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1. Light Dark Matter Constraints from SuperCDMS HVeV Detectors Operated Underground with an Anticoincidence Event Selection

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Alonso-González, D., Amaral, D. W. P., Anczarski, J., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Bathurst, C., Bhattacharyya, R., Biffl, A. J., Brink, P. L., Buchanan, M., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, J. -H., Chen, R., Chott, N., Cooley, J., Coombes, H., Cushman, P., Cyna, R., Das, S., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fouts, K., Fritts, M., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Harms, S. A. S., Harris, K., Hassan, N., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Keller, S. T. D., Kelsey, M. H., Kennard, K. T., Kubik, A., Kurinsky, N. A., Lee, M., Leyva, J., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mammo, J. S., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mirzakhani, M., Mohanty, B., Monteiro, D., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Pandey, L., Pandey, S., Partridge, R., Pedreros, D. S., Peng, W., Perna, L., Perry, W. L., Podviianiuk, R., Poudel, S. S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Rios, M., Roberts, A., Robinson, A. E., Ryan, J. L., Saab, T., Sadek, D., Sadoulet, B., Sahoo, S. P., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Simchony, A., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Tanner, E., Terry, G. D., Toback, D., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., Zuniga, A., and Zurowski, M. J.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

This article presents constraints on dark-matter-electron interactions obtained from the first underground data-taking campaign with multiple SuperCDMS HVeV detectors operated in the same housing. An exposure of 7.63 g-days is used to set upper limits on the dark-matter-electron scattering cross section for dark matter masses between 0.5 and 1000 MeV/$c^2$, as well as upper limits on dark photon kinetic mixing and axion-like particle axioelectric coupling for masses between 1.2 and 23.3 eV/$c^2$. Compared to an earlier HVeV search, sensitivity was improved as a result of an increased overburden of 225 meters of water equivalent, an anticoincidence event selection, and better pile-up rejection. In the case of dark-matter-electron scattering via a heavy mediator, an improvement by up to a factor of 25 in cross-section sensitivity was achieved., Comment: 7 pages + title and references, 4 figures, and 1 table

Published
2024

2. First measurement of the nuclear-recoil ionization yield in silicon at 100 eV

Author

Albakry, M. F., Alkhatib, I., Alonso, D., Amaral, D. W. P., An, P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Barbeau, P. S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hedges, S. C., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Li, L., Litke, M., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, ., Michielin, E., Mirabolfathi, N., Mohanty, B., Nebolsky, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Runge, J., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Speaks, Z., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zeolla, A., Zhang, E., Zheng, L., Zheng, Y., and Zuniga, A.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
Abstract

We measured the nuclear--recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a mono-energetic beam scatter off of the silicon nuclei at angles corresponding to energy depositions from 4\,keV down to 100\,eV, the lowest energy probed so far. The results show no sign of an ionization production threshold above 100\,eV. These results call for further investigation of the ionization yield theory and a comprehensive determination of the detector response function at energies below the keV scale.

Published
2023
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3. A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

Author

Albakry, M. F., Alkhatib, I., Alonso, D., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., Das, S., De Brienne, F., Rios, M., Dharani, S., di Vacri, M. L., Diamond, M. D., Elwan, M., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lee, M., Li, A., Litke, M., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Pandey, S., Partridge, R., Pedreros, D. S., Perna, L., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadek, D., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Sinervo, P., Street, J., Sun, H., Terry, G. D., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wu, C. -P., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuniga, A.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We present a new analysis of previously published of SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to $30~\textrm{MeV}/c^2$ at $5.0 \times 10^{-30}~\textrm{cm}^2$., Comment: Submitted to PRD

Published
2023
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4. Data Preservation in High Energy Physics

Author

Basaglia, T., Bellis, M., Blomer, J., Boyd, J., Bozzi, C., Britzger, D., Campana, S., Cartaro, C., Chen, G., Couturier, B., David, G., Diaconu, C., Dobrin, A., Duellmann, D., Ebert, M., Elmer, P., Fernandes, J., Fields, L., Fokianos, P., Ganis, G., Geiser, A., Gheata, M., Lopez, J. B. Gonzalez, Hara, T., Heinrich, L., Herner, K., Hildreth, M., Jayatilaka, B., Kado, M., Keeble, O., Kohls, A., Naim, K., Lange, C., Lassila-Perini, K., Levonian, S., Maggi, M., Marshall, Z., Vila, P. Mato, Mečionis, A., Morris, A., Piano, S., Potekhin, M., Schröder, M., Schwickerath, U., Sexton-Kennedy, E., Šimko, T., Smith, T., South, D., Verbytskyi, A., Vidal, M., Vivace, A., Wang, L., Watt, G., and Wenaus, T.

Subjects
High Energy Physics - Experiment
Abstract

Data preservation is a mandatory specification for any present and future experimental facility and it is a cost-effective way of doing fundamental research by exploiting unique data sets in the light of the continuously increasing theoretical understanding. This document summarizes the status of data preservation in high energy physics. The paradigms and the methodological advances are discussed from a perspective of more than ten years of experience with a structured effort at international level. The status and the scientific return related to the preservation of data accumulated at large collider experiments are presented, together with an account of ongoing efforts to ensure long-term analysis capabilities for ongoing and future experiments. Transverse projects aimed at generic solutions, most of which are specifically inspired by open science and FAIR principles, are presented as well. A prospective and an action plan are also indicated.

Published
2023
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5. Search for $B$ Mesogenesis at BABAR

Author

BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Lin, D. X., Middleton, S., Miyashita, T. S., Ongmongkolkul, P., Oyang, J., Porter, F. C., Röhrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bünger, C., Dittrich, S., Grünberg, O., Heß, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Tasneem, N., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Miller, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

A new mechanism has been proposed to simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the universe. This scenario predicts exotic $B$ meson decays into a baryon and a dark sector anti-baryon ($\psi_D$) with branching fractions accessible at $B$ factories. We present a search for $B \rightarrow \Lambda \psi_D$ decays using data collected by the $BABAR$ experiment at SLAC. This reaction is identified by fully reconstructing the accompanying $B$ meson and requiring the presence of a single $\Lambda$ baryon in the remaining particles. No significant signal is observed, and bounds on the $B \rightarrow \Lambda \psi_D$ branching fraction are derived in the range $0.13 - 5.2\times 10^{-5}$ for $1.0 < m_{\psi_D} < 4.2$ GeV/$c^{2}$. These results set strong constraints on the parameter space allowed by the theory.

Published
2023
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6. Effective Field Theory Analysis of CDMSlite Run 2 Data

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

CDMSlite Run 2 was a search for weakly interacting massive particles (WIMPs) with a cryogenic 600 g Ge detector operated in a high-voltage mode to optimize sensitivity to WIMPs of relatively low mass from 2 - 20 GeV/$c^2$. In this article, we present an effective field theory (EFT) analysis of the CDMSlite Run 2 data using an extended energy range and a comprehensive treatment of the expected background. A binned likelihood Bayesian analysis was performed on the recoil energy data, taking into account the parameters of the EFT interactions and optimizing the data selection with respect to the dominant background components. Energy regions within 5$\sigma$ of known activation peaks were removed from the analysis. The Bayesian evidences resulting from the different operator hypotheses show that the CDMSlite Run 2 data are consistent with the background-only models and do not allow for a signal interpretation assuming any additional EFT interaction. Consequently, upper limits on the WIMP mass and coupling-coefficient amplitudes and phases are presented for each EFT operator. These limits improve previous CDMSlite Run 2 bounds for WIMP masses above 5 GeV/$c^2$., Comment: 16 pages, 8 figures

Published
2022

7. Investigating the sources of low-energy events in a SuperCDMS-HVeV detector

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

Recent experiments searching for sub-GeV/$c^2$ dark matter have observed event excesses close to their respective energy thresholds. Although specific to the individual technologies, the measured excess event rates have been consistently reported at or below event energies of a few-hundred eV, or with charges of a few electron-hole pairs. In the present work, we operated a 1-gram silicon SuperCDMS-HVeV detector at three voltages across the crystal (0 V, 60 V and 100 V). The 0 V data show an excess of events in the tens of eV region. Despite this event excess, we demonstrate the ability to set a competitive exclusion limit on the spin-independent dark matter--nucleon elastic scattering cross section for dark matter masses of $\mathcal{O}(100)$ MeV/$c^2$, enabled by operation of the detector at 0 V potential and achievement of a very low $\mathcal{O}(10)$ eV threshold for nuclear recoils. Comparing the data acquired at 0 V, 60 V and 100 V potentials across the crystal, we investigated possible sources of the unexpected events observed at low energy. The data indicate that the dominant contribution to the excess is consistent with a hypothesized luminescence from the printed circuit boards used in the detector holder.

Published
2022
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8. A Strategy for Low-Mass Dark Matter Searches with Cryogenic Detectors in the SuperCDMS SNOLAB Facility

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bhattacharyya, R., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeno, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., Dharani, S., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hassan, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, E., Michielin, E., Mirabolfathi, N., Mohanty, B., Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Poudel, S. S., Sincavage, D. J., Stanford, C., Street, J., Sun, H., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wyko, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The SuperCDMS Collaboration is currently building SuperCDMS SNOLAB, a dark matter search focused on nucleon-coupled dark matter in the 1-5 GeV/c$^2$ mass range. Looking to the future, the Collaboration has developed a set of experience-based upgrade scenarios, as well as novel directions, to extend the search for dark matter using the SuperCDMS technology in the SNOLAB facility. The experienced-based scenarios are forecasted to probe many square decades of unexplored dark matter parameter space below 5 GeV/c$^2$, covering over 6 decades in mass: 1-100 eV/c$^2$ for dark photons and axion-like particles, 1-100 MeV/c$^2$ for dark-photon-coupled light dark matter, and 0.05-5 GeV/c$^2$ for nucleon-coupled dark matter. They will reach the neutrino fog in the 0.5-5 GeV/c$^2$ mass range and test a variety of benchmark models and sharp targets. The novel directions involve greater departures from current SuperCDMS technology but promise even greater reach in the long run, and their development must begin now for them to be available in a timely fashion. The experienced-based upgrade scenarios rely mainly on dramatic improvements in detector performance based on demonstrated scaling laws and reasonable extrapolations of current performance. Importantly, these improvements in detector performance obviate significant reductions in background levels beyond current expectations for the SuperCDMS SNOLAB experiment. Given that the dominant limiting backgrounds for SuperCDMS SNOLAB are cosmogenically created radioisotopes in the detectors, likely amenable only to isotopic purification and an underground detector life-cycle from before crystal growth to detector testing, the potential cost and time savings are enormous and the necessary improvements much easier to prototype., Comment: contribution to Snowmass 2021; v2 updated (assorted corrections and improvements to forecasts) October 2022; v3 updated (corrected SuperCDMS SNOLAB sensitivity curves in upgrade forecast plots in body of text) April 2023

Published
2022

9. Ionization yield measurement in a germanium CDMSlite detector using photo-neutron sources

Author

SuperCDMS Collaboration, Albakry, M. F., Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Hall, J., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Lee, M., Li, A., Liu, J., Liu, Y., Loer, B., Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Osborne, M. D., Oser, S. M., Page, W. A., Partridge, R., Pedreros, D. S., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Saikia, I., Sander, J., Sattari, A., Scarff, A., Schmidt, B., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Street, J., Thasrawala, F. K., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wen, O., Williams, Z., Wilson, M. J., Winchell, J., Wykoff, K., Yellin, S., Young, B. A., Yu, T. C., Zatschler, B., Zatschler, S., Zaytsev, A., Zhang, E., Zheng, L., and Zuber, S.

Subjects
Physics - Instrumentation and Detectors
Abstract

Two photo-neutron sources, $^{88}$Y$^{9}$Be and $^{124}$Sb$^{9}$Be, have been used to investigate the ionization yield of nuclear recoils in the CDMSlite germanium detectors by the SuperCDMS collaboration. This work evaluates the yield for nuclear recoil energies between 1 keV and 7 keV at a temperature of $\sim$ 50 mK. We use a Geant4 simulation to model the neutron spectrum assuming a charge yield model that is a generalization of the standard Lindhard model and consists of two energy dependent parameters. We perform a likelihood analysis using the simulated neutron spectrum, modeled background, and experimental data to obtain the best fit values of the yield model. The ionization yield between recoil energies of 1 keV and 7 keV is shown to be significantly lower than predicted by the standard Lindhard model for germanium. There is a general lack of agreement among different experiments using a variety of techniques studying the low-energy range of the nuclear recoil yield, which is most critical for interpretation of direct dark matter searches. This suggests complexity in the physical process that many direct detection experiments use to model their primary signal detection mechanism and highlights the need for further studies to clarify underlying systematic effects that have not been well understood up to this point.

Published
2022
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10. Constraints on Lightly Ionizing Particles from CDMSlite

Author

SuperCDMS Collaboration, Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pradeep, A., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Sander, J., Sattari, A., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Street, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhang, H. G., Zhao, X., and Zheng, L.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to Lightly Ionizing Particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. We report first direct-detection limits calculated using the optimum interval method on the vertical intensity of cosmogenically-produced LIPs with an electric charge smaller than $e/(3\times10^5$), as well as the strongest limits for charge $\leq e/160$, with a minimum vertical intensity of $1.36\times10^{-7}$\,cm$^{-2}$s$^{-1}$sr$^{-1}$ at charge $e/160$. These results apply over a wide range of LIP masses (5\,MeV/$c^2$ to 100\,TeV/$c^2$) and cover a wide range of $\beta\gamma$ values (0.1 -- $10^6$), thus excluding non-relativistic LIPs with $\beta\gamma$ as small as 0.1 for the first time.

Published
2020
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11. Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated Above Ground

Author

Alkhatib, I., Amaral, D. W. P., Aralis, T., Aramaki, T., Arnquist, I. J., Langroudy, I. Ataee, Azadbakht, E., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chaudhuri, M., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kashyap, V. K. S., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Theenhausen, H. Meyer zu, Michaud, É. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Oser, S. M., Page, W. A., Pakarha, P., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Saab, T., Sadoulet, B., Sander, J., Sattari, A., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Street, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wills, L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhang, H. G., Zhao, X., Zheng, L., Camilleri, J., Kolomensky, Yu. G., and Zuber, S.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

We present limits on spin-independent dark matter-nucleon interactions using a $10.6$ $\mathrm{g}$ Si athermal phonon detector with a baseline energy resolution of $\sigma_E=3.86 \pm 0.04$ $(\mathrm{stat.})^{+0.19}_{-0.00}$ $(\mathrm{syst.})$ $\mathrm{eV}$. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector for dark matter particle masses from $93$ to $140$ $\mathrm{MeV}/c^2$, with a raw exposure of $9.9$ $\mathrm{g}\cdot\mathrm{d}$ acquired at an above-ground facility. This work illustrates the scientific potential of detectors with athermal phonon sensors with eV-scale energy resolution for future dark matter searches., Comment: 7 pages, 4 figures, this version includes ancillary files from official data release

Published
2020
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12. Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector

Author

SuperCDMS Collaboration, Amaral, D. W., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S., Bhattacharyya, R., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Chen, R., Chott, N., Cooley, J., Coombes, H., Corbett, J., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kelsey, M. H., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Mayer, A. J., Michaud, É. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Novati, V., Orrell, J. L., Oser, S. M., Page, W. A., Pakarha, P., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pyle, M., Rau, W., Reid, E., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Sattari, A., Schnee, R. W., Scorza, S., Serfass, B., Sincavage, D. J., Stanford, C., Stein, M., Street, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wills, L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhang, H. G., Zhao, X., and Zheng, L.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axion-like particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 gram Si detector achieved a 3 eV phonon energy resolution; for a detector bias of 100 V, this corresponds to a charge resolution of 3% of a single electron-hole pair. The energy spectrum is reported from a blind analysis with 1.2 gram-days of exposure acquired in an above-ground laboratory. With charge carrier trapping and impact ionization effects incorporated into the dark matter signal models, the dark matter-electron cross section $\bar{\sigma}_{e}$ is constrained for dark matter masses from 0.5--$10^{4} $MeV$/c^{2}$; in the mass range from 1.2--50 eV$/c^{2}$ the dark photon kinetic mixing parameter $\varepsilon$ and the axioelectric coupling constant $g_{ae}$ are constrained. The minimum 90% confidence-level upper limits within the above mentioned mass ranges are $\bar{\sigma}_{e}\,=\,8.7\times10^{-34}$ cm$^{2}$, $\varepsilon\,=\,3.3\times10^{-14}$, and $g_{ae}\,=\,1.0\times10^{-9}$., Comment: 5 pages + title and references, 3 figures and 1 table

Published
2020
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13. Precision measurement of the ${\cal B}(\Upsilon(3S)\to\tau^+\tau^-)/{\cal B}(\Upsilon(3S)\to\mu^+\mu^-)$ ratio

Author

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Lin, D. X., Miyashita, T. S., Ongmongkolkul, P., Oyang, J., Porter, F. C., Röhrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bünger, C., Dittrich, S., Grünberg, O., Heß, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sibidanov, A., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

We report on a precision measurement of the ratio ${\cal R}_{\tau\mu}^{\Upsilon(3S)} = {\cal B}(\Upsilon(3S)\to\tau^+\tau^-)/{\cal B}(\Upsilon(3S)\to\mu^+\mu^-)$ using data collected with the BaBar detector at the SLAC PEP-II $e^+e^-$ collider. The measurement is based on a 28 fb$^{-1}$ data sample collected at a center-of-mass energy of 10.355 GeV corresponding to a sample of 122 million $\Upsilon(3S)$ mesons. The ratio is measured to be ${\cal R}_{\tau\mu}^{\Upsilon(3S)} = 0.966 \pm 0.008_\mathrm{stat} \pm 0.014_\mathrm{syst}$ and is in agreement with the Standard Model prediction of 0.9948 within 2 standard deviations. The uncertainty in ${\cal R}_{\tau\mu}^{\Upsilon(3S)}$ is almost an order of magnitude smaller than the only previous measurement., Comment: 8 pages, 4 figures, 3 tables

Published
2020
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14. Search for lepton-flavor violating decays $D^{0}\rightarrow X^{0}e^{\pm}\mu^{\mp}$

Author

BaBar Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Lin, D. X., Miyashita, T. S., Ongmongkolkul, P., Oyang, J., Porter, F. C., R, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., B, C., Dittrich, S., Gr, O., He, M., Leddig, T., Vo, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle, A., Sekula, S. J., Ahmed, H., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

We present a search for seven lepton-flavor-violating neutral charm decays of the type $D^{0}\rightarrow X^{0} e^{\pm} \mu^{\mp}$, where $X^{0}$ represents a $\pi^{0}$, $K^{0}_{\rm S}$, $\bar{K^{*0}}$, $\rho^{0}$, $\phi$, $\omega$, or $\eta$ meson. The analysis is based on $468$ fb$^{-1}$ of $e^+e^-$ annihilation data collected at or close to the $\Upsilon(4S)$ resonance with the BaBar detector at the SLAC National Accelerator Laboratory. No significant signals are observed, and we establish 90\% confidence level upper limits on the branching fractions in the range $(5.0 - 22.5)\times 10^{-7}$. The limits are between one and two orders of magnitude more stringent than previous measurements., Comment: 12 pages, 2 figures, to be submitted to Physical Review D. arXiv admin note: text overlap with arXiv:1905.00608

Published
2020
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15. Constraints on Lightly Ionizing Particles from CDMSlite

Author

Alkhatib, I, Amaral, DWP, Aralis, T, Aramaki, T, Arnquist, IJ, Langroudy, I Ataee, Azadbakht, E, Banik, S, Barker, D, Bathurst, C, Bauer, DA, Bezerra, LVS, Bhattacharyya, R, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Chaudhuri, M, Chen, R, Chott, N, Cooley, J, Coombes, H, Corbett, J, Cushman, P, De Brienne, F, di Vacri, ML, Diamond, MD, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fouts, K, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Hines, BA, Hollister, MI, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kashyap, VKS, Kelsey, MH, Kubik, A, Kurinsky, NA, Lawrence, RE, Li, A, Loer, B, Asamar, E Lopez, Lukens, P, MacFarlane, DB, Mahapatra, R, Mandic, V, Mast, N, Mayer, AJ, Theenhausen, H Meyer zu, Michaud, ÉM, Michielin, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nagorny, S, Nelson, J, Neog, H, Novati, V, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Podviianiuk, R, Ponce, F, Poudel, S, Pradeep, A, Pyle, M, Rau, W, Reid, E, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Saab, T, Sadoulet, B, Sander, J, Sattari, A, Schnee, RW, Scorza, S, Serfass, B, Sincavage, DJ, Stanford, C, and Street, J

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

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) achieved efficient detection of very small recoil energies in its germanium target, resulting in sensitivity to lightly ionizing particles (LIPs) in a previously unexplored region of charge, mass, and velocity parameter space. We report first direct-detection limits calculated using the optimum interval method on the vertical intensity of cosmogenically produced LIPs with an electric charge smaller than e/(3×10^{5}), as well as the strongest limits for charge ≤e/160, with a minimum vertical intensity of 1.36×10^{-7}  cm^{-2} s^{-1} sr^{-1} at charge e/160. These results apply over a wide range of LIP masses (5  MeV/c^{2} to 100  TeV/c^{2}) and cover a wide range of βγ values (0.1-10^{6}), thus excluding nonrelativistic LIPs with βγ as small as 0.1 for the first time.

Published
2021

16. Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated above Ground

Author

Alkhatib, I, Amaral, DWP, Aralis, T, Aramaki, T, Arnquist, IJ, Langroudy, I Ataee, Azadbakht, E, Banik, S, Barker, D, Bathurst, C, Bauer, DA, Bezerra, LVS, Bhattacharyya, R, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Chaudhuri, M, Chen, R, Chott, N, Cooley, J, Coombes, H, Corbett, J, Cushman, P, De Brienne, F, di Vacri, ML, Diamond, MD, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fouts, K, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hines, BA, Hollister, MI, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kashyap, VKS, Kelsey, MH, Kubik, A, Kurinsky, NA, Lawrence, RE, Li, A, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, MacFarlane, DB, Mahapatra, R, Mandic, V, Mast, N, Mayer, AJ, Theenhausen, H Meyer zu, Michaud, ÉM, Michielin, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nagorny, S, Nelson, J, Neog, H, Novati, V, Orrell, JL, Oser, SM, Page, WA, Pakarha, P, Partridge, R, Podviianiuk, R, Ponce, F, Poudel, S, Pyle, M, Rau, W, Reid, E, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Saab, T, Sadoulet, B, Sander, J, Sattari, A, Schnee, RW, Scorza, S, and Serfass, B

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, SuperCDMS Collaboration, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present limits on spin-independent dark matter-nucleon interactions using a 10.6 g Si athermal phonon detector with a baseline energy resolution of σ_{E}=3.86±0.04(stat)_{-0.00}^{+0.19}(syst)  eV. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector for dark matter particle masses from 93 to 140  MeV/c^{2}, with a raw exposure of 9.9 g d acquired at an above-ground facility. This work illustrates the scientific potential of detectors with athermal phonon sensors with eV-scale energy resolution for future dark matter searches.

Published
2021

17. Constraints on dark photons and axion-like particles from SuperCDMS Soudan

Author

SuperCDMS Collaboration, Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bathurst, C., Bauer, D. A., Bezerra, L. V. S, Bhattacharyya, R., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Cooley, J., Coombes, H., Corbett, J., Cornell, B., Cushman, P., De Brienne, F., di Vacri, M. L., Diamond, M. D., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fouts, K., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hines, B. A., Hollister, M. I., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Li, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., MacFarlane, D. B., Mahapatra, R., Mandic, V., Mast, N., Michaud, É. M., Michielin, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nagorny, S., Nelson, J., Neog, H., Orrell, J. L., Oser, S. M., Page, W. A., Pakarha, P., Partridge, R., Podviianiuk, R., Ponce, F., Poudel, S., Pyle, M., Rau, W., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Toback, D., Underwood, R., Verma, S., Villano, A. N., von Krosigk, B., Watkins, S. L., Wills, L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Yu, T. C., Zhang, E., Zhao, X., and Zheng, L.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axion-like particles and the kinetic mixing parameter of dark photons, assuming the respective species constitutes all of the galactic dark matter. This study covers the mass range from 40 eV/$c^2$ to 500 eV/$c^2$ for both candidates, excluding previously untested parameter space for masses below ~1 keV/$c^2$. For the kinetic mixing of dark photons, values below $10^{-15}$ are reached for particle masses around 100 eV/$c^2$; for the axioelectric coupling of axion-like particles, values below $10^{-12}$ are reached for particles with masses in the range of a few-hundred eV/$c^2$., Comment: 14 pages, 10 figures, 1 page correction included with 3 figures

Published
2019
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18. Measurements of the Absolute Branching Fractions of $B^\pm \to K^\pm X_{c\bar c}$

Author

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankfordm, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

A study of the two body decays $B^\pm\rightarrow X_{c\bar c}K^\pm$, where X$_{c\bar c}$ refers to one charmonium state, is reported by BaBar collaboration using a data sample of 424 fb$^{-1}$. The absolute determination of branching fractions for these decays are significantly improved compared to previous BaBaR measurements. Evidence is found for the decay $B^+\rightarrow X(3872)K^+$ at the $3\sigma$ level. The absolute branching fraction ${\cal B}(B^+\rightarrow X(3872)K^+) = (2.1\pm0.6({\rm stat})\pm0.3({\rm syst}))\times 10^{-4}$ is measured for the first time. It follows that ${\cal B}(X(3872)\rightarrow J/\psi\pi^+\pi^-)=(4.1\pm1.3)\%$, supporting the hypothesis of a molecular component for this resonance., Comment: 8 pages 6 figures

Published
2019
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19. Search for $B^- \to \Lambda \bar p \nu \bar\nu$ with the BABAR experiment

Author

The BABAR Collaboration, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Röhrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bünger, C., Dittrich, S., Grünberg, O., Heß, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

We search for the rare flavor-changing neutral current process $B^- \to \Lambda {\overline p} \nu{\overline{\nu}}$ using data from the BABAR experiment. A total of 424 fb$^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy of the $\Upsilon$(4S) resonance is used in this study, corresponding to a sample of ${(471 \pm 3) \times 10^{6}}$ $B\overline{B}$ pairs. Signal $B^- \to \Lambda {\overline p} \nu{\overline{\nu}}$ candidates are identified by first fully reconstructing a $B^+$ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with this reconstructed $B^+$ decay for evidence of a signal $B^- \to \Lambda {\overline p} \nu{\overline{\nu}}$ decay. The data yield is found to be consistent with the expected background contribution under a null signal hypothesis, resulting in an upper limit of ${{\cal B} (B^- \to \Lambda {\overline p} \nu{\overline{\nu}}) < 3.0\times 10^{-5}}$ at the $90\%$ confidence level., Comment: 10 pages, 7 figures

Published
2019
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20. Search for rare or forbidden decays of the $D^{0}$ meson

Author

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Vazquez, W. Panduro, Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Röhrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Diberder, F. Le, Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bünger, C., Dittrich, S., Grünberg, O., Heß, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., MacFarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., 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., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.

Subjects
High Energy Physics - Experiment
Abstract

We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type $D^0\rightarrow h^{\prime -} h^{-}\ell^{\prime +} \ell^{+}$ and $D^0\rightarrow h^{\prime -} h^{+}\ell^{\prime\pm} \ell^{\mp}$, where $h$ and $h^{\prime}$ represent a $K$ or $\pi$ meson and $\ell$ and $\ell^{\prime}$ an electron or muon. The analysis is based on $468$ fb$^{-1}$ of $e^+e^-$ annihilation data collected at or close to the $Y(4S)$ resonance with the BaBar detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes and we establish 90% confidence level upper limits on the branching fractions in the range $(1.0 - 30.6)\times 10^{-7}$. The limits are between one and three orders of magnitude times more stringent than previous measurements., Comment: 8 pages, 2 figures

Published
2019
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21. Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment

Author

Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bathurst, C, Bauer, DA, Bezerra, LVS, Bhattacharyya, R, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Coombes, H, Corbett, J, Cornell, B, Cushman, P, De Brienne, F, di Vacri, ML, Diamond, MD, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fouts, K, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hines, BA, Hollister, MI, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Li, A, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, MacFarlane, DB, Mahapatra, R, Mandic, V, Mast, N, Michaud, ÉM, Michielin, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nagorny, S, Nelson, J, Neog, H, Orrell, JL, Oser, SM, Page, WA, Pakarha, P, Partridge, R, Podviianiuk, R, Ponce, F, Poudel, S, Pyle, M, Rau, W, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Sincavage, DJ, Stanford, C, Stein, M, Street, J, Toback, D, Underwood, R, and Verma, S

Subjects
hep-ex, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We present an analysis of electron recoils in cryogenic germanium detectors operated during the SuperCDMS Soudan experiment. The data are used to set new constraints on the axioelectric coupling of axionlike particles and the kinetic mixing parameter of dark photons, assuming the respective species constitutes all of the galactic dark matter. This study covers the mass range from 40 eV/c2 to 500 keV/c2 for both candidates, excluding previously untested parameter space for masses below ∼1 keV/c2. For the kinetic mixing of dark photons, values below 10-15 are reached for particle masses around 100 eV/c2; for the axioelectric coupling of axionlike particles, values below 10-12 are reached for particles with masses in the range of a few-hundred eV/c2.

Published
2020

22. Search for Low-Mass Dark Matter with CDMSlite Using a Profile Likelihood Fit

Author

SuperCDMS Collaboration, Agnese, R., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cameron, R. A., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Cooley, J., Cornell, B., Cushman, P., De Brienne, F., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Herbert, N., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Neog, H., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Pepin, M., Ponce, F., Poudel, S., Pyle, M., Qiu, H., Rau, W., Reisetter, A., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Scarff, A., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stanford, C., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (<10 GeV/c$^2$) dark matter particles. We present an analysis of the final CDMSlite data set, taken with a different detector than was used for the two previous CDMSlite data sets. This analysis includes a data "salting" method to protect against bias, improved noise discrimination, background modeling, and the use of profile likelihood methods to search for a dark matter signal in the presence of backgrounds. We achieve an energy threshold of 70 eV and significantly improve the sensitivity for dark matter particles with masses between 2.5 and 10 GeV/c$^2$ compared to previous analyses. We set an upper limit on the dark matter-nucleon scattering cross section in germanium of 5.4$\times$10$^{-42}$ cm$^2$ at 5 GeV/c$^2$, a factor of $\sim$2.5 improvement over the previous CDMSlite result.

Published
2018
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23. Production Rate Measurement of Tritium and Other Cosmogenic Isotopes in Germanium with CDMSlite

Author

SuperCDMS Collaboration, Agnese, R., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Barker, D., Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cartaro, C., Cerdeño, D. G., Chang, Y. -Y., Cooley, J., Cornell, B., Cushman, P., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fink, C. W., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwal, S. R., Harris, H. R., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Pepin, M., Ponce, F., Poudel, S., Pyle, M., Qiu, H., Rau, W., Reisetter, A., Ren, R., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Banik, S., Sander, J., Scarff, A., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
Abstract

Future direct searches for low-mass dark matter particles with germanium detectors, such as SuperCDMS SNOLAB, are expected to be limited by backgrounds from radioactive isotopes activated by cosmogenic radiation inside the germanium. There are limited experimental data available to constrain production rates and a large spread of theoretical predictions. We examine the calculation of expected production rates, and analyze data from the second run of the CDMS low ionization threshold experiment (CDMSlite) to estimate the rates for several isotopes. We model the measured CDMSlite spectrum and fit for contributions from tritium and other isotopes. Using the knowledge of the detector history, these results are converted to cosmogenic production rates at sea level. The production rates in atoms/(kg$\cdot$day) are 74$\pm$9 for $^3$H, 1.5$\pm$0.7 for $^{55}$Fe, 17$\pm$5 for $^{65}$Zn, and 30$\pm$18 for $^{68}$Ge., Comment: 14 pages, 10 figures, 5 tables. v5 contains the extended data release (and documentation) of the CDMSlite Run 2 data as ancillary files

Published
2018
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24. First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Author

SuperCDMS Collaboration, Agnese, R., Aralis, T., Aramaki, T., Arnquist, I. J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Calkins, R., Cartaro, C., Cerdeno, D. G., Chang, Y. -Y., Cooley, J., Cornell, B., Cushman, P., Di Stefano, P. C. F., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fink, C., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S. R., Harris, H. R., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Lawrence, R. E., Leyva, J. V., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E. H., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Orrell, J. L., Oser, S. M., Page, W. A., Partridge, R., Pepin, M., Phipps, A., Ponce, F., Poudel, S., Pyle, M., Qiu, H., Rau, W., Reisetter, A., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Romani, R. K., Saab, T., Sadoulet, B., Sander, J., Scarff, A., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., So, J., Speller, D., Stanford, C., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Watkins, S. L., Wilson, J. S., Wilson, M. J., Winchell, J., Wright, D. H., Yellin, S., Young, B. A., Zhang, X., and Zhao, X.

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 gram CDMS HV device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1 MeV/$\mathrm{c^2}$. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 gram days). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations., Comment: 6 pages + title and references, 6 figures, includes erratum submitted to PRL and data release

Published
2018
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25. Measurement of $\cos{2\beta}$ in $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author

BaBar, The, Collaborations, Belle, Adachi, I., Adye, T., Ahmed, H., Ahn, J. K., Aihara, H., Akar, S., Alam, M. S., Albert, J., Anulli, F., Arnaud, N., Asner, D. M., Aston, D., Atmacan, H., Aushev, T., Ayad, R., Badhrees, I., Bakich, A. M., Banerjee, Sw., Bansal, V., Barlow, R. J., Batignani, G., Beaulieu, A., Behera, P., 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., Bomben, M., Bondar, A., Bonneaud, G. R., Bozek, A., Bozzi, C., Bračko, M., Browder, T. E., Brown, D. N., Bünger, C., Burchat, P. R., Buzykaev, A. R., Calabrese, R., Calcaterra, A., Calderini, G., Di Carlo, S., Carpinelli, M., Cartaro, C., Casarosa, G., Cenci, R., Chao, D. S., Chauveau, J., Cheaib, R., Chen, A., Chen, C., Cheng, C. H., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Chrzaszcz, M., Cibinetto, G., Cinabro, D., Cochran, J., Coleman, J. P., Convery, M. R., Cowan, G., Cowan, R., Cremaldi, L., Cunliffe, S., Dash, N., Davier, M., Davis, C. L., De Mori, F., De Nardo, G., Denig, A. G., de Sangro, R., Dey, B., Di Lodovico, F., Dittrich, S., Doležal, Z., Dorfan, J., Drásal, Z., Druzhinin, V. P., Dunwoodie, W., Ebert, M., Echenard, B., Eidelman, S., Eigen, G., Eisner, A. M., Emery, S., Epifanov, D., Ernst, J. A., Faccini, R., Fast, J. E., Feindt, M., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., Flood, K. T., Forti, F., Fritsch, M., Fulsom, B. G., Gabathuler, E., Gamba, D., Garg, R., Garmash, A., Gary, J. W., Garzia, I., Gaur, V., Gaz, A., Gelb, M., Gershon, T. J., Gioi, L. Li, Giorgi, M. A., Giri, A., Godang, R., Goldenzweig, P., Golob, B., Golubev, V. B., Gorodeisky, R., Gradl, W., Graham, M. T., Grauges, E., Griessinger, K., Gritsan, A. V., Grünberg, O., Guido, E., Guttman, N., Hafner, A., Hara, T., Harrison, P. F., Hast, C., Hayasaka, K., Hearty, C., Heck, M., Hedges, M. T., Heß, M., Hirose, S., Hitlin, D. G., Honscheid, K., Hou, W. -S., Huard, Z., Van Hulse, C., Hutchcroft, D. E., Inami, K., Inguglia, G., Innes, W. R., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Izen, J. M., Jacobs, W. W., Jawahery, A., Jessop, C. P., Jia, S., Jin, Y., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kass, R., Kichimi, H., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, J., Kim, P., King, G. J., Kinoshita, K., Koch, H., Kodyš, P., Kolomensky, Yu. G., Korpar, S., Kotchetkov, D., Kowalewski, R., Kravchenko, E. A., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lacker, H. M., Lafferty, G. D., Lanceri, L., Lange, J. S., Lange, D. J., Lankford, A. J., Latham, T. E., Leddig, T., Diberder, F. Le, Lee, I. S., Lee, S. C., Lees, J. P., Leith, D. W. G. S., Li, L. K., Li, Y. B., Li, Y., Libby, J., Liventsev, D., Lockman, W. S., Long, O., LoSecco, J. M., Lou, X. C., Lubej, M., Lueck, T., Luitz, S., Luo, T., Luppi, E., Lusiani, A., Lutz, A. M., MacFarlane, D. B., MacNaughton, J., Mallik, U., Manoni, E., Marchiori, G., Margoni, M., Martellotti, S., Martinez-Vidal, F., Masuda, M., Matsuda, T., Mattison, T. S., Matvienko, D., McKenna, J. A., Meadows, B. T., Merola, M., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Muller, D. R., Müller, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Neal, H., Neri, N., Nisar, N. K., Nishida, S., Nugent, I. M., Oberhof, B., Ocariz, J., Ogawa, S., Ongmongkolkul, P., Ono, H., Onuchin, A. P., Oyanguren, A., Pakhlov, P., Pakhlova, G., Pal, B., Palano, A., Palombo, F., Vazquez, W. Panduro, Paoloni, E., Pardi, S., Park, H., Passaggio, S., Patrignani, C., Patteri, P., Paul, S., Pavelkin, I., Payne, D. J., Pedlar, T. K., Peimer, D. R., Peruzzi, I. M., Piccolo, M., Piilonen, L. E., Pilloni, A., Piredda, G., Poireau, V., Porter, F. C., Posocco, M., Prell, S., Prepost, R., Puccio, E. M. T., Purohit, M. V., Pushpawela, B. G., Rama, M., Randle-Conde, A., Ratcliff, B. N., Raven, G., Resmi, P. K., Ritchie, J. L., Ritter, M., Rizzo, G., Roberts, D. A., Robertson, S. H., Röhrken, M., Roney, J. M., Roodman, A., Rossi, A., Rotondo, M., Rozanska, M., Russo, G., Sacco, R., Said, S. Al, Sakai, Y., Sandilya, S., Santelj, L., Santoro, V., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schroeder, T., Schubert, K. R., Schwanda, C., Schwartz, A. J., Schwitters, R. F., Sciacca, C., Seddon, R. M., Seino, Y., Sekula, S. J., Senyo, K., Seon, O., Serednyakov, S. I., Sevior, M. E., Shebalin, V., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Simi, G., Simon, F., Simonetto, F., Skovpen, Yu. I., Smith, J. G., Smith, A. J. S., So, R. Y., Sobie, R. J., Soffer, A., Sokoloff, M. D., Solodov, E. P., Solovieva, E., Spanier, S. M., Starič, M., Stroili, R., Sullivan, M. K., Sumisawa, K., Sumiyoshi, T., Summers, D. J., Sun, L., Takizawa, M., Tamponi, U., Tanida, K., Taras, P., Tasneem, N., Tenchini, F., Tisserand, V., Todyshevx, K. Yu., Touramanis, C., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Varner, G., Vasseur, G., Va'vra, J., Červenkov, D., Verderi, M., Vitale, L., Vorobyev, V., Voß, C., Wagner, S. R., Waheed, E., Waldi, R., Walsh, J. J., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wilson, F. F., Wilson, J. R., Wisniewski, W. J., Won, E., Wormser, G., Wright, D. M., Wu, S. L., Yuan, C. Z., Yusa, Y., Zakharov, S., Zallo, A., Zani, L., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.

Subjects
High Energy Physics - Experiment
Abstract

We report measurements of $\sin{2\beta}$ and $\cos{2\beta}$ from a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays, where the light unflavored and neutral hadron $h^{0}$ is a $\pi^{0}$, $\eta$, or $\omega$ meson. The analysis is performed with a combination of the final data sets of the \babar\ and Belle experiments containing $471 \times 10^{6}$ and $772 \times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon\left(4S\right)$ resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure $\sin{2\beta} = 0.80 \pm 0.14 \,(\rm{stat.}) \pm 0.06 \,(\rm{syst.}) \pm 0.03 \,(\rm{model})$ and $\cos{2\beta} = 0.91 \pm 0.22 \,(\rm{stat.}) \pm 0.09 \,(\rm{syst.}) \pm 0.07 \,(\rm{model})$. The result for the direct measurement of the angle is $\beta = \left( 22.5 \pm 4.4 \,(\rm{stat.}) \pm 1.2 \,(\rm{syst.}) \pm 0.6 \,(\rm{model}) \right)^{\circ}$. The last quoted uncertainties are due to the composition of the $D^{0} \to K_{S}^{0} \pi^{+} \pi^{-}$ decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics $e^{+}e^{-} \to c\bar{c}$ data sample as part of this analysis. We find the first evidence for $\cos2\beta>0$ at the level of $3.7$ standard deviations. The measurement excludes the trigonometric multifold solution $\pi/2 - \beta = (68.1 \pm 0.7)^{\circ}$ at the level of $7.3$ standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of $\beta = 0^{\circ}$ is ruled out at the level of $5.1$ standard deviations, and thus CP violation is observed in $B^{0} \to D^{(*)} h^{0}$ decays., Comment: To be submitted to Physical Review D

Published
2018
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26. First evidence for $\cos 2\beta>0$ and resolution of the CKM Unitarity Triangle ambiguity by a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays

Author

BaBar, The, Collaborations, Belle, Adachi, I., Adye, T., Ahmed, H., Ahn, J. K., Aihara, H., Akar, S., Alam, M. S., Albert, J., Anulli, F., Arnaud, N., Asner, D. M., Aston, D., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Banerjee, Sw., Bansal, V., Barlow, R. J., Batignani, G., Beaulieu, A., Behera, P., 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., Bomben, M., Bondar, A., Bonneaud, G. R., Bozek, A., Bozzi, C., Bračko, M., Browder, T. E., Brown, D. N., Bünger, C., Burchat, P. R., Buzykaev, A. R., Calabrese, R., Calcaterra, A., Calderini, G., Di Carlo, S., Carpinelli, M., Cartaro, C., Casarosa, G., Cenci, R., Chao, D. S., Chauveau, J., Cheaib, R., Chen, A., Chen, C., Cheng, C. H., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Chrzaszcz, M., Cibinetto, G., Cinabro, D., Cochran, J., Coleman, J. P., Convery, M. R., Cowan, G., Cowan, R., Cremaldi, L., Cunliffe, S., Dash, N., Davier, M., Davis, C. L., De Mori, F., De Nardo, G., Denig, A. G., de Sangro, R., Dey, B., Di Lodovico, F., Dittrich, S., Doležal, Z., Dorfan, J., Drásal, Z., Druzhinin, V. P., Dunwoodie, W., Ebert, M., Echenard, B., Eidelman, S., Eigen, G., Eisner, A. M., Emery, S., Epifanov, D., Ernst, J. A., Faccini, R., Fast, J. E., Feindt, M., Ferber, T., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., Flood, K. T., Forti, F., Fritsch, M., Fulsom, B. G., Gabathuler, E., Gamba, D., Garg, R., Garmash, A., Gary, J. W., Garzia, I., Gaur, V., Gaz, A., Gelb, M., Gershon, T. J., Gioi, L. Li, Giorgi, M. A., Giri, A., Godang, R., Goldenzweig, P., Golob, B., Golubev, V. B., Gorodeisky, R., Gradl, W., Graham, M. T., Grauges, E., Griessinger, K., Gritsan, A. V., Grünberg, O., Guan, Y., Guido, E., Guttman, N., Haba, J., Hafner, A., Hara, T., Harrison, P. F., Hast, C., Hayasaka, K., Hayashii, H., Hearty, C., Heck, M., Hedges, M. T., Heß, M., Hirose, S., Hitlin, D. G., Honscheid, K., Hou, W. -S., Hsu, C. -L., Huard, Z., Van Hulse, C., Hutchcroft, D. E., Inami, K., Inguglia, G., Innes, W. R., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Izen, J. M., Jacobs, W. W., Jawahery, A., Jessop, C. P., Jia, S., Jin, Y., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kass, R., Kichimi, H., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, J., Kim, P., King, G. J., Kinoshita, K., Koch, H., Kodyš, P., Kolomensky, Yu. G., Korpar, S., Kotchetkov, D., Kowalewski, R., Kravchenko, E. A., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lacker, H. M., Lafferty, G. D., Lanceri, L., Lange, J. S., Lange, D. J., Lankford, A. J., Latham, T. E., Leddig, T., Diberder, F. Le, Lee, I. S., Lee, S. C., Lees, J. P., Leith, D. W. G. S., Li, L. K., Li, Y. B., Li, Y., Libby, J., Liventsev, D., Lockman, W. S., Long, O., LoSecco, J. M., Lou, X. C., Lubej, M., Lueck, T., Luitz, S., Luo, T., Luppi, E., Lusiani, A., Lutz, A. M., MacFarlane, D. B., MacNaughton, J., Mallik, U., Manoni, E., Marchiori, G., Margoni, M., Martellotti, S., Martinez-Vidal, F., Masuda, M., Matsuda, T., Mattison, T. S., Matvienko, D., McKenna, J. A., Meadows, B. T., Merola, M., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Muller, D. R., Müller, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Neal, H., Neri, N., Nisar, N. K., Nishida, S., Nugent, I. M., Oberhof, B., Ocariz, J., Ogawa, S., Ongmongkolkul, P., Ono, H., Onuchin, A. P., Onuki, Y., Oyanguren, A., Pakhlov, P., Pakhlova, G., Pal, B., Palano, A., Palombo, F., Vazquez, W. Panduro, Paoloni, E., Pardi, S., Park, H., Passaggio, S., Patrignani, C., Patteri, P., Paul, S., Pavelkin, I., Payne, D. J., Pedlar, T. K., Peimer, D. R., Peruzzi, I. M., Pestotnik, R., Piccolo, M., Piilonen, L. E., Pilloni, A., Piredda, G., Poireau, V., Popov, V., Porter, F. C., Posocco, M., Prell, S., Prepost, R., Puccio, E. M. T., Purohit, M. V., Pushpawela, B. G., Rama, M., Randle-Conde, A., Ratcliff, B. N., Raven, G., Resmi, P. K., Ritchie, J. L., Ritter, M., Rizzo, G., Roberts, D. A., Robertson, S. H., Röhrken, M., Roney, J. M., Roodman, A., Rossi, A., Rotondo, M., Rozanska, M., Russo, G., Sacco, R., Said, S. Al, Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Santoro, V., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schroeder, T., Schubert, K. R., Schwanda, C., Schwartz, A. J., Schwitters, R. F., Sciacca, C., Seddon, R. M., Seino, Y., Sekula, S. J., Senyo, K., Seon, O., Serednyakov, S. I., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Simi, G., Simon, F., Simonetto, F., Skovpen, Yu. I., Smith, J. G., Smith, A. J. S., So, R. Y., Sobie, R. J., Soffer, A., Sokoloff, M. D., Solodov, E. P., Solovieva, E., Spanier, S. M., Starič, M., Stroili, R., Sullivan, M. K., Sumisawa, K., Sumiyoshi, T., Summers, D. J., Sun, L., Takizawa, M., Tamponi, U., Tanida, K., Taras, P., Tasneem, N., Tenchini, F., Tisserand, V., Todyshevx, K. Yu., Touramanis, C., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Varner, G., Vasseur, G., Va'vra, J., Červenkov, D., Verderi, M., Vitale, L., Vorobyev, V., Voß, C., Wagner, S. R., Waheed, E., Waldi, R., Walsh, J. J., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., Wilson, F. F., Wilson, J. R., Wisniewski, W. J., Won, E., Wormser, G., Wright, D. M., Wu, S. L., Ye, H., Yuan, C. Z., Yusa, Y., Zakharov, S., Zallo, A., Zani, L., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.

Subjects
High Energy Physics - Experiment
Abstract

We present first evidence that the cosine of the CP-violating weak phase $2\beta$ is positive, and hence exclude trigonometric multifold solutions of the CKM Unitarity Triangle using a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays, where $h^{0} \in \{\pi^{0}, \eta, \omega \}$ denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BaBar and Belle experiments collected at the $\Upsilon(4S)$ resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain $( 471 \pm 3 )\times 10^6\, B\bar{B}$ pairs recorded by the BaBar detector and $( 772 \pm 11 )\times 10^6\, B\bar{B}$ pairs recorded by the Belle detector. The results of the measurement are $\sin{2\beta} = 0.80 \pm 0.14 \,(\rm{stat.}) \pm 0.06 \,(\rm{syst.}) \pm 0.03 \,(\rm{model})$ and $\cos{2\beta} = 0.91 \pm 0.22 \,(\rm{stat.}) \pm 0.09 \,(\rm{syst.}) \pm 0.07 \,(\rm{model})$. The result for the direct measurement of the angle $\beta$ of the CKM Unitarity Triangle is $\beta = \left( 22.5 \pm 4.4 \,(\rm{stat.}) \pm 1.2 \,(\rm{syst.}) \pm 0.6 \,(\rm{model}) \right)^{\circ}$. The quoted model uncertainties are due to the composition of the $D^{0} \to K_{S}^{0} \pi^{+} \pi^{-}$ decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics $e^{+}e^{-} \to c\bar{c}$ data sample. CP violation is observed in $B^{0} \to D^{(*)} h^{0}$ decays at the level of $5.1$ standard deviations. The significance for $\cos{2\beta}>0$ is $3.7$ standard deviations. The trigonometric multifold solution $\pi/2 - \beta = (68.1 \pm 0.7)^{\circ}$ is excluded at the level of $7.3$ standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle., Comment: To be submitted to Physical Review Letters

Published
2018
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27. Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors

Author

Agnese, R., Anderson, A. J., Aramaki, T., Baker, W., Balakishiyeva, D., Banik, S., Barker, D., Thakur, R. Basu, Bauer, D. A., Binder, T., Borgland, A., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Calkins, R., Cartaro, C., Cerdeno, D. G., Chagani, H., Chang, Y. -Y., Chen, Y., Cooley, J., Cornell, B., Cushman, P., Daal, M., Doughty, T., Dragowsky, E. M., Esteban, L., Fallows, S., Fascione, E., Figueroa-Feliciano, E., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Godfrey, G. L., Golwala, S. R., Hall, J., Harris, H. R., Holmgren, D., Hong, Z., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Leder, A., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., McCarthy, K. A., Miller, E. H., Mirabolfathi, N., Moffatt, R. A., Mohanty, B., Moore, D., Mendoza, J. D. Morales, Nelson, J., Oser, S. M., Page, K., Page, W. A., Partridge, R., Martinez, M. Penalver, Pepin, M., Phipps, A., Poudel, S., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Roberts, A., Rogers, H. E., Robinson, A. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Di Stefano, P. C. F., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Welliver, B., Wilson, J. S., Wilson, M. J., Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract

The Cryogenic Dark Matter Search (CDMS II) experiment aims to detect dark matter particles that elastically scatter from nuclei in semiconductor detectors. The resulting nuclear-recoil energy depositions are detected by ionization and phonon sensors. Neutrons produce a similar spectrum of low-energy nuclear recoils in such detectors, while most other backgrounds produce electron recoils. The absolute energy scale for nuclear recoils is necessary to interpret results correctly. The energy scale can be determined in CDMS II silicon detectors using neutrons incident from a broad-spectrum $^{252}$Cf source, taking advantage of a prominent resonance in the neutron elastic scattering cross section of silicon at a recoil (neutron) energy near 20 (182) keV. Results indicate that the phonon collection efficiency for nuclear recoils is $4.8^{+0.7}_{-0.9}$% lower than for electron recoils of the same energy. Comparisons of the ionization signals for nuclear recoils to those measured previously by other groups at higher electric fields indicate that the ionization collection efficiency for CDMS II silicon detectors operated at $\sim$4 V/cm is consistent with 100% for nuclear recoils below 20 keV and gradually decreases for larger energies to $\sim$75% at 100 keV. The impact of these measurements on previously published CDMS II silicon results is small., Comment: 22 pages, 17 figures, 1 table, 1 appendix

Published
2018
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28. Search for low-mass dark matter with CDMSlite using a profile likelihood fit

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cameron, RA, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Cornell, B, Cushman, P, De Brienne, F, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, CW, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Herbert, N, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, E, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nelson, J, Neog, H, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Ren, R, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, and Young, BA

Subjects
astro-ph.CO, physics.ins-det, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (

Published
2019

29. First Evidence for cos2β>0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, and Epifanov, D

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, BABAR Collaboration, Belle Collaboration, hep-ex, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B^{0}→D^{(*)}h^{0} with D→K_{S}^{0}π^{+}π^{-} decays, where h^{0}∈{π^{0},η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6}BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6}BB[over ¯] pairs recorded by the Belle detector. The results of the measurement are sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B^{0}→D^{(*)}h^{0} decays. The quoted model uncertainties are due to the composition of the D^{0}→K_{S}^{0}π^{+}π^{-} decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e^{+}e^{-}→cc[over ¯] data sample. CP violation is observed in B^{0}→D^{(*)}h^{0} decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.

Published
2018

30. Measurement of cos2β in B0→D(*)h0 with D→KS0π+π- decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, and Ernst, JA

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

We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB pairs collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(∗)h0 decays. The measurement assumes no direct CP violation in B0→D(∗)h0 decays.

Published
2018

31. Measurement of cos2β in B0 →d (∗)h0 with D → KS0 π+π- decays by a combined time-dependent Dalitz plot analysis of B a B ar and Belle data

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, S, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, De Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, DoleŽal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, and Ernst, JA

Subjects
hep-ex
Abstract

We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB pairs collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(∗)h0 decays. The measurement assumes no direct CP violation in B0→D(∗)h0 decays.

Published
2018

32. Results from the Super Cryogenic Dark Matter Search (SuperCDMS) experiment at Soudan

Author

SuperCDMS Collaboration, Agnese, R., Aramaki, T., Arnquist, I. J., Baker, W., Balakishiyeva, D., Banik, S., Barker, D., Thakur, R. Basu, Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Calkins, R., Cartaro, C., Cerdeño, D. G., Chang, Y., Chen, Y., Cooley, J., Cornell, B., Cushman, P., Daal, M., Di Stefano, P. C. F., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Godfrey, G. L., Golwala, S. R., Hall, J., Harris, H. R., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E. H., Mirabolfathi, N., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Orrell, J. L., Oser, S. M., Page, K., Page, W. A., Partridge, R., Martinez, M. Penalver, Pepin, M., Phipps, A., Poudel, S., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Welliver, B., Wilson, J. S., Wilson, M. J., Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, X., and Zhao, X.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report the result of a blinded search for Weakly Interacting Massive Particles (WIMPs) using the majority of the SuperCDMS Soudan dataset. With an exposure of 1690 kg days, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP--nucleon cross section of $1.4 \times 10^{-44}$ ($1.0 \times 10^{-44}$) cm$^2$ at 46 GeV/$c^2$. These results set the strongest limits for WIMP--germanium-nucleus interactions for masses $>$12 GeV/$c^2$.

Published
2017
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33. Low-Mass Dark Matter Search with CDMSlite

Author

SuperCDMS Collaboration, Agnese, R., Anderson, A. J., Aralis, T., Aramaki, T., Arnquist, I. J., Baker, W., Balakishiyeva, D., Barker, D., Thakur, R. Basu, Bauer, D. A., Binder, T., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Calkins, R., Cartaro, C., Cerdeno, D. G., Chang, Y., Chagani, H., Chen, Y., Cooley, J., Cornell, B., Cushman, P., Daal, M., Di Stefano, P. C. F., Doughty, T., Esteban, L., Fascione, E., Figueroa-Feliciano, E., Fritts, M., Gerbier, G., Ghaith, M., Godfrey, G. L., Golwala, S. R., Hall, J., Harris, H. R., Hong, Z., Hoppe, E. W., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Leder, A., Loer, B., Asamar, E. Lopez, Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E. H., Mirabolfathi, N., Moffatt, R. A., Mohanty, B., Mendoza, J. D. Morales, Nelson, J., Orrell, J. L., Oser, S. M., Page, K., Page, W. A., Partridge, R., Pepin, M., Martinez, M. Penalver, Phipps, A., Poudel, S., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Reynolds, T., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Welliver, B., Wilson, J. S., Wilson, M. J, Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The SuperCDMS experiment is designed to directly detect weakly interacting massive particles (WIMPs) that may constitute the dark matter in our Galaxy. During its operation at the Soudan Underground Laboratory, germanium detectors were run in the CDMSlite mode to gather data sets with sensitivity specifically for WIMPs with masses ${<}$10 GeV/$c^2$. In this mode, a higher detector-bias voltage is applied to amplify the phonon signals produced by drifting charges. This paper presents studies of the experimental noise and its effect on the achievable energy threshold, which is demonstrated to be as low as 56 eV$_{\text{ee}}$ (electron equivalent energy). The detector-biasing configuration is described in detail, with analysis corrections for voltage variations to the level of a few percent. Detailed studies of the electric-field geometry, and the resulting successful development of a fiducial parameter, eliminate poorly measured events, yielding an energy resolution ranging from ${\sim}$9 eV$_{\text{ee}}$ at 0 keV to 101 eV$_{\text{ee}}$ at ${\sim}$10 eV$_{\text{ee}}$. New results are derived for astrophysical uncertainties relevant to the WIMP-search limits, specifically examining how they are affected by variations in the most probable WIMP velocity and the Galactic escape velocity. These variations become more important for WIMP masses below 10 GeV/$c^2$. Finally, new limits on spin-dependent low-mass WIMP-nucleon interactions are derived, with new parameter space excluded for WIMP masses $\lesssim$3 GeV/$c^2$, Comment: 30 Pages, 33 Figures v3 to match published version in PRD. v2 contains public release (and documentation) of the CDMSlite Run 2 data as ancillary files

Published
2017
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34. First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Author

Agnese, R, Aralis, T, Aramaki, T, Arnquist, IJ, Azadbakht, E, Baker, W, Banik, S, Barker, D, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y-Y, Cooley, J, Cornell, B, Cushman, P, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fink, C, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Golwala, SR, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Lawrence, RE, Leyva, JV, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nelson, J, Orrell, JL, Oser, SM, Page, WA, Partridge, R, Pepin, M, Phipps, A, Ponce, F, Poudel, S, Pyle, M, Qiu, H, Rau, W, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Romani, RK, Saab, T, Sadoulet, B, Sander, J, Scarff, A, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, So, J, Speller, D, Stanford, C, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Watkins, SL, Wilson, JS, Wilson, MJ, Winchell, J, Wright, DH, Yellin, S, Young, BA, and Zhang, X

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex, astro-ph.CO, physics.ins-det, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype SuperCDMS detector having a charge resolution of 0.1 electron-hole pairs (CDMS HVeV, a 0.93 g CDMS high-voltage device). These electron-recoil limits significantly improve experimental constraints on dark matter particles with masses as low as 1  MeV/c^{2}. We demonstrate a sensitivity to dark photons competitive with other leading approaches but using substantially less exposure (0.49 g d). These results demonstrate the scientific potential of phonon-mediated semiconductor detectors that are sensitive to single electronic excitations.

Published
2018

35. Results from the Super Cryogenic Dark Matter Search Experiment at Soudan

Author

Agnese, R, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Banik, S, Barker, D, Thakur, R Basu, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Germond, R, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Loer, B, Asamar, E Lopez, Lukens, P, MacDonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Mohanty, B, Mendoza, JD Morales, Nelson, J, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Martinez, M Penalver, Pepin, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Welliver, B, Wilson, JS, Wilson, MJ, Wright, DH, Yellin, S, and Yen, JJ

Subjects
SuperCDMS Collaboration, hep-ex, hep-ph, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report the result of a blinded search for weakly interacting massive particles (WIMPs) using the majority of the SuperCDMS Soudan data set. With an exposure of 1690 kg d, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP-nucleon cross section of 1.4×10^{-44} (1.0×10^{-44})  cm^{2} at 46  GeV/c^{2}. These results set the strongest limits for WIMP-germanium-nucleus interactions for masses >12  GeV/c^{2}.

Published
2018

36. Low-mass dark matter search with CDMSlite

Author

Agnese, R, Anderson, AJ, Aralis, T, Aramaki, T, Arnquist, IJ, Baker, W, Balakishiyeva, D, Barker, D, Basu Thakur, R, Bauer, DA, Binder, T, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chang, Y, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fascione, E, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hong, Z, Hoppe, EW, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Jena, C, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Lopez Asamar, E, Lukens, P, Macdonell, D, Mahapatra, R, Mandic, V, Mast, N, Miller, EH, Mirabolfathi, N, Moffatt, RA, Mohanty, B, Morales Mendoza, JD, Nelson, J, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Peñalver Martinez, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Reynolds, T, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Scorza, S, Senapati, K, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, Von Krosigk, B, Welliver, B, and Wilson, JS

Subjects
astro-ph.CO, astro-ph.IM, hep-ex, physics.ins-det
Abstract

The SuperCDMS experiment is designed to directly detect weakly interacting massive particles (WIMPs) that may constitute the dark matter in our Galaxy. During its operation at the Soudan Underground Laboratory, germanium detectors were run in the CDMSlite mode to gather data sets with sensitivity specifically for WIMPs with masses

Published
2018

37. Projected Sensitivity of the SuperCDMS SNOLAB experiment

Author

Agnese, R., Anderson, A. J., Aramaki, T., Arnquist, I., Baker, W., Barker, D., Thakur, R. Basu, Bauer, D. A., Borgland, A., Bowles, M. A., Brink, P. L., Bunker, R., Cabrera, B., Caldwell, D. O., Calkins, R., Cartaro, C., Cerdeño, D. G., Chagani, H., Chen, Y., Cooley, J., Cornell, B., Cushman, P., Daal, M., Di Stefano, P. C. F., Doughty, T., Esteban, L., Fallows, S., Figueroa-Feliciano, E., Fritts, M., Gerbier, G., Ghaith, M., Godfrey, G. L., Golwala, S. R., Hall, J., Harris, H. R., Hofer, T., Holmgren, D., Hong, Z., Hoppe, E., Hsu, L., Huber, M. E., Iyer, V., Jardin, D., Jastram, A., Kelsey, M. H., Kennedy, A., Kubik, A., Kurinsky, N. A., Leder, A., Loer, B., Asamar, E. Lopez, Lukens, P., Mahapatra, R., Mandic, V., Mast, N., Mirabolfathi, N., Moffatt, R. A., Mendoza, J. D. Morales, Orrell, J. L., Oser, S. M., Page, K., Page, W. A., Partridge, R., Pepin, M., Phipps, A., Poudel, S., Pyle, M., Qiu, H., Rau, W., Redl, P., Reisetter, A., Roberts, A., Robinson, A. E., Rogers, H. E., Saab, T., Sadoulet, B., Sander, J., Schneck, K., Schnee, R. W., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H. A., Toback, D., Underwood, R., Villano, A. N., von Krosigk, B., Welliver, B., Wilson, J. S., Wright, D. H., Yellin, S., Yen, J. J., Young, B. A., Zhang, X., and Zhao, X.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

SuperCDMS SNOLAB will be a next-generation experiment aimed at directly detecting low-mass (< 10 GeV/c$^2$) particles that may constitute dark matter by using cryogenic detectors of two types (HV and iZIP) and two target materials (germanium and silicon). The experiment is being designed with an initial sensitivity to nuclear recoil cross sections ~ 1 x 10$^{-43}$ cm$^2$ for a dark matter particle mass of 1 GeV/c$^2$, and with capacity to continue exploration to both smaller masses and better sensitivities. The phonon sensitivity of the HV detectors will be sufficient to detect nuclear recoils from sub-GeV dark matter. A detailed calibration of the detector response to low energy recoils will be needed to optimize running conditions of the HV detectors and to interpret their data for dark matter searches. Low-activity shielding, and the depth of SNOLAB, will reduce most backgrounds, but cosmogenically produced $^{3}$H and naturally occurring $^{32}$Si will be present in the detectors at some level. Even if these backgrounds are x10 higher than expected, the science reach of the HV detectors would be over three orders of magnitude beyond current results for a dark matter mass of 1 GeV/c$^2$. The iZIP detectors are relatively insensitive to variations in detector response and backgrounds, and will provide better sensitivity for dark matter particle masses (> 5 GeV/c$^2$). The mix of detector types (HV and iZIP), and targets (germanium and silicon), planned for the experiment, as well as flexibility in how the detectors are operated, will allow us to maximize the low-mass reach, and understand the backgrounds that the experiment will encounter. Upgrades to the experiment, perhaps with a variety of ultra-low-background cryogenic detectors, will extend dark matter sensitivity down to the "neutrino floor", where coherent scatters of solar neutrinos become a limiting background., Comment: SuperCDMS SNOLAB Projected sensitivity reach

Published
2016
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38. Projected sensitivity of the SuperCDMS SNOLAB experiment

Author

Agnese, R, Anderson, AJ, Aramaki, T, Arnquist, I, Baker, W, Barker, D, Thakur, R Basu, Bauer, DA, Borgland, A, Bowles, MA, Brink, PL, Bunker, R, Cabrera, B, Caldwell, DO, Calkins, R, Cartaro, C, Cerdeño, DG, Chagani, H, Chen, Y, Cooley, J, Cornell, B, Cushman, P, Daal, M, Di Stefano, PCF, Doughty, T, Esteban, L, Fallows, S, Figueroa-Feliciano, E, Fritts, M, Gerbier, G, Ghaith, M, Godfrey, GL, Golwala, SR, Hall, J, Harris, HR, Hofer, T, Holmgren, D, Hong, Z, Hoppe, E, Hsu, L, Huber, ME, Iyer, V, Jardin, D, Jastram, A, Kelsey, MH, Kennedy, A, Kubik, A, Kurinsky, NA, Leder, A, Loer, B, Asamar, E Lopez, Lukens, P, Mahapatra, R, Mandic, V, Mast, N, Mirabolfathi, N, Moffatt, RA, Mendoza, JD Morales, Orrell, JL, Oser, SM, Page, K, Page, WA, Partridge, R, Pepin, M, Phipps, A, Poudel, S, Pyle, M, Qiu, H, Rau, W, Redl, P, Reisetter, A, Roberts, A, Robinson, AE, Rogers, HE, Saab, T, Sadoulet, B, Sander, J, Schneck, K, Schnee, RW, Serfass, B, Speller, D, Stein, M, Street, J, Tanaka, HA, Toback, D, Underwood, R, Villano, AN, von Krosigk, B, Welliver, B, Wilson, JS, Wright, DH, Yellin, S, Yen, JJ, Young, BA, Zhang, X, and Zhao, X

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

SuperCDMS SNOLAB will be a next-generation experiment aimed at directly detecting low-mass particles (with masses ≤10 GeV/c2) that may constitute dark matter by using cryogenic detectors of two types (HV and iZIP) and two target materials (germanium and silicon). The experiment is being designed with an initial sensitivity to nuclear recoil cross sections ∼1×10-43 cm2 for a dark matter particle mass of 1 GeV/c2, and with capacity to continue exploration to both smaller masses and better sensitivities. The phonon sensitivity of the HV detectors will be sufficient to detect nuclear recoils from sub-GeV dark matter. A detailed calibration of the detector response to low-energy recoils will be needed to optimize running conditions of the HV detectors and to interpret their data for dark matter searches. Low-activity shielding, and the depth of SNOLAB, will reduce most backgrounds, but cosmogenically produced H3 and naturally occurring Si32 will be present in the detectors at some level. Even if these backgrounds are 10 times higher than expected, the science reach of the HV detectors would be over 3 orders of magnitude beyond current results for a dark matter mass of 1 GeV/c2. The iZIP detectors are relatively insensitive to variations in detector response and backgrounds, and will provide better sensitivity for dark matter particles with masses 5 GeV/c2. The mix of detector types (HV and iZIP), and targets (germanium and silicon), planned for the experiment, as well as flexibility in how the detectors are operated, will allow us to maximize the low-mass reach, and understand the backgrounds that the experiment will encounter. Upgrades to the experiment, perhaps with a variety of ultra-low-background cryogenic detectors, will extend dark matter sensitivity down to the "neutrino floor," where coherent scatters of solar neutrinos become a limiting background.

Published
2017

39. 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

40. 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. F., Arinstein, K., Arisaka, K., Asai, K., Asai, M., Asano, Y., Asgeirsson, D. J., Asner, D. M., Aso, T., Aspinwall, M. L., Aston, D., Atmacan, H., Aubert, B., Aulchenko, V., Ayad, R., Azemoon, T., Aziz, T., Azzolini, V., Azzopardi, D. E., Baak, M. A., Back, J. J., Bagnasco, S., Bahinipati, S., Bailey, D. S., Bailey, S., Bailly, P., van Bakel, N., Bakich, A. M., Bala, A., Balagura, V., Baldini-Ferroli, R., Ban, Y., Banas, E., Band, H. R., Banerjee, S., Baracchini, E., Barate, R., Barberio, E., Barbero, M., Bard, D. J., Barillari, T., Barlow, N. R., Barlow, R. J., Barrett, M., Bartel, W., Bartelt, J., Bartoldus, R., Batignani, G., Battaglia, M., Bauer, J. M., Bay, A., Beaulieu, M., Bechtle, P., Beck, T. W., Becker, J., Becla, J., Bedny, I., Behari, S., Behera, P. K., Behn, E., Behr, L., Beigbeder, C., Beiline, D., Bell, R., Bellini, F., Bellodi, G., Belous, K., Benayoun, M., Benelli, G., Benitez, J. F., Benkebil, M., Berger, N., Bernabeu, J., Bernard, D., Bernet, R., Bernlochner, F. U., Berryhill, J. W., Bertsche, K., Besson, P., Best, D. S., Bettarini, S., Bettoni, D., Bhardwaj, V., Bhimji, W., Bhuyan, B., Biagini, M. E., Biasini, M., van Bibber, K., Biesiada, J., Bingham, I., Bionta, R. M., Bischofberger, M., Bitenc, U., Bizjak, I., Blanc, F., Blaylock, G., Blinov, V. E., Bloom, E., Bloom, P. C., Blount, N. L., Blouw, J., Bly, M., Blyth, S., Boeheim, C. T., Bomben, M., Bondar, A., Bondioli, M., Bonneaud, G. R., Bonvicini, G., Booke, M., Booth, J., Borean, C., Borgland, A. W., Borsato, E., Bosi, F., Bosisio, L., Botov, A. A., Bougher, J., Bouldin, K., Bourgeois, P., Boutigny, D., Bowerman, D. A., Boyarski, A. M., Boyce, R. F., Boyd, J. T., Bozek, A., Bozzi, C., Bračko, M., Brandenburg, G., Brandt, T., Brau, B., Brau, J., Breon, A. B., Breton, D., Brew, C., Briand, H., Bright-Thomas, P. G., Brigljević, V., Britton, D. I., Brochard, F., Broomer, B., Brose, J., Browder, T. E., Brown, C. L., Brown, C. M., Brown, D. N., Browne, M., Bruinsma, M., Brunet, S., Bucci, F., Buchanan, C., Buchmueller, O. L., Bünger, C., Bugg, W., Bukin, A. D., Bula, R., Bulten, H., Burchat, P. R., Burgess, W., Burke, J. P., Button-Shafer, J., Buzykaev, A. R., Buzzo, A., Cai, Y., Calabrese, R., Calcaterra, A., Calderini, G., Camanzi, B., Campagna, E., Campagnari, C., Capra, R., Carassiti, V., Carpinelli, M., Carroll, M., Casarosa, G., Casey, B. C. K., Cason, N. M., Castelli, G., Cavallo, N., Cavoto, G., Cecchi, A., Cenci, R., Cerizza, G., Cervelli, A., Ceseracciu, A., Chai, X., Chaisanguanthum, K. S., Chang, M. C., Chang, Y. H., Chang, Y. W., Chao, D. S., Chao, M., Chao, Y., Charles, E., Chavez, C. A., Cheaib, R., Chekelian, V., Chen, A., Chen, E., Chen, G. P., Chen, H. F., Chen, J. -H., Chen, J. C., Chen, K. F., Chen, P., Chen, S., Chen, W. T., Chen, X., Chen, X. R., Chen, Y. Q., Cheng, B., Cheon, B. G., Chevalier, N., Chia, Y. M., Chidzik, S., Chilikin, K., Chistiakova, M. V., Cizeron, R., Cho, I. S., Cho, K., Chobanova, V., Choi, H. H. F., Choi, K. S., Choi, S. K., Choi, Y., Choi, Y. K., Christ, S., Chu, P. H., Chun, S., Chuvikov, A., Cibinetto, G., Cinabro, D., Clark, A. R., Clark, P. J., Clarke, C. K., Claus, R., Claxton, B., Clifton, Z. C., Cochran, J., Cohen-Tanugi, J., Cohn, H., Colberg, T., Cole, S., Colecchia, F., Condurache, C., Contri, R., Convert, P., Convery, M. R., Cooke, P., Copty, N., Cormack, C. M., Corso, F. Dal, Corwin, L. A., Cossutti, F., Cote, D., Ramusino, A. Cotta, Cottingham, W. N., Couderc, F., Coupal, D. P., Covarelli, R., Cowan, G., Craddock, W. W., Crane, G., Crawley, H. B., Cremaldi, L., Crescente, A., Cristinziani, M., Crnkovic, J., Crosetti, G., Cuhadar-Donszelmann, T., Cunha, A., Curry, S., D'Orazio, A., Dû, S., Dahlinger, G., Dahmes, B., Dallapiccola, C., Danielson, N., Danilov, M., Das, A., Dash, M., Dasu, S., Datta, M., Daudo, F., Dauncey, P. D., David, P., Davis, C. L., Day, C. 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. M., Elmer, P., Emery, S., Enari, Y., Enomoto, R., Erdos, E., Erickson, R., Ernst, J. A., Erwin, R. J., Escalier, M., Eschenburg, V., Eschrich, I., Esen, S., Esteve, L., Evangelisti, F., Everton, C. W., Eyges, V., Fabby, C., Fabozzi, F., Fahey, S., Falbo, M., Fan, S., Fang, F., Fanin, C., Farbin, A., Farhat, H., Fast, J. E., Feindt, M., Fella, A., Feltresi, E., Ferber, T., Fernholz, R. E., Ferrag, S., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., da Costa, J. Firmino, Fischer, P. -A., Fisher, A., Fisher, P. H., Flacco, C. J., Flack, R. L., Flaecher, H. U., Flanagan, J., Flanigan, J. M., Ford, K. E., Ford, W. T., Forster, I. J., Forti, A. C., Forti, F., Fortin, D., Foster, B., Foulkes, S. D., Fouque, G., Fox, J., Franchini, P., Sevilla, M. Franco, Franek, B., Frank, E. D., Fransham, K. B., Fratina, S., Fratini, K., Frey, A., Frey, R., Friedl, M., Fritsch, M., Fry, J. R., Fujii, H., Fujikawa, M., Fujita, Y., Fujiyama, Y., Fukunaga, C., Fukushima, M., Fullwood, J., Funahashi, Y., Funakoshi, Y., Furano, F., Furman, M., Furukawa, K., Futterschneider, H., Gabathuler, E., Gabriel, T. A., Gabyshev, N., Gaede, F., Gagliardi, N., Gaidot, A., Gaillard, J. -M., Gaillard, J. R., Galagedera, S., Galeazzi, F., Gallo, F., Gamba, D., Gamet, R., Gan, K. K., Gandini, P., Ganguly, S., Ganzhur, S. F., Gao, Y. Y., Gaponenko, I., Garmash, A., Tico, J. Garra, Garzia, I., Gaspero, M., Gastaldi, F., Gatto, C., Gaur, V., Geddes, N. I., Geld, T. L., Genat, J. -F., George, K. A., George, M., George, S., Georgette, Z., Gershon, T. J., Gill, M. S., Gillard, R., Gilman, J. D., Giordano, F., Giorgi, M. A., Giraud, P. -F., Gladney, L., Glanzman, T., Glattauer, R., Go, A., Goetzen, K., Goh, Y. M., Gokhroo, G., Goldenzweig, P., Golubev, V. B., Gopal, G. P., Gordon, A., Gorišek, A., Goriletsky, V. I., Gorodeisky, R., Gosset, L., Gotow, K., Gowdy, S. J., Graffin, P., Grancagnolo, S., Grauges, E., Graziani, G., Green, M. G., Greene, M. G., Grenier, G. J., Grenier, P., Griessinger, K., Grillo, A. A., Grinyov, B. V., Gritsan, A. V., Grosdidier, G., Perdekamp, M. Grosse, Grosso, P., Grothe, M., Groysman, Y., Grünberg, O., Guido, E., Guler, H., Gunawardane, N. J. W., Guo, Q. H., Guo, R. S., Guo, Z. J., Guttman, N., Ha, H., Ha, H. C., Haas, T., Haba, J., Hachtel, J., Hadavand, H. K., Hadig, T., Hagner, C., Haire, M., Haitani, F., Haji, T., Haller, G., Halyo, V., Hamano, K., Hamasaki, H., de Monchenault, G. Hamel, Hamilton, J., Hamilton, R., Hamon, O., Han, B. Y., Han, Y. L., Hanada, H., Hanagaki, K., Handa, F., Hanson, J. E., Hanushevsky, A., Hara, K., Hara, T., Harada, Y., Harrison, P. F., Harrison, T. J., Harrop, B., Hart, A. J., Hart, P. A., Hartfiel, B. L., Harton, J. L., Haruyama, T., Hasan, A., Hasegawa, Y., Hast, C., Hastings, N. C., Hasuko, K., Hauke, A., Hawkes, C. M., Hayashi, K., Hazumi, M., Hee, C., Heenan, E. M., Heffernan, D., Held, T., Henderson, R., Henderson, S. W., Hertzbach, S. S., Hervé, S., Heß, M., Heusch, C. A., Hicheur, A., Higashi, Y., Higasino, Y., Higuchi, I., Hikita, S., Hill, E. J., Himel, T., Hinz, L., Hirai, T., Hirano, H., Hirschauer, J. F., Hitlin, D. G., Hitomi, N., Hodgkinson, M. C., Höcker, A., Hoi, C. T., Hojo, T., Hokuue, T., Hollar, J. J., Hong, T. M., Honscheid, K., Hooberman, B., Hopkins, D. A., Horii, Y., Hoshi, Y., Hoshina, K., Hou, S., Hou, W. S., Hryn'ova, T., Hsiung, Y. B., Hsu, C. L., Hsu, S. C., Hu, H., Hu, T., Huang, H. C., Huang, T. J., Huang, Y. C., Huard, Z., Huffer, M. E., Hufnagel, D., Hung, T., Hutchcroft, D. E., Hyun, H. J., Ichizawa, S., Igaki, T., Igarashi, A., Igarashi, S., Igarashi, Y., Igonkina, O., Ikado, K., Ikeda, H., Ikeda, K., Ilic, J., Inami, K., Innes, W. R., Inoue, Y., Ishikawa, A., Ishino, H., Itagaki, K., Itami, S., Itoh, K., Ivanchenko, V. N., Iverson, R., Iwabuchi, M., Iwai, G., Iwai, M., Iwaida, S., Iwamoto, M., Iwasaki, H., Iwasaki, M., Iwashita, T., Izen, J. M., Jackson, D. J., Jackson, F., Jackson, G., Jackson, P. S., Jacobsen, R. G., Jacoby, C., Jaegle, I., Jain, V., Jalocha, P., Jang, H. K., Jasper, H., Jawahery, A., Jayatilleke, S., Jen, C. M., Jensen, F., Jessop, C. P., Ji, X. B., John, M. J. J., Johnson, D. R., Johnson, J. R., Jolly, S., Jones, M., Joo, K. K., Joshi, N., Joshi, N. J., Judd, D., Julius, T., Kadel, R. W., Kadyk, J. A., Kagan, H., Kagan, R., Kah, D. H., Kaiser, S., Kaji, H., Kajiwara, S., Kakuno, H., Kameshima, T., Kaminski, J., Kamitani, T., Kaneko, J., Kang, J. H., Kang, J. S., Kani, T., Kapusta, P., Karbach, T. M., Karolak, M., Karyotakis, Y., Kasami, K., Katano, G., Kataoka, S. U., Katayama, N., Kato, E., Kato, Y., Kawai, H., Kawai, M., Kawamura, N., Kawasaki, T., Kay, J., Kay, M., Kelly, M. P., Kelsey, M. H., Kent, N., Kerth, L. T., Khan, A., Khan, H. R., Kharakh, D., Kibayashi, A., Kichimi, H., Kiesling, C., Kikuchi, M., Kikutani, E., Kim, B. H., Kim, C. H., Kim, D. W., Kim, H., Kim, H. J., Kim, H. O., Kim, H. W., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, P., Kim, S. K., Kim, S. M., Kim, T. H., Kim, Y. I., Kim, Y. J., King, G. J., Kinoshita, K., Kirk, A., Kirkby, D., Kitayama, I., Klemetti, M., Klose, V., Klucar, J., Knecht, N. S., Knoepfel, K. J., Knowles, D. J., Ko, B. R., Kobayashi, N., Kobayashi, S., Kobayashi, T., Kobel, M. J., Koblitz, S., Koch, H., Kocian, M. L., Kodyš, P., Koeneke, K., Kofler, R., Koike, S., Koishi, S., Koiso, H., Kolb, J. A., Kolya, S. D., Kondo, Y., Konishi, H., Koppenburg, P., Koptchev, V. B., Kordich, T. M. B., Korol, A. A., Korotushenko, K., Korpar, S., Kouzes, R. T., Kovalskyi, D., Kowalewski, R., Kozakai, Y., Kozanecki, W., Kral, J. F., Krasnykh, A., Krause, R., Kravchenko, E. A., Krebs, J., Kreisel, A., Kreps, M., Krishnamurthy, M., Kroeger, R., Kroeger, W., Krokovny, P., Kronenbitter, B., Kroseberg, J., Kubo, T., Kuhr, T., Kukartsev, G., Kulasiri, R., Kulikov, A., Kumar, R., Kumar, S., Kumita, T., Kuniya, T., Kunze, M., Kuo, C. C., Kuo, T. -L., Kurashiro, H., Kurihara, E., Kurita, N., Kuroki, Y., Kurup, A., Kutter, P. E., Kuznetsova, N., Kvasnička, P., Kyberd, P., Kyeong, S. H., Lacker, H. M., Lae, C. K., Lamanna, E., Lamsa, J., Lanceri, L., Landi, L., Lang, M. I., Lange, D. J., Lange, J. S., Langenegger, U., Langer, M., Lankford, A. J., Lanni, F., Laplace, S., Latour, E., Lau, Y. P., Lavin, D. R., Layter, J., Lebbolo, H., LeClerc, C., Leddig, T., Leder, G., Diberder, F. Le, Lee, C. L., Lee, J., Lee, J. S., Lee, M. C., Lee, M. H., Lee, M. J., Lee, S. -J., Lee, S. E., Lee, S. H., Lee, Y. J., Lees, J. P., Legendre, M., Leitgab, M., Leitner, R., Leonardi, E., Leonidopoulos, C., Lepeltier, V., Leruste, Ph., Lesiak, T., Levi, M. E., Levy, S. L., Lewandowski, B., Lewczuk, M. J., Lewis, P., Li, H., Li, H. B., Li, S., Li, X., Li, Y., Gioi, L. Li, Libby, J., Lidbury, J., Lillard, V., Lim, C. L., Limosani, A., Lin, C. S., Lin, J. Y., Lin, S. W., Lin, Y. S., Lindquist, B., Lindsay, C., Lista, L., Liu, C., Liu, F., Liu, H., Liu, H. M., Liu, J., Liu, R., Liu, T., Liu, Y., Liu, Z. Q., Liventsev, D., Vetere, M. Lo, Locke, C. B., Lockman, W. S., Di Lodovico, F., Lombardo, V., London, G. W., Pegna, D. Lopes, Lopez, L., Lopez-March, N., Lory, J., LoSecco, J. M., Lou, X. C., Louvot, R., Lu, A., Lu, C., Lu, M., Lu, R. S., Lueck, T., Luitz, S., Lukin, P., Lund, P., Luppi, E., Lutz, A. M., Lutz, O., Lynch, G., Lynch, H. L., Lyon, A. J., Lyubinsky, V. R., MacFarlane, D. B., Mackay, C., MacNaughton, J., Macri, M. M., Madani, S., Mader, W. F., Majewski, S. A., Majumder, G., Makida, Y., Malaescu, B., Malaguti, R., Malclès, J., Mallik, U., Maly, E., Mamada, H., Manabe, A., Mancinelli, G., Mandelkern, M., Mandl, F., Manfredi, P. F., Mangeol, D. J. J., Manoni, E., Mao, Z. P., Margoni, M., Marker, C. E., Markey, G., Marks, J., Marlow, D., Marques, V., Marsiske, H., Martellotti, S., Martin, E. C., Martin, J. P., Martin, L., Martinez, A. J., Marzolla, M., Mass, A., Masuzawa, M., Mathieu, A., Matricon, P., Matsubara, T., Matsuda, T., Matsumoto, H., Matsumoto, S., Matsumoto, T., Matsuo, H., Mattison, T. S., Matvienko, D., Matyja, A., Mayer, B., Mazur, M. A., Mazzoni, M. A., McCulloch, M., McDonald, J., McFall, J. D., McGrath, P., McKemey, A. K., McKenna, J. A., Mclachlin, S. E., McMahon, S., McMahon, T. R., McOnie, S., Medvedeva, T., Melen, R., Mellado, B., Menges, W., Menke, S., Merchant, A. M., Merkel, J., Messner, R., Metcalfe, S., Metzler, S., Meyer, N. T., Meyer, T. I., Meyer, W. T., Michael, A. K., Michelon, G., Michizono, S., Micout, P., Miftakov, V., Mihalyi, A., Mikami, Y., Milanes, D. A., Milek, M., Mimashi, T., Minamora, J. S., Mindas, C., Minutoli, S., Mir, L. M., Mishra, K., Mitaroff, W., Miyake, H., Miyashita, T. S., Miyata, H., Miyazaki, Y., Moffitt, L. C., Mohapatra, A., Mohapatra, A. K., Mohapatra, D., Moll, A., Moloney, G. R., Mols, J. P., Mommsen, R. K., Monge, M. R., Monorchio, D., Moore, T. B., Moorhead, G. F., de Freitas, P. Mora, Morandin, M., Morgan, N., Morgan, S. E., Morganti, M., Morganti, S., Mori, S., Mori, T., Morii, M., Morris, J. P., Morsani, F., Morton, G. W., Moss, L. J., Mouly, J. P., Mount, R., Mueller, J., Müller-Pfefferkorn, R., Mugge, M., Muheim, F., Muir, A., Mullin, E., Munerato, M., Murakami, A., Murakami, T., Muramatsu, N., Musico, P., Nagai, I., Nagamine, T., Nagasaka, Y., Nagashima, Y., Nagayama, S., Nagel, M., Naisbit, M. T., Nakadaira, T., Nakahama, Y., Nakajima, M., Nakajima, T., Nakamura, I., Nakamura, T., Nakamura, T. T., Nakano, E., Nakayama, H., Nam, J. W., Narita, S., Narsky, I., Nash, J . 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. P., Padoan, C., Paick, K., Palka, H., Pan, B., Pan, Y., Vazquez, W. Panduro, Panetta, J., Panova, A. I., Panvini, R. S., Panzenböck, E., Paoloni, E., Paolucci, P., Pappagallo, M., Paramesvaran, S., Park, C. S., Park, C. W., Park, H., Park, H. K., Park, K. S., Park, W., Parry, R. J., Parslow, N., Passaggio, S., Pastore, F. C., Patel, P. M., Patrignani, C., Patteri, P., Pavel, T., Pavlovich, J., Payne, D. J., Peak, L. S., Peimer, D. R., Pelizaeus, M., Pellegrini, R., Pelliccioni, M., Peng, C. C., Peng, J. C., Peng, K. C., Peng, T., Penichot, Y., Pennazzi, S., Pennington, M. R., Penny, R. C., Penzkofer, A., Perazzo, A., Perez, A., Perl, M., Pernicka, M., Perroud, J. -P., Peruzzi, I. M., Pestotnik, R., Peters, K., Peters, M., Petersen, B. A., Petersen, T. C., Petigura, E., Petrak, S., Petrella, A., Petrič, M., Petzold, A., Pia, M. G., Piatenko, T., Piccolo, D., Piccolo, M., Piemontese, L., Piemontese, M., Pierini, M., Pierson, S., Pioppi, M., Piredda, G., Pivk, M., Plaszczynski, S., Polci, F., Pompili, A., Poropat, P., Posocco, M., Potter, C. T., Potter, R. J. L., Prasad, V., Prebys, E., Prencipe, E., Prendki, J., Prepost, R., Prest, M., Prim, M., Pripstein, M., Prudent, X., Pruvot, S., Puccio, E. M. T., Purohit, M. V., Qi, N. D., Quinn, H., Raaf, J., Rabberman, R., Raffaelli, F., Ragghianti, G., Rahatlou, S., Rahimi, A. M., Rahmat, R., Rakitin, A. Y., Randle-Conde, A., Rankin, P., Rashevskaya, I., Ratkovsky, S., Raven, G., Re, V., Reep, M., Regensburger, J. J., Reidy, J., Reif, R., Reisert, B., Renard, C., Renga, F., Ricciardi, S., Richman, J. D., Ritchie, J. L., Ritter, M., Rivetta, C., Rizzo, G., Roat, C., Robbe, P., Roberts, D. A., Robertson, A. I., Robutti, E., Rodier, S., Rodriguez, D. M., Rodriguez, J. L., Rodriguez, R., Roe, N. A., Röhrken, M., Roethel, W., Rolquin, J., Romanov, L., Romosan, A., Ronan, M. T., Rong, G., Ronga, F. J., Roos, L., Root, N., Rosen, M., Rosenberg, E. I., Rossi, A., Rostomyan, A., Rotondo, M., Roussot, E., Roy, J., Rozanska, M., Rozen, Y., Rubin, A. E., Ruddick, W. O., Ruland, A. M., Rybicki, K., Ryd, A., Ryu, S., Ryuko, J., Sabik, S., Sacco, R., Saeed, M. A., Tehrani, F. Safai, Sagawa, H., Sahoo, H., Sahu, S., Saigo, M., Saito, T., Saitoh, S., Sakai, K., Sakamoto, H., Sakaue, H., Saleem, M., Salnikov, A. A., Salvati, E., Salvatore, F., Samuel, A., Sanders, D. A., Sanders, P., Sandilya, S., Sandrelli, F., Sands, W., Sands, W. R., Sanpei, M., Santel, D., Santelj, L., Santoro, V., Santroni, A., Sanuki, T., Sarangi, T. R., Saremi, S., Sarti, A., Sasaki, T., Sasao, N., Satapathy, M., Sato, Nobuhiko, Sato, Noriaki, Sato, Y., Satoyama, N., Satpathy, A., Savinov, V., Savvas, N., Saxton, O. H., Sayeed, K., Schaffner, S. F., Schalk, T., Schenk, S., Schieck, J. 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. C., Simard, M., Simi, G., Simon, F., Simonetto, F., Sinev, N. B., Singh, H., Singh, J. B., Sinha, R., Sitt, S., Skovpen, Yu. I., Sloane, R. J., Smerkol, P., Smith, A. J. S., Smith, D., Smith, D. S., Smith, J. G., Smol, A., Snoek, H. L., Snyder, A., So, R. Y., Sobie, R. J., Soderstrom, E., Soha, A., Sohn, Y. S., Sokoloff, M. D., Sokolov, A., Solagna, P., Solovieva, E., Soni, N., Sonnek, P., Sordini, V., Spaan, B., Spanier, S. M., Spencer, E., Speziali, V., Spitznagel, M., Spradlin, P., Staengle, H., Stamen, R., Stanek, M., Stanič, S., Stark, J., Steder, M., Steininger, H., Steinke, M., Stelzer, J., Stevanato, E., Stocchi, A., Stock, R., Stoeck, H., Stoker, D. P., Stroili, R., Strom, D., Strother, P., Strube, J., Stugu, B., Stypula, J., Su, D., Suda, R., Sugahara, R., Sugi, A., Sugimura, T., Sugiyama, A., Suitoh, S., Sullivan, M. K., Sumihama, M., Sumiyoshi, T., Summers, D. J., Sun, L., Sun, S., Sundermann, J. E., Sung, H. F., Susaki, Y., Sutcliffe, P., Suzuki, A., Suzuki, J., Suzuki, J. I., Suzuki, K., Suzuki, S., Suzuki, S. Y., Swain, J. E., Swain, S. K., T'Jampens, S., Tabata, M., Tackmann, K., Tajima, H., Tajima, O., Takahashi, K., Takahashi, S., Takahashi, T., Takasaki, F., Takayama, T., Takita, M., Tamai, K., Tamponi, U., Tamura, N., Tan, N., Tan, P., Tanabe, K., Tanabe, T., Tanaka, H. A., Tanaka, J., Tanaka, M., Tanaka, S., Tanaka, Y., Tanida, K., Taniguchi, N., Taras, P., Tasneem, N., Tatishvili, G., Tatomi, T., Tawada, M., Taylor, F., Taylor, G. N., Taylor, G. P., Telnov, V. I., Teodorescu, L., Ter-Antonyan, R., Teramoto, Y., Teytelman, D., Thérin, G., Thiebaux, Ch., Thiessen, D., Thomas, E. W., Thompson, J. M., Thorne, F., Tian, X. C., Tibbetts, M., Tikhomirov, I., Tinslay, J. S., Tiozzo, G., Tisserand, V., Tocut, V., Toki, W. H., Tomassini, E. W., Tomoto, M., Tomura, T., Torassa, E., Torrence, E., Tosi, S., Touramanis, C., Toussaint, J. C., Tovey, S. N., Trapani, P. P., Treadwell, E., Triggiani, G., Trincaz-Duvoid, S., Trischuk, W., Troost, D., Trunov, A., Tsai, K. L., Tsai, Y. T., Tsujita, Y., Tsukada, K., Tsukamoto, T., Tuggle, J. M., Tumanov, A., Tung, Y. W., Turnbull, L., Turner, J., Turri, M., Uchida, K., Uchida, M., Uchida, Y., Ueki, M., Ueno, K., Ujiie, N., Ulmer, K. A., Unno, Y., Urquijo, P., Ushiroda, Y., Usov, Y., Usseglio, M., Usuki, Y., Uwer, U., Va'vra, J., Vahsen, S. E., Vaitsas, G., Valassi, A., Vallazza, E., Vallereau, A., Vanhoefer, P., van Hoek, W. C., Van Hulse, C., van Winkle, D., Varner, G., Varnes, E. W., Varvell, K. E., Vasileiadis, G., Velikzhanin, Y. S., Verderi, M., Versillé, S., Vervink, K., Viaud, B., Vidal, P. B., Villa, S., Villanueva-Perez, P., Vinograd, E. L., Vitale, L., Vitug, G. M., Voß, C., Voci, C., Voena, C., Volk, A., von Wimmersperg-Toeller, J. H., Vorobyev, V., Vossen, A., Vuagnin, G., Vuosalo, C. O., Wacker, K., Wagner, A. P., Wagner, D. L., Wagner, G., Wagner, M. N., Wagner, S. R., Wagoner, D. E., Walker, D., Walkowiak, W., Wallom, D., Wang, C. C., Wang, C. H., Wang, J., Wang, J. G., Wang, K., Wang, L., Wang, L. L., Wang, P., Wang, T. J., Wang, W. F., Wang, X. L., Wang, Y. F., Wappler, F. R., Watanabe, M., Watson, A. T., Watson, J. E., Watson, N. K., Watt, M., Weatherall, J. H., Weaver, M., Weber, T., Wedd, R., Wei, J. T., Weidemann, A. W., Weinstein, A. J. R., Wenzel, W. A., West, C. A., West, C. G., West, T. J., White, E., White, R. M., Wicht, J., Widhalm, L., Wiechczynski, J., Wienands, U., Wilden, L., Wilder, M., Williams, D. C., Williams, G., Williams, J. C., Williams, K. M., Williams, M. I., Willocq, S. Y., Wilson, J. R., Wilson, M. G., Wilson, R. J., Winklmeier, F., Winstrom, L. O., Winter, M. A., Wisniewski, W. J., Wittgen, M., Wittlin, J., Wittmer, W., Wixted, R., Woch, A., Wogsland, B. J., Wong, Q. K., Wray, B. C., Wren, A. C., Wright, D. M., Wu, C. H., Wu, J., Wu, S. L., Wulsin, H. W., Xella, S. M., Xie, Q. L., Xie, Y., Xu, Z. Z., Yèche, Ch., Yamada, Y., Yamaga, M., Yamaguchi, A., Yamaguchi, H., Yamaki, T., Yamamoto, H., Yamamoto, N., Yamamoto, R. K., Yamamoto, S., Yamanaka, T., Yamaoka, H., Yamaoka, J., Yamaoka, Y., Yamashita, Y., Yamauchi, M., Yan, D. S., Yan, Y., Yanai, H., Yanaka, S., Yang, H., Yang, R., Yang, S., Yarritu, A. K., Yashchenko, S., Yashima, J., Yasin, Z., Yasu, Y., Ye, S. W., Yeh, P., Yi, J. I., Yi, K., Yi, M., Yin, Z. W., Ying, J., Yocky, G., Yokoyama, K., Yokoyama, M., Yokoyama, T., Yoshida, K., Yoshida, M., Yoshimura, Y., Young, C. C., Yu, C. X., Yu, Z., Yuan, C. Z., Yuan, Y., Yumiceva, F. X., Yusa, Y., Yushkov, A. N., Yuta, H., Zacek, V., Zain, S. B., Zallo, A., Zambito, S., Zander, D., Zang, S. L., Zanin, D., Zaslavsky, B. G., Zeng, Q. L., Zghiche, A., Zhang, B., Zhang, J., Zhang, L., Zhang, L. M., Zhang, S. Q., Zhang, Z. P., Zhao, H. W., Zhao, M., Zhao, Z. G., Zheng, Y., Zheng, Y. H., Zheng, Z. P., Zhilich, V., Zhou, P., Zhu, R. Y., Zhu, Y. S., Zhu, Z. 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
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41. Search for heavy neutral leptons using tau lepton decays at B a B aR

Author

Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Fritsch, M, Koch, H, Cheaib, R, Hearty, C, Mattison, T, Mckenna, J, So, R, Blinov, V, Buzykaev, A, Druzhinin, V, Kozyrev, E, Kravchenko, E, Serednyakov, S, Skovpen, Y, Solodov, E, Todyshev, K, Lankford, A, Dey, B, Gary, J, Long, O, Eisner, A, Lockman, W, Panduro Vazquez, W, Chao, D, Cheng, C, Echenard, B, Flood, K, Hitlin, D, Li, Y, Lin, D, Middleton, S, Miyashita, T, Ongmongkolkul, P, Oyang, J, Porter, F, Rohrken, M, Meadows, B, Sokoloff, M, Smith, J, Wagner, S, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, I, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, B, Lacker, H, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, A, Arnaud, N, Davier, M, Le Diberder, F, Lutz, A, Wormser, G, Lange, D, Wright, D, Coleman, J, Hutchcroft, D, Payne, D, Touramanis, C, Bevan, A, Di Lodovico, F, Cowan, G, Banerjee, S, Davis, C, Denig, A, Gradl, W, Griessinger, K, Hafner, A, Schubert, K, Barlow, R, Lafferty, G, Cenci, R, Jawahery, A, Roberts, D, Cowan, R, Robertson, S, Seddon, R, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, D, De Nardo, G, Sciacca, C, Jessop, C, Losecco, J, Honscheid, K, Gaz, A, Margoni, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, G, Calderini, G, Chauveau, J, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, Forti, F, Giorgi, M, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, J, Zani, L, Smith, A, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Bunger, C, Dittrich, S, Grunberg, O, Leddig, T, Voss, C, Waldi, R, Adye, T, Wilson, F, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, M, Ebert, M, Field, R, Fulsom, B, Graham, M, Hast, C, Kim, P, Luitz, S, Macfarlane, D, Muller, D, Neal, H, Ratcliff, B, Roodman, A, Sullivan, M, Va'Vra, J, Wisniewski, W, Purohit, M, Wilson, J, Sekula, S, Ahmed, H, Tasneem, N, Bellis, M, Burchat, P, Puccio, E, Ernst, J, Gorodeisky, R, Guttman, N, Peimer, D, Soffer, A, Spanier, S, Ritchie, J, Izen, J, Lou, X, Bianchi, F, De Mori, F, Filippi, A, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, F, King, G, Kowalewski, R, Lueck, T, Miller, C, Nugent, I, Roney, J, Sobie, R, Gershon, T, Harrison, P, Latham, T, Wu, S, Lees J. P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., Brown D. N., Kolomensky Y. G., Fritsch M., Koch H., Cheaib R., Hearty C., Mattison T. S., McKenna J. A., So R. Y., Blinov V. E., Buzykaev A. R., Druzhinin V. P., Kozyrev E. A., Kravchenko E. A., Serednyakov S. I., Skovpen Y. I., Solodov E. P., Todyshev K. Y., Lankford A. J., Dey B., Gary J. W., Long O., Eisner A. M., Lockman W. S., Panduro Vazquez W., Chao D. S., Cheng C. H., Echenard B., Flood K. T., Hitlin D. G., Li Y., Lin D. X., Middleton S., Miyashita T. S., Ongmongkolkul P., Oyang J., Porter F. C., Rohrken M., Meadows B. T., Sokoloff M. D., Smith J. G., Wagner S. R., Bernard D., Verderi M., Bettoni D., Bozzi C., Calabrese R., Cibinetto G., Fioravanti E., Garzia I., Luppi E., Santoro V., Calcaterra A., De Sangro R., Finocchiaro G., Martellotti S., Patteri P., Peruzzi I. M., Piccolo M., Rotondo M., Zallo A., Passaggio S., Patrignani C., Shuve B. J., Lacker H. M., Bhuyan B., Mallik U., Chen C., Cochran J., Prell S., Gritsan A. V., Arnaud N., Davier M., Le Diberder F., Lutz A. M., Wormser G., Lange D. J., Wright D. M., Coleman J. P., Hutchcroft D. E., Payne D. J., Touramanis C., Bevan A. J., Di Lodovico F., Cowan G., Banerjee S., Davis C. L., Denig A. G., Gradl W., Griessinger K., Hafner A., Schubert K. R., Barlow R. J., Lafferty G. D., Cenci R., Jawahery A., Roberts D. A., Cowan R., Robertson S. H., Seddon R. M., Neri N., Palombo F., Cremaldi L., Godang R., Summers D. J., De Nardo G., Sciacca C., Jessop C. P., Losecco J. M., Honscheid K., Gaz A., Margoni M., Simi G., Simonetto F., Stroili R., Akar S., Ben-Haim E., Bomben M., Bonneaud G. R., Calderini G., Chauveau J., Marchiori G., Ocariz J., Biasini M., Manoni E., Rossi A., Batignani G., Bettarini S., Carpinelli M., Casarosa G., Chrzaszcz M., Forti F., Giorgi M. A., Lusiani A., Oberhof B., Paoloni E., Rama M., Rizzo G., Walsh J. J., Zani L., Smith A. J. S., Anulli F., Faccini R., Ferrarotto F., Ferroni F., Pilloni A., Bunger C., Dittrich S., Grunberg O., Leddig T., Voss C., Waldi R., Adye T., Wilson F. F., Emery S., Vasseur G., Aston D., Cartaro C., Convery M. R., Ebert M., Field R. C., Fulsom B. G., Graham M. T., Hast C., Kim P., Luitz S., MacFarlane D. B., Muller D. R., Neal H., Ratcliff B. N., Roodman A., Sullivan M. K., Va'vra J., Wisniewski W. J., Purohit M. V., Wilson J. R., Sekula S. J., Ahmed H., Tasneem N., Bellis M., Burchat P. R., Puccio E. M. T., Ernst J. A., Gorodeisky R., Guttman N., Peimer D. R., Soffer A., Spanier S. M., Ritchie J. L., Izen J. M., Lou X. C., Bianchi F., De Mori F., Filippi A., Lanceri L., Vitale L., Martinez-Vidal F., Oyanguren A., Albert J., Beaulieu A., Bernlochner F. U., King G. J., Kowalewski R., Lueck T., Miller C., Nugent I. M., Roney J. M., Sobie R. J., Gershon T. J., Harrison P. F., Latham T. E., Wu S. L., Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Fritsch, M, Koch, H, Cheaib, R, Hearty, C, Mattison, T, Mckenna, J, So, R, Blinov, V, Buzykaev, A, Druzhinin, V, Kozyrev, E, Kravchenko, E, Serednyakov, S, Skovpen, Y, Solodov, E, Todyshev, K, Lankford, A, Dey, B, Gary, J, Long, O, Eisner, A, Lockman, W, Panduro Vazquez, W, Chao, D, Cheng, C, Echenard, B, Flood, K, Hitlin, D, Li, Y, Lin, D, Middleton, S, Miyashita, T, Ongmongkolkul, P, Oyang, J, Porter, F, Rohrken, M, Meadows, B, Sokoloff, M, Smith, J, Wagner, S, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, I, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, B, Lacker, H, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, A, Arnaud, N, Davier, M, Le Diberder, F, Lutz, A, Wormser, G, Lange, D, Wright, D, Coleman, J, Hutchcroft, D, Payne, D, Touramanis, C, Bevan, A, Di Lodovico, F, Cowan, G, Banerjee, S, Davis, C, Denig, A, Gradl, W, Griessinger, K, Hafner, A, Schubert, K, Barlow, R, Lafferty, G, Cenci, R, Jawahery, A, Roberts, D, Cowan, R, Robertson, S, Seddon, R, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, D, De Nardo, G, Sciacca, C, Jessop, C, Losecco, J, Honscheid, K, Gaz, A, Margoni, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, G, Calderini, G, Chauveau, J, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, Forti, F, Giorgi, M, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, J, Zani, L, Smith, A, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Bunger, C, Dittrich, S, Grunberg, O, Leddig, T, Voss, C, Waldi, R, Adye, T, Wilson, F, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, M, Ebert, M, Field, R, Fulsom, B, Graham, M, Hast, C, Kim, P, Luitz, S, Macfarlane, D, Muller, D, Neal, H, Ratcliff, B, Roodman, A, Sullivan, M, Va'Vra, J, Wisniewski, W, Purohit, M, Wilson, J, Sekula, S, Ahmed, H, Tasneem, N, Bellis, M, Burchat, P, Puccio, E, Ernst, J, Gorodeisky, R, Guttman, N, Peimer, D, Soffer, A, Spanier, S, Ritchie, J, Izen, J, Lou, X, Bianchi, F, De Mori, F, Filippi, A, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, F, King, G, Kowalewski, R, Lueck, T, Miller, C, Nugent, I, Roney, J, Sobie, R, Gershon, T, Harrison, P, Latham, T, Wu, S, Lees J. P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., Brown D. N., Kolomensky Y. G., Fritsch M., Koch H., Cheaib R., Hearty C., Mattison T. S., McKenna J. A., So R. Y., Blinov V. E., Buzykaev A. R., Druzhinin V. P., Kozyrev E. A., Kravchenko E. A., Serednyakov S. I., Skovpen Y. I., Solodov E. P., Todyshev K. Y., Lankford A. J., Dey B., Gary J. W., Long O., Eisner A. M., Lockman W. S., Panduro Vazquez W., Chao D. S., Cheng C. H., Echenard B., Flood K. T., Hitlin D. G., Li Y., Lin D. X., Middleton S., Miyashita T. S., Ongmongkolkul P., Oyang J., Porter F. C., Rohrken M., Meadows B. T., Sokoloff M. D., Smith J. G., Wagner S. R., Bernard D., Verderi M., Bettoni D., Bozzi C., Calabrese R., Cibinetto G., Fioravanti E., Garzia I., Luppi E., Santoro V., Calcaterra A., De Sangro R., Finocchiaro G., Martellotti S., Patteri P., Peruzzi I. M., Piccolo M., Rotondo M., Zallo A., Passaggio S., Patrignani C., Shuve B. J., Lacker H. M., Bhuyan B., Mallik U., Chen C., Cochran J., Prell S., Gritsan A. V., Arnaud N., Davier M., Le Diberder F., Lutz A. M., Wormser G., Lange D. J., Wright D. M., Coleman J. P., Hutchcroft D. E., Payne D. J., Touramanis C., Bevan A. J., Di Lodovico F., Cowan G., Banerjee S., Davis C. L., Denig A. G., Gradl W., Griessinger K., Hafner A., Schubert K. R., Barlow R. J., Lafferty G. D., Cenci R., Jawahery A., Roberts D. A., Cowan R., Robertson S. H., Seddon R. M., Neri N., Palombo F., Cremaldi L., Godang R., Summers D. J., De Nardo G., Sciacca C., Jessop C. P., Losecco J. M., Honscheid K., Gaz A., Margoni M., Simi G., Simonetto F., Stroili R., Akar S., Ben-Haim E., Bomben M., Bonneaud G. R., Calderini G., Chauveau J., Marchiori G., Ocariz J., Biasini M., Manoni E., Rossi A., Batignani G., Bettarini S., Carpinelli M., Casarosa G., Chrzaszcz M., Forti F., Giorgi M. A., Lusiani A., Oberhof B., Paoloni E., Rama M., Rizzo G., Walsh J. J., Zani L., Smith A. J. S., Anulli F., Faccini R., Ferrarotto F., Ferroni F., Pilloni A., Bunger C., Dittrich S., Grunberg O., Leddig T., Voss C., Waldi R., Adye T., Wilson F. F., Emery S., Vasseur G., Aston D., Cartaro C., Convery M. R., Ebert M., Field R. C., Fulsom B. G., Graham M. T., Hast C., Kim P., Luitz S., MacFarlane D. B., Muller D. R., Neal H., Ratcliff B. N., Roodman A., Sullivan M. K., Va'vra J., Wisniewski W. J., Purohit M. V., Wilson J. R., Sekula S. J., Ahmed H., Tasneem N., Bellis M., Burchat P. R., Puccio E. M. T., Ernst J. A., Gorodeisky R., Guttman N., Peimer D. R., Soffer A., Spanier S. M., Ritchie J. L., Izen J. M., Lou X. C., Bianchi F., De Mori F., Filippi A., Lanceri L., Vitale L., Martinez-Vidal F., Oyanguren A., Albert J., Beaulieu A., Bernlochner F. U., King G. J., Kowalewski R., Lueck T., Miller C., Nugent I. M., Roney J. M., Sobie R. J., Gershon T. J., Harrison P. F., Latham T. E., and Wu S. L.

Abstract

This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model tau neutrino with a mixing strength of jU tau 4j2, corresponding to the absolute square of the extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from the BABAR experiment, with a total integrated luminosity of 424 fb-1, are analyzed using a kinematic approach that makes no assumptions on the model behind the origins of the HNL, its lifetime or decay modes. No significant signal is found. Upper limits on jU tau 4j2 at the 95% confidence level, depend on the HNL mass hypothesis and vary from 2.31 x 10-2 to 5.04 x 10-6 (with all uncertainties considered), across the mass range 100 < m4 < 1300 MeV/c2; the more stringent limits being placed at higher masses.

Published
2023

42. First Observation of CP Violation in B¯0→DCP(*)h0 Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

Author

Abdesselam, A, Adachi, I, Adametz, A, Adye, T, Ahmed, H, Aihara, H, Akar, S, Alam, MS, Albert, J, Al Said, S, Andreassen, R, Angelini, C, Anulli, F, Arinstein, K, Arnaud, N, Asner, DM, Aston, D, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, AM, Band, HR, Banerjee, Sw, Barberio, E, Bard, DJ, Barlow, RJ, Batignani, G, Beaulieu, A, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bloom, PC, Bobrov, A, Bomben, M, Bondar, A, Bonneaud, GR, Bonvicini, G, Bozek, A, Bozzi, C, Bračko, M, Briand, H, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Červenkov, D, Chang, P, Chao, DS, Chauveau, J, Cheaib, R, Chekelian, V, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Chobanova, V, Choi, HHF, Choi, S-K, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Contri, R, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Dalseno, J, Dasu, S, Davier, M, Davis, CL, De Mori, F, De Nardo, G, and Denig, AG

Subjects
BaBar Collaboration, Belle Collaboration, hep-ex, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(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)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{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 B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015

43. First Observation of CP Violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data.

Author

Abdesselam, A, Adachi, I, Adametz, A, Adye, T, Ahmed, H, Aihara, H, Akar, S, Alam, MS, Albert, J, Al Said, S, Andreassen, R, Angelini, C, Anulli, F, Arinstein, K, Arnaud, N, Asner, DM, Aston, D, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, AM, Band, HR, Banerjee, Sw, Barberio, E, Bard, DJ, Barlow, RJ, Batignani, G, Beaulieu, A, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bloom, PC, Bobrov, A, Bomben, M, Bondar, A, Bonneaud, GR, Bonvicini, G, Bozek, A, Bozzi, C, Bračko, M, Briand, H, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Červenkov, D, Chang, P, Chao, DS, Chauveau, J, Cheaib, R, Chekelian, V, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Chobanova, V, Choi, HHF, Choi, S-K, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Contri, R, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Dalseno, J, Dasu, S, Davier, M, Davis, CL, De Mori, F, De Nardo, G, and Denig, AG

Subjects
BaBar Collaboration, Belle Collaboration, hep-ex, General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(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)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{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 B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015

44. 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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45. 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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46. 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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47. Production rate measurement of Tritium and other cosmogenic isotopes in Germanium with CDMSlite

Author

Agnese, R., Aralis, T., Aramaki, T., Arnquist, I.J., Azadbakht, E., Baker, W., Banik, S., Barker, D., Bauer, D.A., Binder, T., Bowles, M.A., Brink, P.L., Bunker, R., Cabrera, B., Calkins, R., Cartaro, C., Cerdeño, D.G., Chang, Y.-Y., Cooley, J., Cornell, B., Cushman, P., Doughty, T., Fascione, E., Figueroa-Feliciano, E., Fink, C.W., Fritts, M., Gerbier, G., Germond, R., Ghaith, M., Golwala, S.R., Harris, H.R., Hong, Z., Hoppe, E.W., Hsu, L., Huber, M.E., Iyer, V., Jardin, D., Jastram, A., Jena, C., Kelsey, M.H., Kennedy, A., Kubik, A., Kurinsky, N.A., Lawrence, R.E., Loer, B., Lopez Asamar, E., Lukens, P., MacDonell, D., Mahapatra, R., Mandic, V., Mast, N., Miller, E., Mirabolfathi, N., Mohanty, B., Morales Mendoza, J.D., Nelson, J., Orrell, J.L., Oser, S.M., Page, W.A., Partridge, R., Pepin, M., Ponce, F., Poudel, S., Pyle, M., Qiu, H., Rau, W., Reisetter, A., Ren, R., Reynolds, T., Roberts, A., Robinson, A.E., Rogers, H.E., Saab, T., Sadoulet, B., Sander, J., Scarff, A., Schnee, R.W., Scorza, S., Senapati, K., Serfass, B., Speller, D., Stein, M., Street, J., Tanaka, H.A., Toback, D., Underwood, R., Villano, A.N., von Krosigk, B., Watkins, S.L., Wilson, J.S., Wilson, M.J., Winchell, J., Wright, D.H., Yellin, S., Young, B.A., Zhang, X., and Zhao, X.

Published
2019
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48. 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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49. 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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50. 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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