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152 results on '"C. Bemporad"'

1. The design of the MEG II experiment

Author

A. M. Baldini, E. Baracchini, C. Bemporad, F. Berg, M. Biasotti, G. Boca, P. W. Cattaneo, G. Cavoto, F. Cei, M. Chiappini, G. Chiarello, C. Chiri, G. Cocciolo, A. Corvaglia, A. de Bari, M. De Gerone, A. D’Onofrio, M. Francesconi, Y. Fujii, L. Galli, F. Gatti, F. Grancagnolo, M. Grassi, D. N. Grigoriev, M. Hildebrandt, Z. Hodge, K. Ieki, F. Ignatov, R. Iwai, T. Iwamoto, D. Kaneko, K. Kasami, P.-R. Kettle, B. I. Khazin, N. Khomutov, A. Korenchenko, N. Kravchuk, T. Libeiro, M. Maki, N. Matsuzawa, S. Mihara, M. Milgie, W. Molzon, Toshinori Mori, F. Morsani, A. Mtchedilishvili, M. Nakao, S. Nakaura, D. Nicolò, H. Nishiguchi, M. Nishimura, S. Ogawa, W. Ootani, M. Panareo, A. Papa, A. Pepino, G. Piredda, A. Popov, F. Raffaelli, F. Renga, E. Ripiccini, S. Ritt, M. Rossella, G. Rutar, R. Sawada, G. Signorelli, M. Simonetta, G. F. Tassielli, Y. Uchiyama, M. Usami, M. Venturini, C. Voena, K. Yoshida, Yu. V. Yudin, and Y. Zhang

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract The MEG experiment, designed to search for the $${\mu ^+ \rightarrow \hbox {e}^+ \gamma }$$ μ+→e+γ decay, completed data-taking in 2013 reaching a sensitivity level of $${5.3\times 10^{-13}}$$ 5.3×10-13 for the branching ratio. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of $$6\times 10^{-14}$$ 6×10-14 , a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance.

Published
2018
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2. Real-Time Particle Identification in Liquid Xenon

Author

M. Francesconi, A. M. Baldini, G. Signorelli, Donato Nicolo, Luca Galli, T. Iwamoto, M. Chiappini, Marco Grassi, Angela Papa, Fabio Morsani, Ryu Sawada, Fabrizio Cei, and C. Bemporad

Subjects
Contamination, Detectors, Liquids, Mesons, Shape, Wires, Xenon, Physics, Nuclear and High Energy Physics, Meson, Firmware, Detector, chemistry.chemical_element, computer.software_genre, Particle identification, Computational physics, Nuclear Energy and Engineering, chemistry, Gate array, Particle, Electrical and Electronic Engineering, Field-programmable gate array, computer
Abstract

We present a field-programmable gate array (FPGA)-based technique for the on-line identification of highly ionizing particles in a liquid xenon (LXe) detector. The method was developed and successfully exploited to select $\alpha $ particles emitted by 241Am sources submerged in LXe in an overwhelming, mostly beam-related, $\gamma $ -ray background. After revising the main features of xenon and other liquid noble gases as ultra-violet (UV) scintillating media, we describe the algorithm idea and its firmware implementation. We then present the results in terms of efficiency and background suppression for the real-time $\alpha $ -particle tagging and the limits of the MEG trigger configuration. Finally, we show that in MEG II we are going to overcome the main issues and further improve the performances.

Published
2021
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3. The design of the MEG II experiment: MEG II Collaboration

Author

G. Cavoto, Stefan Ritt, P. W. Cattaneo, A. D’Onofrio, F. Morsani, Yu.V. Yudin, C. Voena, Masatoshi Maki, K. Ieki, S. Nakaura, Flavio Gatti, T. Libeiro, A. S. Korenchenko, F. Berg, Marco Francesconi, Ryu Sawada, G. F. Tassielli, A. Mtchedilishvili, F. Ignatov, D. Nicolò, C. Bemporad, G. Chiarello, Fabrizio Cei, A. Papa, D. N. Grigoriev, G. Signorelli, Nobuo Matsuzawa, M. Usami, Marco Grassi, Toshinori Mori, M. Simonetta, Andrey Popov, L. Galli, M. Nakao, P.-R. Kettle, A. Pepino, N. P. Kravchuk, Hajime Nishiguchi, A. de Bari, B.I. Khazin, Yusuke Uchiyama, F. Raffaelli, T. Iwamoto, W. R. Molzon, N. V. Khomutov, E. Baracchini, Satoshi Mihara, M. Panareo, D. Kaneko, Y. Zhang, S. Ogawa, A. Corvaglia, Kayo Yoshida, Malte Hildebrandt, G. Piredda, A. M. Baldini, M. Milgie, Wataru Ootani, M. De Gerone, C. Chiri, M. Rossella, Z. Hodge, R. Iwai, Yuki Fujii, Katsuyu Kasami, M. Venturini, M. Nishimura, Gianluigi Boca, F. Grancagnolo, F. Renga, Michele Biasotti, M. Chiappini, G. Rutar, E. Ripiccini, G. Cocciolo, Baldini, A. M., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Cocciolo, G., Corvaglia, A., de Bari, A., De Gerone, M., D’Onofrio, A., Francesconi, M., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Grigoriev, D. N., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwai, R., Iwamoto, T., Kaneko, D., Kasami, K., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Libeiro, T., Maki, M., Matsuzawa, N., Mihara, S., Milgie, M., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Nakao, M., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Signorelli, G., Simonetta, M., Tassielli, G. F., Uchiyama, Y., Usami, M., Venturini, M., Voena, C., Yoshida, K., Yudin, Yu. V., and Zhang, Y.

Subjects
SUSY SO(10), Physics and Astronomy (miscellaneous), High Energy Pysics, muons, charged lepton flavor violation, particles detectors, LEPTON-FLAVOR VIOLATION, SUPERSYMMETRIC STANDARD MODEL, SCINTILLATION-COUNTERS, PLASTIC SCINTILLATOR, UNIFIED THEORIES, TIME RESOLUTION, NEUTRINO-MASS, HIGGS-BOSON, 50 PS, 01 natural sciences, Muon Decay Violating Decay, Nuclear physics, 0103 physical sciences, Sensitivity (control systems), Engineering (miscellaneous), 010306 general physics, Physics, 010308 nuclear & particles physics, Branching fraction, Detector, Gamma ray, Upgrade, Order of magnitude
Abstract

The MEG experiment, designed to search for the μ+→e+γ decay, completed data-taking in 2013 reaching a sensitivity level of 5.3×10^−13 for the branching ratio. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of 6×10^−14, a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance

Published
2018

4. An FPGA-based trigger for the phase II of the MEG experiment

Author

Fabio Morsani, Donato Nicolo, Fabrizio Cei, A. M. Baldini, M. Grassi, C. Bemporad, Marco Venturini, Stefan Ritt, and L. Galli

Subjects
Digital electronics, Physics, Nuclear and High Energy Physics, Focus (computing), 010308 nuclear & particles physics, business.industry, Event (computing), Digital circuits, Integrated electronics, Pattern transfer techniques, Instrumentation, Detector, 01 natural sciences, Signal, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Data acquisition, 0103 physical sciences, Instrumentation (computer programming), Field-programmable gate array, business, Computer hardware
Abstract

For the phase II of MEG, we are going to develop a combined trigger and DAQ system. Here we focus on the former side, which operates an on-line reconstruction of detector signals and event selection within 450 μs from event occurrence. Trigger concentrator boards (TCB) are under development to gather data from different crates, each connected to a set of detector channels, to accomplish higher-level algorithms to issue a trigger in the case of a candidate signal event. We describe the major features of the new system, in comparison with phase I, as well as its performances in terms of selection efficiency and background rejection.

Published
2016
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5. A dedicated calibration tool for the MEG and MEG II positron spectrometer

Author

Giada Rutar, P. W. Cattaneo, Fabrizio Cei, Luca Galli, P.R. Kettle, C. Bemporad, and Angela Papa

Subjects
Physics, Positron beam, Nuclear and High Energy Physics, Muon, Spectrometer, 010308 nuclear & particles physics, Branching fraction, Mott scattering, Calibration methods, Instrumentation, 01 natural sciences, Nuclear physics, Positron, 0103 physical sciences, Calibration, Physics::Accelerator Physics, High Energy Physics::Experiment, Monochromatic color, 010306 general physics, Lepton
Abstract

The MEG experiment has set the latest limit of 5.7 × 10 − 13 (90 % C.L.) on the branching ratio of the charged lepton flavor violating decay μ + → e + γ , making use of the most intense continuous surface muon beam in the world at the Paul Scherrer Institut (PSI), Villigen, Switzerland. High resolutions in terms of energy, timing and relative opening angle are needed in the detection of the e + and gamma, requiring careful calibration and monitoring of the experimental apparatus. A dedicated calibration method involving Mott scattering of a monochromatic positron beam at energies close to the MEG signal energy is presented.

Published
2016
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6. Search for diffuse neutrino flux from astrophysical sources with MACRO

Author

Ioannis Katsavounidis, R. Caruso, D. Levin, F. Guarino, G. Sirri, P. Pistilli, B. C. Choudhary, R. Pazzi, S. Petrera, M. Giorgini, D. G. Michael, Maurizio Spurio, A. Surdo, C. W. Walter, F. Cafagna, M. De Vincenzi, E. Kearns, Hyun-Chul Kim, I. De Mitri, F.J. Ronga, C. Satriano, Maximiliano Sioli, C. R. Bower, L. R. Sulak, P. Serra, G. Auriemma, Gregory Tarle, M. Brigida, J. Reynoldson, Teresa Montaruli, C. De Marzo, M. N. Mazziotta, V. Togo, A. Rainò, C. Forti, M. J. Longo, S. Cecchini, Np Longley, R. Steinberg, A. Rrhioua, G. Giacomelli, C. Bemporad, J. A. Musser, C. E. Lane, C. Favuzzi, C. W. Peck, Roberto Bellotti, M. Vakili, D. Martello, L. Patrizii, V. Popa, Yvonne Becherini, A. Di Credico, D. Campana, Fabrizio Cei, R. Antolini, S. Kyriazopoulou, R.M. Heinz, Alec Habig, F. Maaroufi, G. de Cataldo, Donato Nicolo, G. Osteria, G. Battistoni, G. Mancarella, Kate Scholberg, R. C. Webb, M. Ambrosio, E. Lamanna, G. C. Barbarino, C. Bloise, P. Fusco, D. Bakari, R. Nolty, A. Marzari-Chiesa, M. Spinetti, Marco Monteno, Andrea Carlo Marini, L. Perrone, Annarita Margiotta, Eugenio Scapparone, G. Giannini, Barry C. Barish, N. Giglietto, H. Dekhissi, Severino Angelo Maria Bussino, Mario Sitta, C. Gustavino, C. Orth, O. Erriquez, G. Mandrioli, M. Cozzi, A. A. Grillo, S. Coutu, M. Calicchio, Halina Bilokon, Erik Katsavounidis, S. L. Mufson, V. Chiarella, P. Monacelli, M. Carboni, J. L. Stone, F. Loparco, Paolo Lipari, M. Grassi, J. Derkaoui, P. Spinelli, Kael Hanson, P. Bernardini, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, E. Iarocci, Ambrosio M., Antolini R., Auriemma G., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Becherini Y., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Caruso R., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., Cozzi M., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., Derkaoui J., de Vincenzi M., di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Orth C., Osteria G., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Rrhioua A., Satriano C., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Walter C.W., Webb R., Ambrosio, M, Antolini, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Caruso, R, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., M., Ambrosio, Bernardini, Paolo, Martello, Daniele, DE MITRI, Ivan, Perrone, Lorenzo, Mancarella, Giovanni, Macro, Collaboration, R., Antolini, G., Auriemma, D., Bakari, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, C., Bloise, C., Bower, M., Brigida, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, R., Caruso, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, S., Coutu, M., Cozzi, G. D., Cataldo, H., Dekhissi, C. D., Marzo, I. D., Mitri, J., Derkaoui, M. D., Vincenzi, A. D., Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, Guarino, Fausto, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, P., Pistilli, V., Popa, A., Raino, J., Reynoldson, F., Ronga, A., Rrhioua, C., Satriano, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Sioli, G., Sirri, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, M., Vakili, C. W., Walter, and R., Webb

Subjects
HIGH-ENERGY NEUTRINOS, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, grbs, FOS: Physical sciences, PROPAGATION, Astrophysics, agns, LIMIT, neutrino, AGN, Neutrino oscillation, DETECTOR, Astroparticle physics, Physics, Astrophysics (astro-ph), High Energy Physics::Phenomenology, Astronomy and Astrophysics, GRB, Solar neutrino problem, Neutrino, AGNs, GRBs, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy
Abstract

Many galactic and extragalactic astrophysical sources are currently considered promising candidates as high energy neutrino emitters. Astrophysical neutrinos can be detected as upward-going muons produced in charged-current interactions with the medium surrounding the detector. The expected neutrino fluxes from various models start to dominate on the atmospheric neutrino background at neutrino energies above some tens of TeV. We present the results of a search for an excess of high energy upward-going muons among the sample of data collected by MACRO during ~5.8 years of effective running time. No significant evidence for this signal was found. As a consequence, an upper limit on the flux of upward-going muons from high-energy neutrinos was set at the level of 1.7 10^(-14) cm^(-2) s^(-1) sr^(-1). The corresponding upper limit for the diffuse neutrino flux was evaluated assuming a neutrino power law spectrum. Our result was compared with theoretical predictions and upper limits from other experiments., 19 pages, 8 figures, 2 tables

Published
2003
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7. Muon polarization in the MEG experiment: predictions and measurements

Author

A. M. Baldini, Akira Yamamoto, Z. You, M. De Gerone, W. R. Molzon, Malte Hildebrandt, Z. Hodge, B.I. Khazin, Marco Grassi, G. Chiarello, D. N. Grigoriev, Yu Bao, A. Mtchedlishvili, K. Ieki, S. Nakaura, A. Pepino, G. F. Tassielli, G. Cavoto, A. de Bari, T. I. Kang, P. W. Cattaneo, Hajime Nishiguchi, F. Berg, F. Renga, E. Baracchini, Flavio Gatti, A. Papa, Yuki Fujii, Yusuke Uchiyama, T. Haruyama, S. Ogawa, T. Iwamoto, M. Rossella, Andrey Popov, Michele Biasotti, G. M. A. Lim, L. Galli, S. Dussoni, A. S. Korenchenko, G. Pizzigoni, P.-R. Kettle, G. Rutar, E. Ripiccini, F. Grancagnolo, A. D’Onofrio, N. V. Khomutov, Wataru Ootani, Stefan Ritt, N. P. Kravchuk, D. Nicolò, C. Voena, A. Graziosi, F. Ignatov, K. Yoshida, M. Venturini, D. Kaneko, Ryu Sawada, F. Tenchini, G. Piredda, Satoshi Mihara, G. Signorelli, Yu.V. Yudin, M. Nishimura, F. Sergiampietri, Gianluigi Boca, Fabrizio Cei, C. Chiri, M. Panareo, C. Bemporad, and Toshinori Mori

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Order (ring theory), 7. Clean energy, 01 natural sciences, Standard Model, Massless particle, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Production (computer science), Neutrino, 010306 general physics, Engineering (miscellaneous), Energy (signal processing), Lepton
Abstract

The MEG experiment makes use of one of the world's most intense low energy muon beams, in order to search for the lepton flavour violating process $\mu^{+} \rightarrow {\rm e}^{+} \gamma$. We determined the residual beam polarization at the thin stopping target, by measuring the asymmetry of the angular distribution of Michel decay positrons as a function of energy. The initial muon beam polarization at the production is predicted to be $P_{\mu} = -1$ by the Standard Model (SM) with massless neutrinos. We estimated our residual muon polarization to be $P_{\mu} = -0.85 \pm 0.03 ~ {\rm (stat)} ~ { }^{+ 0.04}_{-0.05} ~ {\rm (syst)}$ at the stopping target, which is consistent with the SM predictions when the depolarizing effects occurring during the muon production, propagation and moderation in the target are taken into account. The knowledge of beam polarization is of fundamental importance in order to model the background of our ${\megsign}$ search induced by the muon radiative decay: $\mu^{+} \rightarrow {\rm e}^{+} \bar{\nu}_{\mu} \nu_{\rm e} \gamma$.

Published
2016
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8. A liquid hydrogen target for the calibration of the MEG and MEG II liquid xenon calorimeter

Author

Luca Galli, Fabrizio Cei, G. Gallucci, Donato Nicolo, Angela Papa, A. M. Baldini, Giovanni Signorelli, Marco Grassi, C. Bemporad, F. Sergiampietri, and M. Venturini

Subjects
Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), business.industry, Instrumentation, chemistry.chemical_element, Hydrogen target, 01 natural sciences, Nuclear magnetic resonance, Xenon, Optics, chemistry, Calibration, Liquid xenon, 0103 physical sciences, 010306 general physics, business, Liquid hydrogen
Abstract

We designed, built and operated a liquid hydrogen target for the calibration of the liquid xenon calorimeter of the MEG experiment. The target was used throughout the entire data taking period, from 2008 to 2013 and it is being refurbished and partly re-designed to be integrated and used in the MEG-II experiment.

Published
2016

9. A 16 channel frequency-domain-modulation readout system with custom superconducting LC filters for the SWIPE instrument of the balloon-borne LSPE experiment

Author

Michele Biasotti, Flavio Gatti, V. Ceriale, Luca Galli, M. Venturini, Donato Nicolo, Fabrizio Cei, D. Corsini, A. M. Baldini, M. Incagli, C. Bemporad, G. Gallucci, Marco Grassi, D. Vaccaro, F. Fontanelli, F. Spinella, and Giovanni Signorelli

Subjects
CMB, Spider-web bolometers, Superconducting resonant circuits, TES, Instrumentation, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Cosmic microwave background, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, 010309 optics, Optics, law, 0103 physical sciences, 010303 astronomy & astrophysics, Physics, business.industry, Linear polarization, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, SwIPe, Polarization (waves), Frequency domain, Measuring instrument, business, Microwave
Abstract

We present the design, implementation and first tests of the superconducting LC filters for the frequency domain readout of spiderweb TES bolometers of the SWIPE experiment on the balloon-borne LSPE mission which aims at measuring the linear polarization of the Cosmic Microwave Background at large angular scales to find the imprint of inflation on the B-mode CMB polarization. LC filters are designed, produced and tested at the INFN sections of Pisa and Genoa where thin film deposition and cryogenic test facilities are present, and where also the TES spiderweb bolometers are being produced.

Published
2016

10. Calibration and monitoring of the MEG experiment by a proton beam from a Cockcroft–Walton accelerator

Author

D.N. Grigoriev, M. Rossella, P.-R. Kettle, Luca Galli, A. M. Baldini, Marco Grassi, Flavio Gatti, A. de Bari, Tomiyoshi Haruyama, R. Pazzi, J. Adam, Stefan Ritt, N. P. Kravchuk, M. Panareo, W. R. Molzon, H. Natori, M. Corbo, Donato Nicolo, G. Gallucci, E. Baracchini, D. Mzavia, Fedor Ignatov, Satoshi Mihara, Hajime Nishiguchi, Gianluigi Boca, Tadayoshi Doke, T. Iwamoto, P. W. Cattaneo, M. De Gerone, C. Topchyan, C. Voena, B. Golden, K. Fratini, J. Egger, X. Bai, A. Maki, Malte Hildebrandt, Yu.V. Yudin, N. Curalli, Angela Papa, Yasuhiro Nishimura, C. Cerri, O. Kiselev, A. S. Korenchenko, Wataru Ootani, R. Valle, B.I. Khazin, Akira Yamamoto, Ryu Sawada, Fabrizio Cei, C. Bemporad, F. Renga, A.S. Popov, Giovanni Signorelli, F. Sergiampietri, Yuki Fujii, G. Cavoto, F. Tenchini, G. Piredda, D. Zanello, F. Xiao, Takehiko Mori, Yusuke Uchiyama, and S. Dussoni

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Muon, Spectrometer, Proton, Branching fraction, Particle accelerator, law.invention, Calorimeter, γrays, Beam monitoring, Calibration, CockcroftWalton accelerator, Instrumentation, Nuclear physics, law, Nucleon
Abstract

The MEG experiment at PSI searches for the decay μ → e γ at a level of ≈ 10 − 13 on the branching ratio BR ( μ → e γ / μ → tot ), well beyond the present experimental limit ( BR ≤ 1.2 × 10 − 11 ) and is sensitive to the predictions of SUSY-GUT theories. To reach this goal the experiment uses one of the most intense continuous surface muon beams available ( ≈ 10 8 μ / s ) and relies on advanced technology (LXe calorimetry, a gradient-field superconducting spectrometer as well as flexible and powerful trigger and acquisition systems). In order to maintain the highest possible energy, time and spatial resolutions for such detector, frequent calibration and monitoring, using a Cockcroft–Walton proton accelerator, are required. The proton beam is brought to the centre of MEG by a special bellows insertion system and travels in a direction opposite to the one of the normal μ ‐ beam . Protons interact with a lithium tetraborate (Li2B4O7) nuclear target and produce one γ (17.6 MeV) from the reaction Li ( p , γ ) 3 7 Be 4 8 or two coincident γ s (11.67 and 4.4 MeV) from the reaction B ( p , γ 1 ) 5 11 C ⁎ 6 12 . The 17.6 MeV γ is used for calibrating and monitoring the LXe calorimeter ( σ E γ / E γ = 3.85 ± 0.15 % at 17.6 MeV) while the coincident 11.67 and 4.4 MeV γ s are used to measure the relative timing of the calorimeter and the spectrometer timing counters ( σ Δ t = 0.450 ± 0.015 ns ).

Published
2011
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11. A limit for the decay from the MEG experiment

Author

E. Baracchini, Stefan Ritt, J. Egger, N.P. Kravchuk, F. Xiao, M. Hildebrandt, H. Natori, R. Pazzi, C. Bemporad, Yusuke Uchiyama, A. M. Baldini, G. Piredda, S. Yamada, B. I. Khazin, P.-R. Kettle, Y. Nishimura, G. Gallucci, Y. Hisamatsu, A. Korenchenko, D.N. Grigoriev, A. de Bari, Tomiyoshi Haruyama, Flavio Gatti, M. Panareo, Roberto Di Nardo, F. Ignatov, C. Topchyan, S. Dussoni, V. Tumakov, Satoshi Mihara, M. De Gerone, J. Adam, Hajime Nishiguchi, G. Cecchet, Martin Schneebeli, O. Kiselev, S. Suzuki, C. Cerri, D. Kaneko, R. Valle, G. Cavoto, Ryu Sawada, B. Golden, D. Zanello, G. Boca, Fabrizio Cei, P. W. Cattaneo, W. R. Molzon, C. Voena, T. Iwamoto, L. Galli, T. Doke, A. Barchiesi, A.S. Popov, Angela Papa, D. Mzavia, F. Sergiampietri, Wataru Ootani, A. Maki, Giovanni Signorelli, X. Bai, S. Yamashita, Yu.V. Yudin, M. Grassi, Akira Yamamoto, Toshinori Mori, Donato Nicolo, F. Renga, and Massimo Rossella

Subjects
Superconductivity, Physics, Nuclear and High Energy Physics, Photon, Spectrometer, Branching fraction, Physics::Medical Physics, Analytical chemistry, chemistry.chemical_element, Calorimeter, Nuclear physics, Positron, Xenon, chemistry, High Energy Physics::Experiment, Limit (mathematics), Lepton flavour violation, Muon decay
Abstract

A search for the decay μ + → e + γ , performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR ( μ + → e + γ ) ⩽ 2.8 × 10 − 11 (90% C.L.). This corresponds to the measurement of positrons and photons from ∼ 10 14 stopped μ + -decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector.

Published
2010
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12. Measurements of atmospheric muon neutrino oscillations, global analysis of the data collected with MACRO detector

Author

Giuseppe Osteria, U. Denni, Annarita Margiotta, C. Bloise, P. Fusco, M. Spinetti, G. de Cataldo, Andrea Carlo Marini, D. Bakari, Maximiliano Sioli, C. E. Lane, V. Chiarella, V. Togo, P. Spinelli, Kael Hanson, R. Pazzi, C. Satriano, M. N. Mazziotta, C. W. Peck, J. Derkauoi, M. Giorgini, Gregory Tarle, Mario Sitta, C. Gustavino, C. W. Walter, E. Kearns, D. Levin, P. Monacelli, E. Iarocci, D. G. Michael, A. Mengucci, G. Battistoni, G. Mancarella, G. C. Barbarino, Maurizio Spurio, S. Coutu, D. Cosson, R.M. Heinz, J. Reynoldson, Teresa Montaruli, C. Forti, Frederic Jean Ronga, M. Grassi, G. Giannini, E. Lamanna, R. Nolty, B. C. Choudhary, M. De Vincenzi, G. Giacomelli, Shahid Manzoor, Roberto Bellotti, S P Mikheyev, A. Rainò, N. Giglietto, R. Steinberg, J. L. Stone, F. Loparco, Alec Habig, M. Vakili, C. Bemporad, F. Maaroufi, F. Guarino, G. Mandrioli, Halina Bilokon, Paolo Lipari, A. Frani, V. Popa, Hyun-Chul Kim, C. Orth, S. L. Mufson, M. Brigida, S. Petrera, R. Antolini, Donato Nicolo, L. Patrizii, A. A. Grillo, M. Ambrosio, M. J. Longo, A. Marzari-Chiesa, Marco Monteno, Yvonne Becherini, Fabrizio Cei, D. Martello, Ioannis Katsavounidis, S. Cecchini, C. Favuzzi, F. Cafagna, A. Di Credico, S. Kyriazopoulou, R. C. Webb, I. De Mitri, C. R. Bower, C. De Marzo, J. A. Musser, L. Perrone, H. Dekhissi, Kate Scholberg, P. Bernardini, M. Carboni, A. Surdo, D. Campana, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, B. C. Barish, E. Katsavounidis, L. R. Sulak, Macro, Collaboration, Guarino, Fausto, Barbarino, Giancarlo, M., Ambrosio, R., Antolini, D., Bakari, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, C., Bloise, C., Bower, M., Brigida, F., Cafagna, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, D., Cosson, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, U., Denni, J., Derkauoi, M., De Vincenzi, A., Di Credico, C., Favuzzi, C., Forti, A., Frani, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, F., Guarino, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, M. J., Longo, F., Loparco, F., Maaroui, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, A., Mengucci, D. G., Michael, S., Mikheyev, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo', R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, V., Popa, A., Raino', J., Reynoldson, F., Ronga, C., Satriano, K., Scholberg, A., Sciubba, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle', V., Togo, M., Vakili, C. W., Walter, R., Webb, M. Ambrosio, R. Antolini, D. Bakari, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, Y. Becherini, R. Bellotti, C. Bemporad, P. Bernardini, H. Bilokon, C. Bloise, C. Bower, M. Brigida, F. Cafagna, D. Campana, M. Carboni, S. Cecchini, bF. Cei, V. Chiarella, B. C. Choudhary, D. Cosson, S. Coutu, G. De Cataldo, H. Dekhissi, C. De Marzo, I. De Mitri, U. Denni, J. Derkauoi, M. De Vincenzi, A. Di Credico, C. Favuzzi, C. Forti, A. Frani, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, A. Grillo, F. Guarino, C. Gustavino, A. Habig, K. Hanson, R. Heinz, E. Iarocci, E. Katsavounidi, I. Katsavounidi, E. Kearn, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, D. S. Levin, P. Lipari, M. J. Longo, F. Loparco, F. Maaroufi, G. Mancarella, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, D. Martello, A. Marzari-Chiesa, M. N. Mazziotta, A. Mengucci, D. G. Michael, S. Mikheyev, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, R. Nolty, C. Orth, G. Osteria, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, L. Perrone, S. Petrera, V. Popa, l A. Rain`o, J. Reynoldson, F. Ronga, C. Satriano, K. Scholberg, A. Sciubba, M. Sioli, M. Sitta, nP. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle’, V. Togo, M. Vakili, C. W. Walter, R. Webb, Giannini, Gianrossano, P., Bernardini, G., DE CATALDO, C., DE MARZO, I., DE MITRI, J., Derkaoui, DE VINCENZI, Mario, A., DI CREDICO, Alec, Habig, CHARLES E., Lane, F., Maaroufi, G., Mancarella, D., Martello, A., MARZARI CHIESA, S., Mikheev, STUART L., Mufson, D., Nicolo, L., Perrone, A., Raino, and G., Tarle

Subjects
oscillazione di flavour, Particle physics, Physics and Astronomy (miscellaneous), Neutrini atmosferici, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, MACRO, muon neutrino, Nuclear physics, Muon neutrino, neutrino oscillation, Macro, Neutrino oscillation, Engineering (miscellaneous), Charged current, Astroparticle physics, Physics, neutrino oscillations, atmospheric neutrino, High Energy Physics::Phenomenology, Detector, esperimento sotterraneo, macro detector, High Energy Physics::Experiment, Neutrino, Atmospheric neutrino
Abstract

The final analysis of atmospheric neutrino events collected with the MACRO detector is presented. Three different classes of events, generated by neutrinos in different energy ranges, are studied looking at rates, angular distributions and estimated energies. The results are consistent for all the subsamples and indicate a flux deficit that depends on energy and path…length of neutrinos. The no…-oscillation hypothesis is excluded at about 5 standard deviations, while the hypothesis of muon neutrino oscillating in tau neutrino gives a satisfactory description of all data. The parameters with highest probability in a two flavour scenario are maximum mixing and Delta m^2 = 0.0023 eV^2. This result is independent of the absolute normalization of the atmospheric neutrino fluxes. The data can also be used to put experimental constrain on this normalization.

Published
2004

13. The MEG detector for μ +→e+ γ decay search

Author

F. Renga, C Topchyan, Angela Papa, A. Graziosi, Yasuhiro Nishimura, Donato Nicolo, Bi Khazin, Hajime Nishiguchi, Am Baldini, M. Rossella, N. P. Kravchuk, E. Ripiccini, G. M. A. Lim, Y. Hisamatsu, S. Galeotti, N. Curalli, Malte Hildebrandt, Luca Galli, A.S. Popov, D. Kaneko, K. Ozone, D. Mzavia, M. De Gerone, Roberto Di Nardo, C. Cerri, M. Corbo, F. Tenchini, G. Piredda, S. Yamada, Giovanni Signorelli, M. Schneebeli, H. Natori, C. Bemporad, S. Yamamoto, A. S. Korenchenko, Flavio Gatti, L. Del Frate, Ryu Sawada, Pw Cattaneo, D. Zanello, R. Valle, Satoshi Mihara, T. Iwamoto, W. R. Molzon, M. Panareo, K. Fratini, Pr Kettle, E Baracchini, Fabrizio Cei, F.V. Ignatov, X. Bai, Marco Grassi, S. Doke, C. Voena, F. Morsani, F. Raffaelli, Katsuyu Kasami, R. Pazzi, Wataru Ootani, Yuki Fujii, G. Gallucci, Satoru Yamashita, F Xiao, G. Cavoto, Gianluigi Boca, A. Maki, A. de Bari, Tomiyoshi Haruyama, Stefan Ritt, Yv Yudin, J. Adam, O. Kiselev, F. Sergiampietri, D.N. Grigoriev, S. Suzuki, Takehiko Mori, Yusuke Uchiyama, S. Dussoni, B Golden, J. Egger, J., Adam, X., Bai, A. M., Baldini, E., Baracchini, C., Bemporad, G., Boca, P. W., Cattaneo, G., Cavoto, F., Cei, C., Cerri, M., Corbo, N., Curalli, A., De Bari, M., De Gerone, L., Del Frate, S., Doke, S., Dussoni, J., Egger, K., Fratini, Y., Fujii, L., Galli, S., Galeotti, G., Gallucci, F., Gatti, B., Golden, M., Grassi, A., Graziosi, D. N., Grigoriev, T., Haruyama, M., Hildebrandt, Y., Hisamatsu, F., Ignatov, T., Iwamoto, D., Kaneko, K., Kasami, P. R., Kettle, B. I., Khazin, O., Kiselev, A., Korenchenko, N., Kravchuk, G., Lim, A., Maki, S., Mihara, W., Molzon, T., Mori, F., Morsani, D., Mzavia, R., Nardò, H., Natori, D., Nicolò, H., Nishiguchi, Y., Nishimura, W., Ootani, K., Ozone, Panareo, Marco, A., Papa, R., Pazzi, G., Piredda, A., Popov, F., Raffaelli, F., Renga, E., Ripiccini, S., Ritt, M., Rossella, R., Sawada, M., Schneebeli, F., Sergiampietri, G., Signorelli, S., Suzuki, F., Tenchini, C., Topchyan, Y., Uchiyama, R., Valle, C., Voena, F., Xiao, S., Yamada, S., Yamamoto, S., Yamashita, Yudin, Y. u. V., and D., Zanello

Subjects
Physics, Antiparticle, Muon, Spectrometer, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Photon energy, Charged Lepton Flavor Violation, Particle detector, Lepton, Nuclear physics, Particle decay, Positron, Physics::Accelerator Physics, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract

The MEG (Mu to Electron Gamma) experiment has been running at the Paul Scherrer Institut (PSI), Switzerland since 2008 to search for the decay μ +→e+ γ by using one of the most intense continuous μ + beams in the world. This paper presents the MEG components: the positron spectrometer, including a thin target, a superconducting magnet, a set of drift chambers for measuring the muon decay vertex and the positron momentum, a timing counter for measuring the positron time, and a liquid xenon detector for measuring the photon energy, position and time. The trigger system, the read-out electronics and the data acquisition system are also presented in detail. The paper is completed with a description of the equipment and techniques developed for the calibration in time and energy and the simulation of the whole apparatus., The European Physical Journal C, 73 (4), ISSN:1434-6044, ISSN:1434-6052

Published
2013

14. Performance of the MACRO streamer tube system in the search for magnetic monopoles

Author

S. Coutu, E. Kearns, A. Rainò, Np Longley, Lawrence Sulak, Mario Sitta, C. Gustavino, A. Marzari-Chiesa, C. Bemporad, G. Ludlam, C. Orth, V. Chiarella, C. W. Peck, F.J. Ronga, P. Monacelli, L. Patrizii, G. Mandrioli, V. Bisi, E. Lamanna, M. N. Mazziotta, M. Mittelbrunn, R. Baker, Marco Monteno, C. Bloise, M. Goretti, M. Severi, P. Fusco, C. Favuzzi, G. Osteria, S. Parlati, Andrea Carlo Marini, M. G. Castellano, F. Tassoni, G. Battistoni, S. Cecchini, Alec Habig, R.M. Heinz, Roberto Bellotti, C. W. Walter, A. Hawthorne, P. Serra-Lugaresi, R. Nolty, A. Corona, P. Guarnaccia, F. Guarino, Kael Hanson, L. Miller, D. Levin, C. Okada, H. G. Giannini, R. Steinberg, M. Spinetti, J. Reynoldson, Teresa Montaruli, D. G. Michael, Vincenzo Patera, F. Sartogo, C. Forti, C. Eane, M. De Vincenzi, N. D. Pignatano, F. Cafagna, M. J. Longo, Marco Grassi, G. Giacomelli, J. T. Hong, C. Satriano, Donato Nicolo, G. Auriemma, Gregory Tarle, A. A. Grillo, A. Baldini, P. Spinelli, I. De Mitri, S P Mikheyev, C. R. Bower, V. Valente, D. Martello, A. Sciubba, S. Petrera, V. Togo, Paolo Lipari, C. De Marzo, G. C. Barbarino, O. Palamara, M. Ambrosio, Fabrizio Cei, J. A. Musser, Severino Angelo Maria Bussino, Eugenio Scapparone, A. Di Credico, R. Antolini, G. de Cataldo, S. Kyriazopoulou, P. Pistilli, R. Pazzi, V. Popa, R. C. Webb, E. Iarocci, Maurizio Spurio, A. Surdo, D. Campana, M. Carboni, J. L. Stone, Barry C. Barish, L. Satta, H. Dekhissi, N. Giglietto, G. Mancarella, Kate Scholberg, R. Liu, M. Calicchio, U. Rubizzo, Halina Bilokon, O. Erriquez, Erik Katsavounidis, P. Bernardini, S. L. Mufson, A. Margiotta-Neri, A. Sanzgiri, Y. Lu, Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Corona A., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini H.G., Giglietto N., Goretti M., Grassi M., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Eane C., Levin D.S., Lipari P., Liu R., Longley N.P., Longo M.J., Lu Y., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Mittelbrunn M., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Okada C., Orth C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pignatano N.D., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Rubizzo U., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Tassoni F., Togo V., Valente V., Walter C.W., Webb R., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, H. G., Giannini, N., Giglietto, M., Goretti, M., Grassi, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Eane, D. S., Levin, P., Lipari, R., Liu, N. P., Longley, M. J., Longo, Y., Lu, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrunn, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, F., Tassoni, V., Togo, V., Valente, C. W., Walter, R., Webb, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, R, Longley, Np, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrunn, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Tassoni, F, Togo, V, Valente, V, Walter, Cw, Webb, R., Barbarino, Giancarlo, and Guarino, Fausto

Subjects
Physics, Physics::Instrumentation and Detectors, High Energy Physics::Lattice, Detector, Magnetic monopole, Astronomy and Astrophysics, Cosmic ray, Time resolution, MACRO, Gran Sasso, Computational physics, Nuclear physics, Tube (fluid conveyance), Macro
Abstract

We describe the techniques chosen to search tor magnetic monopoles using the MACRO streamer tube sub-system. The hardware and the details of the analysis procedures will be discussed also. The results for slowly moving monopoles are reported from a first data taking period using only part of the detector. © 1995 Elsevier Science B.V. All rights reserved.

Published
1995
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15. Calibration and monitoring of the MEG experiment by a proton beam from a Cockcroft-Walton accelerator

Author

J. Adam, X. Bai, A. Baldini, E. Baracchini, A. Barchiesi, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, G. Cecchet, F. Cei, C. Cerri, A. De Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, L. Galli, G. Gallucci, F. Gatti, B. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, D. Kaneko, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, R. Nardò, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, A. Papa, R. Pazzi, G. Piredda, A. Popov, F. Renga, S. Ritt, M. Rossella, R. Sawada, M. Schneebeli, F. Sergiampietri, G. Signorelli, S. Suzuki, C. Topchyan, V. Tumakov, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Y.u. V. Yudin, D. Zanello, PANAREO, Marco, J., Adam, X., Bai, A., Baldini, E., Baracchini, A., Barchiesi, C., Bemporad, G., Boca, P. W., Cattaneo, G., Cavoto, G., Cecchet, F., Cei, C., Cerri, A., De Bari, M., De Gerone, T., Doke, S., Dussoni, J., Egger, L., Galli, G., Gallucci, F., Gatti, B., Golden, M., Grassi, D. N., Grigoriev, T., Haruyama, M., Hildebrandt, Y., Hisamatsu, F., Ignatov, T., Iwamoto, D., Kaneko, P. R., Kettle, B. I., Khazin, O., Kiselev, A., Korenchenko, N., Kravchuk, A., Maki, S., Mihara, W., Molzon, T., Mori, D., Mzavia, H., Natori, R., Nardò, D., Nicolò, H., Nishiguchi, Y., Nishimura, W., Ootani, Panareo, Marco, A., Papa, R., Pazzi, G., Piredda, A., Popov, F., Renga, S., Ritt, M., Rossella, R., Sawada, M., Schneebeli, F., Sergiampietri, G., Signorelli, S., Suzuki, C., Topchyan, V., Tumakov, Y., Uchiyama, R., Valle, C., Voena, F., Xiao, S., Yamada, A., Yamamoto, S., Yamashita, Yudin, Y. u. V., and D., Zanello

Subjects
Calibration, Beam monitoring, γ-rays, Cockcroft–Walton accelerator
Abstract

The MEG experiment at PSI searches for the decay μ→eγ at a level of ≈10^−13 on the branching ratio BR(μ→eγ/μ→tot), well beyond the present experimental limit (BR≤1.2×10^−11) and is sensitive to the predictions of SUSY-GUT theories. To reach this goal the experiment uses one of the most intense continuous surface muon beams available (≈10^8μ/s) and relies on advanced technology (LXe calorimetry, a gradient-field superconducting spectrometer as well as flexible and powerful trigger and acquisition systems). In order to maintain the highest possible energy, time and spatial resolutions for such detector, frequent calibration and monitoring, using a Cockcroft–Walton proton accelerator, are required. The proton beam is brought to the centre of MEG by a special bellows insertion system and travels in a direction opposite to the one of the normal μ-beam. Protons interact with a lithium tetraborate (Li2B4O7) nuclear target and produce one γ (17.6 MeV) from the reaction 3-7 Li(p, γ)8-4 or two coincident γs (11.67 and 4.4 MeV) from the reaction 11-5 B(p, γ)12-6 C*. The 17.6 MeV γ is used for calibrating and monitoring the LXe calorimeter (σEγ/Eγ=3.85±0.15% at 17.6 MeV) while the coincident 11.67 and 4.4 MeV γs are used to measure the relative timing of the calorimeter and the spectrometer timing counters (σ_delta_t=0.450±0.015ns).

Published
2011

16. New Limit on the Lepton-Flavor-Violating Decay μ→eγ

Author

J. Adam, X. Bai, A. M. Baldini, E. Baracchini, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, F. Cei, C. Cerri, A. de Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, K. Fratini, Y. Fujii, L. Galli, G. Gallucci, F. Gatti, B. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, A. Papa, R. Pazzi, G. Piredda, A. Popov, F. Renga, S. Ritt, M. Rossella, R. Sawada, F. Sergiampietri, G. Signorelli, S. Suzuki, F. Tenchini, C. Topchyan, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Y.u. V. Yudin, D. Zanello, PANAREO, Marco, J., Adam, X., Bai, A. M., Baldini, E., Baracchini, C., Bemporad, G., Boca, P. W., Cattaneo, G., Cavoto, F., Cei, C., Cerri, A., de Bari, M., De Gerone, T., Doke, S., Dussoni, J., Egger, K., Fratini, Y., Fujii, L., Galli, G., Gallucci, F., Gatti, B., Golden, M., Grassi, D. N., Grigoriev, T., Haruyama, M., Hildebrandt, Y., Hisamatsu, F., Ignatov, T., Iwamoto, P. R., Kettle, B. I., Khazin, O., Kiselev, A., Korenchenko, N., Kravchuk, A., Maki, S., Mihara, W., Molzon, T., Mori, D., Mzavia, H., Natori, D., Nicolò, H., Nishiguchi, Y., Nishimura, W., Ootani, Panareo, Marco, A., Papa, R., Pazzi, G., Piredda, A., Popov, F., Renga, S., Ritt, M., Rossella, R., Sawada, F., Sergiampietri, G., Signorelli, S., Suzuki, F., Tenchini, C., Topchyan, Y., Uchiyama, R., Valle, C., Voena, F., Xiao, S., Yamada, A., Yamamoto, S., Yamashita, Yudin, Y. u. V., and D., Zanello

Subjects
lepton-flavor-violating decay
Abstract

We present a new result based on an analysis of the data collected by the MEG detector at the Paul Scherrer Institut in 2009 and 2010, in search of the lepton-flavor-violating decay μ→eγ. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8×10^14 muon decays, gives a 90% C.L. upper limit of 2.4×10^-12 on the branching ratio of the μ→eγ decay, constituting the most stringent limit on the existence of this decay to date.

Published
2011

17. Nuclearite search with the MACRO detector at Gran Sasso

Author

M. Ambrosio, R. Antolini, C. Aramo, G. Auriemma, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, R. Bellotti, C. Bemporad, H. Bilokon, V. Bisi, C. Bloise, C. Bower, S. Bussino, F. Cafagna, M. Calicchio, D. Campana, M. Carboni, M. Castellano, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, S. Coutu, L. D. Benedictis, G. D. Cataldo, H. Dekhissi, E. D. Marzo, J. Derkaoui, M. D. Vincenzi, A. D. Credico, O. Erriquez, C. Favuzzi, C. Forti, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, L. Gray, A. Grillo, F. Guarino, P. Guarnaccia, C. Gustavino, A. Habig, K. Hanson, R. Heinz, Y. Huang, E. Iarocci, E. Katsavounidis, E. Kearns, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, T. Lari, D. S. Levin, P. Lipari, N. P. Longley, M. J. Longo, F. Maaroufi, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, A. Marzari Chiesa, M. N. Mazziotta, D. G. Michael, S. Mikheyev, L. Miller, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, C. Orth, G. Osteria, M. Ouchrif, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, S. Petrera, P. Pistilli, V. Popa, V. Pugliese, A. Raino, A. Rastelli, J. Reynoldson, F. Ronga, U. Rubizzo, C. Satriano, L. Satta, E. Scapparone, K. Scholberg, A. Sciubba, P. Serra, M. Severi, M. Sioli, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle, V. Togo, D. Ugolotti, M. Vakili, C. W. Walter, R. Webb, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARTELLO, Daniele, PERRONE, Lorenzo, M., Ambrosio, R., Antolini, C., Aramo, G., Auriemma, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, S., Coutu, L. D., Benedicti, G. D., Cataldo, H., Dekhissi, E. D., Marzo, DE MITRI, Ivan, J., Derkaoui, M. D., Vincenzi, A. D., Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, Y., Huang, E., Iarocci, E., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, T., Lari, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, P., Pistilli, V., Popa, V., Pugliese, A., Raino, A., Rastelli, J., Reynoldson, F., Ronga, U., Rubizzo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Severi, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, D., Ugolotti, M., Vakili, C. W., Walter, R., Webb, Ambrosio, M, Antolini, R, Aramo, C, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Benedictis, L, De Cataldo, G, Dekhissi, H, De Marzo, E, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Huang, Y, Iarocci, E, Katsavounidis, E, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Lari, T, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Pugliese, V, Raino, A, Rastelli, A, Reynoldson, J, Ronga, F, Rubizzo, U, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Severi, M, Sioli, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Ugolotti, D, Vakili, M, Walter, Cw, Webb, R., and M. Ambrosio, R. Antolini, C. Aramo, G. Auriemma, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, R. Bellotti, C. Bemporad, P. Bernardini, H. Bilokon, V. Bisi, C. Bloise, C. Bower, S. Bussino, F. Cafagna, M. Calicchio, D. Campana, M. Carboni, M. Castellano, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, S. Coutu, L. De Benedictis, G. De Cataldo, H. Dekhissi, C. De Marzo, I. De Mitri, J. Derkaoui, M. De Vincenzi, A. Di Credico, O. Erriquez, C. Favuzzi, C. Forti, P. Fusco, G. Giacomelli, G. Giannini , N. Giglietto, M. Giorgini, M. Grassi, L. Gray, A. Grillo, F. Guarino, P. Guarnaccia, C. Gustavino, A. Habig, K. Hanson, R. Heinz, Y. Huang, E. Iarocci, E. Katsavounidis, E. Kearns, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, T. Lari, D. S. Levin, P. Lipari, N. P. Longley, M. J. Longo, F. Maarou, G. Mancarella, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, D. Martello, A. Marzari-Chiesa, M. N. Mazziotta, D. G. Michael, S. Mikheyev, L. Miller, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, C. Orth, G. Osteria, M. Ouchrif, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, L. Perrone, S. Petrera, P. Pistilli, V. Popa, V. Pugliese, A. Raino, A. Rastelli, J. Reynoldson, F. Ronga, U. Rubizzo, C. Satriano, L. Satta, E. Scapparone, K. Scholberg, A. Sciubba, P. Serra, M. Severi, M. Sioli, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarlè, V. Togo, D. Ugolotti, M. Vakili, C. W. Walter, R. Webb

Subjects
Physics and Astronomy (miscellaneous), MACRO, Engineering (miscellaneous), Gran Sasso
Abstract

In this paper we present the results of a search for nuclearites in the penetrating cosmic radiation using the scintillator and track-etch subdetectors of the MACRO apparatus. The analyses cover the beta = v/c range at the detector depth (3700 hg/cm(2)) 10(-5) < beta < 1; for beta = 2 x 10(-3) the flux limit is 2.7 x 10(-16) cm(-2)s(-1)sr(-1) for an isotropic flux of nuclearites, and twice this value for a flux of downgoing nuclearites.

Published
2000

18. Atmospheric neutrino oscillations from upward throughgoing muon multiple scattering in MACRO

Author

M. Carboni, D. Campana, A. Surdo, M. Giorgini, Vincenzo Patera, G. Giannini, C. Bloise, E. Kearns, C. Forti, M. Spinetti, A. Sciubba, S. Cecchini, C. Favuzzi, A. Baldini, A. Rrhioua, G. Giacomelli, M. De Vincenzi, J. L. Stone, O. Palamara, B. C. Barish, N. Giglietto, Mario Sitta, R.M. Heinz, E. Iarocci, C. Satriano, A. Di Credico, Annarita Margiotta, L. R. Sulak, Gregory Tarle, C. Gustavino, S P Mikheyev, Ashavani Kumar, F. Loparco, S. Kyriazopoulou, G. de Cataldo, D. Bakari, A. Rainò, D. Levin, C. Bemporad, R. Caruso, R. C. Webb, E. Katsavounidis, C. Orth, Severino Angelo Maria Bussino, P. Serra, V. Popa, P. Bernardini, G. Mandrioli, Tommaso Chiarusi, M. Grassi, Yvonne Becherini, Fabrizio Cei, G. Sirri, C. W. Walter, M. Brigida, Michael J. Longo, Donato Nicolo, Giuseppe Osteria, Kate Scholberg, F. Cafagna, M. N. Mazziotta, D. Martello, Hyun-Chul Kim, A. Marzari-Chiesa, Marco Monteno, A. A. Grillo, Alec Habig, I. De Mitri, M. Cozzi, J. Derkaoui, Ioannis Katsavounidis, F. Maaroufi, G. C. Barbarino, P. Spinelli, Kael Hanson, P. Fusco, C. R. Bower, L. Perrone, Maximiliano Sioli, C. De Marzo, Eugenio Scapparone, R. Antolini, V. Togo, J. A. Musser, H. Dekhissi, Andrea Carlo Marini, Paolo Lipari, M. Vakili, Roberto Bellotti, G. Mancarella, R. Nolty, C. W. Peck, J. Reynoldson, Teresa Montaruli, R. Pazzi, S. Coutu, Frederic Jean Ronga, S. L. Mufson, B. C. Choudhary, Shahid Manzoor, D. G. Michael, S. Petrera, Maurizio Spurio, R. Steinberg, M. Ambrosio, V. Chiarella, M. Calicchio, Halina Bilokon, P. Monacelli, E. Lamanna, G Battistoni, C. E. Lane, L. Patrizii, Barbarino, Giancarlo, Ambrosio, M, Antolini, R, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, E, Calicchio, M, Campana, D, Carboni, M, Caruso, R, Cecchini, S, Cei, F, Chiarella, V, Chiarusi, T, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kumar, A, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., Ambrosio M., Antolini R., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Becherini Y., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Caruso R., Cecchini S., Cei F., Chiarella V., Chiarusi T., Choudhary B.C., Coutu S., Cozzi M., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., Derkaoui J., de Vincenzi M., di Credico A., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Grillo A., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kumar A., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Manzoor S., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Orth C., Osteria G., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Popa V., Raino A., Reynoldson J., Ronga F., Rrhioua A., Satriano C., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Walter C.W., Webb R., Bernardini, Paolo, Martello, Daniele, DE MITRI, Ivan, Mancarella, Giovanni, Perrone, Lorenzo, and Macro, Collaboration

Subjects
Astroparticle physics, Physics, Elastic scattering, Particle physics, Nuclear and High Energy Physics, Muon, Scattering, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, MACRO, Gran Sasso, High Energy Physics - Experiment, Massless particle, Nuclear physics, High Energy Physics - Experiment (hep-ex), Physique des particules élémentaires, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract

The energy of atmospheric neutrinos detected by MACRO was estimated using multiple coulomb scattering of upward throughgoing muons. This analysis allows a test of atmospheric neutrino oscillations, relying on the distortion of the muon energy distribution. These results have been combined with those coming from the upward throughgoing muon angular distribution only. Both analyses are independent of the neutrino flux normalization and provide strong evidence, above the 4 sigma level, in favour of neutrino oscillations., 10 pages, 7 figures, submitted to Physics Letters B

Published
2003
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19. A limit for the μ → e γ decay from the MEG experiment

Author

J. Adam, X. Bai, A. Baldini, E. Baracchini, A. Barchiesi, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, G. Cecchet, F. Cei, C. Cerri, A. De Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, L. Galli, G. Gallucci, F. Gatti, B. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, D. Kaneko, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, R. Nardò, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, A. Papa, R. Pazzi, G. Piredda, A. Popov, F. Renga, S. Ritt, M. Rossella, R. Sawada, M. Schneebeli, F. Sergiampietri, G. Signorelli, S. Suzuki, C. Topchyan, V. Tumakov, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Y.u. V. Yudin, D. Zanello, PANAREO, Marco, J., Adam, X., Bai, A., Baldini, E., Baracchini, A., Barchiesi, C., Bemporad, G., Boca, P. W., Cattaneo, G., Cavoto, G., Cecchet, F., Cei, C., Cerri, A., De Bari, M., De Gerone, T., Doke, S., Dussoni, J., Egger, L., Galli, G., Gallucci, F., Gatti, B., Golden, M., Grassi, D. N., Grigoriev, T., Haruyama, M., Hildebrandt, Y., Hisamatsu, F., Ignatov, T., Iwamoto, D., Kaneko, P. R., Kettle, B. I., Khazin, O., Kiselev, A., Korenchenko, N., Kravchuk, A., Maki, S., Mihara, W., Molzon, T., Mori, D., Mzavia, H., Natori, R., Nardò, D., Nicolò, H., Nishiguchi, Y., Nishimura, W., Ootani, Panareo, Marco, A., Papa, R., Pazzi, G., Piredda, A., Popov, F., Renga, S., Ritt, M., Rossella, R., Sawada, M., Schneebeli, F., Sergiampietri, G., Signorelli, S., Suzuki, C., Topchyan, V., Tumakov, Y., Uchiyama, R., Valle, C., Voena, F., Xiao, S., Yamada, A., Yamamoto, S., Yamashita, Yudin, Y. u. V., and D., Zanello

Subjects
Lepton flavour violation, Muon decay
Abstract

A search for the decay μ+→e+γ, performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR(μ+→e+γ)2.8×10^−11 (90% C.L.). This corresponds to the measurement of positrons and photons from ~10^14 stopped μ+ decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector.

Published
2010

20. Measurement of the decoherence function with the MACRO detector at Gran Sasso

Author

G. Ludlam, Paolo Giubellino, Pierluigi Campana, Roberto Bellotti, C. Bemporad, S. Coutu, C. Forti, S. L. Nutter, Massimo Masera, E. Lamanna, G. Giacomelli, L. Foti, J. T. Hong, G. Rosa, Marco Monteno, S. Klein, E. Kearns, A. Marzari Chiesa, D. G. Michael, V. Valente, E. Iarocci, G. DeCataldo, Mario Sitta, C. Gustavino, J. Petrakis, P. Matteuzzi, M. Spinetti, C. Okada, V. Togo, Giuseppe Osteria, M. Ambrosio, S. Parlati, J. L. Stone, Edward Diehl, Pio Pistilli, P. Serra Lugaresi, F.J. Ronga, M. De Vincenzi, W. A. Worstell, M. Severi, C. W. Walter, Steven Ahlen, F. Cafagna, C. E. Lane, V. Bisi, C. Lee, C. Chiera, R.M. Heinz, G. Battistoni, C. Satriano, G. Auriemma, Alec Habig, M. Grassi, P. Green, N. Giglietto, Gregory Tarle, Severino Angelo Maria Bussino, Paolo Lipari, G. Mandrioli, F. Guarino, P. Spinelli, L. Miller, G. Mancarella, D. Levin, A. Corona, Erik Katsavounidis, J. Reynoldson, L. Patrizii, G. Liu, V. Chiarella, S. L. Mufson, G. C. Barbarino, N. D. Pignatano, R. Steinberg, A. Margiotta-Neri, A. Cobis, J. A. Musser, Eugenio Scapparone, O. Palamara, A. A. Grillo, Lawrence Sulak, C. W. Peck, A. Di Credico, S. Kyriazopoulou, P. Monacelli, R. C. Webb, M. J. Longo, Fabrizio Cei, S. Cecchini, C. Bloise, P. Fusco, S. Petrera, Andrea Carlo Marini, F. Predieri, C. Favuzzi, D. Martello, M. Calicchio, Halina Bilokon, L. Ramello, R. Pazzi, A. Marin, D. Ficenec, O. Erriquez, Maurizio Spurio, M. Carboni, A. Surdo, Vincenzo Patera, A. Sciubba, A. Baldini, G. Giannini, R. Antolini, C. DeMarzo, J. Steele, Barry C. Barish, Kate Scholberg, P. Bernardini, R. Liu, H. Dekhussi, D. Campana, Robert A. Cormack, L. Satta, S., Ahlen, M., Ambrosio, R., Antolini, G., Auriemma, A., Baldini, G., Barbarino, B., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, P., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, C., Chiera, A., Cobi, R., Cormack, A., Corona, S., Coutu, G., Decataldo, H., Dekhussi, C., Demarzo, M., De Vincenzi, A., Di Credico, E., Diehl, O., Erriquez, C., Favuzzi, D., Ficenec, C., Forti, L., Foti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, P., Giubellino, M., Grassi, P., Green, A., Grillo, F., Guarino, C., Gustavino, A., Habig, R., Heinz, J., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Klein, S., Kyriazopoulou, E., Lamanna, C., Lane, C., Lee, D., Levin, P., Lipari, G., Liu, R., Liu, M., Longo, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marin, A., Marini, Martello, Daniele, A., Chiesa, M., Masera, P., Matteuzzi, D., Michael, L., Miller, P., Monacelli, M., Monteno, S., Mufson, J., Musser, S., Nutter, C., Okada, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C., Peck, J., Petraki, S., Petrera, N., Pignatano, P., Pistilli, F., Predieri, L., Ramello, J., Reynoldson, F., Ronga, G., Rosa, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, J., Steele, R., Steinberg, J., Stone, L., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C., Walter, R., Webb, W., Worstell, Barbarino, Giancarlo, Guarino, Fausto, The MACRO, Collaboration, Ahlen, S, Ambrosio, M, Antolini, R, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Campana, P, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Chiera, C, Cobis, A, Cormack, R, Corona, A, Coutu, S, Decataldo, G, Dekhussi, H, Demarzo, C, Devincenzi, M, Dicredico, A, Diehl, E, Erriquez, O, Favuzzi, C, Ficenec, D, Forti, C, Foti, L, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giubellino, P, Grassi, M, Green, P, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Klein, S, Kyriazopoulou, S, Lamanna, E, Lane, C, Lee, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longo, Mj, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marin, A, Marini, A, Martello, D, Chiesa, Am, Masera, M, Matteuzzi, P, Michael, Dg, Miller, L, Monacelli, P, Monteno, M, Mufson, S, Musser, J, Nutter, S, Okada, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, Nd, Pistilli, P, Predieri, F, Ramello, L, Reynoldson, J, Ronga, F, Rosa, G, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Lugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steele, J, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, R, Worstell, W., Ahlen S., Ambrosio M., Antolini R., Auriemma G., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bussino S., Cafagna F., Calicchio M., Campana D., Campana P., Carboni M., Cecchini S., Cei F., Chiarella V., Chiera C., Cobis A., Cormack R., Corona A., Coutu S., DeCataldo G., Dekhussi H., DeMarzo C., De Vincenzi M., Di Credico A., Diehl E., Erriquez O., Favuzzi C., Ficenec D., Forti C., Foti L., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giubellino P., Grassi M., Green P., Grillo A., Guarino F., Gustavino C., Habig A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Klein S., Kyriazopoulou S., Lamanna E., Lane C., Lee C., Levin D.S., Lipari P., Liu G., Liu R., Longo M.J., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marin A., Marini A., Martello D., Chiesa A.M., Masera M., Matteuzzi P., Michael D.G., Miller L., Monacelli P., Monteno M., Mufson S., Musser J., Nutter S., Okada C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrakis J., Petrera S., Pignatano N.D., Pistilli P., Predieri F., Ramello L., Reynoldson J., Ronga F., Rosa G., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Lugaresi P.S., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steele J., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Valente V., Walter C.W., Webb R., and Worstell W.

Subjects
Physics, Particle physics, Muon, Quantum decoherence, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, MACRO, Particle detector, Gran Sasso, Nuclear physics, High Energy Physics::Experiment, Macro, Nuclear Experiment, Zenith
Abstract

A measurement of the underground muon decoherence function has been performed using the multiple muon events collected by the MACRO detector at the Gran Sasso National Laboratory. A detector-independent analysis is presented for different zenith regions and rock depths; this allows direct comparison with any model of hadronic interactions. The measured decoherence function is compared with the predictions of a Monte Carlo simulation based on data taken by recent collider experiments. © 1992 The American Physical Society.

Published
1992
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21. Limits on neutrino oscillations from the CHOOZ experiment

Author

M. Apollonio, M. Laiman, L. E. Price, B. Lefievre, Giovanni Santin, V. N. Vyrodov, J. Steele, M. D. Skorokhvatov, D. Kryn, R. Pazzi, A. A. Sabelnikov, Y. Kozlov, S. Riley, A. V. Martemyanov, H. W. Sobel, M. Obolensky, Donato Nicolo, G. Pieri, S. Tomshaw, G. Giannini, A. Baldini, B. D. Dieterle, H. de Kerret, S. V. Sukhotin, Fabrizio Cei, W. R. Kropp, D. Veron, Y. Declais, I. N. Machulin, C. Bemporad, R. Reeder, L. A. Mikaelyan, L. Foresti, M. Grassi, R. Steinberg, A.V. Etenko, C. E. Lane, J. George, V. P. Martemyanov, E. Caffau, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CHOOZ, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Normalization (statistics), Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, Flux, CHOOZ, 01 natural sciences, 7. Clean energy, Spectral line, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Sensitivity (control systems), 010306 general physics, Neutrino oscillation
Abstract

We present new results based on the entire CHOOZ data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the anti_nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10**-4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m**2. Lower sensitivity results, based only on the comparison of the positron spectra from the two different-distance nuclear reactors, are also presented; these are independent of the absolute normalization of the anti_nue flux, the cross section, the number of target protons and the detector efficiencies., 19 pages, 11 figures, Latex file

Published
1999
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22. Results from CHOOZ

Author

C. Bemporad

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, CHOOZ, Atomic and Molecular Physics, and Optics
Published
1999
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23. The measurement of upward going muons using the MACRO detector

Author

D. Martello, D. Campana, A. M. Baldini, P. Lipari, P. Pistilli, Kate Scholberg, Kael Hanson, Shahid Manzoor, C.W. Peck, P. Monacelli, L. De Benedictis, D.G. Michael, J. Musser, M. Ambrosio, O. Erriquez, S. L. Mufson, M. Sitta, L.R. Sulak, G. Giannini, G. Battistoni, M. Carboni, G. Giacomelli, O. Palamara, F. Cafagna, E. Iarocci, C. Gustavino, Marco Grassi, M. Calicchio, R. Pazzi, L. Gray, A. Sciubba, G. Tarle, L. Satta, S P Mikheyev, G.C. Barbarino, E. Lamanna, G. Osteria, S. Kyriazopoulou, S. Coutu, C. Orth, A. Marini, A. Sanzgiri, S. Cecchini, U. Rubizzo, Maurizio Spurio, C. Mazzotta, P. Bernardini, M. Castellano, J. Reynoldson, A. Di Credico, C. Aramo, N.P. Longley, F. Guarino, P. Spinelli, Teresa Montaruli, A. Marzari-Chiesa, F. Ronga, N. Giglietto, A. Hawthorne, G. Auriemma, G. Cunti, M. J. Longo, A. Habig, R.M. Heinz, Donato Nicolo, V. Bisi, C. W. Walter, E. Kearns, H. Bilokon, H. Dekhissi, V. Pugliese, V. Chiarella, P. Serra-Lugaresi, C. Favuzzi, M. Spinetti, M. Monteno, M.N. Mazziotta, L. Miller, D. Levin, C. Okada, R. Steinberg, Vincenzo Patera, E. Katsavounidis, A. Rainó, S. Petrera, S. Bussino, R. C. Webb, C. Bemporad, R. Nolty, G. Mandrioli, M. Severi, G. Mancarella, B.C. Barish, A. A. Grillo, C. Lane, C. Forti, V. Togo, G. De Cataldo, Eugenio Scapparone, M. De Vincenzi, V. Popa, P. Fusco, J.L. Stone, Maximiliano Sioli, C. R. Bower, C. Satriano, A. Surdo, A. Margiotta Neri, P. Guarnaccia, C. Bloise, C. De Marzo, R. Antolini, F. Maaroufi, L. Patrizii, I De Mitri, Fabrizio Cei, and R. Bellotti

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Neutrino detector, High Energy Physics::Experiment, Neutrino astronomy, Neutrino, Neutrino oscillation, Zenith
Abstract

The upward-going muon flux (Eμ > 1 GeV) has been measured with the underground detector MACRO at LNGS. The total number of measured events is compatible at the 8% c.l. with the expected one. Moreover, the zenith angular distribution of the measured flux does not match the expectation showing a deficit in the vertical direction where the apparatus performance is best known. Assuming an oscillation hypothesis with parameters in the range recently suggested to solve the atmospheric neutrino problem, the agreement increases, but not significantly. The results of an indirect dark matter search for a signal of WIMPs from the core of the Sun and of the Earth are given. Neutrino astronomy with MACRO is giving interesting results regarding possible high energy neutrino emission from pointlike sources and coincidences of neutrino events with γ-ray bursts.

Published
1999
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24. The cosmic ray proton,helium and CNO fluxes in the 100 TeV energy region from TeV muons and EAS atmospheric Cherenkov light observations of MACRO and EAS-TOP

Author

G. Giannini, F. Maaroufi, Ioannis Katsavounidis, G. C. Barbarino, G. Mandrioli, N. Giglietto, G. Mancarella, J. Reynoldson, Eugenio Scapparone, M. De Vincenzi, L. Perrone, Teresa Montaruli, Gregory Tarle, L. R. Sulak, G. Battistoni, M. Cozzi, L. Patrizii, G. Cini, Hyun-Chul Kim, A. A. Grillo, V. Popa, Pietro Antonioli, F.J. Ronga, M. Ambrosio, Mario Sitta, C. Gustavino, F. Arneodo, H. Dekhissi, R. Nolty, S. Cecchini, Carlo Vigorito, A. Chiavassa, S. L. Mufson, M. Spinetti, C. Favuzzi, Donato Nicolo, M. Iacovacci, I. De Mitri, M. Vakili, R. Antolini, M. Giorgini, M. J. Longo, B. C. Choudhary, C. Satriano, G. de Cataldo, G. Navarra, C. R. Bower, R.M. Heinz, R. Caruso, E. Katsavounidis, F. Guarino, Kate Scholberg, Giuseppe Osteria, A. Marzari-Chiesa, D. Martello, E. Kearns, S. Petrera, P. Fusco, Marco Monteno, J. L. Stone, C. De Marzo, S. Valchierotti, O. Saavedra, J. Derkaoui, A. Stamerra, Vincenzo Patera, M. E. Bertaina, L. Bergamasco, C. Forti, P. Spinelli, Andrea Carlo Marini, Kael Hanson, Marco Aglietta, C. Orth, F. Loparco, R. Pazzi, Severino Angelo Maria Bussino, J. A. Musser, A. Sciubba, Np Longley, G. Giacomelli, M. Brigida, A. Baldini, P. Galeotti, C. E. Lane, O. Erriquez, Maurizio Spurio, O. Palamara, B. C. Barish, S. Vernetto, P. L. Ghia, D. Campana, C. W. Peck, G. Sirri, E. Lamanna, Tommaso Chiarusi, Alec Habig, M. Grassi, D. G. Michael, M. Carboni, A. Rainò, C. Morello, C. Bemporad, W. Fulgione, F. Cafagna, R. Steinberg, M. N. Mazziotta, Maximiliano Sioli, Yvonne Becherini, Fabrizio Cei, G. Mannocchi, A. Di Credico, S. Kyriazopoulou, P. Vallania, V. Togo, Bruno Alessandro, Roberto Bellotti, D. Levin, A. Surdo, R. C. Webb, P. Bernardini, B. D'Ettorre Piazzoli, Antonella Castellina, Annarita Margiotta, Carlotta Castagnoli, M. Calicchio, Halina Bilokon, V. Chiarella, P. Monacelli, S. Coutu, G. C. Trinchero, E. Iarocci, G. Di Sciascio, Paolo Lipari, C. W. Walter, Aglietta M., Alessandro B., Antonioli P., Arneodo F., Bergamasco L., Bertaina M., Castagnoli C., Castellina A., Chiavassa A., Cini G., D'Ettorre Piazzoli B., di Sciascio G., Fulgione W., Galeotti P., Ghia P. L., Iacovacci M., Mannocchi G., Morello C., Navarra G., Saavedra O., Stamerra A., Trinchero G. C., Valchierotti S., Vallania P., Vernetto S., Vigorito C., Ambrosio M., Antolini R., Baldini A., Barbarino G. C., Barish B. C., Battistoni G., Becherini Y., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Caruso R., Cecchini S., Cei F., Chiarella V., Chiarusi T., Choudhary B. C., Coutu S., Cozzi M., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., Derkaoui J., de Vincenzi M., di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D. S., Lipari P., Longley N. P., Longo M. J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M. N., Michael D. G., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolò D., Nolty R., Orth C., Osteria G., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C. W., Perrone L., Petrera S., Popa V., Rainò A., Reynoldson J., Ronga F., Satriano C., Scapparone E., Scholberg K., Sciubba A., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J. L., Sulak L. R., Surdo A., Tarlé G., Togo V., Vakili M., Walter C. W., Webb R., M., Aglietta, B., Alessandro, P., Antonioli, F., Arneodo, L., Bergamasco, M., Bertaina, C., Castagnoli, A., Castellina, A., Chiavassa, G., Cini, B., D'Ettorre Piazzoli, G., Di Sciascio, W., Fulgione, P., Galeotti, P. L., Ghia, M., Iacovacci, G., Mannocchi, C., Morello, G., Navarra, O., Saavedra, A., Stamerra, G. C., Trinchero, S., Valchierotti, P., Vallania, S., Vernetto, C., Vigorito, M., Ambrosio, R., Antolini, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, C., Bower, M., Brigida, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, R., Caruso, S., Cecchini, F., Cei, V., Chiarella, T., Chiarusi, B. C., Choudhary, S., Coutu, M., Cozzi, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, J., Derkaoui, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, F., Guarino, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Loparco, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo', R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, V., Popa, A., Raino', J., Reynoldson, F., Ronga, C., Satriano, E., Scapparone, K., Scholberg, A., Sciubba, M., Sioli, G., Sirri, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle', V., Togo, M., Vakili, C. W., Walter, R., Webb, D'ETTORRE PIAZZOLI, Benedetto, Iacovacci, Michele, Aglietta, M, Alessandro, B, Antonioli, P, Arneodo, F, Bergamasco, L, Bertaina, M, Castagnoli, C, Castellina, A, Chiavassa, A, Cini, G, Piazzoli, Bd, Di Sciascio, G, Fulgione, W, Galeotti, P, Ghia, Pl, Iacovacci, M, Mannocchi, G, Morello, C, Navarra, G, Saavedra, O, Stamerra, A, Trinchero, Gc, Valchierotti, S, Vallania, P, Vernetto, S, Vigorito, C, Ambrosio, M, Antolini, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Caruso, R, Cecchini, S, Cei, F, Chiarella, V, Chiarusi, T, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., Guarino, Fausto, Barbarino, Giancarlo, Macro, and EAS TOP, Collaborations

Subjects
Proton, EAS-TOP, Astrophysics::High Energy Astrophysical Phenomena, Hadron, chemistry.chemical_element, Cosmic ray, MACRO, Nuclear physics, Raggi cosmici, cosmic rays, Cosmic rays, composition, high energies, extensive air showers, underground muons, Cherenkov radiation, Helium, Astroparticle physics, Physics, Muon, Cherenkov detectors, Astronomy and Astrophysics, Sciami estesi, chemistry, Muoni sotterranei, Physics::Accelerator Physics, High Energy Physics::Experiment, Nucleon, Composizione
Abstract

The primary cosmic ray (CR) proton, helium and CNO fluxes in the energy range 80-300 TeV are studied at the National Gran Sasso Laboratories by means of EAS-TOP (Campo Imperatore, 2005 m a.s.l.) and MACRO (deep underground, 3100 m w.e., the surface energy threshold for a muon reaching the detector being E-mu(th) approximate to 1.3 TeV). The measurement is based on: (a) the selection of primaries based on their energy/nucleon (i.e., with energy/nucleon sufficient to produce a muon with energy larger than 1.3 TeV) and the reconstruction of the shower geometry by means of the muons recorded by MACRO in the deep underground laboratories; (b) the detection of the associated atmospheric Cherenkov light (C.l.) signals by means of the C.l. detector of EAS-TOP. The C.l. density at core distance r > 100 m is directly related to the total primary energy E-0. Proton and helium ("p + He") and proton, helium and CNO ("p + He + CNO") primaries are thus selected at E-0 approximate to 80 TeV, and at E-0 similar or equal to 250 TeV, respectively. Their flux is measured: J(p+He)(80 TeV) = (1.8 +/- 0.4) x 10(-6) m(-1)-s(-1) sr(-1) TeV-1, and J(p+He+CNO)(250 TeV) = (1.1 +/- 0.3) x 10(-7) m(-2)-s(-1) sr(-1) TeV-1, their relative weights being J(p+He)(J(p+He+CNO)) over bar (250 TeV) = 0.78 +/- 0.17. By using the measurements of the proton spectrum obtained from the direct experiments and hadron flux data in the atmosphere, we obtain for the relative weights of the three components at 250 TeV: J(p) : J(He) : J(CNO) = (0.20 +/- 0.08) : (0.58 +/- 0.19) : (0.22 +/- 0.17). This corresponds to the dominance of helium over proton primaries at 100-1000 TeV, and a possible non-negligible contribution from CNO. The lateral distribution of Cherenkov light in Extensive Air Showers (EASs), which is related to the rate of energy deposit of the primary in the atmosphere, is measured for a selected proton and helium primary beam, and good agreement is found when compared with the one calculated with the CORSIKA/QGSJET simulation model. (C) 2004 Elsevier B.V. All rights reserved.

Published
2004

25. Search for stellar gravitational collapses with the MACRO detector

Author

M. Ambrosio, R. Antolini, D. Bakari, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, Y. Becherini, R. Bellotti, C. Bemporad, H. Bilokon, C. Bloise, C. Bower, M. Brigida, F. Cafagna, D. Campana, M. Carboni, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, D. Cosson, S. Coutu, G. De Cataldo, H. Dekhissi, C. De Marzo, U. Denni, J. Derkauoi, M. De Vincenzi, A. Di Credico, C. Favuzzi, C. Forti, A. Frani, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, A. Grillo, F. Guarino, C. Gustavino, A. Habig, K. Hanson, R. Heinz, E. Iarocci, E. Katsavounidis, I. Katsavounidis, E. Kearns, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, D. S. Levin, P. Lipari, M. J. Longo, F. Loparco, F. Maaroui, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, A. Marzari Chiesa, M. N. Mazziotta, A. Mengucci, D. G. Michael, S. Mikheyev, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo', R. Nolty, C. Orth, G. Osteria, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, S. Petrera, V. Popa, A. Raino', J. Reynoldson, F. Ronga, C. Satriano, K. Scholberg, A. Sciubba, M. Sioli, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle', V. Togo, M. Vakili, C. W. Walter, R. Webb, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARTELLO, Daniele, PERRONE, Lorenzo, M., Ambrosio, R., Antolini, D., Bakari, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, C., Bloise, C., Bower, M., Brigida, F., Cafagna, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, D., Cosson, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, U., Denni, J., Derkauoi, M., De Vincenzi, A., Di Credico, C., Favuzzi, C., Forti, A., Frani, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, F., Guarino, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, M. J., Longo, F., Loparco, F., Maaroui, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, A., Mengucci, D. G., Michael, S., Mikheyev, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo', R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, V., Popa, A., Raino', J., Reynoldson, F., Ronga, C., Satriano, K., Scholberg, A., Sciubba, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle', V., Togo, M., Vakili, C. W., Walter, and R., Webb

Subjects
neutrino, MACRO, Collasso stellare gravitazionale, supernova galattica, esperimento sotterraneo
Abstract

We present the final results of the search for stellar gravitational collapses obtained by the MACRO experiment. The detector was active for a stellar collapse search for more than 11 years and it was sensitive to collapses occurring all over in our galaxy for 8.6 years. A real time system for a prompt recognition of neutrino bursts was developed and was operating on-line for almost the whole life of the experiment. No signal compatible with a neutrino burst from a galactic supernova was observed.

Published
2004

26. Search for stellar gravitational collapses with the MACRO detector

Author

F. Maaroufi, D. G. Michael, Maximiliano Sioli, F. Loparco, C. Satriano, Chiarella, Gregory Tarle, C. Forti, Maurizio Spurio, G. Giacomelli, J. Derkaoui, R Pazzi, E. Lamanna, Donato Nicolo, Np Longley, Kate Scholberg, P. Spinelli, Halina Bilokon, Kael Hanson, R. Steinberg, C. E. Lane, A. Di Credico, L. Perrone, Alec Habig, M. Cozzi, M. Ambrosio, S. Kyriazopoulou, G. Mancarella, J. Reynoldson, Teresa Montaruli, A. Marzari-Chiesa, F.J. Ronga, D. Levin, C. W. Walter, Marco Monteno, H. Dekhissi, E. Iarocci, C. Bloise, Jl Stone, P. Fusco, R. C. Webb, R.M. Heinz, M. Vakili, Andrea Carlo Marini, G. Battistoni, L. R. Sulak, G. C. Barbarino, M. Spinetti, S. L. Mufson, Patera, G. Sirri, M. J. Longo, Roberto Bellotti, Annarita Margiotta, P. Bernardini, Paolo Lipari, C. W. Peck, M. Giorgini, Eugenio Scapparone, R. Nolty, Giuseppe Osteria, M. De Vincenzi, D. Martello, Fabrizio Cei, E. Katsavounidis, M. Grassi, A. Rainò, F. Cafagna, Mn Mazziotta, M. Brigida, C. Bemporad, I. De Mitri, C. R. Bower, E. Kearns, M. Carboni, C. De Marzo, D. Campana, J. A. Musser, Popa, A. Surdo, Ioannis Katsavounidis, C. Orth, A. Sciubba, A. Baldini, O. Palamara, B. C. Barish, B. C. Choudhary, Severino Angelo Maria Bussino, S. Petrera, S. Cecchini, C. Favuzzi, G. de Cataldo, S. Coutu, Togo, Hyun-Chul Kim, R. Antolini, G. Giannini, N. Giglietto, P. Monacelli, G. Mandrioli, L. Patrizii, A. A. Grillo, Mario Sitta, C. Gustavino, Ambrosio, M, Antolini, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Campana, D, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., Barbarino, Giancarlo, Russo, Stefano, M., Ambrosio, M. Ambrosio, R. Antolini, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, R. Bellotti, C. Bemporad, P. Bernardini, H. Bilokon, C. Bloise, C. Bower, M. Brigida, S. Bussino, F. Cafagna, D. Campana, M. Carboni, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, S.Coutu, M. Cozzi, G. De Cataldo, H. Dekhi, C. De Marzo, I. De Mitri, J. Derkaoui, M. De Vincenzi, A. Di Credico, C. Favuzzi, C. Forti, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, A. Grillo, C.Gustavino, A. Habig, K. Hanson, R. Heinz, E. Iarocci, E. Katsavounidi, I. Katsavounidi, E. Kearn, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, D. S. Levin, P. Lipari, N. P. Longley, M. J. Longo, F. Loparco, F. Maaroufi, G. Mancarella, G. Mandrioli, A. Margiotta, A. Marini, D. Martello, A. Marzari-Chiesa, M. N. Mazziotta, D. G. Michael, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo', R. Nolty, C. Orth, G. Osteria, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, L. Perrone, S. Petrera, V. Popa, A. Raino', J. Reynoldson, F. Ronga, C. Satriano, E. Scapparone, K. Scholberg, A. Sciubba, M. Sioli, G. Sirri, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle', V. Togo, M. Vakili, C. W. Walter, and R. Webb

Subjects
Physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Detector, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Signal, Galaxy, Gravitation, Supernova, Gravitational collapse, Astrophysics::Solar and Stellar Astrophysics, Neutrino, Macro, Engineering (miscellaneous), Astrophysics::Galaxy Astrophysics
Abstract

We present the final results of the search for stellar gravitational collapses obtained by the MACRO experiment. The detector was active for a stellar collapse search for more than 11 years and it was sensitive to collapses occurring all over in our galaxy for 8.6 years. A real time system for a prompt recognition of neutrino bursts was developed and was operating on-line for almost the whole life of the experiment. No signal compatible with a neutrino burst from a galactic supernova was observed.

Published
2004

27. The cosmic ray proton, helium and CNO fluxes in the 100-TeV energy region from TeV muons and EAS atmospheric Cherenkov light observations of MACRO and EAS-TOP

Author

M. AGLIETTA, B. ALESSANDRO, P. ANTONIOLI, F. ARNEODO, L. BERGAMASCO, M. BERTAINA, C. CASTAGNOLI, A. CASTELLINA, A. CHIAVASSA, G. CINI CASTAGNOLI, B. D'ETTORRE PIAZZOLI, G. DI SCIASCIO, W. FULGIONE, P. GALEOTTI, P. L. GHIA, M. IACOVACCI, G. MANNOCCHI, C. MORELLO, G. NAVARRA, O. SAAVEDRA, A. STAMERRA, G. C. TRINCHERO, S. VALCHIEROTTI, P. VALLANIA, S. VERNETTO, C. VIGORITO, M. AMBROSIO, R. ANTOLINI, A. BALDINI, G. C. BARBARINO, B. C. BARISH, G. BATTISTONI, Y. BECHERINI, R. BELLOTTI, C. BEMPORAD, P. BERNARDINI, H. BILOKON, C. BOWER, M. BRIGIDA, BUSSINO, Severino Angelo Maria, F. CAFAGNA, M. CALICCHIO, D. CAMPANA, M. CARBONI, R. CARUSO, S. CECCHINI, F. CEI, V. CHIARELLA, T. CHIARUSI, B. C. CHOUDHARY, S. COUTU, M. COZZI, G. DE CATALDO, H. DEKHISSI, C. DE MARZO, I. DE MITRI, J. DERKAOUI, A. DI CREDICO, O. ERRIQUEZ, C. FAVUZZI, C. FORTI, P. FUSCO, G. GIACOMELLI, G. GIANNINI, N. GIGLIETTO, M. GIORGINI, M. GRASSI, A. GRILLO, F. GUARINO, C. GUSTAVINO, ALEC HABIG, K. HANSON, R. HEINZ, E. IAROCCI, E. KATSAVOUNIDIS, I. KATSAVOUNIDIS, E. KEARNS, H. KIM, S. KYRIAZOPOULOU, E. LAMANNA, CHARLES E. LANE, D. S. LEVIN, P. LIPARI, N. P. LONGLEY, M. J. LONGO, F. LOPARCO, F. MAAROUFI, G. MANCARELLA, G. MANDRIOLI, A. MARGIOTTA, A. MARINI, D. MARTELLO, A. MARZARI CHIESA, M. N. MAZZIOTTA, D. G. MICHAEL, P. MONACELLI, T. MONTARULI, M. MONTENO, STUART L. MUFSON, J. MUSSER, D. NICOLO, R. NOLTY, C. ORTH, G. OSTERIA, O. PALAMARA, V. PATERA, L. PATRIZII, R. PAZZI, C. W. PECK, L. PERRONE, S. PETRERA, V. POPA, A. RAINO, J. REYNOLDSON, F. RONGA, C. SATRIANO, E. SCAPPARONE, K. SCHOLBERG, A. SCIUBBA, M. SIOLI, G. SIRRI, M. SITTA, P. SPINELLI, M. SPINETTI, M. SPURIO, R. STEINBERG, J. L. STONE, L. R. SULAK, A. SURDO, G. TARLE, V. TOGO, M. VAKILI, C. W. WALTER, R. WEBB, DE VINCENZI, Mario, M., Aglietta, B., Alessandro, P., Antonioli, F., Arneodo, L., Bergamasco, M., Bertaina, C., Castagnoli, A., Castellina, A., Chiavassa, G., CINI CASTAGNOLI, B., D'ETTORRE PIAZZOLI, G., DI SCIASCIO, W., Fulgione, P., Galeotti, P. L., Ghia, M., Iacovacci, G., Mannocchi, C., Morello, G., Navarra, O., Saavedra, A., Stamerra, G. C., Trinchero, S., Valchierotti, P., Vallania, S., Vernetto, C., Vigorito, M., Ambrosio, R., Antolini, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, C., Bower, M., Brigida, Bussino, Severino Angelo Maria, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, R., Caruso, S., Cecchini, F., Cei, V., Chiarella, T., Chiarusi, B. C., Choudhary, S., Coutu, M., Cozzi, G., DE CATALDO, H., Dekhissi, C., DE MARZO, I., DE MITRI, J., Derkaoui, DE VINCENZI, Mario, A., DI CREDICO, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, F., Guarino, C., Gustavino, Alec, Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, CHARLES E., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., MARZARI CHIESA, M. N., Mazziotta, D. G., Michael, P., Monacelli, T., Montaruli, M., Monteno, STUART L., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, V., Popa, A., Raino, J., Reynoldson, F., Ronga, C., Satriano, E., Scapparone, K., Scholberg, A., Sciubba, M., Sioli, G., Sirri, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, M., Vakili, C. W., Walter, and R., Webb

Subjects
Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment
Abstract

The primary cosmic ray (CR) proton, helium and CNO fluxes in the energy range 80-300 TeV are studied at the National Gran Sasso Laboratories by means of EAS-TOP (Campo Imperatore, 2005 m a.s.l.) and MACRO (deep underground, 3100 m w.e., the surface energy threshold for a muon reaching the detector being Eμth~1.3 TeV). The measurement is based on: (a) the selection of primaries based on their energy/nucleon (i.e., with energy/nucleon sufficient to produce a muon with energy larger than 1.3 TeV) and the reconstruction of the shower geometry by means of the muons recorded by MACRO in the deep underground laboratories; (b) the detection of the associated atmospheric Cherenkov light (C.l.) signals by means of the C.l. detector of EAS-TOP. The C.l. density at core distance r>100 m is directly related to the total primary energy E0. Proton and helium (``p+He'') and proton, helium and CNO (``p+He+CNO'') primaries are thus selected at E0~=80 TeV, and at E0~=250 TeV, respectively. Their flux is measured: Jp+He(80TeV)=(1.8+/-0.4)×10-6 m-2s-1sr-1TeV-1, and Jp+He+CNO(250TeV)=(1.1+/-0.3)×10-7 m-2s-1sr-1TeV-1, their relative weights being: Jp+He/Jp+He+CNO(250TeV)=0.78+/-0.17. By using the measurements of the proton spectrum obtained from the direct experiments and hadron flux data in the atmosphere, we obtain for the relative weights of the three components at 250 TeV: Jp:JHe:JCNO=(0.20+/-0.08):(0.58+/-0.19):(0.22+/-0.17). This corresponds to the dominance of helium over proton primaries at 100-1000 TeV, and a possible non-negligible contribution from CNO. The lateral distribution of Cherenkov light in Extensive Air Showers (EASs), which is related to the rate of energy deposit of the primary in the atmosphere, is measured for a selected proton and helium primary beam, and good agreement is found when compared with the one calculated with the CORSIKA/QGSJET simulation model.

Published
2004

28. The Primary cosmic ray composition between 10**15 and 10**16 eV from extensive air showers electromagnetic and TeV muon data

Author

M. AGLIETTA, B. ALESSANDRO, P. ANTONIOLI, F. ARNEODO, L. BERGAMASCO, M. BERTAINA, C. CASTAGNOLI, A. CASTELLINA, A. CHIAVASSA, G. CINI, B. D'ETTORRE PIAZZOLI, G. DI SCIASCIO, W. FULGIONE, P. GALEOTTI, P. L. GHIA, M. IACOVACCI, G. MANNOCCHI, C. MORELLO, G. NAVARRA, O. SAAVEDRA, A. STAMERRA, G. C. TRINCHERO, S. VALCHIEROTTI, P. VALLANIA, S. VERNETTO, C. VIGORITO, M. AMBROSIO, R. ANTOLINI, A. BALDINI, G. C. BARBARINO, B. C. BARISH, GIUESEPP BATTISTONI, R. BELLOTTI, C. BEMPORAD, P. BERNARDINI, H. BILOKON, C. BLOISE, C. BOWER, M. BRIGIDA, F. CAFAGNA, D. CAMPANA, M. CARBONI, S. CECCHINI, F. CEI, B. C. CHOUDHARY, S. COUTU, G. DE CATALDO, H. DEKHISSI, C. DE MARZO, I. DE MITRI, A. DI CREDICO, C. FORTI, P. FUSCO, G. GIACOMELLI, G. GIANNINI, N. GIGLIETTO, M. GIORGINI, M. GRASSI, A. GRILLO, C. GUSTAVINO, ALEC HABIG, K. HANSON, R. HEINZ, E. IAROCCI, E. KATSAVOUNIDIS, I. KATSAVOUNIDIS, E. KEARNS, H. KIM, S. KYRIAZOPOULOU, E. LAMANNA, CHARLES E. LANE, D. S. LEVIN, P. LIPARI, M. J. LONGO, F. LOPARCO, F. MAAROUFI, G. MANCARELLA, G. MANDRIOLI, A. MARGIOTTA, A. MARINI, D. MARTELLO, A. MARZARI CHIESA, M. N. MAZZIOTTA, D. G. MICHAEL, P. MONACELLI, T. MONTARULI, M. MONTENO, STUART L. MUFSON, J. MUSSER, D. NICOLO, R. NOLTY, C. ORTH, G. OSTERIA, O. PALAMARA, V. PATERA, L. PATRIZII, R. PAZZI, C. W. PECK, L. PERRONE, S. PETRERA, V. POPA, A. RAINO, J. REYNOLDSON, F. RONGA, C. SATRIANO, E. SCAPPARONE, K. SCHOLBERG, A. SCIUBBA, M. SIOLI, M. SITTA, P. SPINELLI, M. SPINETTI, M. SPURIO, R. STEINBERG, J. L. STONE, L. R. SULAK, A. SURDO, G. TARLE, V. TOGO, M. VAKILI, C. W. WALTER, R. WEBB, DE VINCENZI, Mario, M., Aglietta, B., Alessandro, P., Antonioli, F., Arneodo, L., Bergamasco, M., Bertaina, C., Castagnoli, A., Castellina, A., Chiavassa, G., Cini, B., D'ETTORRE PIAZZOLI, G., DI SCIASCIO, W., Fulgione, P., Galeotti, P. L., Ghia, M., Iacovacci, G., Mannocchi, C., Morello, G., Navarra, O., Saavedra, A., Stamerra, G. C., Trinchero, S., Valchierotti, P., Vallania, S., Vernetto, C., Vigorito, M., Ambrosio, R., Antolini, A., Baldini, G. C., Barbarino, B. C., Barish, Giuesepp, Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, C., Bloise, C., Bower, M., Brigida, F., Cafagna, D., Campana, M., Carboni, S., Cecchini, F., Cei, B. C., Choudhary, S., Coutu, G., DE CATALDO, H., Dekhissi, C., DE MARZO, I., DE MITRI, DE VINCENZI, Mario, A., DI CREDICO, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, C., Gustavino, Alec, Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, CHARLES E., Lane, D. S., Levin, P., Lipari, M. J., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., MARZARI CHIESA, M. N., Mazziotta, D. G., Michael, P., Monacelli, T., Montaruli, M., Monteno, STUART L., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, V., Popa, A., Raino, J., Reynoldson, F., Ronga, C., Satriano, E., Scapparone, K., Scholberg, A., Sciubba, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, M., Vakili, C. W., Walter, and R., Webb

Published
2004

29. The neural-network-based second-level trigger developed for the Chooz experiment

Author

P. Cristaudo, C. Bemporad, G. Pieri, Marco Grassi, Fabrizio Cei, G. Giannini, Donato Nicolo, M. Apollonio, A. M. Baldini, E. Caffau, and R. Pazzi

Subjects
Physics, Nuclear and High Energy Physics, Artificial neural network, business.industry, Detector, Real-time computing, CHOOZ, Nuclear power, Nuclear physics, Position (vector), High Energy Physics::Experiment, Neutrino, Neutrino oscillation, business, Instrumentation, Energy (signal processing)
Abstract

The Chooz experiment has recently started data taking and will soon start measuring the neutrino flux from two nuclear power reactors at an average distance of 1 km, aiming at discovering possible neutrino oscillations. A hardware implementation of a neural network algorithm was studied and built in order to rapidly (≈ 200 μs) reconstruct the energy and the position of the events inside the detector. The performances of this system and preliminary results on the first experimental data are presented. The system can be used for a fast rejection of background events.

Published
1997
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30. New Constraint on the Existence of theμ+→e+γDecay

Author

H. Natori, X. Bai, L. Galli, C. Cerri, Stefan Ritt, P. W. Cattaneo, Flavio Gatti, Giovanni Signorelli, Yasunori Fujii, M. Panareo, T. Iwamoto, Y. Hisamatsu, O. Kiselev, Y. Nishimura, Akira Yamamoto, A. Maki, A. M. Baldini, C. Voena, A. Graziosi, A. S. Korenchenko, P.R. Kettle, F. Sergiampietri, E. Baracchini, B. Golden, C. Bemporad, A.S. Popov, Roberto Di Nardo, F.V. Ignatov, Z. You, Wataru Ootani, B.I. Khazin, N. Kravchuk, G. Cavoto, F. Tenchini, J. Egger, A. de Bari, Satoru Yamashita, G. Piredda, Tomiyoshi Haruyama, S. Yamada, Ryu Sawada, D. Mzavia, D.N. Grigoriev, G. Boca, F. Xiao, Fabrizio Cei, N. Khomotov, G. M. A. Lim, M. De Gerone, Takehiko Mori, Yusuke Uchiyama, W. R. Molzon, Marco Grassi, M. Hildebrandt, Donato Nicolo, S. Suzuki, S. Dussoni, M. Rossella, D. Zanello, D. Kaneko, Yu.V. Yudin, Satoshi Mihara, Tadayoshi Doke, F. Renga, E. Ripiccini, J. Adam, Angela Papa, Hajime Nishiguchi, and C. Topchyan

Subjects
Physics, Particle physics, Muon, Branching fraction, General Physics and Astronomy, Supersymmetry, Lepton
Abstract

The analysis of a combined data set, totaling $3.6\ifmmode\times\else\texttimes\fi{}{10}^{14}$ stopped muons on target, in the search for the lepton flavor violating decay ${\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\gamma}$ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of $5.7\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}13}$ (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

Published
2013
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31. Searches for magnetic monopoles with the MACRO detector at Gran Sasso

Author

Vincenzo Patera, A. Sciubba, O. Palamara, M. Carboni, B. C. Barish, J. Musser, P. Bernardini, James R. Stone, Ana Maria Marin, A. Hawthorne, M. G. Castellano, G. Battistoni, C. W. Peck, C. Rossi, J. L. Stone, Kael Hanson, M. Ambrosio, S. L. Mufson, L. Satta, Severino Angelo Maria Bussino, G. Tarle, A. Margiotta-Neri, P. Pistilli, M. Severi, V. Valente, A. Rainò, R. Nolty, R. Pazzi, V. Chiarella, Marco Grassi, P. Serra Lugaresi, P. Guarnaccia, Edward Diehl, F. Sartogo, A. Sanzgiri, J. Petrakis, L. R. Sulak, G. Osteria, P. Monacelli, C. Bemporad, S. Coutu, V. Bisi, J. T. Hong, S. P. Ahlen, J. Reynoldson, R. Baker, Roberto Bellotti, F. Cafagna, R.M. Heinz, Y. Lu, Fabrizio Cei, Np Longley, G. C. Barbarino, Mario Sitta, D. G. Michael, C. Gustavino, Donato Nicolo, A. Di Credico, Maurizio Spurio, A. Surdo, M. Mittelbrun, E. Katsavounidis, S. Parlati, S. Kyriazopoulou, Paolo Lipari, M. Spinetti, C. Forti, Eugenio Scapparone, C. E. Lane, V. Popa, G. Ludlam, R. C. Webb, Marco Monteno, S. Petrera, T. Bosio, P. F. Spada, R. Fantini, M. Sioli, G. Giacomelli, I. De Mitri, A. M. Baldini, C. Orth, C. R. Bower, C. Favuzzi, M. De Vincenzi, G.L. Sanzani, C. De Marzo, C. Satriano, M. Calicchio, G. Auriemma, M. J. Longo, F. Guarino, D. Campana, Halina Bilokon, G. Liu, S P Mikheyev, Mn Mazziotta, D. Martello, Kate Scholberg, R. Liu, W. A. Worstell, E. Iarocci, C. W. Walter, Robert A. Cormack, H. Dekhissi, A. A. Grillo, U. Rubizzo, B. Pavesi, T. Montaruli, O. Erriquez, L. Patrizii, G. Mandrioli, F.J. Ronga, M. Goretti, A. Corona, R. Antolini, G. de Cataldo, L. Miller, D. Levin, G. Giannini, N. D. Pignatano, N. Giglietto, V. Togo, P. Matteuzzi, S. Cecchini, Alec Habig, G. Mamcarella, C. Okada, E. Kearns, A. Marzari-Chiesa, E. Lamanna, P. Spinelli, R. Steinberg, C. Bloise, P. Fusco, Andrea Carlo Marini, Paul J. Green, Ahlen, S, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bosio, T, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Castellano, M, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Cormak, R, Corona, A, Coutu, S, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, De Vincenzi, M, Di Credico, A, Diehl, E, Erriquez, O, Fantini, R, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Green, P, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiotta Neri, A, Marin, A, Marini, A, Martello, D, Marzari Chiesa, A, Matteuzzi, P, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrun, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, N, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rossi, C, Rubizzo, U, Sanzani, G, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra Luganesi, P, Severi, M, Sioli, M, Sitta, M, Spada, Pf, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, R, and Worstell, W.

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Magnetic monopole, Physics::Instrumentation and Detectors, Detector, Flux, MACRO, Scintillator, Atomic and Molecular Physics, and Optics, Relativistic particle, Nuclear physics, Planar, Macro, Underground detector
Abstract

MACRO is a large area multiple component detector located deep underground in Hall B of the Laboratori Nazionali del Gran Sasso in Italy. Its active components consist of tanks of liquid scintillator and planes of limited streamer tubes. In addition, there are two planar areas covered with passive track-etch plastics. The full detector measures 72 m × 12 m × 9.6 m providing a large sensitive area for the detection of penetrating particles. Multiple electronics systems provide triggering on particles over a wide range of velocities, in particular, for slowly moving massive particles such as grand unified magnetic monopoles. MACRO is sensitive to relativistic particles as well as ones whose velocities are as low as 10 −4 c. Various portions of the MACRO detector have been operational since 1989. Various data sets have been analyzed and although no monopoles have been found, stringent flux limits have been set using a variety of techniques. This paper summarizes the capabilities of MACRO for monopole detection and presents some experimental results which have been obtained to date.

Published
1996
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32. Large underground experiments

Author

C. Bemporad

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Atomic and Molecular Physics, and Optics, Supernova, Low energy, Gravitational collapse, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract

Large underground detectors are discussed in connection with low energy neutrino physics and astrophysics; a special emphasis is given to the search for neutrinos from stellar gravitational collapse.

Published
1996
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33. The photomultiplier test facility for the reactor neutrino oscillation experiment CHOOZ and the measurements of 250 8-in. EMI 9356KA B53 photomultipliers

Author

Y.M. Zhang, A. M. Baldini, G. Giannini, Marco Grassi, R. Pazzi, Donato Nicolo, C. Bemporad, P. Cristaudo, S. Stalio, F. Cei, S. Parlati, E. Caffau, and G. Pieri

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Test facility, EMI, Oscillation, Reactor neutrino, CHOOZ, Neutrino oscillation, Instrumentation
Abstract

We describe a LabView controlled PMT test facility developed for the CHOOZ neutrino oscillation experiment. The results relative to the measurements of 250 8-in. diameter EMI 9356KA B53 photomultipliers are presented.

Published
1996
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34. Search for the lepton flavour violating decay $$\mu ^+ \rightarrow \mathrm {e}^+ \gamma $$ µ + ? e + ? with the full dataset of the MEG experimentMEG Collaboration

Author

Toshinori Mori, M. Hildebrandt, Donato Nicolo, N. V. Khomutov, T. I. Kang, Francesco Grancagnolo, Z. Hodge, G. Boca, Marco Grassi, A. Mtchedilishvili, A. Pepino, Akira Yamamoto, A. Popov, Roberto Di Nardo, E. Baracchini, A. Corvaglia, D. Mzavia, G. Tassielli, Flavio Gatti, M. De Gerone, S. Ogawa, J. Egger, Fabio Morsani, A. Maki, Michele Biasotti, Yasunori Fujii, Satoshi Mihara, F. Berg, S. Nakaura, C. Voena, G. Rutar, E. Ripiccini, N. Kravchuk, G. M. A. Lim, Angela Papa, Wataru Ootani, C. Chiri, A. S. Korenchenko, G. Pizzigoni, D. Zanello, F. Ignatov, B.I. Khazin, C. Bemporad, Yury V. Yudin, S. Orito, Yusuke Uchiyama, S. Dussoni, A. D’Onofrio, T. Iwamoto, F. Renga, F. Sergiampietri, A. Graziosi, P.R. Kettle, G. Chiarello, Hajime Nishiguchi, M. Venturini, D. N. Grigoriev, Ryu Sawada, M. Nishimura, G. Signorelli, Fabrizio Cei, F. Tenchini, G. Cavoto, G. Piredda, Yu Bao, W. R. Molzon, Z. You, Michele Cascella, Roberto Pazzi, Tadayoshi Doke, P. W. Cattaneo, A. M. Baldini, M. Panareo, L. Galli, F. Raffaelli, Kayo Yoshida, Stefan Ritt, C. Cerri, K. Ieki, M. Simonetta, A. de Bari, Tomiyoshi Haruyama, D. Kaneko, and M. Rossella

Subjects
Physics, Particle physics, Antiparticle, Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Elementary particle, 01 natural sciences, Lepton number, Nuclear physics, Particle decay, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Lepton
Abstract

The final results of the search for the lepton flavour violating decay $$\mathrm {\mu }^+ \rightarrow \mathrm {e}^+ \mathrm {\gamma }$$ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009–2013 and totalling $$7.5\times 10^{14}$$ stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of $$ \mathcal{B} (\mu ^+ \rightarrow \mathrm{e}^+ \gamma ) < 4.2 \times 10^{-13}$$ (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.

Published
2016
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35. Search for lightly ionizing particles with the MACRO detector

Author

Mario Sitta, C. Gustavino, B. C. Choudhary, S. Coutu, A. Marzari-Chiesa, R.M. Heinz, F. Cei, L. Satta, D. G. Michael, Kate Scholberg, F.J. Ronga, Marco Monteno, S. Petrera, P. Bernardini, L. R. Sulak, V. Togo, G. Mandrioli, M. Vakili, R. Steinberg, M. N. Mazziotta, A. Di Credico, P. Serra, D. Campana, P. Pistilli, M. Ambrosio, S. Kyriazopoulou, R. Pazzi, J. L. Stone, D. Bakari, M. Carboni, R. C. Webb, F. Loparco, C. Bloise, M. Brigida, P. Fusco, Andrea Carlo Marini, Paolo Lipari, L. Perrone, V. Chiarella, Barry C. Barish, Roberto Bellotti, Giuseppe Osteria, V. Popa, Maurizio Spurio, M. Ouchrif, C. W. Peck, H. Dekhissi, P. Monacelli, Donato Nicolo, F. Cafagna, I. De Mitri, Ioannis Katsavounidis, C. W. Walter, C. R. Bower, L. Patrizii, Alec Habig, M. Grassi, E. Vilela, C. De Marzo, J. Derkaoui, J. A. Musser, G. Mancarella, J. Reynoldson, P. Spinelli, A. Rainò, Kael Hanson, Teresa Montaruli, Maximiliano Sioli, C. Bemporad, Np Longley, C. Orth, F. Guarino, C. E. Lane, V. Bisi, Lindsey Gray, D. Levin, G. Battistoni, R. Nolty, E. Iarocci, M. Calicchio, Annarita Margiotta, Halina Bilokon, Erik Katsavounidis, S. L. Mufson, F. Maaroufi, M. J. Longo, D. Martello, C. Forti, G. Giacomelli, L. Miller, S P Mikheyev, M. Spinetti, M. Giorgini, E. Kearns, C. Okada, E. Lamanna, C. Satriano, G. Auriemma, Gregory Tarle, G. C. Barbarino, Eugenio Scapparone, M. De Vincenzi, G. Giannini, N. Giglietto, G. de Cataldo, O. Erriquez, A. A. Grillo, Hyun-Chul Kim, R. Antolini, S. Cecchini, C. Favuzzi, A. Surdo, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, Severino Angelo Maria Bussino, M., Ambrosio, R., Antolini, G., Auriemma, D., Bakari, A., Baldini, Barbarino, Giancarlo, B., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, M., Brigida, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, B., Choudhary, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, I., De Mitri, J., Derkaoui, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, Guarino, Fausto, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D., Levin, P., Lipari, N., Longley, M., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., Marzari Chiesa, M., Mazziotta, D., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolò, R., Nolty, C., Orth, C., Okada, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C., Peck, L., Perrone, S., Petrera, P., Pistilli, V., Popa, A., Rainò, J., Reynoldson, F., Ronga, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J., Stone, L., Sulak, A., Surdo, G., Tarlè, V., Togo, M., Vakili, E., Vilela, C., Walter, R., Webb, Ambrosio, M, Antolini, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Okada, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Vilela, E, Walter, Cw, Webb, R., Perrone, Lorenzo, Macro, Collaboration, G. C., Barbarino, B. C., Barish, Bernardini, Paolo, B. C., Choudhary, G. D., Cataldo, C. D., Marzo, DE MITRI, Ivan, M. D., Vincenzi, A. D., Credico, F., Guarino, D. S., Levin, N. P., Longley, M. J., Longo, Mancarella, Giovanni, Martello, Daniele, M. N., Mazziotta, D. G., Michael, D., Nicolo, C. W., Peck, A., Raino, J. L., Stone, L. R., Sulak, G., Tarle, C. W., Walter, Ambrosio M., Antolini R., Auriemma G., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., Derkaoui J., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Gray L., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Orth C., Okada C., Osteria G., Ouchrif M., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Vilela E., Walter C.W., and Webb R.

Subjects
Physics, Nuclear and High Energy Physics, Muon, Flux, FOS: Physical sciences, Charge (physics), Elementary particle, Cosmic ray, MACRO, Electron, Electric charge, Gran Sasso, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Ionization, Atomic physics
Abstract

A search for lightly ionizing particles has been performed with the MACRO detector. This search was sensitive to particles with charges between $\fractional{5}$$e$ and close to the charge of an electron, with $\beta$ between approximately 0.25 and 1.0. Unlike previous searches both single track events and tracks buried within high multiplicity muon showers were examined. In a period of approximately one year no candidates were observed. Assuming an isotropic flux, for the single track sample this corresponds to a 90% C.L. upper flux limit $\Phi \leq 9.2 \times 10^{-15} cm^{-2} sec^{-1} sr^{-1}$ ., Comment: 15 pages, 7 figures, to be submitted to Phys. Rev. D.; References Added

Published
2000

36. Low energy atmospheric muon neutrinos in MACRO

Author

I. De Mitri, C. R. Bower, L. Patrizii, C. De Marzo, F. Cei, S. Cecchini, J. A. Musser, F. Maaroufi, C. Favuzzi, Paolo Lipari, A. Di Credico, Np Longley, C. E. Lane, J. Derkaoui, V. Popa, S. Kyriazopoulou, D. Bakari, P. Spinelli, M. Giorgini, Kael Hanson, Erik Katsavounidis, O. Erriquez, R. C. Webb, C. W. Peck, S. L. Mufson, M. Ouchrif, D. Martello, G. de Cataldo, Mario Sitta, C. Gustavino, E. Kearns, M. Brigida, Roberto Bellotti, J. L. Stone, G. Sirri, M. Carboni, Donato Nicolo, D. Campana, F. Loparco, P. Pistilli, C. Forti, C. Bloise, P. Serra, F. Cafagna, P. Fusco, G. Giacomelli, M. Calicchio, R. Pazzi, E. Iarocci, Halina Bilokon, Annarita Margiotta, Andrea Carlo Marini, S P Mikheyev, A. Surdo, Severino Angelo Maria Bussino, Maurizio Spurio, L. Satta, E. Vilela, D. G. Michael, Michael J. Longo, A. Marzari-Chiesa, L. R. Sulak, G. Battistoni, Marco Monteno, G. Giannini, G. Mandrioli, Lindsey Gray, M. Ambrosio, R. Nolty, M. Spinetti, Ioannis Katsavounidis, M. Grassi, M. N. Mazziotta, R. Steinberg, Kate Scholberg, R.M. Heinz, P. Bernardini, V. Chiarella, F. Guarino, N. Giglietto, Giuseppe Osteria, V. Bisi, P. Monacelli, Vincenzo Patera, S. Coutu, A. Sciubba, Hyun-Chul Kim, A. A. Grillo, C. Orth, A. Baldini, O. Palamara, B. C. Choudhary, V. Togo, C. W. Walter, A. Rainò, R. Antolini, S. Petrera, C. Bemporad, G. Mancarella, J. Reynoldson, Teresa Montaruli, Frederic Jean Ronga, L. Perrone, Barry C. Barish, H. Dekhissi, L. Miller, D. Levin, M. Vakili, G. C. Barbarino, Maximiliano Sioli, Eugenio Scapparone, M. De Vincenzi, C. Satriano, G. Auriemma, Gregory Tarle, Alec Habig, E. Lamanna, M., Ambrosio, R., Antolini, G., Auriemma, D., Bakari, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, M., Brigida, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, I., De Mitri, J., Derkaoui, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, Guarino, Fausto, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolò, R., Nolty, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, P., Pistilli, V., Popa, A., Rainò, J., Reynoldson, F., Ronga, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Sioli, G., Sirri, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlè, V., Togo, M., Vakili, E., Vilela, C. W., Walter, R., Webb, Ambrosio M., Antolini R., Auriemma G., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., Derkaoui J., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Gray L., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolom D., Nolty R., Orth C., Osteria G., Ouchrif M., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Pistilli P., Popa V., Rainoa A., Reynoldson J., Ronga F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Vilela E., Walter C.W., Webb R., Bernardini, Paolo, Martello, Daniele, DE MITRI, Ivan, Perrone, Lorenzo, Macro, Collaboration, Ambrosio, M, Antolini, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Vilela, E, Walter, Cw, and Webb, R.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Astronomy & Astrophysics, Physics, Nuclear, Physics, Particles & Fields, Muon, Detector, Particles & Fields, Flux, FOS: Physical sciences, MACRO, Gran Sasso, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Nuclear, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Event (particle physics), Charged current, Mixing (physics)
Abstract

We present the measurement of two event samples induced by atmospheric $\nu_\mu$ of average energy $ \bar {E}_\nu \sim 4 GeV$. In the first sample, the neutrino interacts inside the MACRO detector producing an upward-going muon leaving the apparatus. The ratio of the number of observed to expected events is $ 0.57 \pm0.05_{stat} \pm0.06_{syst} \pm0.14_{theor}$ with an angular distribution similar to that expected from the Bartol atmospheric neutrino flux. The second is a mixed sample of internally produced downward-going muons and externally produced upward-going muons stopping inside the detector. These two subsamples are selected by topological criteria; the lack of timing information makes it impossible to distinguish stopping from downgoing muons. The ratio of the number of observed to expected events is $0.71 \pm 0.05_{stat} \pm0.07_{syst} \pm0.18_{theor}$ . Using the ratio of the two subsamples (for which most theoretical uncertainties cancel) we can test the pathlength dependence of the oscillation hypothesis. The probability of agreement with the no-oscillation hypothesis is 5% . The deviations of our observations from the expectations has a preferred interpretation in terms of $\nu_\mu$ oscillations with maximal mixing and $\Delta m^2 \sim 10^{-3} \div 10^{-2} eV^2$. These parameters are in agreement with our results from upward throughgoing muons, induced by $\nu_\mu$ of much higher energies., Comment: 7 pages, 6 figures. Submitted to Phys. Lett. B

Published
2000
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37. New Limit on the Lepton-Flavor-Violating Decayμ+→e+γ

Author

N. Kravchuk, D.N. Grigoriev, F. Tenchini, J. Adam, G. Piredda, A. de Bari, Tomiyoshi Haruyama, D. Zanello, S. Yamada, Luca Galli, E. Baracchini, B.I. Khazin, R. Pazzi, Satoshi Mihara, D. Mzavia, Y. Nishimura, Angela Papa, C. Voena, S. Suzuki, M. Hildebrandt, Donato Nicolo, M. De Gerone, J. Egger, Flavio Gatti, Yu.V. Yudin, Stefan Ritt, F.V. Ignatov, A. Maki, Yasunori Fujii, G. Gallucci, Ryu Sawada, A. S. Korenchenko, P.R. Kettle, F. Renga, A.S. Popov, Akira Yamamoto, R. Valle, Fabrizio Cei, Hajime Nishiguchi, Marco Grassi, G. Boca, C. Bemporad, P. W. Cattaneo, M. Rossella, T. Iwamoto, K. Fratini, C. Topchyan, M. Panareo, Wataru Ootani, Y. Hisamatsu, W. R. Molzon, Giovanni Signorelli, C. Cerri, B. Golden, F. Sergiampietri, Satoru Yamashita, G. Cavoto, Tadayoshi Doke, A. M. Baldini, F. Xiao, Takehiko Mori, Yusuke Uchiyama, S. Dussoni, H. Natori, X. Bai, and O. Kiselev

Subjects
Physics, Particle physics, Muon, Likelihood analysis, Branching fraction, General Physics and Astronomy, High Energy Physics::Experiment, Limit (mathematics), Photon energy, Lepton, Positron energy
Abstract

We present a new result based on an analysis of the data collected by the MEG detector at the Paul Scherrer Institut in 2009 and 2010, in search of the lepton-flavor-violating decay ${\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\gamma}$. The likelihood analysis of the combined data sample, which corresponds to a total of $1.8\ifmmode\times\else\texttimes\fi{}{10}^{14}$ muon decays, gives a 90% C.L. upper limit of $2.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}12}$ on the branching ratio of the ${\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\gamma}$ decay, constituting the most stringent limit on the existence of this decay to date.

Published
2011
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38. Limits on dark matter WIMPs using upward-going muons in the MACRO detector

Author

Paolo Lipari, G. de Cataldo, M. Ambrosio, G. Tarle, P. Bernardini, Edward Diehl, F. Guarino, D. G. Michael, J. L. Stone, L. Satta, Shahid Manzoor, P. Serra-Lugaresi, J. Derkaoui, P. Spinelli, Kael Hanson, M. Spinetti, M. Carboni, V. Bisi, Donato Nicolo, F. Cei, B. C. Choudhary, C. Mazzotta, R.M. Heinz, E. Kearns, M. Giorgini, F. Cafagna, A. Margiotta Neri, G. C. Barbarino, G. Mancarella, G. Giannini, Kate Scholberg, Yichen Huang, Np Longley, Carla Aramo, C. Favuzzi, M. Severi, R. Steinberg, I. De Mitri, Lindsey Gray, D. Martello, S. Petrera, C. R. Bower, C. E. Lane, E. Iarocci, A. A. Grillo, N. Giglietto, C. W. Walter, C. De Marzo, Vincenzo Patera, Armando Rastelli, P. Pistilli, R. Pazzi, A. Rainò, C. W. Peck, M. Calicchio, J. A. Musser, A. Sciubba, C. Orth, Halina Bilokon, L. De Benedictis, C. Bemporad, A. Marzari-Chiesa, S. Cecchini, Mario Sitta, C. Gustavino, A. Di Credico, Eugenio Scapparone, Elisa Bernardini, Hyun-Chul Kim, S. Kyriazopoulou, O. Palamara, B. C. Barish, F. Maaroufi, Alec Habig, J. Reynoldson, G. Osteria, Teresa Montaruli, Frederic Jean Ronga, E. Lamanna, V. Popa, S. Coutu, G. Battistoni, Maurizio Spurio, A. Surdo, R. C. Webb, Marco Monteno, Maximiliano Sioli, Ioannis Katsavounidis, H. Dekhissi, R. Antolini, P. Guarnaccia, M. N. Mazziotta, Michael J. Longo, V. Togo, C. Bloise, S. L. Mufson, P. Fusco, V. Chiarella, L. Patrizii, Marco Grassi, Andrea Carlo Marini, G. Mandrioli, L. Miller, D. Levin, Severino Angelo Maria Bussino, P. Monacelli, A. Sanzgiri, A. Baldini, D. Ugolotti, O. Erriquez, Roberto Bellotti, C. Forti, G. Giacomelli, T. Lari, S P Mikheyev, Marcello Castellano, M. Ouchrif, M. Vakili, M. De Vincenzi, C. Satriano, G. Auriemma, E. Katsavounidis, L. R. Sulak, D. Campana, Ambrosio M., Antolini R., Aramo C., Auriemma G., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini E., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., De Benedictis L., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., Derkaoui J., De Vincenzi M., Di Credico A., Diehl E., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Gray L., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Heinz R., Huang Y., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Lari T., Levin D.S., Lipari P., Longley N.P., Longo M.J., Maaroufi F., Mancarella G., Mandrioli G., Manzoor S., Margiotta Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Mazzotta C., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Orth C., Osteria G., Ouchrif M., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pistilli P., Popa V., Raino A., Rastelli A., Reynoldson J., Ronga F., Sanzgiri A., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sioli M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Ugolotti D., Vakili M., Walter C.W., Webb R., Ambrosio, M, Antolini, R, Aramo, C, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, E, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, R, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Benedictis, L, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Diehl, E, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Huang, Y, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Lari, T, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Neri, Am, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Mazzotta, C, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pistilli, P, Popa, V, Raino, A, Rastelli, A, Reynoldson, J, Ronga, F, Sanzgiri, A, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra Lugaresi, P, Severi, M, Sioli, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Ugolotti, D, Vakili, M, Walter, Cw, Webb, R., M., Ambrosio, R., Antolini, C., Aramo, G., Auriemma, A., Baldini, G., Barbarino, B., Barish, G., Battistoni, R., Bellotti, C., Bemporad, E., Bernardini, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, B., Choudhary, S., Coutu, L., De Benedicti, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, J., Derkaoui, M., De Vincenzi, A., Di Credico, E., Diehl, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, Y., Huang, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, T., Lari, D., Levin, P., Lipari, N., Longley, M., Longo, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M., Mazziotta, C., Mazzotta, D., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C., Peck, S., Petrera, P., Pistilli, V., Popa, A., Rainò, A., Rastelli, J., Reynoldson, F., Ronga, A., Sanzgiri, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J., Stone, L., Sulak, A., Surdo, G., Tarlè, V., Togo, D., Ugolotti, M., Vakili, C., Walter, R., Webb, Barbarino, Giancarlo, and Guarino, Fausto

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Supersymmetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, Weakly interacting massive particles, Neutralino, Physics::Space Physics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, MACRO: Gran Sasso, Light dark matter
Abstract

We perform an indirect search for Weakly Interacting Massive Particles (WIMPs) using the MACRO detector to look for neutrino-induced upward-going muons resulting from the annihilation of WIMPs trapped in the Sun and Earth. The search is conducted in various angular cones centered on the Sun and Earth to accommodate a range of WIMP masses. No significant excess over the background from atmospheric neutrinos is seen and limits are placed on the upward-going muon fluxes from Sun and Earth. These limits are used to constrain neutralino particle parameters from supersymmetric theory, including those suggested by recent results from DAMA/NaI., Comment: 14 pages, 7 figures, submitted to Phys. Rev. D

Published
1999

39. High statistics measurement of the underground muon pair separation at Gran Sasso

Author

D. Martello, Maximiliano Sioli, M. Calicchio, S. Mufson, R. Heinz, P. Fusco, I. Katsavounidis, C. Gustavino, M. Giorgini, U. Rubizzo, N. Giglietto, C. Favuzzi, F. Guarino, G. Battistoni, M. Carboni, M. N. Mazziotta, R. Pazzi, A. Surdo, E. Katsavounidis, G. Tarlè, G. de Cataldo, S. Petrera, P. Lipari, V. Togo, I. De Mitri, B. C. Choudhary, L. Miller, M. De Vincenzi, S. Kyriazopoulou, D. G. Michael, A. Di Credico, G. Mancarella, O. Palamara, P. Spinelli, Kael Hanson, Shahid Manzoor, P. Serra-Lugaresi, Armando Rastelli, M. Vakili, E. Scapparone, M. Grassi, O. Erriquez, F. Maaroufi, H. Kim, R. Steinberg, C. De Marzo, M. Ouchrif, Maurizio Spurio, J. A. Musser, C. Mazzotta, G. Osteria, S. Cecchini, A. Rainò, G. Auriemma, C. Bemporad, Adalberto Sciubba, F. Ronga, R. Antolini, Roberto Bellotti, P. Pistilli, T. Lari, D. Campana, Y. Huang, E. Kearns, J. Derkaoui, M. J. Longo, A. A. Grillo, D. S. Levin, C. Aramo, E. Lamanna, L. Satta, L. Gray, Alec Habig, J. L. Stone, A. Marzari-Chiesa, F. Loparco, G. Giannini, V. Popa, C. W. Walter, C. Orth, Elisa Bernardini, C. Forti, M. Ambrosio, Kate Scholberg, Vincenzo Patera, B. C. Barish, C. Satriano, M. Monteno, J. Reynoldson, C. Bower, F. Cafagna, C. Bloise, L. Patrizii, Teresa Montaruli, H. Bilokon, C. Lane, G. Giacomelli, F. Cei, S. Mikheyev, A. Margiotta Neri, H. Dekhissi, P. Monacelli, M. Severi, A. Baldini, S. Bussino, Marcello Castellano, R. C. Webb, A. Marini, M. Spinetti, N. P. Longley, L. R. Sulak, C. W. Peck, S. Coutu, D. Ugolotti, E. Iarocci, V. Chiarella, G. Mandrioli, V. Bisi, M. Sitta, P. Bernardini, D. Nicoló, G. C. Barbarino, Barbarino, Giancarlo, Guarino, Fausto, M., Ambrosio, R., Antolini, C., Aramo, G., Auriemma, A., Baldini, G., Barbarino, B., Barish, G., Battistoni, R., Bellotti, C., Bemporad, E., Bernardini, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, B., Choudhary, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, J., Derkaoui, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, F., Guarino, C., Gustavino, A., Habig, K., Hanson, R., Heinz, Y., Huang, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, T., Lari, D., Levin, P., Lipari, N., Longley, M., Longo, F., Loparco, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M., Mazziotta, C., Mazzotta, D., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C., Peck, S., Petrera, P., Pistilli, V., Popa, A., Rainò, A., Rastelli, J., Reynoldson, F., Ronga, U., Rubizzo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J., Stone, L., Sulak, A., Surdo, G., Tarlè, V., Togo, D., Ugolotti, M., Vakili, C., Walter, R., Webb, Ambrosio M., Antolini R., Aramo C., Auriemma G., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini E., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., Derkaoui J., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Gray L., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Huang Y., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Lari T., Levin D.S., Lipari P., Longley N.P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Manzoor S., Margiotta Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Mazzotta C., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Orth C., Osteria G., Ouchrif M., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pistilli P., Popa V., Raino A., Rastelli A., Reynoldson J., Ronga F., Rubizzo U., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sioli M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Ugolotti D., Vakili M., Walter C.W., Webb R., Ambrosio, M, Antolini, R, Aramo, C, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, E, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Huang, Y, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Lari, T, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Neri, Am, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Mazzotta, C, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pistilli, P, Popa, V, Raino, A, Rastelli, A, Reynoldson, J, Ronga, F, Rubizzo, U, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra Lugaresi, P, Severi, M, Sioli, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Ugolotti, D, Vakili, M, Walter, Cw, and Webb, R.

Subjects
Physics, Systematic error, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Instrumentation and Detectors, Hadron, Nuclear Theory, FOS: Physical sciences, Function (mathematics), High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Monte carlo code, High Energy Physics::Experiment, Special care, MACRO: Gran Sasso, Nuclear Experiment, Energy (signal processing)
Abstract

We present a measurement of the underground decoherence function using multi-muon events observed in the MACRO detector at Gran Sasso at an average depth of 3800 hg/cm**2. Muon pair separations up to 70 m have been measured, corresponding to parent mesons with P_t < 1-2GeV/c. The accuracy of the measurement is such that the possible contribution of rare processes, such as mu + N ----> mu + N + mu- + mu+, can be experimentally studied. The measured decoherence function is compared with the predictions of the hadronic interaction model of the HEMAS Monte Carlo code. Good agreement is obtained. We interpret this agreement to indicate that no anomalous P_t components in soft hadron-Nucleus and Nucleus-Nucleus collisions are required by the MACRO experimental data., 38 pages, Latex, 10 figures, Corrected typos

Published
1999

40. The use of the reaction 9Be(α, γn)12C to determine the energy scale and the efficiency at low energies of stellar collapse neutrino detectors

Author

R. Pazzi, C. Bemporad, G. Giannini, Marco Grassi, Fabrizio Cei, and A. Baldini

Subjects
Physics, Nuclear and High Energy Physics, Hydrogen, Monte Carlo method, chemistry.chemical_element, Nuclear physics, Gravitation, Neutrino detector, chemistry, Cascade, Gravitational collapse, Scintillation counter, Instrumentation, Delayed neutron
Abstract

Experiments for the detection of gravitational stellar collapse ν e -events are most frequently based on the reaction: ν e + p → n + e + , followed by delayed neutron capture in hydrogen n + p → γ + d, E γ = 2.2 MeV. Data obtained by a low intensity Am/Be source (as n and γ-ray emitter), in association with MACRO scintillation counters, are being used to determine the capability of detecting delayed neutron capture from cascade n, γ-ray emissions. The 9 Be( α , γ n) 12 C reaction is a valuable tool for setting the optimum “stellar gravitational collapse trigger” working conditions both for the detection of the primary ν e -events and for the detection of the delayed neutron captures. The use of the Am/Be source allowed several experimental checks of Monte Carlo calculated detection efficiencies.

Published
1991
Full Text
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41. Observation of the shadowing of cosmic rays by the Moon using a deep underground detector

Author

A. Di Credico, G. de Cataldo, S. Kyriazopoulou, G. Mandrioli, M. Grassi, U. Rubizzo, M. Giorgini, C. Mazzotta, M. Severi, R. C. Webb, R.M. Heinz, Giuseppe Osteria, V. Pugliese, E. Kearns, C. W. Walter, F.J. Ronga, Erik Katsavounidis, S. L. Mufson, G. Giannini, H. Dekhissi, L. Gray, A. A. Grillo, C. Forti, B. C. Choudhary, N. Giglietto, J. L. Stone, P. Serra-Lugaresi, J. Derkaoui, P. Spinelli, Kael Hanson, G. Giacomelli, D. Ugolotti, M. Vakili, Hyun-Chul Kim, L. Satta, C. Orth, Kate Scholberg, Yichen Huang, S. Cecchini, L. R. Sulak, P. Bernardini, S P Mikheyev, C. Favuzzi, Mario Sitta, C. Gustavino, R. Antolini, Marcello Castellano, L. De Benedictis, Maximiliano Sioli, F. Maaroufi, D. Campana, M. Spinetti, F. Cafagna, A. Margiotta Neri, I. De Mitri, C. R. Bower, C. De Marzo, M. J. Longo, M. N. Mazziotta, J. A. Musser, S. Petrera, G. Mancarella, G. C. Barbarino, J. Reynoldson, F. Guarino, Carla Aramo, Teresa Montaruli, D. Martello, L. Miller, D. Levin, D. Nicoló, M. Ouchrif, Shahid Manzoor, M. Calicchio, Halina Bilokon, Roberto Bellotti, F. Cei, Eugenio Scapparone, A. Marzari-Chiesa, Severino Angelo Maria Bussino, Marco Monteno, M. Carboni, C. Bemporad, A. Surdo, Alec Habig, O. Palamara, R. Pazzi, O. Erriquez, Maurizio Spurio, Vincenzo Patera, A. Sciubba, A. Baldini, B. C. Barish, G. Battistoni, M. De Vincenzi, A. Rainò, P. Guarnaccia, C. Satriano, G. Auriemma, V. Popa, Gregory Tarle, M. Ambrosio, E. Iarocci, C. W. Peck, V. Bisi, S. Coutu, C. Bloise, P. Fusco, Paolo Lipari, Andrea Carlo Marini, D. G. Michael, V. Togo, R. Steinberg, V. Chiarella, P. Monacelli, L. Patrizii, P. Pistilli, E. Lamanna, Np Longley, C. E. Lane, M., Ambrosio, R., Antolini, C., Aramo, G., Auriemma, A., Baldini, G., Barbarino, B., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, B., Choudhary, S., Coutu, L., De Benedicti, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, J., Derkaoui, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, Y., Huang, E., Iarocci, E., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D., Levin, P., Lipari, N., Longley, M., Longo, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M., Mazziotta, C., Mazzotta, D., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C., Peck, S., Petrera, P., Pistilli, V., Popa, V., Pugliese, A., Rainò, J., Reynoldson, F., Ronga, U., Rubizzo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J., Stone, L., Sulak, A., Surdo, G., Tarlè, V., Togo, D., Ugolotti, M., Vakili, C., Walter, R., Webb, Barbarino, Giancarlo, Guarino, Fausto, Ambrosio, M, Antolini, R, Aramo, C, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Benedictis, L, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Huang, Y, Iarocci, E, Katsavounidis, E, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Neri, Am, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Mazzotta, C, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pistilli, P, Popa, V, Pugliese, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Sena Lugaresi, P, Severi, M, Sioli, R, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Ugolotti, D, Vakili, M, Walter, Cw, Webb, R., Ambrosio M., Antolini R., Aramo C., Auriemma G., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., Benedictis L., Cataldo G., Dekhissi H., Marzo C., Mitri I., Derkaoui J., Vincenzi M., Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Gray L., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Heinz R., Huang Y., Iarocci E., Katsavounidis E., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Maaroufi F., Mancarella G., Mandrioli G., Manzoor S., Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Mazzotta C., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Orth C., Osteria G., Ouchrif M., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pistilli P., Popa V., Pugliese V., Raino A., Reynoldson J., Ronga F., Rubizzo U., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sioli M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Ugolotti D., Vakili M., Walter C.W., and Webb R.

Subjects
Physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, FOS: Physical sciences, Astronomy, Flux, Cosmic ray, Astrophysics, High Energy Physics - Experiment, law.invention, Telescope, High Energy Physics - Experiment (hep-ex), law, Statistical analysis, Angular resolution, High Energy Physics::Experiment, MACRO: Gran Sasso
Abstract

Using data collected by the MACRO experiment during the years 1989-1996, we show evidence for the shadow of the moon in the underground cosmic ray flux with a significance of 3.6 sigma. This detection of the shadowing effect is the first by an underground detector. A maximum-likelihood analysis is used to determine that the angular resolution of the apparatus is 0.9+/-0.3 degrees. These results demonstrate MACRO's capabilities as a muon telescope by confirming its absolute pointing ability and quantifying its angular resolution., Comment: 14 pages, 8 figures Submitted to Phys. Rev. D

Published
1998

42. The performance of MACRO liquid scintillator in the search for magnetic monopoles with 10-3<1

Author

A. Di Credico, C. Bemporad, S. Kyriazopoulou, L. R. Sulak, J. L. Stone, L. Satta, C. W. Walter, R. C. Webb, G. Ludlam, M. N. Mazziotta, N. P. Longley, A. Hawthorne, Erik Katsavounidis, Roberto Bellotti, L. Miller, D. Levin, S. L. Mufson, R.M. Heinz, A. Margiotta-Neri, G. C. Barbarino, V. Valente, A. Marzari-Chiesa, J. Reynoldson, Teresa Montaruli, A. Sanzgiri, N. D. Pignatano, Severino Angelo Maria Bussino, H. Bilokon, F. Sartogo, D. G. Michael, Marco Monteno, G. Battistoni, S. Parlati, C. Okada, M. Goretti, M. Grassi, Fabrizio Cei, M. Ambrosio, Eugenio Scapparone, I. De Mitri, R. Cafagna, M. Severi, R. Nolty, C. R. Bower, G. Auriemma, P. Guarnaccia, G. Osteria, J. T. Hong, M. Spinetti, F. Guarino, G. Liu, C. De Marzo, C. E. Lane, M. J. Longo, J. A. Musser, D. Martello, M. De Vincenzi, D. Campana, V. Popa, C. Bloise, P. Fusco, R. Baker, A. Rainò, M. Calicchio, L. Patrizii, G. Mancarella, E. Lamanna, E. Kearns, Kate Scholberg, R. Fantini, O. Erriquez, C. Forti, P. Pistilli, C. Orth, C. Satriano, Andrea Carlo Marini, R. Pazzi, Gregory Tarle, G. Giacomelli, S. Petrera, R. Liu, D. Nicoló, F.J. Ronga, U. Rubizzo, Maurizio Spurio, A. Surdo, S P Mikheyev, Marcello Castellano, S. Cecchini, C. Favuzzi, T. Bosio, P. Green, Alec Habig, A. Corona, R. Steinberg, C. W. Peck, H. Dekhissi, S. Coutu, G. de Cataldo, V. Togo, V. Chiarella, P. Monacelli, V. Sinev, R. Antolini, G. Giannini, N. Giglietto, G. Mandrioli, A. A. Grillo, Mario Sitta, C. Gustavino, P. Serra-Lugaresi, P. Spinelli, Kael Hanson, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, B. C. Barish, M. Carboni, Paolo Lipari, P. Bernardini, E. Iarocci, V. Bisi, Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bosio T., Bower C., Bussino S., Cafagna R., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Corona A., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., De Vincenzi M., Di Credico A., Erriquez O., Fantini R., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Goretti M., Grassi M., Green P., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Liu G., Liu R., Longley N.P., Longo M.J., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Okada C., Orth C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pignatano N.D., Pistilli P., Popa V., Raino A., Reynoldson J., Spurio M., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, T., Bosio, C., Bower, S., Bussino, R., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, I., De Mitri, M., De Vincenzi, A., Di Credico, O., Erriquez, R., Fantini, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, P., Green, A., Grillo, Guarino, Fausto, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, N. P., Longley, M. J., Longo, G., Ludlam, G., Mancarella, G., Mandrioli, A., Margiotta Neri, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, V., Sinev, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, G. C., Barbarino, DE MITRI, Ivan, F., Guarino, Mancarella, Giovanni, Martello, Daniele, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bosio, T, Bower, C, Bussino, Severino Angelo Maria, Cafagna, R, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Fantini, R, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Green, P, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Jong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sinev, V, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, and Webb, R.

Subjects
Physics, Range (particle radiation), Photomultiplier, Magnetic monopole, Astronomy and Astrophysics, MACRO, Scintillator, Computational physics, Gran Sasso, Nuclear physics, Macro, Encoder, Energy (signal processing), Pulse height
Abstract

MACRO is designed to make a multiply redundant search for GUT magnetic monopoles over a wide velocity range. The 100 MHz pulse height recorder and synchronous encoder (PHRASE) and the energy reconstruction processor (ERP) are two components of that search, both based on the MACRO liquid scintillator. They are sensitive to monopoles with or without captured nuclei in the range beta similar to 10(-3) to beta similar to 1, Here, the performance of these systems is discussed, including also analysis methods and background evaluations.

Published
1997

43. Seasonal variations in the underground muon intensity as seen by MACRO

Author

G. C. Barbarino, J. L. Stone, G. Giannini, C. Bloise, Eugenio Scapparone, S. Cecchini, E. Lamanna, S. Paganini, C. Favuzzi, N. Giglietto, J. T. Hong, D. Campana, V. Valente, E. Kearns, R. Pazzi, M. De Vincenzi, C. Satriano, G. Auriemma, Gregory Tarle, D. Nicoló, C. Okada, Michael J. Longo, N. P. Longley, R.M. Heinz, L. Patrizii, Fabrizio Cei, Maurizio Spurio, G. de Cataldo, Pio Pistilli, C. Bemporad, Mario Sitta, C. Gustavino, A. Marzari-Chiesa, Severino Angelo Maria Bussino, Marco Monteno, F. Guarino, G. Liu, M. Calicchio, Halina Bilokon, C. Forti, M. Ambrosio, Roberto Bellotti, A. Hawthorne, O. Erriquez, G. Giacomelli, C. Orth, A. Corona, M. Carboni, F. Sartogo, Erik Katsavounidis, S P Mikheyev, Marcello Castellano, S. L. Mufson, A. Margiotta-Neri, A. Sanzgiri, G. Mandrioli, G. Battistoni, R. Baker, Kate Scholberg, M. Spinetti, L. Satta, R. Nolty, R. Antolini, A. Surdo, L. De Benedictis, P. Bernardini, P. Guarnaccia, R. Liu, D. Martello, V. Popa, T. Bosio, R. Fantini, L. R. Sulak, G. Ludlam, Barry C. Barish, H. Dekhissi, C. E. Lane, M. N. Mazziotta, O. Palamara, A. A. Grillo, A. Rainò, F. Maaroufi, M. Severi, Vincenzo Patera, U. Rubizzo, A. Sciubba, A. Baldini, P. Green, S. Coutu, V. Togo, Alec Habig, V. Chiarella, L. Miller, D. Levin, N. D. Pignatano, P. Monacelli, I. De Mitri, C. R. Bower, C. De Marzo, J. A. Musser, F. Cafagna, A. Di Credico, S. Kyriazopoulou, C. W. Walter, G. Mancarella, J. Reynoldson, Teresa Montaruli, R. C. Webb, D. G. Michael, Frederic Jean Ronga, E. Iarocci, V. Bisi, P. Fusco, S. Petrera, Andrea Carlo Marini, Paolo Lipari, R. Steinberg, C. W. Peck, P. Serra-Lugaresi, P. Spinelli, Kael Hanson, Giuseppe Osteria, S. Parlati, M. Goretti, M. Grassi, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bosio, T, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Debenedictis, L, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Fantini, R, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Green, P, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Ludlam, G, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Paganini, S, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, R., Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bosio T., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Corona A., Coutu S., de Benedictis L., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., de Vincenzi M., di Credico A., Erriquez O., Fantini R., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Goretti M., Grassi M., Green P., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Liu G., Liu R., Longley N.P., Longo M.J., Ludlam G., Maaroufi F., Mancarella G., Mandrioli G., Margiotta-Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Okada C., Orth C., Osteria G., Paganini S., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pignatano N.D., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Rubizzo U., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Valente V., Walter C.W., Webb R., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, T., Bosio, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, L., De Benedicti, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, M., De Vincenzi, A., Di Credico, O., Erriquez, R., Fantini, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, P., Green, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, N. P., Longley, M. J., Longo, G., Ludlam, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, S., Paganini, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, Barbarino, Giancarlo, and Guarino, Fausto

Subjects
Physics, Atmosphere, Nuclear physics, Particle physics, Muon, Pion, High Energy Physics::Experiment, Astronomy and Astrophysics, Detectors and Experimental Techniques, Macro, MACRO: Gran Sasso, Temperature coefficient, Intensity (heat transfer)
Abstract

Using 5.33 x 10(6) single muons collected in 1.46 x 10(4) live hours by MACRO during the period 1991-1994, we have searched for a correlation between variations in the underground muon rate, N-mu, and seasonal temperature variations in the atmosphere. These correlations are found to be present with high statistical significance. Analysis of the relatively complete December 1992-December 1994 subset of the data yields a value for the temperature coefficient, alpha(T) = (T/N-mu)(partial derivative N-mu/partial derivative T) = 0.83 +/- 0.13. Analysis of the total data Set gives consistent results. We have compared this result with the hypothesis that the muons observed in MACRO come from pion decays alone. Although our result is consistent with the 'pion only' hypothesis, a discussion of the sensitivity of our data sample to the kaon component of the cascades leading to observed muons underground will also be presented. (C) 1997 Elsevier Science B.V.

Published
1997

44. High energy cosmic ray physics with the MACRO experiment at gran sasso

Author

R. Baker, F.J. Ronga, G. Tarle, C. W. Peck, Roberto Bellotti, Vincenzo Patera, M. Goretti, A. Sciubba, O. Palamara, B. C. Barish, G. Giannini, A. Corona, M. Carboni, R.M. Heinz, Giovanni Mancarella, P. Serra-Lugaresi, Marco Grassi, L. Miller, D. Levin, Kael Hanson, P. Bernardini, O. Erriquez, C. Forti, Kate Scholberg, Donato Nicolo, N. Giglietto, M. Ambrosio, G. Osteria, C. Bloise, P. Fusco, A. Di Credico, M. Severi, G. C. Barbarino, G. Giacomelli, Andrea Carlo Marini, S. Kyriazopoulou, H. Dekhissi, D. G. Michael, V. Popa, A. Marzari-Chiesa, S. Cecchini, A. Rainò, Eugenio Scapparone, Alec Habig, R. C. Webb, J. T. Hong, U. Rubizzo, C. Bemporad, M. N. Mazziotta, S P Mikheyev, S. Petrera, E. Lamanna, C. W. Walter, P. Spinelli, Marco Monteno, V. Togo, S. Parlati, M. De Vincenzi, R. Antolini, V. Chiarella, R. Steinberg, G. de Cataldo, C. Satriano, G. Auriemma, J. Reynoldson, F. Cafagna, I. De Mitri, C. R. Bower, C. Okada, C. De Marzo, E. Kearns, J. L. Stone, L. Satta, T. Bosio, J. A. Musser, C. E. Lane, L. Patrizii, R. Fantini, G. Mandrioli, M. Spinetti, A. Hawthorne, F. Sartogo, P. Monacelli, Mario Sitta, C. Gustavino, Erik Katsavounidis, S. Coutu, S. L. Mufson, A. Margiotta-Neri, A. Sanzgiri, C. Favuzzi, A. M. Baldini, C. Orth, A. A. Grillo, M. G. Castellano, M. Calicchio, Halina Bilokon, G. Battistoni, M. J. Longo, R. Nolty, P. Guarnaccia, D. Martello, N. P. Longley, P. Pistilli, V. Bisi, Severino Angelo Maria Bussino, R. Pazzi, Maurizio Spurio, A. Surdo, L. R. Sulak, D. Campana, Paolo Lipari, F. Guarino, E. Iarocci, V. Valente, T. Montaruli, Fabrizio Cei, M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, T., Bosio, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, I., De Mitri, M., De Vincenzi, A., Di Credico, O., Erriquez, R., Fantini, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, A., Grillo, Guarino, Fausto, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, G., Mancarella, G., Mandrioli, A., Margiotta Neri, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bosio, T, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Fantini, R, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, and Webb, R.

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, High energy, Detector, Cosmic ray, Astrophysics, Macro, Atomic and Molecular Physics, and Optics
Abstract

The multimuon data collected by the MACRO detector at Gran Sasso have been analyzed using a new method. The resulting all-particle spectrum is consistent with EAS measurements but higher and flatter than the one obtained from direct experiments.

Published
1997

45. High energy cosmic ray physics with underground muons in MACRO. II. Primary spectra and composition

Author

A. Hawthorne, R. Baker, D. Campana, S. Cecchini, G. Mandrioli, V. Bisi, C. Okada, G. Giannini, C. Favuzzi, M. Severi, O. Palamara, G. Osteria, Marco Monteno, F. Guarino, R.M. Heinz, R. Pazzi, F.J. Ronga, D. G. Michael, N. P. Longley, C. Forti, Pio Pistilli, D. Nicoló, G. Giacomelli, Kate Scholberg, N. Giglietto, F. Cei, P. Bernardini, F. Cafagna, M. Goretti, Severino Angelo Maria Bussino, S P Mikheyev, M. Calicchio, V. Valente, Alec Habig, Marcello Castellano, Maurizio Spurio, A. A. Grillo, Halina Bilokon, R. Steinberg, I. De Mitri, C. W. Walter, C. R. Bower, Mario Sitta, C. Gustavino, A. Corona, C. W. Peck, U. Rubizzo, Erik Katsavounidis, A. Marzari-Chiesa, M. Ambrosio, S. L. Mufson, M. Spinetti, C. De Marzo, A. Margiotta-Neri, O. Erriquez, L. R. Sulak, F. Sartogo, G. Mancarella, C. Orth, J. Reynoldson, J. A. Musser, A. Sanzgiri, Teresa Montaruli, C. Bloise, P. Fusco, A. Di Credico, L. Patrizii, G. Battistoni, S. Kyriazopoulou, E. Lamanna, S. Petrera, Andrea Carlo Marini, L. Miller, D. Levin, R. Nolty, V. Popa, H. Dekhissi, P. Guarnaccia, R. C. Webb, R. Antolini, E. Kearns, G. de Cataldo, C. E. Lane, M. J. Longo, D. Martello, S. Coutu, J. L. Stone, L. Satta, V. Togo, V. Chiarella, P. Monacelli, S. Parlati, Roberto Bellotti, P. Serra-Lugaresi, P. Spinelli, Kael Hanson, M. Grassi, M. Carboni, A. Surdo, Vincenzo Patera, C. Bemporad, A. Sciubba, A. Baldini, B. C. Barish, M. Ricciardi, M. N. Mazziotta, J. T. Hong, M. De Vincenzi, C. Satriano, G. Auriemma, A. Rainò, Gregory Tarle, T. Bosio, R. Fantini, G. C. Barbarino, Eugenio Scapparone, Paolo Lipari, E. Iarocci, Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bosio T., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Corona A., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., De Vincenzi M., Di Credico A., Erriquez O., Fantini R., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Goretti M., Grassi M., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Mancarella G., Mandrioli G., Margiotta-Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Okada C., Orth C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pistilli P., Popa V., Raino A., Reynoldson J., Ricciardi M., Ronga F., Rubizzo U., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Valente V., Walter C.W., Webb R., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, T., Bosio, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, M., De Vincenzi, A., Di Credico, O., Erriquez, R., Fantini, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, M., Ricciardi, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, Barbarino, Giancarlo, Guarino, Fausto, Ambrosio, M., Antolini, R., Auriemma, G., Baker, R., Baldini, A., Barbarino, G. C., Barish, B. C., Battistoni, G., Bellotti, R., Bemporad, C., Bernardini, P., Bilokon, H., Bisi, V., Bloise, C., Bosio, T., Bower, C., Bussino, S., Cafagna, F., Calicchio, M., Campana, D., Carboni, M., Castellano, M., Cecchini, S., Cei, F., Chiarella, V., Corona, A., Coutu, S., de Cataldo, G., Dekhissi, H., de Marzo, C., de Mitri, I., de Vincenzi, M., di Credico, A., Erriquez, O., Fantini, R., Favuzzi, C., Forti, C., Fusco, P., Giacomelli, G., Giannini, G., Giglietto, N., Goretti, M., Grassi, M., Grillo, A., Guarino, F., Guarnaccia, P., Gustavino, C., Habig, A., Hanson, K., Hawthorne, A., Heinz, R., Hong, J. T., Iarocci, E., Katsavounidis, E., Kearns, E., Kyriazopoulou, S., Lamanna, E., Lane, C., Levin, D. S., Lipari, P., Longley, N. P., Longo, M. J., Mancarella, G., Mandrioli, G., Margiotta-Neri, A., Marini, A., Martello, D., Marzari-Chiesa, A., Mazziotta, M. N., Michael, D. G., Mikheyev, S., Miller, L., Monacelli, P., Montaruli, T., Monteno, M., Mufson, S., Musser, J., Nicol('o), D., Nolty, R., Okada, C., Orth, C., Osteria, G., Palamara, O., Parlati, S., Patera, V., Patrizii, L., Pazzi, R., Peck, C. W., Petrera, S., Pistilli, P., Popa, V., Rain('o), A., Reynoldson, J., Ricciardi, M., Ronga, F., Rubizzo, U., Sanzgiri, A., Sartogo, F., Satriano, C., Satta, L., Scapparone, E., Scholberg, K., Sciubba, A., Serra-Lugaresi, P., Severi, M., Sitta, M., Spinelli, P., Spinetti, M., Spurio, M., Steinberg, R., Stone, J. L., Sulak, L. R., Surdo, A., Tarl('e), G., Togo, V., Valente, V., Walter, C. W., and Webb, R.

Subjects
Physics, Mass number, Nuclear and High Energy Physics, Muon, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Elementary particle, Fermion, Spectral line, Nuclear physics, Radiation flux, High Energy Physics::Experiment, MACRO: Gran Sasso, Lepton
Abstract

Multimuon data from the MACRO experiment at Gran Sasso have been analyzed using a new method, which allows one to estimate the primary cosmic ray fluxes. The estimated all-particle spectrum is higher and flatter than the one obtained from direct measurements but is consistent with EAS array measurements. The spectral indexes of the fitted energy spectrum are 2.56[Formula presented]0.05 for [Formula presented]500 TeV and 2.9[Formula presented]0.3 for [Formula presented]5000 TeV with a gradual change at intermediate energies. The average mass number shows little dependence on the primary energy below 1000 TeV, with a value of 10.1[Formula presented]2.5 at 100 TeV. At higher energies the best fit average mass shows a mild increase with energy, even though no definite conclusion can be reached taking into account errors. The fitted spectra cover a range from [Formula presented] 50 TeV up to several thousand TeV. © 1997 The American Physical Society.

Published
1997

46. A NaI activation method for the measurement of the weak thermal neutron field around the MEG experiment

Author

Donato Nicolo, C. Bemporad, Fabrizio Cei, M. Grassi, Angela Papa, G. Signorelli, A. Baldini, and R. Pazzi

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Field (physics), Neutron flux, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutron, Activation method, Instrumentation, Beam (structure), Neutron temperature, Thermal neutron flux
Abstract

A precise measurement of the thermal neutron flux (and an approximate measurement of the non-thermal neutron flux), associated with the high intensity stopping μ + beam ( ≈ 1.5 × 10 8 μ + s - 1 ) of the MEG experiment, was studied by measuring the delayed radioactivity of an activated NaI detector. This passive method provides a high sensitivity and allows the neutron flux determination at all locations, even in regions of high magnetic field. We present and discuss the results.

Published
2007

47. Search for neutrinos from the Sun and the Earth with the MACRO detector

Author

L. R. Sulak, F.J. Ronga, E. Katsavounidis, C. Okada, E. Kearns, D. Campana, Paolo Lipari, A. Di Credico, M. Goretti, C. Bloise, S. Kyriazopoulou, G. Giannini, S. L. Mufson, A. Margiotta-Neri, R. Baker, Mn Mazziotta, V. Popa, A. Sanzgiri, P. Fusco, Andrea Carlo Marini, M. Seven, J. Musser, A. Corona, R. C. Webb, C. Orth, N. Giglietto, P. F. Spada, A. Rainò, O. Erriquez, F. Guarino, C. W. Peck, S. Parlati, A. A. Grillo, G. Liu, A. Hawthorne, C. Bemporad, P. Serra-Lugaresi, V. Bisi, Mario Sitta, C. Gustavino, M. Mittelbrunn, R. Fantini, A. M. Baldini, G. Tarle, G. de Cataldo, G. Ludlam, V. Chiarella, P. Bernardini, Kael Hanson, V. Valente, C. Forti, D. G. Michael, C. W. Walter, J. L. Stone, G. Giacomelli, L. Satta, M. Calicchio, M. J. Longo, M. De Vincenzi, J. T. Hong, F. Cafagna, F. Sartogo, S P Mikheyev, P. Monacelli, C. Favuzzi, Halina Bilokon, Donato Nicolo, Marco Grassi, C. Satriano, Np Longley, Fabrizio Cei, G. Auriemma, M. Spinetti, R.M. Heinz, D. Martello, S. Coutu, I. De Mitri, M. G. Castellano, Y. Lu, C. E. Lane, Vincenzo Patera, C. R. Bower, Severino Angelo Maria Bussino, Marco Monteno, J. Reynoldson, G. C. Barbarino, G. Battistoni, E. Iarocci, R. Steinberg, A. Sciubba, L. Patrizii, G. Mandrioli, P. Pistilli, C. De Marzo, R. Nolty, O. Palamara, Eugenio Scapparone, P. Guarnaccia, S. Petrera, G. Osteria, R. Pazzi, B. C. Barish, T. Bosio, T. Montaruli, Maurizio Spurio, A. Surdo, Roberto Bellotti, M. Carboni, R. Antolini, S. Cecchini, Alec Habig, M. Ambrosio, G. Mancarella, Kate Scholberg, L. Miller, D. Levin, R. Liu, N. D. Pignatano, U. Rubizzo, V. Togo, A. Marzari-Chiesa, E. Lamanna, P. Spinelli, H. Dekhissi, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bosio, T, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Fantini, R, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Grillo, A, Guarino, F, Guamaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Neri, Am, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrunn, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spada, Pf, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, R., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, T., Bosio, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, I., De Mitri, M., De Vincenzi, A., Di Credico, O., Erriquez, R., Fantini, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, A., Grillo, Guarino, Fausto, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, N. P., Longley, M. J., Longo, Y., Lu, G., Ludlam, G., Mancarella, G., Mandrioli, A., Margiotta Neri, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrunn, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Seven, M., Sitta, P. F., Spada, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, and R., Webb

Subjects
Physics, Nuclear and High Energy Physics, Muon, Detector, High Energy Physics::Phenomenology, Astrophysics, MACRO, Atomic and Molecular Physics, and Optics, Weakly interacting massive particles, Neutralino, Neutrino, High Energy Physics::Experiment, Macro, Atmospheric neutrino, Underground detector, Earth (classical element)
Abstract

Upward-going muon events collected with the lower half of the MACRO detector have been analyzed in order to search for Weakly Interacting Massive Particles possibly trapped in the core of the Sun and of the Earth. No statistically significant signal could be discriminated over the possible fluctuations of the atmospheric neutrino background. Assuming a particular neutralino model, the explorable neutralino mass region has been considered.

Published
1996

48. A radioactive point-source lattice for calibrating and monitoring the liquid xenon calorimeter of the MEG experiment

Author

F. Sergiampietri, Donato Nicolo, Takehiko Mori, Shinya Yamada, T. Iwamoto, S. Dussoni, G. Signorelli, M. Grassi, Tomiyoshi Haruyama, R. Pazzi, C. Bemporad, Satoshi Mihara, Y. Hisamatsu, A. Baldini, Hajime Nishiguchi, Angela Papa, Wataru Ootani, Ryu Sawada, Fabrizio Cei, Flavio Gatti, and R. Valle

Subjects
Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, business.industry, Point source, Physics::Medical Physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, chemistry.chemical_element, Scintillator, Tungsten, Calorimeter, Nuclear magnetic resonance, Optics, Xenon, chemistry, Calibration, business, Instrumentation
Abstract

Liquid scintillator calorimeters and in particular liquid cryogenic noble gas detectors can be calibrated and monitored by the use of multiple α -sources distributed in the detector sensitive volume. For the MEG experiment we developed a method based on the use of Po 210 and Am 241 point sources deposited on thin ( 100 μ m diameter) gold-plated tungsten wires permanently suspended in the volume and fixed at the surfaces of the large vessel containing the LXe. The method is valuable in measuring the relative QEs of all PMTs surrounding the sensitive LXe volume, in determining the LXe optical properties for the UV scintillation light and in checking the stability of the calorimeter properties during the experiment.

Published
2006

49. Liquid xenon scintillation calorimetry and Xe optical properties

Author

Marco Grassi, F. Cei, T. Doke, Takehiko Mori, Ryu Sawada, Giovanni Signorelli, S. Suzuki, Donato Nicolo, F. Sergiampietri, C. Bemporad, Wataru Ootani, Tomiyoshi Haruyama, K. Ozone, K. Terasawa, Angela Papa, A. M. Baldini, Hajime Nishiguchi, R. Pazzi, and Satoshi Mihara

Subjects
Scintillation, Physics - Instrumentation and Detectors, Materials science, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Physics::Medical Physics, Ionizing particles, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Ultra violet, Instrumentation and Detectors (physics.ins-det), Calorimetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, symbols, Electrical and Electronic Engineering, Rayleigh scattering, Atomic physics, Refractive index, Excitation
Abstract

The optical properties of LXe in the vacuum ultra violet (VUV), determining the performance of a scintillation calorimeter, are discussed in detail. The available data, measured in a wider spectral region from visible to UV light, and in a large range of Xe densities, from gas to liquid, are examined. It is shown that this information can be used for deriving the LXe optical properties in the VUV. A comparison is made with the few direct measurements in LXe for VUV light resulting from the LXe excitation by ionizing particles. A useful relation is obtained which connects the Rayleigh scattering length to the refractive index in LXe., 20 pages, 12 figures

Published
2006

50. Atmospheric neutrino flux measurement using upgoing muons

Author

C. Forti, G. Giacomelli, G. Ludlam, G. Mancarella, S P Mikheyev, Kate Scholberg, R. Baker, R. Liu, L. Miller, D. Levin, M. N. Mazziotta, N. D. Pignatano, C. Okada, S. P. Ahlen, W. A. Worstell, M. Mittelbrunn, Marco Grassi, C. Bloise, A. Corona, A. A. Grillo, P. Fusco, Barry C. Barish, P. Serra-Lugaresi, Andrea Carlo Marini, A. Baldini, A. Hawthorne, A. Rainò, H. Dekhissi, Kael Hanson, Michael J. Longo, Mario Sitta, C. Gustavino, C. Bemporad, C. W. Peck, Marco Monteno, S. L. Nutter, Roberto Bellotti, L. Patrizii, M. Severi, O. Erriquez, V. Togo, G. Mandrioli, A. Marzari-Chiesa, J. L. Stone, L. Satta, F. Sartogo, C. Favuzzi, J. Petrakis, R. Steinberg, P. Green, E. Lamanna, Giuseppe Osteria, J. T. Hong, S. Parlati, Donato Nicolo, C. Orth, C. W. Walter, Np Longley, M. De Vincenzi, S. Petrera, C. E. Lane, S. Cecchini, C. Satriano, G. Auriemma, V. Bisi, Alec Habig, Gregory Tarle, J. Reynoldson, Teresa Montaruli, D. G. Michael, Frederic Jean Ronga, M. G. Castellano, G. C. Barbarino, G. Battistoni, M. Ambrosio, Severino Angelo Maria Bussino, R. Nolty, Edward Diehl, P. Guarnaccia, Eugenio Scapparone, P. Celio, F. Cafagna, R.M. Heinz, V. Chiarella, I. De Mitri, C. R. Bower, E. Kearns, P. Monacelli, C. De Marzo, P. Pistilli, J. A. Musser, E. Iarocci, R. Pazzi, A. Marin, V. Valente, M. Calicchio, A. Di Credico, Halina Bilokon, Maurizio Spurio, A. Surdo, S. Kyriazopoulou, Erik Katsavounidis, S. L. Mufson, V. Popa, Fabrizio Cei, A. Margiotta-Neri, R. C. Webb, A. Sanzgiri, M. Spinetti, F. Guarino, P. Spinelli, G. Liu, D. Martello, S. Coutu, Y. Lu, Paolo Lipari, G. Giannini, N. Giglietto, Vincenzo Patera, A. Sciubba, O. Palamara, R. Antolini, P. Bernardini, G. de Cataldo, M. Carboni, L. R. Sulak, D. Campana, Robert A. Cormack, S., Ahlen, M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, P., Celio, V., Chiarella, R., Cormack, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, E., Diehl, DE MITRI, Ivan, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Grassi, P., Green, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, N. P., Longley, M. J., Longo, Y., Lu, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marin, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrunn, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, S., Nutter, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, J., Petraki, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, W., Worstell, Ahlen S., Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Celio P., Chiarella V., Cormack R., Corona A., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., Diehl E., De Mitri I., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Grassi M., Green P., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Liu G., Liu R., Longley N.P., Longo M.J., Lu Y., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marin A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Mittelbrunn M., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Nutter S., Okada C., Orth C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrakis J., Petrera S., Pignatano N.D., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Valente V., Walter C.W., Webb R., Worstell W., Ahlen, S, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Celio, P, Chiarella, V, Cormack, R, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Diehl, E, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Grassi, M, Green, P, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marin, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrunn, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Nutter, S, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Ranio, A, Reynoldson, J, Ronga, F, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, F, Worstell, W., Barbarino, Giancarlo, and Guarino, Fausto

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Flux, MACRO, Expected value, Gran Sasso, Nuclear physics, Nadir, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract

We report on the first measurement of the flux of upgoing muons resulting from interactions of atmospheric neutrinos in the rock below MACRO. The ratio of the observed to the expected number of events integrated over all nadir angles is 0.73 ± .09 stat. ± .06 sys. ± .12 theor. . The flux of upgoing muons as a function of nadir angle is presented and compared to Monte Carlo expectations. At the 90% confidence level, the data are consistent with no neutrino oscillations or some possible oscillation hypothese with the parameters suggested by the Kamiokande contained-event analysis.

Published
1995

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