z) and Im(z) in B0-B 0 mixing and |Ā/A| in B0→cc K0 decays. We find Im(z)=0.010±0.030±0.013, Re(z)=-0.065±0.028±0.014, and |Ā/A|=0.999±0.023±0.017, in agreement with CPT symmetry.

Published
2016

33. Tests of CPT symmetry in B0-B¯0 mixing and in B0→cc¯K0 decays

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, and Barlow, RJ

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Using the eight time dependences e-Γt(1+CicosΔmt+SisinΔmt) for the decays ϒ(4S)→B0B 0→fjfk, with the decay into a flavor-specific state fj=±X before or after the decay into a CP eigenstate fk=cc KS,L, as measured by the BABAR experiment, we determine the three CPT-sensitive parameters Re(z) and Im(z) in B0-B 0 mixing and |Ā/A| in B0→cc K0 decays. We find Im(z)=0.010±0.030±0.013, Re(z)=-0.065±0.028±0.014, and |Ā/A|=0.999±0.023±0.017, in agreement with CPT symmetry.

Published
2016

34. Measurement of the neutral D meson mixing parameters in a time-dependent amplitude analysis of the D0 →π+π-π0 decay

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, and Barlow, RJ

Abstract

We perform the first measurement on the D0-D0 mixing parameters using a time-dependent amplitude analysis of the decay D0→π+π-π0. The data were recorded with the BABAR detector at center-of-mass energies at and near the υ(4S) resonance, and correspond to an integrated luminosity of approximately 468.1 fb-1. The neutral D meson candidates are selected from D∗(2010)+→D0πs+ decays where the flavor at the production is identified by the charge of the low-momentum pion, πs+. The measured mixing parameters are x=(1.5±1.2±0.6)% and y=(0.2±0.9±0.5)%, where the quoted uncertainties are statistical and systematic, respectively.

Published
2016

35. Measurement of the neutral D meson mixing parameters in a time-dependent amplitude analysis of the D0→π+π-π0 decay

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, and Barlow, RJ

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We perform the first measurement on the D0-D0 mixing parameters using a time-dependent amplitude analysis of the decay D0→π+π-π0. The data were recorded with the BABAR detector at center-of-mass energies at and near the υ(4S) resonance, and correspond to an integrated luminosity of approximately 468.1 fb-1. The neutral D meson candidates are selected from D∗(2010)+→D0πs+ decays where the flavor at the production is identified by the charge of the low-momentum pion, πs+. The measured mixing parameters are x=(1.5±1.2±0.6)% and y=(0.2±0.9±0.5)%, where the quoted uncertainties are statistical and systematic, respectively.

Published
2016

36. Time-dependent analysis of B0 → KS0 π-π+γ decays and studies of the K+π-π+ system in B+ →k+π-π+γ decays

Author

Del Amo Sanchez, P, Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Franco Sevilla, M, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, and Arnaud, N

Abstract

We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π-π+γ, using a sample of 471×106 (4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ

Published
2016

37. Measurement of angular asymmetries in the decays B →k∗+

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Franco Sevilla, M, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, and Ahmed, H

Abstract

We study the lepton forward-backward asymmetry AFB and the longitudinal K∗ polarization FL, as well as an observable P2 derived from them, in the rare decays B→K∗+, where + is either e+e- or μ+μ-, using the full sample of 471 million BB-events collected at the (4S) resonance with the BABAR, detector at the PEP-II e+e- collider. We separately fit and report results for the K∗0(892)+ and K∗+(892)+ final states, as well as their combination K∗+, in five disjoint dilepton mass-squared bins. An angular analysis of B+→K∗++ decays is presented here for the first time.

Published
2016

38. Time-dependent analysis of B0→KS0π-π+γ decays and studies of the K+π-π+ system in B+→K+π-π+γ decays

Author

del Amo Sanchez, P, Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, AV, and Arnaud, N

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences
Abstract

We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π-π+γ, using a sample of 471×106 (4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ

Published
2016

39. Search for mixing-induced CP violation using partial reconstruction of B ¯ 0 →d∗+X- ν ¯ and kaon tagging SEARCH for MIXING-INDUCED CP VIOLATION ⋯ J. P. LEES et al.

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, YG, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Franco Sevilla, M, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

Abstract

We describe in detail a previously published measurement of CP violation in B0-B¯0 oscillations, based on an integrated luminosity of 425.7 fb-1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million B¯0→D∗+-ν¯ decays selected with partial reconstruction of the D∗+ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP=(N(B0B0)-N(B¯0B¯0))/(N(B0B0)+N(B¯0B¯0))=(0.06±0.17-0.32+0.38)% corresponding to ΔCP=1-|q/p|=(0.29±0.84-1.61+1.88)×10-3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.

Published
2016

40. Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences
Abstract

We describe in detail a previously published measurement of CP violation in B0-B¯0 oscillations, based on an integrated luminosity of 425.7 fb-1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million B¯0→D∗+-ν¯ decays selected with partial reconstruction of the D∗+ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP=(N(B0B0)-N(B¯0B¯0))/(N(B0B0)+N(B¯0B¯0))=(0.06±0.17-0.32+0.38)% corresponding to ΔCP=1-|q/p|=(0.29±0.84-1.61+1.88)×10-3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.

Published
2016

41. Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Pennington, MR, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, and Schubert, KR

Abstract

We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.

Published
2016

42. Measurement of the I=1/2 Kπ S-wave amplitude from Dalitz plot analyses of ηc→KK¯π in two-photon interactions

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, Yu I, Solodov, EP, Todyshev, K Yu, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Pennington, MR, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, Sw, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, and Schubert, KR

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.

Published
2016

43. Collins asymmetries in inclusive charged KK and Kπ pairs produced in e+e- annihilation

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, and Ahmed, H

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences
Abstract

We present measurements of Collins asymmetries in the inclusive process e+e-→h1h2X, h1h2=KK, Kπ, ππ, at the center-of-mass energy of 10.6 GeV, using a data sample of 468 fb-1 collected by the BABAR experiment at the PEP-II B factory at SLAC National Accelerator Center. Considering hadrons in opposite thrust hemispheres of hadronic events, we observe clear azimuthal asymmetries in the ratio of unlike sign to like sign, and unlike sign to all charged h1h2 pairs, which increase with hadron energies. The Kπ asymmetries are similar to those measured for the ππ pairs, whereas those measured for high-energy KK pairs are, in general, larger.

Published
2015

44. Study of the e+e-→K+K- reaction in the energy range from 2.6 to 8.0 GeV

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, and Gritsan, AV

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences
Abstract

The e+e-→K+K- cross section and charged-kaon electromagnetic form factor are measured in the e+e- center-of-mass energy range (E) from 2.6 to 8.0 GeV using the initial-state radiation technique with an undetected photon. The study is performed using 469fb-1 of data collected with the BABAR detector at the PEP-II2 e+e- collider at center-of-mass energies near 10.6 GeV. The form factor is found to decrease with energy faster than 1/E2 and approaches the asymptotic QCD prediction. Production of the K+K- final state through the J/ψ and ψ(2S) intermediate states is observed. The results for the kaon form factor are used together with data from other experiments to perform a model-independent determination of the relative phases between electromagnetic (single-photon) and strong amplitudes in J/ψ and ψ(2S)→K+K- decays. The values of the branching fractions measured in the reaction e+e-→K+K- are shifted relative to their true values due to interference between resonant and nonresonant amplitudes. The values of these shifts are determined to be about ±5% for the J/ψ meson and ±15% for the ψ(2S) meson.

Published
2015

45. Measurement of initial-state–final-state radiation interference in the processes e+e-→μ+μ-γ and e+e-→π+π-γ

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Ford, WT, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, and Gritsan, AV

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences
Abstract

Charge asymmetry in the processes e+e-→μ+μ-γ and e+e-→π+π-γ is measured using 232 fb-1 of data collected with the BABAR detector at e+e- center-of-mass energies near 10.58 GeV. An observable is introduced and shown to be very robust against detector asymmetries while keeping a large sensitivity to the physical charge asymmetry that results from the interference between initial- and final-state radiation (FSR). The asymmetry is determined as a function of the invariant mass of the final-state tracks from production threshold to a few GeV/c2. It is compared to the expectation from QED for e+e-→μ+μ-γ, and from theoretical models for e+e-→π+π-γ. A clear interference pattern is observed in e+e-→π+π-γ, particularly in the vicinity of the f2(1270) resonance. The inferred rate of lowest-order FSR production is consistent with the QED expectation for e+e-→μ+μ-γ, and is negligibly small for e+e-→π+π-γ.

Published
2015

46. Search for a light Higgs resonance in radiative decays of the ϒ(1S) with a charm tag

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

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

A search is presented for the decay (1S)→γA0, A0→cc¯, where A0 is a candidate for the CP-odd Higgs boson of the next-to-minimal supersymmetric standard model. The search is based on data collected with the BABAR detector at the (2S) resonance. A sample of (1S) mesons is selected via the decay (2S)→π+π-(1S). The A0→cc¯ decay is identified through the reconstruction of hadronic D0, D+, and D∗(2010)+ meson decays. No significant signal is observed. The measured 90% confidence-level upper limits on the product branching fraction B((1S)→γA0)×B(A0→cc¯) range from 7.4×10-5 to 2.4×10-3 for A0 masses from 4.00 to 8.95GeV/c2 and 9.10 to 9.25GeV/c2, where the region between 8.95 and 9.10GeV/c2 is excluded because of background from (2S)→γχbJ(1P), χbJ(1P)→γ(1S) decays.

Published
2015

47. Dalitz plot analyses of B0→D−D0K+ and B+→D¯0D0K+ decays

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Campagnari, C, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Vetere, M Lo, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, and Mallik, U

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

We present Dalitz plot analyses for the decays of B mesons to D-D0K+ and D¯0D0K+. We report the observation of the Ds1∗(2700)+ resonance in these two channels and obtain measurements of the mass M(Ds1∗(2700)+)=2699-7+14MeV/c2 and of the width Γ(Ds1∗(2700)+)=127-19+24MeV, including statistical and systematic uncertainties. In addition, we observe an enhancement in the D0K+ invariant mass around 2350-2500MeV/c2 in both decays B0→D-D0K+ and B+→D¯0D0K+, which we are not able to interpret. The results are based on 429fb-1 of data containing 471×106BB¯ pairs collected at the (4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory.

Published
2015

48. Measurement of the D0→π-e+νe differential decay branching fraction as a function of q2 and study of form factor parametrizations

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Vetere, M Lo, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, and Lacker, HM

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

Based on a sample of 500 million e+e-→cc¯ events recorded by the BABAR detector at c.m. energies of close to 10.6 GeV, we report on a study of the decay D0→π-e+νe. We measure the ratio of branching fractions, RD=B(D0→π-e+νe)/B(D0→K-π+)=0.0713±0.0017stat±0.0024syst, and use the present world average for B(D0→K-π+) to obtain B(D0→π-e+νe)=(2.770±0.068stat±0.092syst±0.037ext)×10-3 where the third error accounts for the uncertainty on the branching fraction for the reference channel. The measured dependence of the differential branching fraction on q2, the four-momentum transfer squared between the D and the π meson, is compared to various theoretical predictions for the hadronic form factor, f+,Dπ(q2), and the normalization |Vcd|×f+,Dπ(q2=0)=0.1374±0.0038stat±0.0022syst±0.0009ext. is extracted from a fit to data. Using the most recent LQCD prediction of f+,Dπ(q2=0)=0.666±0.029, we obtain |Vcd|=0.206±0.007exp±0.009LQCD. Assuming, instead, |Vcd|=|Vus|=0.2252±0.0009, we obtain f+,Dπ(q2=0)=0.610±0.020exp±0.005ext. The q2 dependence of f+,Dπ(q2) is compared to a variety of multipole parametrizations. This information is applied to B0→π-e+νe decays and, combined with an earlier B0→π-e+νe measurement by BABAR, is used to derive estimates of |Vub|.

Published
2015

49. Measurement of the branching fractions of the radiative leptonic τ decays τ→eγνν¯ and τ→μγνν¯ at BABAR

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Dey, B, Gary, JW, Long, O, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Monge, MR, Passaggio, S, Patrignani, C, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, Mallik, U, Chen, C, Cochran, J, and Prell, S

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

We perform a measurement of the τ→lγνν¯ (l=e,μ) branching fractions for a minimum photon energy of 10 MeV in the τ rest frame, using 431fb-1 of e+e- collisions collected at the center-of-mass energy of the (4S) resonance with the BABAR detector at the PEP-II storage rings. We find B(τ→μγνν¯)=(3.69±0.03±0.10)×10-3 and B(τ→eγνν¯)=(1.847±0.015±0.052)×10-2, where the first quoted error is statistical and the second is systematic. These results are substantially more precise than previous measurements.

Published
2015

50. Observation of the baryonic decay B¯0→Λc+p¯K-K+

Author

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Kerth, LT, Kolomensky, Yu G, Lee, MJ, Lynch, G, Koch, H, Schroeder, T, 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, Lankford, AJ, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, Sevilla, M Franco, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Vazquez, W Panduro, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Vetere, M Lo, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, and Dauncey, PD

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

We report the observation of the baryonic decay B¯0→Λc+p¯K-K+ using a data sample of 471×106 BB¯ pairs produced in e+e- annihilations at s=10.58GeV. This data sample was recorded with the BABAR detector at the PEP-II storage ring at SLAC. We find B(B¯0→Λc+p¯K-K+)=(2.5±0.4(stat)±0.2(syst)±0.6B(Λc+))×10-5, where the uncertainties are statistical, systematic, and due to the uncertainty of the Λc+→pK-π+ branching fraction, respectively. The result has a significance corresponding to 5.0 standard deviations, including all uncertainties. For the resonant decay B¯0→Λc+p¯φ, we determine the upper limit B(B¯0→Λc+p¯φ)

Published
2015

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