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1. The selection of paired watersheds affects the assessment of wildfire hydrological impacts

Author: Nigro, M., Penna, D., Baneschi, I., Castelli, G., Dani, A., Menichini, M., Piemontese, L., Trucchi, P., Preti, F., Doveri, M., and Giannecchini, R.
Published: 2024
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2. 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

3. 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

4. First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data

Author: BaBar, The, Collaborations, Belle, Abdesselam, A., Adachi, I., Adametz, A., Adye, T., Ahmed, H., Aihara, H., Akar, S., Alam, M. S., Albert, J., Said, S. Al, Andreassen, R., Angelini, C., Anulli, F., Arinstein, K., Arnaud, N., Asner, D. M., Aston, D., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Band, H. R., Banerjee, Sw., Barberio, E., Bard, D. J., Barlow, R. J., Batignani, G., Beaulieu, A., Bellis, M., Ben-Haim, E., Bernard, D., Bernlochner, F. U., Bettarini, S., Bettoni, D., Bevan, A. J., Bhardwaj, V., Bhuyan, B., Bianchi, F., Biasini, M., Biswal, J., Blinov, V. E., Bloom, P. C., Bobrov, A., Bomben, M., Bondar, A., Bonneaud, G. R., Bonvicini, G., Bozek, A., Bozzi, C., Bracko, M., Briand, H., Browder, T. E., Brown, D. N., Bünger, C., Burchat, P. R., Buzykaev, A. R., Calabrese, R., Calcaterra, A., Calderini, G., Carpinelli, M., Cartaro, C., Casarosa, G., Cenci, R., Cervenkov, D., Chang, P., Chao, D. S., Chauveau, J., Cheaib, R., Chekelian, V., Chen, A., Chen, C., Cheng, C. H., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, H. H. F., Choi, S. -K., Chrzaszcz, M., Cibinetto, G., Cinabro, D., Cochran, J., Coleman, J. P., Contri, R., Convery, M. R., Cowan, G., Cowan, R., Cremaldi, L., Dalseno, J., Dasu, S., Davier, M., Davis, C. L., De Mori, F., De Nardo, G., Denig, A. G., Derkach, D., de Sangro, R., Dey, B., Di Lodovico, F., Dingfelder, J., Dittrich, S., Dolezal, Z., Dorfan, J., Drasal, Z., Drutskoy, A., Druzhinin, V. P., Dubois-Felsmann, G. P., Dunwoodie, W., Dutta, D., Ebert, M., Echenard, B., Eidelman, S., Eigen, G., Eisner, A. M., Emery, S., Ernst, J. A., Faccini, R., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., Flood, K. T., Ford, W. T., Forti, F., Sevilla, M. Franco, Fritsch, M., Fry, J. R., Fulsom, B. G., Gabathuler, E., Gabyshev, N., Gamba, D., Garmash, A., Gary, J. W., Garzia, I., Gaspero, M., Gaur, V., Gaz, A., Gershon, T. J., Getzkow, D., Gillard, R., Gioi, L. Li, Giorgi, M. A., Glattauer, R., Godang, R., Goh, Y. M., Goldenzweig, P., Golob, B., Golubev, V. B., Gorodeisky, R., Gradl, W., Graham, M. T., Grauges, E., Griessinger, K., Gritsan, A. V., Grosdidier, G., Grünberg, O., Guttman, N., Haba, J., Hafner, A., Hamilton, B., Hara, T., Harrison, P. F., Hast, C., Hayasaka, K., Hayashii, H., Hearty, C., He, X. H., Hess, M., Hitlin, D. G., Hong, T. M., Honscheid, K., Hou, W. -S., Hsiung, Y. B., Huard, Z., Hutchcroft, D. E., Iijima, T., Inguglia, G., Innes, W. R., Ishikawa, A., Itoh, R., Iwasaki, Y., Izen, J. M., Jaegle, I., Jawahery, A., Jessop, C. P., Joffe, D., Joo, K. K., Julius, T., Kang, K. H., Kass, R., Kawasaki, T., Kerth, L. T., Khan, A., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, J. H., Kim, K. T., Kim, P., Kim, S. H., Kim, Y. J., King, G. J., Kinoshita, K., Ko, B. R., Koch, H., Kodys, P., Kolomensky, Yu. G., Korpar, S., Kovalskyi, D., Kowalewski, R., Kravchenko, E. A., Krizan, P., Krokovny, P., Kuhr, T., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lacker, H. M., Lafferty, G. D., Lanceri, L., Lange, D. J., Lankford, A. J., Latham, T. E., Leddig, T., Diberder, F. Le, Lee, D. H., Lee, I. S., Lee, M. J., Lees, J. P., Leith, D. W. G. S., Leruste, Ph., Lewczuk, M. J., Lewis, P., Libby, J., Lockman, W. S., Long, O., Pegna, D. Lopes, LoSecco, J. M., Lou, X. C., Lueck, T., Luitz, S., Lukin, P., Luppi, E., Lusiani, A., Luth, V., Lutz, A. M., Lynch, G., MacFarlane, D. B., Malaescu, B., Mallik, U., Manoni, E., Marchiori, G., Margoni, M., Martellotti, S., Martinez-Vidal, F., Masuda, M., Mattison, T. S., Matvienko, D., McKenna, J. A., Meadows, B. T., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Monge, M. R., Moon, H. K., Morandin, M., Muller, D. R., Mussa, R., Nakano, E., Nakazawa, H., Nakao, M., Nanut, T., Nayak, M., Neal, H., Neri, N., Nisar, N. K., Nishida, S., Nugent, I. M., Oberhof, B., Ocariz, J., Ogawa, S., Okuno, S., Olaiya, E. O., Olsen, J., Ongmongkolkul, P., Onorato, G., Onuchin, A. P., Onuki, Y., Ostrowicz, W., Oyanguren, A., Pakhlova, G., Pakhlov, P., Palano, A., Pal, B., Palombo, F., Pan, Y., Vazquez, W. Panduro, Paoloni, E., Park, C. W., Park, H., Passaggio, S., Patel, P. M., Patrignani, C., Patteri, P., Payne, D. J., Pedlar, T. K., Peimer, D. R., Peruzzi, I. M., Pesantez, L., Pestotnik, R., Petric, M., Piccolo, M., Piemontese, L., Piilonen, L. E., Pilloni, A., Piredda, G., Playfer, S., Poireau, V., Porter, F. C., Posocco, M., Prasad, V., Prell, S., Prepost, R., Puccio, E. M. T., Pulliam, T., Purohit, M. V., Pushpawela, B. G., Rama, M., Randle-Conde, A., Ratcliff, B. N., Raven, G., Ribezl, E., Richman, J. D., Ritchie, J. L., Rizzo, G., Roberts, D. A., Robertson, S. H., Röhrken, M., Roney, J. M., Roodman, A., Rossi, A., Rostomyan, A., Rotondo, M., Roudeau, P., Sacco, R., Sakai, Y., Sandilya, S., Santelj, L., Santoro, V., Sanuki, T., Sato, Y., Savinov, V., Schindler, R. H., Schneider, O., Schnell, G., Schroeder, T., Schubert, K. R., Schumm, B. A., Schwanda, C., Schwartz, A. J., Schwitters, R. F., Sciacca, C., Seiden, A., Sekula, S. J., Senyo, K., Seon, O., Serednyakov, S. I., Sevior, M. E., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simard, M., Simi, G., Simon, F., Simonetto, F., Skovpen, Yu. I., Smith, A. J. S., Smith, J. G., Snyder, A., So, R. Y., Sobie, R. J., Soffer, A., Sohn, Y. -S., Sokoloff, M. D., Sokolov, A., Solodov, E. P., Solovieva, E., Spaan, B., Spanier, S. M., Staric, M., Stocchi, A., Stroili, R., Stugu, B., Su, D., Sullivan, M. K., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Summers, D. J., Sun, L., Tamponi, U., Taras, P., Tasneem, N., Teramoto, Y., Tisserand, V., Todyshev, K. Yu., Toki, W. H., Touramanis, C., Trabelsi, K., Tsuboyama, T., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Uwer, U., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Vasseur, G., Va'vra, J., Verderi, M., Vinokurova, A., Vitale, L., Vorobyev, V., Voss, C., Wagner, M. N., Wagner, S. R., Waldi, R., Walsh, J. J., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., West, C. A., Williams, K. M., Wilson, F. F., Wilson, J. R., Wisniewski, W. J., Won, E., Wormser, G., Wright, D. M., Wu, S. L., Wulsin, H. W., Yamamoto, H., Yamaoka, J., Yashchenko, S., Yuan, C. Z., Yusa, Y., Zallo, A., Zhang, C. C., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We report a measurement of the time-dependent CP asymmetry of B0->D(*)CP h0 decays, where the light neutral hadron h0 is a pi0, eta or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+ K-, K0S pi0 or K0S omega. The measurement is performed combining the final data samples collected at the Y(4S) resonance by the BaBar and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain ( 471 +/- 3 ) x 10^6 BB pairs recorded by the BaBar detector and ( 772 +/- 11 ) x 10^6, BB pairs recorded by the Belle detector. We measure the CP asymmetry parameters -eta_f S = +0.66 +/- 0.10 (stat.) +/- 0.06 (syst.) and C = -0.02 +/- 0.07 (stat.) +/- 0.03 (syst.). These results correspond to the first observation of CP violation in B0->D(*)CP h0 decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations., Comment: 9 pages, 2 figures, submitted to Physical Review Letters
Published: 2015

5. 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

6. 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

7. 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

8. New PVLAS model independent limit for the axion coupling to $\gamma\gamma$ for axion masses above 1meV

Author: Della Valle, F., Ejlli, A., Gastaldi, U., Messineo, G., Milotti, E., Pengo, R., Piemontese, L., Ruoso, G., and Zavattini, G.
Subjects: High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: During 2014 the PVLAS experiment has started data taking with a new apparatus installed at the INFN Section of Ferrara, Italy. The main target of the experiment is the observation of magnetic birefringence of vacuum. According to QED, the ellipticity generated by the magnetic birefringence of vacuum in the experimental apparatus is expected to be $\psi^{\rm(QED)} \approx 5\times10^{-11}$. No ellipticity signal is present so far with a noise floor $\psi^{\rm(noise)} \approx 2.5\times10^{-9}$ after 210 hours of data taking. The resulting ellipticity limit provides the best model independent upper limit on the coupling of axions to $\gamma\gamma$ for axion masses above $10^{-3}$eV.
Published: 2014

9. First results from the new PVLAS apparatus: a new limit on vacuum magnetic birefringence

Author: Della Valle, F., Milotti, E., Ejlli, A., Messineo, G., Piemontese, L., Zavattini, G., Gastaldi, U., Pengo, R., and Ruoso, G.
Subjects: Quantum Physics, Physics - Optics
Abstract: Several groups are carrying out experiments to observe and measure vacuum magnetic birefringence, predicted by Quantum Electrodynamics (QED). We have started running the new PVLAS apparatus installed in Ferrara, Italy, and have measured a noise floor value for the unitary field magnetic birefringence of vacuum $\Delta n_u^{\rm (vac)}= (4\pm 20) \times 10^{-23}$ T$^{-2}$ (the error represents a 1$\sigma$ deviation). This measurement is compatible with zero and hence represents a new limit on vacuum magnetic birefringence deriving from non linear electrodynamics. This result reduces to a factor 50 the gap to be overcome to measure for the first time the value of $\Delta n_u^{\rm (vac,QED)}$ predicted by QED: $\Delta n_u^{\rm (vac,QED)}= 4\times 10^{-24}$ ~T$^{-2}$. These birefringence measurements also yield improved model-independent bounds on the coupling constant of axion-like particles to two photons, for masses greater than 1 meV, along with a factor two improvement of the fractional charge limit on millicharged particles (fermions and scalars), including neutrinos.
Published: 2014
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10. The Physics of the B Factories

Author: Bevan, A. J., Golob, B., Mannel, Th., Prell, S., Yabsley, B. D., Abe, K., Aihara, H., Anulli, F., Arnaud, N., Aushev, T., Beneke, M., Beringer, J., Bianchi, F., Bigi, I. I., Bona, M., Brambilla, N., rodzicka, J. B, Chang, P., Charles, M. J., Cheng, C. H., Cheng, H. -Y., Chistov, R., Colangelo, P., Coleman, J. P., Drutskoy, A., Druzhinin, V. P., Eidelman, S., Eigen, G., Eisner, A. M., Faccini, R., Flood, K. T ., Gambino, P., Gaz, A., Gradl, W., Hayashii, H., Higuchi, T., Hulsbergen, W. D., Hurth, T., Iijima, T., Itoh, R., Jackson, P. D., Kass, R., Kolomensky, Yu. G., Kou, E., Križan, P., Kronfeld, A., Kumano, S., Kwon, Y. J., Latham, T. E., Leith, D. W. G. S., Lüth, V., Martinez-Vidal, F., Meadows, B. T., Mussa, R., Nakao, M., Nishida, S., Ocariz, J., Olsen, S. L., Pakhlov, P., Pakhlova, G., Palano, A., Pich, A., Playfer, S., Poluektov, A., Porter, F. C., Robertson, S. H., Roney, J. M., Roodman, A., Sakai, Y., Schwanda, C., Schwartz, A. J., Seidl, R., Sekula, S. J., Steinhauser, M., Sumisawa, K., Swanson, E. S., Tackmann, F., Trabelsi, K., Uehara, S., Uno, S., van der Water, R., Vasseur, G., Verkerke, W., Waldi, R., Wang, M. Z., Wilson, F. F., Zupan, J., Zupanc, A., Adachi, I., Albert, J., Banerjee, Sw., Bellis, M., Ben-Haim, E., Biassoni, P., Cahn, R. N., Cartaro, C., Chauveau, J., Chen, C., Chiang, C. C., Cowan, R., Dalseno, J., Davier, M., Davies, C., Dingfelder, J. C., nard, B. Eche, Epifanov, D., Fulsom, B. G., Gabareen, A. M., Gary, J. W., Godang, R., Graham, M. T., Hafner, A., Hamilton, B., Hartmann, T., Hayasaka, K., Hearty, C., Iwasaki, Y., Khodjamirian, A., Kusaka, A., Kuzmin, A., Lafferty, G. D., Lazzaro, A., Li, J., Lindemann, D., Long, O., Lusiani, A., Marchiori, G., Martinelli, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Muller, D. R., Nakazawa, H., Ongmongkolkul, P., Pacetti, S., Palombo, F., Pedlar, T. K., Piilonen, L. E., Pilloni, A., Poireau, V., Prothmann, K., Pulliam, T., Rama, M., Ratcliff, B. N., Roudeau, P., Schrenk, S., Schroeder, T., Schubert, K. R., Shen, C. P., Shwartz, B., Soffer, A., Solodov, E. P., Somov, A., Starič, M., Stracka, S., Telnov, A. V., Todyshev, K. Yu., Tsuboyama, T., Uglov, T., Vinokurova, A., Walsh, J. J., Watanabe, Y., Won, E., Wormser, G., Wright, D. H., Ye, S., Zhang, C. C., Abachi, S., Abashian, A., Abe, N., Abe, R., Abe, T., Abrams, G. S., Adam, I., Adamczyk, K., Adametz, A., Adye, T., Agarwal, A., Ahmed, H., Ahmed, M., Ahmed, S., Ahn, B. S., Ahn, H. S., Aitchison, I. J. R., Akai, K., Akar, S., Akatsu, M., Akemoto, M., Akhmetshin, R., Akre, R., Alam, M. S., Albert, J. N., Aleksan, R., Alexander, J. P., Alimonti, G., Allen, M. T., Allison, J., Allmendinger, T., Alsmiller, J. R. G., Altenburg, D., Alwyn, K. E., An, Q., Anderson, J., Andreassen, R., Andreotti, D., Andreotti, M., Andress, J. C., Angelini, C., Anipko, D., Anjomshoaa, A., Anthony, P. L., Antillon, E. A., Antonioli, E., Aoki, K., Arguin, J. 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T., De Mori, F., De Domenico, G., De Groot, N., De la Vaissière, C., de la Vaissière, Ch., de Lesquen, A., De Nardo, G., de Sangro, R., De Silva, A., DeBarger, S., Decker, F. J., Sanchez, P. del Amo, Del Buono, L., Del Gamba, V., del Re, D., Della Ricca, G., Denig, A. G., Derkach, D., Derrington, I. M., DeStaebler, H., Destree, J., Devmal, S., Dey, B., Di Girolamo, B., Di Marco, E., Dickopp, M., Dima, M. O., Dittrich, S., Dittongo, S., Dixon, P., Dneprovsky, L., Dohou, F., Doi, Y., Doležal, Z., Doll, D. A., Donald, M., Dong, L., Dong, L. Y., Dorfan, J., Dorigo, A., Dorsten, M. P., Dowd, R., Dowdell, J., Drásal, Z., Dragic, J., Drummond, B. W., Dubitzky, R. S., Dubois-Felsmann, G. P., Dubrovin, M. S., Duh, Y. C., Duh, Y. T., Dujmic, D., Dungel, W., Dunwoodie, W., Dutta, D., Dvoretskii, A., Dyce, N., Ebert, M., Eckhart, E. A., Ecklund, S., Eckmann, R., Eckstein, P., Edgar, C. L., Edwards, A. J., Egede, U., Eichenbaum, A. 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A., Natkaniec, Z., Nauenberg, U., Nayak, M., Neal, H., Nedelkovska, E., Negrini, M., Neichi, K., Nelson, D., Nelson, S., Neri, N., Nesom, G., Neubauer, S., Newman-Coburn, D., Ng, C., Nguyen, X., Nicholson, H., Niebuhr, C., Nief, J. Y., Niiyama, M., Nikolich, M. B., Nisar, N. K., Nishimura, K., Nishio, Y., Nitoh, O., Nogowski, R., Noguchi, S., Nomura, T., Nordby, M., Nosochkov, Y., Novokhatski, A., Nozaki, S., Nozaki, T., Nugent, I. M., O'Grady, C. P., O'Neale, S. W., O'Neill, F. G., Oberhof, B., Oddone, P. J., Ofte, I., Ogawa, A., Ogawa, K., Ogawa, S., Ogawa, Y., Ohkubo, R., Ohmi, K., Ohnishi, Y., Ohno, F., Ohshima, T., Ohshima, Y., Ohuchi, N., Oide, K., Oishi, N., Okabe, T., Okazaki, N., Okazaki, T., Okuno, S., Olaiya, E. O., Olivas, A., Olley, P., Olsen, J., Ono, S., Onorato, G., Onuchin, A. P., Onuki, Y., Ooba, T., Orimoto, T. J., Oshima, T., Osipenkov, I. L., Ostrowicz, W., Oswald, C., Otto, S., Oyang, J., Oyanguren, A., Ozaki, H., Ozcan, V. E., Paar, H. 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R., Schietinger, T., Schilling, C. J., Schindler, R. H., Schmid, S., Schmitz, R. E., Schmuecker, H., Schneider, O., Schnell, G., Schönmeier, P., Schofield, K. C., Schott, G., Schröder, H., Schram, M., Schubert, J., Schümann, J., Schultz, J., Schumm, B. A., Schune, M. H., Schwanke, U., Schwarz, H., Schwiening, J., Schwierz, R., Schwitters, R. F., Sciacca, C., Sciolla, G., Scott, I. J., Seeman, J., Seiden, A., Seitz, R., Seki, T., Sekiya, A. I., Semenov, S., Semmler, D., Sen, S., Senyo, K., Seon, O., Serbo, V. V., Serednyakov, S. I., Serfass, B., Serra, M., Serrano, J., Settai, Y., Seuster, R., Sevior, M. E., Shakhova, K. V., Shang, L., Shapkin, M., Sharma, V., Shebalin, V., Shelkov, V. G., Shen, B. C., Shen, D. Z., Shen, Y. T., Sherwood, D. J., Shibata, T., Shibata, T. A., Shibuya, H., Shidara, T., Shimada, K., Shimoyama, M., Shinomiya, S., Shiu, J. G., Shorthouse, H. W., Shpilinskaya, L. I., Sibidanov, A., Sicard, E., Sidorov, A., Sidorov, V., Siegle, V., Sigamani, M., Simani, M. 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M., Zhulanov, V., Ziegler, T., Ziegler, V., Zioulas, G., Zisman, M., Zito, M., Zürcher, D., Zwahlen, N., Zyukova, O., Živko, T., and Žontar, D.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and data taking related issues. Part B discusses tools and methods used by the experiments in order to obtain results. The results themselves can be found in Part C. Please note that version 3 on the archive is the auxiliary version of the Physics of the B Factories book. This uses the notation alpha, beta, gamma for the angles of the Unitarity Triangle. The nominal version uses the notation phi_1, phi_2 and phi_3. Please cite this work as Eur. Phys. J. C74 (2014) 3026., Comment: 928 pages, version 3 (arXiv:1406.6311v3) corresponds to the alpha, beta, gamma version of the book, the other versions use the phi1, phi2, phi3 notation
Published: 2014
Full Text: View/download PDF

11. 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, 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
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present measurements of 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

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

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

14. Search for Long-Lived Particles in e+e- Collisions

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: BABAR Collaboration, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract: We present a search for a neutral, long-lived particle L that is produced in e+ e- collisions and decays at a significant distance from the e+ e- interaction point into various flavor combinations of two oppositely charged tracks. The analysis uses an e+ e- data sample with a luminosity of 489.1 fb(-1) collected by the BABAR detector at the ϒ(4S), ϒ(3S), and ϒ(2S) resonances and just below the ϒ(4S). Fitting the two-track mass distribution in search of a signal peak, we do not observe a significant signal, and set 90% confidence level upper limits on the product of the L production cross section, branching fraction, and reconstruction efficiency for six possible two-body L decay modes as a function of the L mass. The efficiency is given for each final state as a function of the mass, lifetime, and transverse momentum of the candidate, allowing application of the upper limits to any production model. In addition, upper limits are provided on the branching fraction B(B→XsL), where Xs is a strange hadronic system.
Published: 2015

15. Search for Long-Lived Particles in e+ e- Collisions.

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, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, and Mallik, U
Subjects: BABAR Collaboration, General Physics, Mathematical Sciences, Physical Sciences, Engineering
Abstract: We present a search for a neutral, long-lived particle L that is produced in e+ e- collisions and decays at a significant distance from the e+ e- interaction point into various flavor combinations of two oppositely charged tracks. The analysis uses an e+ e- data sample with a luminosity of 489.1 fb(-1) collected by the BABAR detector at the ϒ(4S), ϒ(3S), and ϒ(2S) resonances and just below the ϒ(4S). Fitting the two-track mass distribution in search of a signal peak, we do not observe a significant signal, and set 90% confidence level upper limits on the product of the L production cross section, branching fraction, and reconstruction efficiency for six possible two-body L decay modes as a function of the L mass. The efficiency is given for each final state as a function of the mass, lifetime, and transverse momentum of the candidate, allowing application of the upper limits to any production model. In addition, upper limits are provided on the branching fraction B(B→XsL), where Xs is a strange hadronic system.
Published: 2015

16. Search for a light Higgs resonance in radiative decays of the (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, 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
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: 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

17. 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

18. 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, 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, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, and Lacker, HM
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: Based on 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

19. Measurement of the branching fractions of the radiative leptonic τ decays τ →eγν ν ¯ and τ →μγν ν ¯ at BABAR measurement of the branching fractions of the ... 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, 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 & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We perform a 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

20. 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, 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, Campagnari, C, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, and Mallik, U
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We present 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

21. 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

22. 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

23. 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

24. Study of CP Asymmetry in B0-B¯0 Mixing with Inclusive Dilepton Events

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: (BABAR Collaboration), Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract: We present a measurement of the asymmetry A_{CP} between same-sign inclusive dilepton samples ℓ^{+}ℓ^{+} and ℓ^{-}ℓ^{-} (ℓ=e, μ) from semileptonic B decays in ϒ(4S)→BB[over ¯] events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471×10^{6} BB[over ¯] pairs. The asymmetry A_{CP} allows comparison between the mixing probabilities P(B[over ¯]^{0}→B^{0}) and P(B^{0}→B[over ¯]^{0}), and therefore probes CP and T violation. The result, A_{CP}=[-3.9±3.5(stat)±1.9(syst)]×10^{-3}, is consistent with the standard model expectation.
Published: 2015

25. Study of CP asymmetry in B^{0}-B[over ¯]^{0} mixing with inclusive dilepton events.

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, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, and Lacker, HM
Subjects: (BABAR Collaboration), General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract: We present a measurement of the asymmetry A_{CP} between same-sign inclusive dilepton samples ℓ^{+}ℓ^{+} and ℓ^{-}ℓ^{-} (ℓ=e, μ) from semileptonic B decays in ϒ(4S)→BB[over ¯] events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471×10^{6} BB[over ¯] pairs. The asymmetry A_{CP} allows comparison between the mixing probabilities P(B[over ¯]^{0}→B^{0}) and P(B^{0}→B[over ¯]^{0}), and therefore probes CP and T violation. The result, A_{CP}=[-3.9±3.5(stat)±1.9(syst)]×10^{-3}, is consistent with the standard model expectation.
Published: 2015

26. Observation of the baryonic decay B ¯ 0 → Λc+ p ¯ K-K+ observation of the baryonic decay ... 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, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, 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, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, Lacker, HM, and Dauncey, PD
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We report the 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

27. 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

28. Study of B±,0 →j /ψK+K-K±,0 and search for B0 →j /ψφ at B a B ar STUDY of B±,0 →j /ψK+K-K±,0 ... 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, Yushkov, AN, Lankford, AJ, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, 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, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Schwierz, R, 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, Guido, E, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, and Prasad, V
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We study the rare B meson decays B±,0→J/ψK+K-K±,0, B±,0→J/ψφK±,0, and search for B0→J/ψφ, using 469×106 BB¯ events collected at the γ(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric energy collider. We present new measurements of branching fractions and a study of the J/ψφ mass distribution in search of new charmonium-like states. In addition, we search for the decay B0→J/ψφ and find no evidence of a signal.
Published: 2015

29. Study of B±,0→J/ψK+K-K±,0 and search for B0→J/ψϕ 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, Yushkov, AN, 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, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Schwierz, R, 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, Guido, E, Vetere, M Lo, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, and Prasad, V
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We study the rare B meson decays B±,0→J/ψK+K-K±,0, B±,0→J/ψφK±,0, and search for B0→J/ψφ, using 469×106 BB¯ events collected at the γ(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric energy collider. We present new measurements of branching fractions and a study of the J/ψφ mass distribution in search of new charmonium-like states. In addition, we search for the decay B0→J/ψφ and find no evidence of a signal.
Published: 2015

30. Erratum: Measurement of the absolute branching fractions for Ds-→ℓ-ν¯ℓ and extraction of the decay constant fDs [Phys. Rev. D 82, 091103(R) (2010)]

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
Published: 2015

31. Evidence for the decay B0 --> omega omega and search for B0 --> omega phi

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lee, M. J., Lynch, G., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Lankford, A. J., Mandelkern, M., Dey, B., Gary, J. W., Long, O., Campagnari, C., Sevilla, M. Franco, Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Schumm, B. A., Seiden, A., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Andreassen, R., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schwierz, R., 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, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Morii, M., Adametz, A., Uwer, U., Lacker, H. M., Dauncey, P. D., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Ahmed, H., Gritsan, A. V., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Bougher, J., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Patel, P. M., Robertson, S. H., Biassoni, P., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Sonnek, P., Summers, D. J., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Olsen, J., Smith, A. J. S., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Piredda, G., Buenger, C., Dittrich, S., Gruenberg, O., Hartmann, T., Leddig, T., Voss, C., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., Vasseur, G., Anulli, F., Aston, D., Bard, D. J., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Gabareen, A. M., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindemann, D., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Wang, W. F., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Ziegler, V., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Albert, J., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We describe searches for B meson decays to the charmless vector-vector final states omega omega and omega phi with 471 x 10^6 B Bbar pairs produced in e+ e- annihilation at sqrt(s) = 10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction B(B0 --> omega omega) = (1.2 +- 0.3 +0.3-0.2) x 10^-6, where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit B(B0 --> omega phi) < 0.7 x 10^-6 at 90% confidence level. These measurements provide the first evidence for the decay B0 --> omega omega, and an improvement of the upper limit for the decay B0 --> omega phi., Comment: 7 pages, 2 postscript figures
Published: 2013
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32. Measurement of the Cotton Mouton effect of water vapour

Author: Della Valle, F., Ejlli, A., Gastaldi, U., Messineo, G., Milotti, E., Pengo, R., Piemontese, L., Ruoso, G., and Zavattini, G.
Subjects: Physics - Chemical Physics, Physics - Instrumentation and Detectors
Abstract: In this paper we report on a measurement of the Cotton Mouton effect of water vapour. Measurement performed at room temperature ($T=301$ K) with a wavelength of 1064 nm gave the value $\Delta n_u = (6.67 \pm 0.45) \cdot 10^{-15}$ for the unit magnetic birefringence (1 T magnetic field and atmospheric pressure).
Published: 2013
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33. Study of the decay $\bar{B}^{0}\rightarrow\Lambda_{c}^{+}\bar{p}\pi^{+}\pi^{-}$ and its intermediate states

Author: The Babar Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Kirkby, D., Lankford, A. J., Mandelkern, M., Atmacan, H., Gary, J. W., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schumm, B. A., Seiden, A., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Morii, M., Adametz, A., Uwer, U., Lacker, H. M., Lueck, T., Dauncey, P. D., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rubin, A. E., Gritsan, A. V., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Lindemann, D., Patel, P. M., Robertson, S. H., Biassoni, P., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Olsen, J., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Voß, C., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Y\`, Ch., Aston, D., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Ahmed, H., Albert, J., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We study the decay $\bar{B}^{0}\rightarrow\Lambda_{c}^{+}\bar{p}\pi^{+}\pi^{-}$, reconstructing the \Lambda_{c}^{+} baryon in the $p K^{-}\pi^{+}$ mode, using a data sample of $467\times 10^{6}$ $B\bar{B}$ pairs collected with the BaBar detector at the PEP-2 storage rings at SLAC. We measure branching fractions for decays with intermediate $\Sigma_{c}$ baryons to be ${\cal B}[\bar{B}^{0}\rightarrow\Sigma_{c}(2455)^{++}\bar{p}\pi^{-}]=(21.3 \pm 1.0 \pm 1.0 \pm 5.5) \times 10^{-5}$, ${\cal B}[\bar{B}^{0}\rightarrow\Sigma_{c}(2520)^{++}\bar{p}\pi^{-}]=(11.5\pm 1.0 \pm 0.5 \pm 3.0)\times 10^{-5}$, ${\cal B}[\bar{B}^{0}\rightarrow\Sigma_{c}(2455)^{0}\bar{p}\pi^{+}]=(9.1 \pm 0.7 \pm 0.4 \pm 2.4)\times10^{-5}$, and ${\cal B}[\bar{B}^{0}\rightarrow\Sigma_{c}(2520)^{0}\bar{p}\pi^{+}]= (2.2 \pm 0.7 \pm 0.1\pm 0.6) \times 10^{-5}$, where the uncertainties are statistical, systematic, and due to the uncertainty on the $\Lambda_{c}^{+}\rightarrow\proton\Km\pi^{+}$ branching fraction, respectively. For decays without $\Sigma_{c}(2455)$ or $\Sigma_{c}(2520)$ resonances, we measure ${\cal B}[\bar{B}^{0}\rightarrow\Lambda_{c}^{+}\bar{p}\pi^{+}\pi^{-}]_{\mathrm{non-\Sigma_{c}}}=(79 \pm 4 \pm 4 \pm 20)\times10^{-5}$. The total branching fraction is determined to be ${\cal B}[\bar{B}^{0}\rightarrow\Lambda_{c}^{+}\bar{p}\pi^{+}\pi^{-}]_{\mathrm{total}}=(123 \pm 5 \pm 7 \pm 32)\times10^{-5}$. We examine multibody mass combinations in the resonant three-particle $\Sigma_{c}\bar{p}\pi$ final states and in the four-particle $\Lambda_{c}^{+}\bar{p}\pi^{+}\pi^{-}$ final state, and observe different characteristics for the $\bar{p}\pi$ combination in neutral versus doubly-charged $\Sigma_{c}$ decays., Comment: 20 pages, 30 figures
Published: 2013
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34. Measurements of vacuum magnetic birefringence using permanent dipole magnets: the PVLAS experiment

Author: Della Valle, F., Gastaldi, U., Messineo, G., Milotti, E., Pengo, R., Piemontese, L., Ruoso, G., and Zavattini, G.
Subjects: Quantum Physics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: The PVLAS collaboration is presently assembling a new apparatus (at the INFN section of Ferrara, Italy) to detect vacuum magnetic birefringence (VMB). VMB is related to the structure of the QED vacuum and is predicted by the Euler-Heisenberg-Weisskopf effective Lagrangian. It can be detected by measuring the ellipticity acquired by a linearly polarised light beam propagating through a strong magnetic field. Using the very same optical technique it is also possible to search for hypothetical low-mass particles interacting with two photons, such as axion-like (ALP) or millicharged particles (MCP). Here we report results of a scaled-down test setup and describe the new PVLAS apparatus. This latter one is in construction and is based on a high-sensitivity ellipsometer with a high-finesse Fabry-Perot cavity ($>4\times 10^5$) and two 0.8 m long 2.5 T rotating permanent dipole magnets. Measurements with the test setup have improved by a factor 2 the previous upper bound on the parameter $A_e$, which determines the strength of the nonlinear terms in the QED Lagrangian: $A_e^{\rm (PVLAS)} < 3.3 \times 10^{-21}$ T$^{-2}$ 95% c.l. Furthermore, new laboratory limits have been put on the inverse coupling constant of ALPs to two photons and confirmation of previous limits on the fractional charge of millicharged particles is given.
Published: 2013
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35. Bottomonium spectroscopy and radiative transitions involving the χ b J (1P,2P) states at B a B ar

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, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, 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, Roehrken, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, and Lacker, HM
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: We use (121±1) million Υ(3S) and (98±1) million Υ(2S) mesons recorded by the BABAR detector at the PEP-II e+e- collider at SLAC to perform a study of radiative transitions involving the χbJ(1P,2P) states in exclusive decays with μ+μ-γγ final states. We reconstruct twelve channels in four cascades using two complementary methods. In the first we identify both signal photon candidates in the electromagnetic calorimeter (EMC), employ a calorimeter timing-based technique to reduce backgrounds, and determine branching-ratio products and fine mass splittings. These results include the best observational significance yet for the χb0(2P)→γΥ(2S) and χb0(1P)→γΥ(1S) transitions. In the second method, we identify one photon candidate in the EMC and one which has converted into an e+e- pair due to interaction with detector material, and we measure absolute product branching fractions. This method is particularly useful for measuring Υ(3S)→γχb1,2(1P) decays. Additionally, we provide the most up-to-date derived branching fractions, matrix elements and mass splittings for χb transitions in the bottomonium system. Using a new technique, we also measure the two lowest-order spin-dependent coefficients in the nonrelativistic QCD Hamiltonian.
Published: 2014

36. Search for new π0 -like particles produced in association with a τ -lepton pair

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, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, 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, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, Prasad, V, Adametz, A, Uwer, U, and Lacker, HM
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: We report on a search in e+e- annihilations for new π0-like particles produced in association with a τ-lepton pair. These objects, with a similar mass and similar decay modes to π0 mesons, could provide an explanation for the non-asymptotic behavior of the pion-photon transition form factor observed by the BABAR Collaboration. No significant signal is observed, and limits on the production cross section at the level of 73 fb or 370 fb, depending on the model parameters, are determined at 90% confidence level. These upper limits lie below the cross section values needed to explain the BABAR form factor data.
Published: 2014

37. Bottomonium spectroscopy and radiative transitions involving the χbJ(1P,2P) states 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, 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, Roehrken, 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: We use (121±1) million Υ(3S) and (98±1) million Υ(2S) mesons recorded by the BABAR detector at the PEP-II e+e- collider at SLAC to perform a study of radiative transitions involving the χbJ(1P,2P) states in exclusive decays with μ+μ-γγ final states. We reconstruct twelve channels in four cascades using two complementary methods. In the first we identify both signal photon candidates in the electromagnetic calorimeter (EMC), employ a calorimeter timing-based technique to reduce backgrounds, and determine branching-ratio products and fine mass splittings. These results include the best observational significance yet for the χb0(2P)→γΥ(2S) and χb0(1P)→γΥ(1S) transitions. In the second method, we identify one photon candidate in the EMC and one which has converted into an e+e- pair due to interaction with detector material, and we measure absolute product branching fractions. This method is particularly useful for measuring Υ(3S)→γχb1,2(1P) decays. Additionally, we provide the most up-to-date derived branching fractions, matrix elements and mass splittings for χb transitions in the bottomonium system. Using a new technique, we also measure the two lowest-order spin-dependent coefficients in the nonrelativistic QCD Hamiltonian.
Published: 2014

38. Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

Author: BaBar Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schumm, B. A., Seiden, A., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Patteri, P., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Uwer, U., Lacker, H. M., Lueck, T., Dauncey, P. D., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Lindemann, D., Patel, P. M., Robertson, S. H., Biassoni, P., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bunger, C., Grunberg, O., Hartmann, T., Leddig, T., Voss, C., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yeche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Ahmed, H., Albert, J., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running at and just below the Y(4S) resonance. The CP-violating decay rate asymmetry A_CP is determined to be (0.35 +- 0.30 +- 0.15)%. Model-dependent and model-independent Dalitz plot analysis techniques are used to search for CP-violating asymmetries in the various intermediate states., Comment: 14 pages, 6 eps figures, to be submitted to PRD
Published: 2012
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39. Branching fraction and form-factor shape measurements of exclusive charmless semileptonic B decays, and determination of |V_{ub}

Author: BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Palano, A., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schumm, B. A., Seiden, A., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Uwer, U., Lacker, H. M., Lueck, T., Dauncey, P. D., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Lindemann, D., Patel, P. M., Robertson, S. H., Biassoni, P., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Voß, C., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yèche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Ahmed, H., Albert, J., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We report the results of a study of the exclusive charmless semileptonic decays, B^0 --> pi^- l^+ nu, B^+ --> pi^0 l^+ nu, B^+ --> omega l^+ nu, B^+ --> eta l^+ nu and B^+ --> eta^' l^+ nu, (l = e or mu) undertaken with approximately 462x10^6 B\bar{B} pairs collected at the Upsilon(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions in several bins of q^2, the square of the momentum transferred to the lepton-neutrino pair, for B^0 --> pi^- l^+ nu, B^+ --> pi^0 l^+ nu, B^+ --> omega l^+ nu and B^+ --> eta l^+ nu. From these distributions, we extract the form-factor shapes f_+(q^2) and the total branching fractions BF(B^0 --> pi^- l^+ nu) = (1.45 +/- 0.04_{stat} +/- 0.06_{syst})x10^-4 (combined pi^- and pi^0 decay channels assuming isospin symmetry), BF(B^+ --> omega l^+ nu) = (1.19 +/- 0.16_{stat} +/- 0.09_{syst})x10^-4 and BF(B^+ --> eta l^+ nu) = (0.38 +/- 0.05_{stat} +/- 0.05_{syst})x10^-4. We also measure BF(B^+ --> eta^' l^+ nu) = (0.24 +/- 0.08_{stat} +/- 0.03_{syst})x10^-4. We obtain values for the magnitude of the CKM matrix element V_{ub} by direct comparison with three different QCD calculations in restricted q^2 ranges of B --> pi l^+ nu decays. From a simultaneous fit to the experimental data over the full q^2 range and the FNAL/MILC lattice QCD predictions, we obtain |V_{ub}| = (3.25 +/- 0.31)x10^-3, where the error is the combined experimental and theoretical uncertainty., Comment: 35 pages, 14 figures, submitted to PRD
Published: 2012
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40. Observation of Time Reversal Violation in the B0 Meson System

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Palanoab, A., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schumm, B. A., Seiden, A., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Uwer, U., Lacker, H. M., Lueck, T., Dauncey, P. D., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Lindemann, D., Patel, P. M., Robertson, S. H., Biassoni, P., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Pompili, A., Posocco, M., Rotondo, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Olsen, J., Smith, A. J. S., Telnov, A. V., Anullia, F., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bunger, C., Grunberg, O., Hartmann, T., Leddig, T., Schroder, H., Voss, C., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Y`eche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Bernabeu, J., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Ahmed, H., Albert, J., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time reversal violation. The decays of entangled neutral B mesons into definite flavor states ($B^0$ or $\bar{B}^0$), and $J/\psi K_S^0$ or $c\bar{c} K_S^0$ final states (referred to as $B_+$ or $B_-$), allow comparisons between the probabilities of four pairs of T-conjugated transitions, for example, $\bar{B}^0 \rightarrow B_-$ and $B_- \rightarrow \bar{B}^0$, as a function of the time difference between the two B decays. Using 468 million $B\bar{B}$ pairs produced in $\Upsilon(4S)$ decays collected by the BABAR detector at SLAC, we measure T-violating parameters in the time evolution of neutral B mesons, yielding $\Delta S_T^+ = -1.37 \pm 0.14 (stat.) \pm 0.06 (syst.)$ and $\Delta S_T^- = 1.17 \pm 0.18 (stat.) \pm 0.11 (syst.)$. These nonzero results represent the first direct observation of T violation through the exchange of initial and final states in transitions that can only be connected by a T-symmetry transformation., Comment: 7 pages, 3 postscript figures, 1 table, appendix with 4 pages containing supplementary material. Accepted by Phys. Rev. Lett
Published: 2012
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41. Initial-State Radiation Measurement of the e+e- -> pi+pi-pi+pi- Cross Section

Author: Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Y\`, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We study the process e+e- -> pi+pi-pi+pi-gamma, with a photon emitted from the initial-state electron or positron, using 454.3 fb^-1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260,000 signal events. We use these data to extract the non-radiative sigma(e+e- ->pi+pi-pi+pi-) cross section in the energy range from 0.6 to 4.5 Gev. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data.
Published: 2012
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42. Infrastructure for Detector Research and Development towards the International Linear Collider

Author: Aguilar, J., Ambalathankandy, P., Fiutowski, T., Idzik, M., Kulis, Sz., Przyborowski, D., Swientek, K., Bamberger, A., Köhli, M., Lupberger, M., Renz, U., Schumacher, M., Zwerger, Andreas, Calderone, A., Cussans, D. G., Heath, H. F., Mandry, S., Page, R. F., Velthuis, J. J., Attié, D., Calvet, D., Colas, P., Coppolani, X., Degerli, Y., Delagnes, E., Gelin, M., Giomataris, I., Lutz, P., Orsini, F., Rialot, M., Senée, F., Wang, W., Alozy, J., Apostolakis, J., Aspell, P., Bergsma, F., Campbell, M., Formenti, F., Santos, H. Franca, Garcia, E. Garcia, de Gaspari, M., Giudice, P. -A., Grefe, Ch., Grichine, V., Hauschild, M., Ivantchenko, V., Kehrli, A., Kloukinas, K., Linssen, L., Cudie, X. Llopart, Marchioro, A., Musa, L., Ribon, A., Trampitsch, G., Uzhinskiy, V., Anduze, M., Beyer, E., Bonnemaison, A., Boudry, V., Brient, J. -C., Cauchois, A., Clerc, C., Cornat, R., Frotin, M., Gastaldi, F., Jauffret, C., Jeans, D., Karar, A., Mathieu, A., de Freitas, P. Mora, Musat, G., Rougé, A., Ruan, M., Vanel, J. -C., Videau, H., Besson, A., de Masi, G. Claus. R., Doziere, G., Dulinski, W., Goffe, M., Himmi, A., Hu-Guo, Ch., Morel, F., Valin, I., Winter, M., Bonis, J., Callier, S., Cornebise, P., Dulucq, F., Giannelli, M. Faucci, Fleury, J., Guilhem, G., Martin-Chassard, G., de la Taille, Ch., Pöschl, R., Raux, L., Seguin-Moreau, N., Wicek, F., Benyamna, M., Bonnard, J., Cârloganu, C., Fehr, F., Gay, P., Mannen, S., Royer, L., Charpy, A., Da Silva, W., David, J., Dhellot, M., Imbault, D., Ghislain, P., Kapusta, F., Pham, T. Hung, Savoy-Navarro, A., Sefri, R., Dzahini, D., Giraud, J., Grondin, D., Hostachy, J. -Y., Morin, L., Bassignana, D., Pellegrini, G., Lozano, M., Quirion, D., Fernandez, M., Jaramillo, R., Munoz, F. J., Vila, I., Dolezal, Z., Drasal, Z., Kodys, P., Kvasnicka, P., Aplin, S., Bachynska, O., Behnke, T., Behr, J., Dehmelt, K., Engels, J., Gadow, K., Gaede, F., Garutti, E., Göttlicher, P., Gregor, I. -M., Haas, T., Henschel, H., Koetz, U., Lange, W., Libov, V., Lohmann, W., Lutz, B., Mnich, J., Muhl, C., Ohlerich, M., Potylitsina-Kube, N., Prahl, V., Reinecke, M., Roloff, P., Rosemann, Ch., Rubinski, Igor, Schade, P., Schuwalov, S., Sefkow, F., Terwort, M., Volkenborn, R., Kalliopuska, J., Mehtaelae, P., Orava, R., van Remortel, N., Cvach, J., Janata, M., Kvasnicka, J., Marcisovsky, M., Polak, I., Sicho, P., Smolik, J., Vrba, V., Zalesak, J., Bergauer, T., Dragicevic, M., Friedl, M., Haensel, S., Irmler, C., Kiesenhofer, W., Krammer, M., Valentan, M., Piemontese, L., Cotta-Ramusino, A., Bulgheroni, A., Jastrzab, M., Caccia, M., Re, V., Ratti, L., Traversi, G., Dewulf, J. -P., Janssen, X., De Lentdecker, G., Yang, Y., Bryngemark, L., Christiansen, P., Gross, P., Jönsson, L., Ljunggren, M., Lundberg, B., Mjörnmark, U., Oskarsson, A., Richert, T., Stenlund, E., Österman, L., Rummel, S., Richter, R., Andricek, L., Ninkovich, J., Koffmane, Ch., Moser, H. -G., Boisvert, V., Green, B., Green, M. G., Misiejuk, A., Wu, T., Bilevych, Y., Carballo, V. M. Blanco, Chefdeville, M., de Nooij, L., Fransen, M., Hartjes, F., van der Graaf, H., Timmermans, J., Abramowicz, H., Ben-Hamu, Y., Jikhleb, I., Kananov, S., Levy, A., Levy, I., Sadeh, I., Schwartz, R., Stern, A., Goodrick, M. J., Hommels, L. B. A., Ward, R. Shaw. D. R., Daniluk, W., Kielar, E., Kotula, J., Moszczynski, A., Oliwa, K., Pawlik, B., Wierba, W., Zawiejski, L., Bailey, D. S., Kelly, M., Eigen, G., Brezina, Ch., Desch, K., Furletova, J., Kaminski, J., Killenberg, M., Köckner, F., Krautscheid, T., Krüger, H., Reuen, L., Wienemann, P., Zimmermann, R., Zimmermann, S., Bartsch, V., Postranecky, M., Warren, M., Wing, M., Corrin, E., Haas, D., Pohl, M., Diener, R., Fischer, P., Peric, I., Kaukher, A., Schäfer, O., Schröder, H., Wurth, R., and Zarnecki, A. F.
Subjects: Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract: The EUDET-project was launched to create an infrastructure for developing and testing new and advanced detector technologies to be used at a future linear collider. The aim was to make possible experimentation and analysis of data for institutes, which otherwise could not be realized due to lack of resources. The infrastructure comprised an analysis and software network, and instrumentation infrastructures for tracking detectors as well as for calorimetry., Comment: 54 pages, 48 pictures
Published: 2012

43. A Measurement of the Semileptonic Branching Fraction of the B_s Meson

Author: The BaBar Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, P. M., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Renga, F., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Y\`, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BaBar detector in the center-of-mass (CM) energy region above the Upsilon(4S) resonance. We use the inclusive yield of phi mesons and the phi yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B_s mesons relative to all B mesons as a function of CM energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be B(B_s to l nu X)=9.5 (+2.5/-2.0)(stat)(+1.1/-1.9)(syst)%, where l indicates the average of e and mu., Comment: 8 pages, 7 eps figures
Published: 2011
Full Text: View/download PDF

44. Search for hadronic decays of a light Higgs boson in the radiative decay Upsilon --> gamma A0

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Behn, E., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yeche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We search for hadronic decays of a light Higgs boson (A0) produced in radiative decays of an Upsilon(2S) or Upsilon(3S) meson, Upsilon --> gamma A0. The data have been recorded by the BABAR experiment at the Upsilon(3S) and Upsilon(2S) center of mass energies, and include (121.3 \pm 1.2) x 10^6 Upsilon(3S) and (98.3 \pm 0.9) x 10^6 Upsilon(2S) mesons. No significant signal is observed. We set 90% confidence level upper limits on the product branching fractions B(Upsilon(nS)-->gamma A0) x B(A0-->hadrons) (n=2 or 3) that range from 1 x 10^{-6} for an A0 mass of 0.3 GeV/c^2 to 8 x 10^{-5} at 7 GeV/c^2., Comment: 7 pages, 5 postscript figures, submitted to Physical Review Letters
Published: 2011
Full Text: View/download PDF

45. Observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K-

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Paramesvaran, S., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yèche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Santoro, V., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lindsay, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., Vuosalo, C. O., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We report the observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K- with a significance larger than 7 standard deviations based on 471x10^6$ BBbar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay B0bar --> Lambda_c^+ anti-Lambda K- to be (3.8 \pm 0.8_{stat} \pm 0.2_{sys} \pm 1.0_{Lambda_c^+})x10^{-5}. The uncertainties are statistical, systematic, and due to the uncertainty in the Lambda_c^+ branching fraction. We find that the Lambda_c^+ K^- invariant mass distribution shows an enhancement above 3.5 GeV/c^2., Comment: 7 pages, 7 figures, submitted to Phys. Rev. D (Rapid Communications)
Published: 2011
Full Text: View/download PDF

46. Study of radiative bottomonium transitions using converted photons

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Prencipe, E., Tisserand, V., GarraTico, J., Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Curry, S., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Meadows, B. T., Sokoloff, M. D., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Watson, J. E., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Baldini-Ferroli, R., Calcaterra, A., deSangro, R., Finocchiaro, G., Nicolaci, M., Pacetti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., LoVetere, M., Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Crawley, H. B., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., LeDiberder, F., Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., DiLodovico, F., Sacco, R., Sigamani, M., Cowan, G., Paramesvaran, S., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Salvati, E., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Neri, N., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., LopesPegna, D., Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., LiGioi, L., Mazzoni, M. A., Piredda, G., Bunger, C., Hartmann, T., Leddig, T., Schroder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yeche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Santoro, V., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Lanceri, L., Vitale, L., Lopez-March, N., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lindsay, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., Vuosalo, C. O., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: We use 111+/-1 million Upsilon(3S) and 89+/-1 million Upsilon(2S) events recorded by the BaBar detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e+e- pairs by the detector material. We observe Upsilon(3S) -> gamma chi_b0,2(1P) decay, make precise measurements of the branching fractions for chi_b1,2(1P,2P) -> gamma Upsilon(1S) and chi_b1,2(2P) -> gamma Upsilon(2S) decays, and search for radiative decay to the eta_b(1S) and eta_b(2S) states., Comment: 19 pages, 8 figures, published by Phys. Rev. D
Published: 2011
Full Text: View/download PDF

47. Evidence for the h_b(1P) meson in the decay Upsilon(3S) --> pi0 h_b(1P)

Author: The BABAR Collaboration, Lees, J. P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Osipenkov, I. L., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Curry, S., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Meadows, B. T., Sokoloff, M. D., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Jasper, H., Petzold, A., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Watson, J. E., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Piemontese, L., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., Pacetti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Vetere, M. Lo, Monge, M. R., Passaggio, S., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Crawley, H. B., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Derkach, D., da Costa, J. Firmino, Grosdidier, G., Diberder, F. Le, Lutz, A. M., Malaescu, B., Perez, A., Roudeau, P., Schune, M. H., Stocchi, A., Wang, L., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Paramesvaran, S., Wren, A. C., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Salvati, E., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., Taras, P., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Raven, G., Snoek, H. L., Jessop, C. P., Knoepfel, K. J., LoSecco, J. M., Wang, W. F., Corwin, L. A., Honscheid, K., Kass, R., Blount, N. L., Brau, J., Frey, R., Kolb, J. A., Rahmat, R., Sinev, N. B., Strom, D., Strube, J., Torrence, E., Castelli, G., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Neri, N., Paoloni, E., Rizzo, G., Walsh, J. J., Pegna, D. Lopes, Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Gioi, L. Li, Mazzoni, M. A., Piredda, G., Bünger, C., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., de Monchenault, G. Hamel, Vasseur, G., Yèche, Ch., Allen, M. T., Aston, D., Bard, D. J., Bartoldus, R., Benitez, J. F., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Field, R. C., Sevilla, M. Franco, Fulsom, B. G., Gabareen, A. M., Graham, M. T., Grenier, P., Hast, C., Innes, W. R., Kelsey, M. H., Kim, H., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., O'Grady, C. P., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Santoro, V., Schindler, R. H., Schwiening, J., Snyder, A., Su, D., Sullivan, M. K., Sun, S., Suzuki, K., Thompson, J. M., Va'vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Chen, X. R., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Guttman, N., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. M., Schilling, C. J., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., Gamba, D., Pelliccioni, M., Lanceri, L., Vitale, L., Lopez-March, N., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., Hamano, K., King, G. J., Kowalewski, R., Lewczuk, M. J., Lindsay, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., Vuosalo, C. O., and Wu, S. L.
Subjects: High Energy Physics - Experiment
Abstract: Using a sample of 122 million Upsilon(3S) events recorded with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we search for the $h_b(1P)$ spin-singlet partner of the P-wave chi_{bJ}(1P) states in the sequential decay Upsilon(3S) --> pi0 h_b(1P), h_b(1P) --> gamma eta_b(1S). We observe an excess of events above background in the distribution of the recoil mass against the pi0 at mass 9902 +/- 4(stat.) +/- 2(syst.) MeV/c^2. The width of the observed signal is consistent with experimental resolution, and its significance is 3.1sigma, including systematic uncertainties. We obtain the value (4.3 +/- 1.1(stat.) +/- 0.9(syst.)) x 10^{-4} for the product branching fraction BF(Upsilon(3S)-->pi0 h_b) x BF(h_b-->gamma eta_b)., Comment: 8 pages, 4 postscript figures, submitted to Phys. Rev. D (Rapid Communications)
Published: 2011
Full Text: View/download PDF

48. Search for a Dark Photon in e+e- Collisions at BaBar

Author: Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Stugu, B, Brown, DN, Feng, M, 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, and Lacker, HM
Subjects: (BaBar Collaboration), Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract: Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A^{'}), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e^{+}e^{-}→γA^{'}, A^{'}→e^{+}e^{-}, μ^{+}μ^{-} using 514 fb^{-1} of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10^{-4}-10^{-3} for dark photon masses in the range 0.02-10.2 GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon.
Published: 2014

49. Measurements of direct CP asymmetries in B →xsγ decays using sum of exclusive 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, Yushkov, AN, Kirkby, D, Lankford, AJ, Mandelkern, M, Dey, B, Gary, JW, Long, O, Campagnari, C, Franco Sevilla, M, Hong, TM, Kovalskyi, D, Richman, JD, West, CA, Eisner, AM, Lockman, WS, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Schwierz, R, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Guido, E, Lo Vetere, M, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, and Prasad, V
Subjects: Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract: We measure the direct CP violation asymmetry, ACP, in B→Xsγ and the isospin difference of the asymmetry, ΔACP, using 429fb-1 of data collected at(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings operating at the SLAC National Accelerator Laboratory. B mesons are reconstructed from ten charged B final states and six neutral B final states. We find ACP=+(1.7±1.9±1.0)%, which is in agreement with the Standard Model prediction and provides an improvement on the world average. Moreover, we report the first measurement of the difference between ACP for charged and neutral decay modes, ΔACP=+(5.0±3.9±1.5)%. Using the value of ΔACP, we also provide 68% and 90% confidence intervals on the imaginary part of the ratio of the Wilson coefficients corresponding to the chromomagnetic dipole and the electromagnetic dipole transitions.
Published: 2014

50. Measurements of direct CP asymmetries in B→Xsγ decays using sum of exclusive 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, Yushkov, AN, Kirkby, D, 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, Schumm, BA, Seiden, A, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Ongmongkolkul, P, Porter, FC, Andreassen, R, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, Bloom, PC, Ford, WT, Gaz, A, Nauenberg, U, Smith, JG, Wagner, SR, Ayad, R, Toki, WH, Spaan, B, Schwierz, R, Bernard, D, Verderi, M, Playfer, S, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Piemontese, L, Santoro, V, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rama, M, Zallo, A, Contri, R, Guido, E, Vetere, M Lo, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Bhuyan, B, and Prasad, V
Subjects: Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We measure the direct CP violation asymmetry, ACP, in B→Xsγ and the isospin difference of the asymmetry, ΔACP, using 429fb-1 of data collected at(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings operating at the SLAC National Accelerator Laboratory. B mesons are reconstructed from ten charged B final states and six neutral B final states. We find ACP=+(1.7±1.9±1.0)%, which is in agreement with the Standard Model prediction and provides an improvement on the world average. Moreover, we report the first measurement of the difference between ACP for charged and neutral decay modes, ΔACP=+(5.0±3.9±1.5)%. Using the value of ΔACP, we also provide 68% and 90% confidence intervals on the imaginary part of the ratio of the Wilson coefficients corresponding to the chromomagnetic dipole and the electromagnetic dipole transitions.
Published: 2014

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