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140 results on '"M. J. Longo"'

1. 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

2. Study of the rare hyperon decay

Author: Daniel M. Kaplan, H. K. Park, E. C. Dukes, H. A. Rubin, N. Solomey, Y. Fu, M. J. Longo, P. Zyla, Christopher G. White, C. James, H. R. Gustafson, T. Holmstrom, Y. C. Chen, Juan C. Felix, Kam Biu Luk, A. Chakravorty, J. P. Perroud, S.L. White, C. Durandet, W. Luebke, R. A. Burnstein, K. Clark, D. Rajaram, W. S. Choong, L. C. Lu, J. Volk, G. Gidal, K. S. Nelson, M. Huang, O. Kamaev, T.D. Jones, and C. M. Jenkins
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle decay, Pion, Branching fraction, Hyperon, CP violation, Atomic physics, Omega baryon, Xi baryon, Dimensionless quantity
Abstract: We report a new measurement of the decay Ω − → Ξ − π + π − with 76 events and a first observation of the decay Ω ¯ + → Ξ ¯ + π + π − with 24 events, yielding a combined branching ratio ( 3.74 − 0.56 + 0.67 ) × 10 − 4 . This represents a factor 25 increase in statistics over the best previous measurement. No evidence is seen for CP violation, with B ( Ω − → Ξ − π + π − ) = 4.04 − 0.71 + 0.83 × 10 − 4 and B ( Ω ¯ + → Ξ ¯ + π + π − ) = 3.15 − 0.89 + 1.12 × 10 − 4 . Contrary to theoretical expectation, we see little evidence for the decays Ω − → Ξ 1530 ∗ 0 π − and Ω ¯ + → Ξ ¯ 1530 ∗ 0 π + and place a 90% C.L. upper limit on the combined branching ratio B ( Ω − ( Ω ¯ + ) → Ξ 1530 ∗ 0 ( Ξ ¯ 1530 ∗ 0 ) π ∓ ) 7.0 × 10 − 5 .
Published: 2010

3. 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 pathlength 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

4. 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

5. Observation of parity violation in the Ω−→ΛK− decay

Author: T. Holmstrom, H. K. Park, E. C. Dukes, H. R. Gustafson, D. Rajaram, C. Durandet, L. C. Lu, T.D. Jones, J. Volk, Daniel M. Kaplan, P. Zyla, A. Chakravorty, Juan C. Felix, K. S. Nelson, Kam-Biu Luk, M. Huang, M. J. Longo, K. Clark, G. Gidal, R. A. Burnstein, Y. Fu, H. A. Rubin, W. S. Choong, J. P. Perroud, S.L. White, C. M. Jenkins, Christopher G. White, Y. C. Chen, W. Luebke, and C. James
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Parity (physics), Fermilab
Abstract: The α decay parameter in the process Ω − → Λ K − has been measured from a sample of 4.50 million unpolarized Ω − decays recorded by the HyperCP (E871) experiment at Fermilab and found to be [ 1.78 ± 0.19 ( stat ) ± 0.16 ( syst ) ] × 10 −2 . This is the first unambiguous evidence for a nonzero α decay parameter, and hence parity violation, in the Ω − → Λ K − decay.
Published: 2005

6. 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

7. Search for CP violation in hyperon decays

Author: Julián Félix, H. K. Park, S.L. White, B. Turko, T. Jones, Daniel M. Kaplan, N. Leros, W. Luebke, M. J. Longo, M. Jenkins, H. A. Rubin, K. Clark, K. S. Nelson, Kam-Biu Luk, Piotr Zyla, M. Huang, W. S. Choong, G. Gidal, N. Solomey, J. Volk, T. Holmstrom, P. Gu, A. Chakrovorty, L. C. Lu, Christopher G. White, C. Ho, Y. C. Chen, Aw Chan, H. R. Gustafson, F. Lopez, R. A. Burnstein, Yagmur Torun, E.C. Dukes, P. Zyla, J. P. Perroud, P. K. Teng, Leon M. Lederman, C. James, D. Rajaram, Y. Fu, and C. Durandet
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Hadron, Hyperon, Elementary particle, Rest frame, Lambda, Asymmetry, Atomic and Molecular Physics, and Optics, Nuclear physics, CP violation, Nucleon, media_common
Abstract: Direct CP violation in nonleptonic hyperon decays can be established by comparing the decays of hyperons and anti-hyperons. For Ξ decay to Λπ followed by Λ to pπ, the proton distribution in the rest frame of Lambda is governed by the product of the decay parameters αΞαΛ. The asymmetry ΛΞΛ, proportional to the difference of αΞαΛ of the hyperon and anti-hyperon decays, vanishes if CP is conserved. We report on an analysis of a fraction of 1997 and 1999 data collected by the HyperCP (E871) collaboration during the fixed-target runs at Fermilab. The preliminary measurement of the assymmetry is AΞΛ = [−7±12(stat)±6.2(sys)] × 10−4, an order of magnitude better than the present limit.
Published: 2003

8. Search for DirectCPViolation in Nonleptonic Decays of ChargedΞandΛHyperons

Author: C. James, G. Guglielmo, R. Rameika, H. T. Diehl, K. A. Johns, Gordon Thomson, S. Teige, Ken Heller, Pei-Ming Ho, M. J. Longo, Kam-Biu Luk, Y. Zou, and J. Duryea
Subjects: Physics, Particle physics, media_common.quotation_subject, High Energy Physics::Phenomenology, Hyperon, General Physics and Astronomy, Lambda baryon, Lambda, Asymmetry, Xi baryon, Nuclear physics, CP violation, High Energy Physics::Experiment, Nuclear Experiment, media_common
Abstract: A search for direct CP violation in the nonleptonic decays of hyperons has been performed. In comparing the product of the decay parameters, alpha(Xi)alpha(Lambda), in terms of an asymmetry parameter, A(XiLambda), between hyperons and antihyperons in the charged Xi-->Lambdapi and Lambda-->ppi decay sequence, we found no evidence of direct CP violation. The parameter A(XiLambda) was measured to be 0.012+/-0.014.
Published: 2000

9. Search for direct CP violation in Λ and Ξ hyperon decays

Author: Kam Biu Luk, J. P. Perroud, C.S Yu, Bojan T. Turko, N. Leros, Z. Kou, M. Crisler, F. Lopez, K. S. Nelson, R. A. Burnstein, M. Huang, N. Saleh, Modesto Sosa, E. C. Dukes, Christopher G. White, Woon-Seng Choong, M. Carmack, Y. C. Chen, A. Chakravorty, J. Volk, Daniel M. Kaplan, S.L. White, M. J. Longo, W. Luebke, C. Durandet, L.M. Lederman, Z. Yu, Juan C. Felix, D. Rajaram, C. Ho, Aw Chan, H. A. Rubin, H. R. Gustafson, G. Gidal, T. Holmstrom, G. Lopez, C. James, J.P Sheng, K. Clark, J. Drapala, M. Jenkins, P. K. Teng, P. Zyla, and V. Papavassiliou
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, Particle physics, media_common.quotation_subject, Hyperon, Lambda baryon, Helicity, Asymmetry, Atomic and Molecular Physics, and Optics, Xi baryon, Nuclear physics, Particle decay, CP violation, High Energy Physics::Experiment, media_common
Abstract: A sensitive search for direct CP violation in Ξ− (Ξ+) and Λ (Λ) decays is underway at FNAL. Experiment E871 (HyperCP) intends to perform a precision measurement of the angular distribution of protons (anti-protons) with respect to the helicity axis in the rest frame of the Λ (Λ). The slopes of these distributions give the decay parameters αΞαΛ and αΞαΛ. An asymmetry parameter A in terms of these decay parameters has been defined for which a non-zero value would be unambiguous evidence for direct CP violation. Theoretical predictions for A range from no asymmetry up to ∼ 10−3. HyperCP expects to measure A with an uncertainty of ∼ 2 × 10−4.
Published: 1999

10. 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

11. 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

12. 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

13. 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

14. Search for stellar gravitational collapses with the MACRO detector

Author: 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, BUSSINO, Severino Angelo Maria, F. CAFAGNA, D. CAMPANA, M. CARBONI, S. CECCHINI, F. CEI, V. CHIARELLA, B. C. CHOUDHARY, S. COUTU, M. COZZI, G. DE CATALDO, H. DEKHISSI, C. DE MARZO, I. DE MITRI, J. DERKAOUI, A. DI CREDICO, C. FAVUZZI, 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, 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, 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., 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, Bussino, Severino Angelo Maria, F., Cafagna, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, 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, C., Favuzzi, 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, 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, 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

15. 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

16. The Primary cosmic ray composition between 1015 and 1016 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

17. Emergence of jet dominance inγpinteractions at fixed-target energies

Author: G. P. Thomas, G. Morrow, M. D. Corcoran, H. R. Gustafson, P. Birmingham, C. Halli, P. H. Kasper, Yasar Onel, John Michael Marraffino, J. W. Waters, D. Alton, N. Akchurin, W. L. Davis, J. McPherson, D.L. Naples, Don Lincoln, M. M. Traynor, H. Holmgren, Q. Zhu, Michael S. Webster, G. S. Mutchler, M. J. Longo, and C. C. Chang
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Hadron, Solid angle, High Energy Physics::Experiment, Production (computer science), Fermilab, Inelastic scattering, Jet (particle physics), Event (particle physics), Energy (signal processing)
Abstract: In Fermilab experiment E683 we have used a large solid angle calorimeter to study the production of hadronic events with large transverse energy in $\ensuremath{\gamma}p$ and $\ensuremath{\pi}p$ collisions at center-of-mass energies from 20 to 25 GeV. We observe a sudden shift in $\ensuremath{\gamma}p$ event topology with increasing transverse energy, indicative of the emergence of jet dominance. This is the first observation of such a shift in event topology in fixed-target interactions. $\ensuremath{\pi}p$ interactions in the same kinematic region and under identical triggering conditions exhibit only a slight shift in event topology.
Published: 1997

18. Analysis of charged-particle–photon correlations in hadronic multiparticle production

Author: Michael Martens, A. Abashian, W. L. Davis, J. Streets, Lawrence W. Jones, Claude Andre Pruneau, K. Del Signore, B. Hanna, W. D. Walker, E. Kangas, T. C. Brooks, James D. Bjorken, Matthew G. Knepley, H. R. Gustafson, R. C. Ball, Kenneth L. Kowalski, M. E. Convery, N. Morgan, T. L. Jenkins, C. Taylor, S. H. Oh, P. L. Colestock, and M. J. Longo
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Nuclear Theory, Hadron, Tevatron, Observable, Minimax, Charged particle, Nuclear physics, Pion, High Energy Physics::Experiment, Fermilab
Abstract: In order to analyze data on joint charged-particle/photon distributions from an experimental search (T-864, MiniMax) for disoriented chiral condensate (DCC) at the Fermilab Tevatron collider, we have identified robust observables, ratios of normalized bivariate factorial moments, with many desirable properties. These include insensitivity to many efficiency corrections and the details of the modeling of the primary pion production, and sensitivity to the production of DCC, as opposed to the generic, binomial-distribution partition of pions into charged and neutral species. The relevant formalism is developed and tested in Monte-Carlo simulations of the MiniMax experimental conditions.
Published: 1997

19. Atmospheric neutrino oscillations from upward through going muon multiple scattering in MACRO

Author: 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. 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, C. FAVUZZI, 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. KATSAVOUNIDIS, I. KATSAVOUNIDIS, E. KEARNS, H. KIM, A. KUMAR, S. KYRIAZOPOULOU, E. LAMANNA, CHARLES E. 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, D. G. MICHAEL, S. MIKHEYEV, P. MONACELLI, T. MONTARULI, M. MONTENO, STUART L. MUFSON, J. MUSSER, D. NICOLO, R. NOLTY, C. ORTH, G. OSTERIA, O. PALAMARA, L. PATRIZII, R. PAZZI, C. W. PECK, L. PERRONE, S. PETRERA, 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, R. WEBB, DE VINCENZI, Mario, 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., 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, C., Favuzzi, 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., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, A., Kumar, S., Kyriazopoulou, E., Lamanna, CHARLES E., 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, D. G., Michael, S., Mikheyev, P., Monacelli, T., Montaruli, M., Monteno, STUART L., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Orth, G., Osteria, O., Palamara, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, 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
Published: 2003

20. Polarization ofΞ−andΩ−hyperons produced from neutral beams

Author: D. M. Woods, G. Guglielmo, R. Rameika, Y. T. Gao, K. A. Johns, P. M. Border, M. J. Longo, D. P. Ciampa, Ken Heller, and N. B. Wallace
Subjects: Physics, Nuclear and High Energy Physics, High energy, Hyperon, Atomic physics, Omega baryon, Polarization (waves), Neutral particle, Omega, Beam (structure), Xi baryon
Abstract: We have studied the polarization of {Xi}{sup {minus}} and {Omega}{sup {minus}} hyperons produced by high energy neutral particle beams. An unpolarized neutral beam striking a target at {plus_minus}1.8 mrad produced 1.4 {times}10{sup 7}{Xi}{sup {minus}}{close_quote}s with an average momentum of 395 GeV/{ital c} which were unpolarized, within a sensitivity limit of 0.007, and 2.2 {times}10{sup 5} {Omega}{sup {minus}}{close_quote}s with a polarization of +0.042{plus_minus}0.007 at an average momentum of 374 GeV/{ital c}. A polarized neutral beam striking a target at 0.0 mrad produced 7.1 {times}10{sup 5}{Xi}{sup {minus}}{close_quote}s which had a polarization of {minus}0.118{plus_minus}0.004 at an average momentum of 393 GeV/{ital c} and 1.8 {times}10{sup 4} {Omega}{sup {minus}}{close_quote}s with a polarization of {minus}0.069{plus_minus}0.023 at an average momentum of 394 GeV/{ital c}. The polarized neutral beam measurement is in good agreement with a previous measurement. The unpolarized neutral beam results are not understood in the context of the current models of hyperon polarization. {copyright} {ital 1996 The American Physical Society.}
Published: 1996

21. 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

22. Precision Measurement of theΩ−Magnetic Moment

Author: R. Rameika, D. M. Woods, M. J. Longo, K. A. Johns, D. P. Ciampa, P.M. Border, G. Guglielmo, N. B. Wallace, Y. T. Gao, and Ken Heller
Subjects: Physics, Crystallography, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Magnetic moment, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Gyromagnetic ratio, Quark model, TheoryofComputation_GENERAL, General Physics and Astronomy, Omega baryon, Lambda baryon, Omega, MathematicsofComputing_DISCRETEMATHEMATICS
Abstract: Using a sample of 2.35{times}10{sup 5} polarized {Omega}{sup {minus}}{r_arrow}{Lambda}{ital K}{sup {minus}} decays, we have measured the {Omega}{sup {minus}} magnetic moment to be {mu}{sub {Omega}{sup {minus}}}=({minus}2.024{plus_minus}0.056){mu}{sub {ital N}}.
Published: 1995

23. Measurement of the amplitude of the CP conserving decay KS0 → π+π−π0

Author: A. Caracappa, K. Thorne, H. T. Diehl, S. Teige, K. Krueger, S. S. Myung, N. Grossman, Ken Heller, Yanfang Zhou, Andrew Beretvas, M. J. Longo, P. Border, Gordon Thomson, and Thomas J. Devlin
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Amplitude, Spectrometer, Branching fraction, media_common.quotation_subject, Phase (waves), Charge (physics), Fermilab, Asymmetry, media_common
Abstract: We measured the amplitude for the CP-symmetry-conserving decay KS0 → π+π−π0 in an experiment at Fermilab. This decay manifests itself as a time dependent charge asymmetry in the inteference between the coherent KS and KL decays. We collected π+π−π0 decays between 0.6 and 7.6 KS Lifetimes from the production target using a detector that consisted of a magnetic spectrometer and a lead glass electromagnetic. KS0 → π+π− decays that were collected simultaneously were used for normalization. The ratio p+−0 of the CP-conserving KS amplitude to the KL amplitude is found to be: •p+−0• = 0.035+0.019−0.011 (stat.) ±0.004 (syst.), with a phase Op=−59°±48°. This yields a branching ratio of (3.9 +5.4 −1.8 ( stat. ) +0.9 −0.7 ( syst. )) × 10 −7 .
Published: 1994

24. Search for CP violation in the decay KS0 → π+π−π0

Author: S. Teige, K. Thorne, K. Krueger, M. J. Longo, S. S. Myung, H. T. Diehl, N. Grossman, Ken Heller, Andrew Beretvas, A. Caracappa, P. Border, T. Devlin, Y. Zou, and Gordon Thomson
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Electromagnetic calorimeter, CP violation, Elementary particle, Fermilab
Abstract: We performed an experiment at Fermilab to search for CP symmetry nonconservation in the decay K S 0 → π + π − π 0 . Todate CP violation has only been observed in K L 0 decays. We collected π + π − π 0 decays between 0.6 and 7.6 K S lifetimesfrom the production target, and searched for interference between the coherent K S and K L decays. Our detector consisted of amagnetic spectrometer and a lead glass electromagnetic calorimeter. A double-beam, double-target method was used to controlsystematic uncertainties. K S 0 → π + π − decays that were collected simultaneously provided an important normalization. Theresult is Im( η +-0) = −0.015±0.017 (stat.) ± 0.025 (syst.) with the theoretical constraint Re( η +-0) = Re( ϵ ).
Published: 1994

25. Adependence of photoproduced dijets

Author: Q. Zhu, G. P. Thomas, G. Morrow, M. M. Traynor, M. J. Longo, Corcoran, Nural Akchurin, H. Holmgren, Don Lincoln, S. Cihangir, W. L. Davis, H. Breuer, J. McPherson, G. S. Mutchler, John Michael Marraffino, Yasar Onel, H. R. Gustafson, H.E. Miettinen, P. H. Kasper, D.L. Naples, J. W. Waters, J. P. Xu, Michael S. Webster, P. Birmingham, and C. C. Chang
Subjects: Nuclear physics, Physics, Nuclear reaction, Particle physics, Computer Science::Information Retrieval, Transverse momentum, General Physics and Astronomy, Photon beams, High Energy Physics::Experiment, Photon beam, Nuclear Experiment
Abstract: We present a measurement of the [ital A] dependence of [ital k][sub [ital T][phi]], the out-of-plane component of the dijet transverse momentum, in dijet events produced with a real photon beam. We also present the same measurement for dijets produced from pion-nucleus collisions in our detector. Both data sets are taken at a mean [radical][ital s] of 21 GeV in the [ital p][sub [ital T]] range 3--7 GeV/[ital c]. A clear [ital A] dependence of comparable magnitude is seen in both processes. The energy dependence of the nuclear behavior is also extracted.
Published: 1994

26. Observation of jet production by real photons

Author: J. P. Xu, Michael S. Webster, John Michael Marraffino, Nural Akchurin, H.E. Miettinen, P. Birmingham, G. P. Thomas, C. C. Chang, Q. Zhu, Salahuddin Ahmad, Yasar Onel, J. W. Waters, G. S. Mutchler, G. Morrow, Don Lincoln, D.L. Naples, J. McPherson, S. Cihangir, H. D. Holmgren, H. Breuer, M. M. Traynor, M. J. Longo, D. L. Adams, J. Skeens, W. L. Davis, M. D. Corcoran, H. R. Gustafson, P. H. Kasper, and J. W. Kruk
Subjects: Quantum chromodynamics, Physics, Nuclear physics, Particle physics, Photon, Monte Carlo method, General Physics and Astronomy, Perturbative QCD, High Energy Physics::Experiment, Jet (particle physics), Kinetic energy, Event (particle physics), Calorimeter
Abstract: Interactions of high energy photons on a hyrogen target have been studied using a large acceptance segmented calorimeter. The event topology clearly shows the production of dijet final states as predicted by perturbative QCD. The energy flow in the photon (forward) direction is compared both to Monte Carlo expectations and to that produced in [pi][ital p] interactions.
Published: 1994

27. 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

28. Polarization ofΩ−hyperons produced in 800 GeV proton-beryllium collisions

Author: G. Guglielmo, H. T. Diehl, K. Thorne, A. Nguyen, R.A. Rameika, Gordon Thomson, K. Johns, S. Teige, K. B. Luk, C. James, J. Duryea, Y. Zou, P.M. Ho, M. J. Longo, and Ken Heller
Subjects: Nuclear physics, Physics, Nuclear reaction, Hadron, Hyperon, General Physics and Astronomy, Atomic physics, Polarization (waves), Omega baryon, Lambda, Isotopes of beryllium, Omega
Abstract: The polarization of 103 211 [Omega][sup [minus]] hyperons produced in 800 GeV proton-beryllium inclusive reactions has been measured. Between 0.3[lt][ital x][sub [ital F]][lt]0.7 and 0.5[lt][ital p][sub [ital t]][lt]1.3 GeV/[ital c], the [Omega][sup [minus]] polarization is found to be consistent with zero, with a mean value of [minus]0.01[plus minus]0.01 at [l angle][ital x][sub [ital F]][r angle]=0.5 and [l angle][ital p][sub [ital t]][r angle]=0.95 GeV/[ital c]. This behavior is similar to that of [bar [Lambda]][sup 0], which also does not have any quarks in common with the incident proton, but is different from [bar [Xi]][sup +], which is significantly polarized in the same kinematic region.
Published: 1993

29. 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

30. Measurement of the polarization and magnetic moment ofΞ¯+antihyperons produced by 800-GeV/cprotons

Author: Gordon Thomson, P.M. Ho, S. Teige, Kam Biu Luk, G. Guglielmo, J. Duryea, A. Nguyen, K. Johns, H. T. Diehl, C. James, R.A. Rameika, Y. Zou, Ken Heller, and M. J. Longo
Subjects: Physics, Baryon, Antiparticle, Particle physics, Magnetic moment, Hadron, Hyperon, Elementary particle, Polarization (waves), Xi baryon
Abstract: The polarization of ${\overline{\ensuremath{\Xi}}}^{+}$ hyperons produced by 800-GeV/c protons in the inclusive reaction $p+\mathrm{Be}\ensuremath{\rightarrow}{\overline{\ensuremath{\Xi}}}^{+}+X$ has been measured using a sample of $70000{\overline{\ensuremath{\Xi}}}^{+}$ decays. The average polarization of the ${\overline{\ensuremath{\Xi}}}^{+}$, at a mean ${x}_{F}=0.39$ and ${p}_{t}=0.76$ GeV/c, is -0.097\ifmmode\pm\else\textpm\fi{}0.012\ifmmode\pm\else\textpm\fi{}0.009, compared to -0.102\ifmmode\pm\else\textpm\fi{}0.012\ifmmode\pm\else\textpm\fi{}0.010 for the ${\ensuremath{\Xi}}^{\ensuremath{-}}$. The large polarization found for the ${\overline{\ensuremath{\Xi}}}^{+}$ is not expected in any model for polarization of inclusively produced hyperons. The magnetic moment of the ${\overline{\ensuremath{\Xi}}}^{+}$ was measured to be 0.657\ifmmode\pm\else\textpm\fi{}0.028\ifmmode\pm\else\textpm\fi{}0.020 nuclear magnetons (${\ensuremath{\mu}}_{N}$), compared to $(\ensuremath{-}0.674\ifmmode\pm\else\textpm\fi{}0.021\ifmmode\pm\else\textpm\fi{}0.020){\ensuremath{\mu}}_{N}$ for the ${\ensuremath{\Xi}}^{\ensuremath{-}}$, in good agreement with $\mathrm{CPT}$ invariance.
Published: 1991

31. Polarization ofΞ−hyperons produced by 800-GeV protons

Author: J. Duryea, C. James, K. Johns, K. Thorne, K. B. Luk, G. Guglielmo, S. Teige, H. T. Diehl, M. Shupe, Gordon Thomson, R.A. Rameika, P.M. Ho, M. J. Longo, and Ken Heller
Subjects: Nuclear physics, Physics, High energy, Proton, Hyperon, General Physics and Astronomy, Polarization (waves)
Abstract: The polarization P ≡ - of ≡ - hyperons produced by 800-GeV protons has been measured for x F from 0.3 to 0.7 and p T from 0.5 to 1.5 GeV/c. P ≡ - has a p T dependence similar to that of the A but has a different x F behavior. Also, an energy dependence of P ≡ - has been observed
Published: 1991

32. Production polarization and magnetic moment of Ξ¯+antihyperons produced by 800-GeV/cprotons

Author: M. J. Longo, H. T. Diehl, C. James, S. Teige, R. A. Rameika, Gordon Thomson, Ken Heller, K. B. Luk, A. Nguyen, J. Duryea, G. Guglielmo, K. Johns, Y. Zou, and P.M. Ho
Subjects: Nuclear reaction, Physics, Antiparticle, Particle physics, Magnetic moment, Hadron, Hyperon, General Physics and Astronomy, Elementary particle, Nuclear magneton, Xi baryon
Abstract: The polarization of \ensuremath{\Xi}\ifmmode\bar\else\textasciimacron\fi{} $^{+}$ hyperons produced by 800-GeV/c protons in the inclusive reaction p+Be\ensuremath{\rightarrow}\ensuremath{\Xi}\ifmmode\bar\else\textasciimacron\fi{} $^{+}$+X has been measured. The average polarization of the \ensuremath{\Xi}\ifmmode\bar\else\textasciimacron\fi{} $^{+}$, at a mean ${\mathit{x}}_{\mathit{F}}$=0.39 and ${\mathit{p}}_{\mathit{t}}$=0.76 GeV/c, is -0.097\ifmmode\pm\else\textpm\fi{}0.012\ifmmode\pm\else\textpm\fi{}0.009. The magnetic moment of the \ensuremath{\Xi}\ifmmode\bar\else\textasciimacron\fi{} $^{+}$ is 0.657\ifmmode\pm\else\textpm\fi{}0.028\ifmmode\pm\else\textpm\fi{}0.020 nuclear magneton.
Published: 1990

33. 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

34. 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

35. 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

36. 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

37. Measurement of the Asymmetry in the DecayΩ¯+→Λ¯K+→p¯π+K+

Author: T. Holmstrom, H. R. Gustafson, H. K. Park, Y. Fu, C. Durandet, K. Clark, C. M. Jenkins, H. A. Rubin, E.C. Dukes, K. S. Nelson, Kam-Biu Luk, P. Zyla, R. A. Burnstein, M. Huang, Julián Félix, Christopher G. White, J. P. Perroud, M. J. Longo, D. Rajaram, S.L. White, C. James, G. Gidal, A. Chakravorty, Y. C. Chen, Woon-Seng Choong, J. Volk, Daniel M. Kaplan, T.D. Jones, W. Luebke, and L. C. Lu
Subjects: Physics, Particle physics, media_common.quotation_subject, High Energy Physics::Phenomenology, Hyperon, General Physics and Astronomy, Lambda, Omega, Asymmetry, Crystallography, Particle decay, Angular distribution, CP violation, High Energy Physics::Experiment, media_common, Bar (unit)
Abstract: The asymmetry in the {bar p} angular distribution in the sequential decay {bar {Omega}}{sup +} {yields} {bar {Lambda}}K{sup +} {yields} {bar p}{pi}{sup +}K{sup +} has been measured to be {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} = [+1.16{+-}0.18(stat){+-}0.17(syst)]x10{sup -2} using 1.89x10{sup 6} unpolarized {bar {Omega}}{sup +} decays recorded by the Hyper CP (E871) experiment at Fermilab. Using the known value of {alpha}{sub {Lambda}}, and assuming that {bar {alpha}}{sub {Lambda}} = -{alpha}{sub {Lambda}}, {bar {alpha}}{sub {Omega}} = [-1.81{+-}0.28(stat){+-}0.26(syst)]x10{sup -2}. A comparison between this measurement of {bar {alpha}}{sub {Omega}}{bar {alpha}}{sub {Lambda}} and recent measurements of {alpha}{sub {Omega}}{alpha}{sub {Lambda}} made by HyperCP shows no evidence of a violation of CP symmetry.
Published: 2006

38. Measurement of the asymmetry in the decay Omega+--LamdaKappa+--rhopi+Kappa+

Author: L C, Lu, R A, Burnstein, A, Chakravorty, Y C, Chen, W-S, Choong, K, Clark, E C, Dukes, C, Durandet, J, Felix, Y, Fu, G, Gidal, H R, Gustafson, T, Holmstrom, M, Huang, C, James, C M, Jenkins, T D, Jones, D M, Kaplan, M J, Longo, W, Luebke, K-B, Luk, K S, Nelson, H K, Park, J-P, Perroud, D, Rajaram, H A, Rubin, J, Volk, C G, White, S L, White, and P, Zyla
Abstract: The asymmetry in the rho angular distribution in the sequential decay Omega+--LamdaKappa+--rhopi+Kappa+. has been measured to be alphaOmegaalphaLamda=[+1.16+/-0.18(stat)+/-0.17(syst)]x10(-2) using 1.89x10(6) unpolarized Omega+ decays recorded by the HyperCP (E871) experiment at Fermilab. Using the known value of alphaLamda, and assuming that alphaLamda=-alphaLamda, alphaOmega=[-1.81+/-0.28(stat)+/-0.26(syst)]x10(-2). A comparison between this measurement of alphaOmegaalphaLamda and recent measurements of alphaOmegaalphaLamda made by HyperCP shows no evidence of a violation of CP symmetry.
Published: 2006

39. Measurement of theαasymmetry parameter for theΩ−→ΛK−Decay

Author: N. Leros, E.C. Dukes, S.L. White, H. K. Park, P. Gu, J. P. Perroud, M. J. Longo, R. A. Burnstein, D. Rajaram, Daniel M. Kaplan, J. Volk, Leon M. Lederman, C. James, A. Chakravorty, G. Gidal, K. Clark, T. Holmstrom, W. S. Choong, W. Luebke, P. K. Teng, L. C. Lu, Christopher G. White, P. Zyla, Y. C. Chen, F. Lopez, C. Durandet, K. S. Nelson, Kam-Biu Luk, M. Huang, Julián Félix, C. M. Jenkins, C. Ho, Aw Chan, H. R. Gustafson, and H. A. Rubin
Subjects: Physics, Combinatorics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Lambda baryon, Omega, Asymmetry, media_common
Abstract: We have measured the $\ensuremath{\alpha}$ parameter of the ${\ensuremath{\Omega}}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Lambda}{K}^{\ensuremath{-}}$ decay using data collected with the HyperCP spectrometer during the 1997 fixed-target run at Fermilab. Analyzing a sample of $0.96\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${\ensuremath{\Omega}}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Lambda}{K}^{\ensuremath{-}}$, $\ensuremath{\Lambda}\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{\ensuremath{-}}$ decays, we obtain ${\ensuremath{\alpha}}_{\ensuremath{\Omega}}{\ensuremath{\alpha}}_{\ensuremath{\Lambda}}=[1.33\ifmmode\pm\else\textpm\fi{}0.33(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}0.52(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}$. With the accepted value of ${\ensuremath{\alpha}}_{\ensuremath{\Lambda}}$, ${\ensuremath{\alpha}}_{\ensuremath{\Omega}}$ is found to be $[2.07\ifmmode\pm\else\textpm\fi{}0.51(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}0.81(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}$.
Published: 2005

40. Evidence for the DecayΣ+→pμ+μ−

Author: J. P. Perroud, R. A. Burnstein, N. Leros, Christopher G. White, T. Holmstrom, H. K. Park, A. Chakravorty, Y. C. Chen, Woon-Seng Choong, W. Luebke, Daniel M. Kaplan, J. Volk, Y. Fu, K. S. Nelson, Kam-Biu Luk, T. Jones, S.L. White, Leon M. Lederman, M. Huang, C. James, Julián Félix, G. Gidal, M. J. Longo, L. C. Lu, F. Lopez, H. R. Gustafson, C. Durandet, H. A. Rubin, C. M. Jenkins, E.C. Dukes, K. Clark, D. Rajaram, and P. Zyla
Subjects: Nuclear physics, Physics, Branching fraction, Hyperon, General Physics and Astronomy, Narrow range, Intermediate state, Fermilab, Sigma baryon
Abstract: We report the first evidence for the decay ∑+ → pμ+ μ- from data taken by the HyperCP (E871) experiment at Fermilab. Based on three observed events, the branching ratio is B(∑+ → pμ+ μ-) = [8.6 -5.4 +6.6(stat) ± 5.5(syst)] × 10 -8. The narrow range of dimuon masses may indicate that the decay proceeds via a neutral intermediate state, ∑+ rarr; pp0, p0 → μ+ μ- with a P0 mass of 214.3 ± 0.5 MeV/c 2 and branching ratio B(∑+ rarr; pp 0, p0 → μ+ μ-) = [3.1-1.9 -2.4(stat) ± 1.5(syst)] × 10 -8. © 2005 The American Physical Society.
Published: 2005

41. MUON ASTROPHYSICS WITH THE MACRO DETECTOR

Author: G. Giannini, C. W. Peck, C. W. Walter, N. Giglietto, F.J. Ronga, V. Valente, S. P. Ahlen, J. Reynoldson, A. Rainò, M. Calicchio, C. E. Lane, Halina Bilokon, C. Bemporad, J. Steele, G. Tarle, Fabrizio Cei, Erik Katsavounidis, V. Togo, Paolo Lipari, Edward Diehl, S. L. Mufson, G. Ludlam, P. Serra Lugaresi, D. G. Michael, G. C. Barbarino, A. Margiotta-Neri, M. Spinetti, A. Corona, P. Green, R. Antolini, Marco Monteno, A. Sanzgiri, Vincenzo Patera, G. Battistoni, G. de Cataldo, M. N. Mazziotta, Eugenio Scapparone, E. Vilela, Kael Hanson, E. Iarocci, M. Severi, A. Sciubba, V. Chiarella, R.M. Heinz, S. Cecchini, O. Palamara, B. C. Barish, C. Okada, F. Cafagna, R. Nolty, E. Kearns, P. Guarnaccia, L. Patrizii, Y. Lu, O. Erriquez, G. Mandrioli, R. Baker, S. Kyeizopoulou, Roberto Bellotti, J. L. Stone, A. Di Credico, R. Steinberg, M. Ambrosio, S. Coutu, Donato Nicolo, Alec Habig, P. Bernardini, R. C. Webb, E. Lamanna, P. Spinelli, C. Bloise, Marco Grassi, P. Fusco, M. Carboni, Andrea Carlo Marini, P. Monacelli, Severino Angelo Maria Bussino, F. Guarino, Giuseppe Osteria, G. Liu, S. Parlati, M. J. Longo, V. Bisi, C. R. Bower, D. Campana, G. Mancarella, L. Miller, D. Martello, D. Levin, J. T. Hong, C. De Marzo, Kate Scholberg, J. A. Musser, P. Pistilli, R. Pazzi, A. Marin, Maurizio Spurio, A. Surdo, M. De Vincenzi, A. A. Grillo, R. Liu, N. D. Pignatano, G. Auriemma, Mario Sitta, C. Gustavino, J. Petrakis, A. Baldini, A. Marzari Chiesa, M. Mittelbrun, B. Pavesi, C. Favuzzi, H. Dekhissi, L. Satta, C. Satriano, L. R. Sulak, S. Petrera, W. A. Worstell, C. Forti, G. Giacomelli, S P Mikheyev, Bernardini, P, Ahlen, S, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Devincenzi, M, Dicredico, A, Diehl, E, 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, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marin, A, Marini, A, Martello, D, Chiesa, Am, Mazziotta, Mn, Michael, Dg, Mikheyev, Sp, Miller, L, Mittelbrun, M, Monacelli, P, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pavesi, B, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, Nd, Pistilli, P, Raino, A, Reynoldson, J, Ronga, F, Sanzgiri, A, 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, Vilela, E, Walter, Cw, Webb, R, Worstell, W., S., Ahlen, 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, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, M., De Vincenzi, A., Di Credico, E., Diehl, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Grassi, P., Green, A., Grillo, Guarino, Fausto, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyeizopoulou, E., Lamanna, C., Lane, D., Levin, P., Lipari, G., Liu, R., Liu, M. J., Longo, Y., Lu, G., Ludlam, G., Mancarella, G., Mandrioli, A., Margiotta Neri, A., Marin, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrun, P., Monacelli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, B., Pavesi, R., Pazzi, C. W., Peck, J., Petraki, S., Petrera, N. D., Pignatano, P., Pistilli, A., Rainó, J., Reynoldson, F., Ronga, A., Sanzgiri, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, J., Steele, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, E., Vilela, C. W., Walter, R., Webb, and W., Worstell
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Muon collider, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Cosmic ray, Macro, Atomic and Molecular Physics, and Optics
Abstract: Muon events collected with the streamer tube system of MACRO have been used to study the vertical muon intensity and to search for astrophysical point sources. New upper limits on the muon fluxes coming from source candidates have been obtained. The μ pair distance distribution and multimuon rates are presented and compared with Monte Carlo predictions for different primary cosmic rays composition models.
Published: 1994

42. Study of the primary cosmic ray composition around the knee of the energy spectrum

Author: C. W. Peck, G. Giannini, M. Goretti, F. Guarino, G. Liu, R. Baker, A. Marzari Chiesa, A. Corona, N. Giglietto, L. Patrizii, V. Valente, O. Erriquez, M. Severi, Fabrizio Cei, G. Mandrioli, Vincenzo Patera, M. Aglietta, M. Spinetti, J. L. Stone, B. Pavesi, M. Mittelbrun, V. Bisi, C. DeMarzo, C. R. Bower, L. Satta, A. Sciubba, G.C. Trinchero, M. Ambrosio, D. Martello, O. Palamara, Pietro Antonioli, C. Melagrana, C. Bloise, Erik Katsavounidis, B. C. Barish, P. Fusco, P. Serra Lugaresi, M. E. Bertaina, J. A. Musser, D. Ficenec, C. W. Walter, Steven Ahlen, E. Kearns, H. Dekhissi, S. L. Mufson, A. Margiotta-Neri, G. Ludlam, Andrea Carlo Marini, F. Sartogo, M. Iacovacci, P. Pistilli, D. Campana, J. Petrakis, S. Klein, D. G. Michael, P. Bernardini, S. L. Nutter, A. Rainò, C. Morello, G. Cini, M. N. Mazziotta, C. E. Lane, Giuseppe Osteria, A. Sanzgiri, F. Cafagna, G. Mancarella, C. Bemporad, R. Pazzi, J. Reynoldson, Teresa Montaruli, S. Parlati, M. De Mitri, A. Marin, A. Di Credico, Robert A. Cormack, Lawrence Sulak, Kate Scholberg, Paolo Lipari, S. Kyriazopoulou, M. Carboni, A. Campos Fauth, Marco Grassi, Marco Monteno, O. Saavedra, R. Liu, R. C. Webb, C. Okada, Bruno Alessandro, R. Steinberg, Kael Hanson, Maurizio Spurio, A. Surdo, S. Vernetto, L. Bergamasco, G. Battistoni, Edward Diehl, G.L. Sanzani, E. Iarocci, P. Green, R. Nolty, P. Guarnaccia, C. Satriano, S. Cecchini, P. Vallania, P.L. Ghia, Alec Habig, M. Calicchio, Roberto Bellotti, R.M. Heinz, S. Petrera, Halina Bilokon, G. Navarra, G. Mannocchi, G. Di Sciascio, Donato Nicolo, L. Miller, D. Levin, Severino Angelo Maria Bussino, Y. Lu, W. Fulgione, N. D. Pignatano, E. Lamanna, B. D'Ettorre Piazzoli, J. Steele, M. J. Longo, Carlotta Castagnoli, A. Baldini, P. Spinelli, F. Arneodo, G. C. Barbarino, R. Antolini, A. Chiavassa, Eugenio Scapparone, L. Riccati, J. T. Hong, M. De Vincenzi, V. Togo, G. Auriemma, Gregory Tarle, P. Matteuzzi, G. DeCataldo, Mario Sitta, C. Gustavino, A. Castellina, C. Favuzzi, A. A. Grillo, C. Cattadori, V. Chiarella, P. Monacelli, P. Galeotti, S. Coutu, W. A. Worstell, C. Forti, G. Giacomelli, S P Mikheyev, F.J. Ronga, Aglietta, M, Alessandro, B, Antonioli, P, Arneodo, F, Bergamasco, L, Bertaina, M, Fauth, Ac, Castagnoli, C, Castellina, A, Cattadori, C, Chiavassa, A, Cini, G, Piazzoli, Bd, Disciascio, G, Fulgione, W, Galeotti, P, Ghia, Pl, Iacovacci, M, Mannocchi, G, Melagrana, C, Morello, C, Navarra, G, Riccati, L, Saavedra, O, Trinchero, Gc, Vallania, P, Vernetto, S, 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, Cecchini, S, Cei, F, Chiarella, V, Cormack, R, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, L, Devincenzi, M, Dicredico, A, Diehl, E, Erriquez, O, Favuzzi, C, Ficenec, D, 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, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Klein, S, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marin, A, Marini, A, Martello, D, Chiesa, Am, 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, Nutter, S, Okada, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pavesi, B, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, Nd, Pistilli, P, Raino, A, Reynoldson, J, Ronga, F, Sanzani, G, Sanzgiri, A, Sartogo, F, 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., M., Aglietta, B., Alessandro, P., Antonioli, F., Arneodo, L., Bergamasco, M., Bertaina, A., Campos Fauth, C., Castagnoli, A., Castellina, C., Cattadori, A., Chiavassa, G., Cini, B., D'Ettorre Piazzoli, G., Di Sciascio, W., Fulgione, P., Galeotti, P. L., Ghia, M., Iacovacci, G., Mannocchi, C., Melagrana, C., Morello, G., Navarra, L., Riccati, O., Saavedra, G. C., Trinchero, P., Vallania, S., Vernetto, 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, S., Cecchini, F., Cei, V., Chiarella, R., Cormack, A., Corona, S., Coutu, G., Decataldo, H., Dekhissi, C., Demarzo, M., De Mitri, M., De Vincenzi, A., Di Credico, E., Diehl, O., Erriquez, C., Favuzzi, D., Ficenec, 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, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Klein, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, M. J., Longo, Y., Lu, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marin, A., Marini, Martello, Daniele, A., Marzari Chiesa, P., Matteuzzi, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrun, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, S., Nutter, C., Okada, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, B., Pavesi, R., Pazzi, C. W., Peck, J., Petraki, S., Petrera, N. D., Pignatano, P., Pistilli, A., Rainó, J., Reynoldson, F., Ronga, G., Sanzani, 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, J., Steele, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, W., Worstell, A. C., Fauth, D'ETTORRE PIAZZOLI, Benedetto, G., Disciascio, Iacovacci, Michele, Barbarino, Giancarlo, L., Demitri, M., Devincenzi, A., Dicredico, Guarino, Fausto, G., Mancarella, A., Margiottaneri, D., Martello, A. M., Chiesa, D., Nicolo, A., Raino, P. S., Lugaresi, G., Tarle, Aglietta M., Alessandro B., Antonioli P., Arneodo F., Bergamasco L., Bertaina M., Fauth A.C., Castagnoli C., Castellina A., Cattadori C., Chiavassa A., Cini G., D'Ettorre Piazzoli B., Di Sciascio G., Fulgione W., Galeotti P., Ghia P.L., Iacovacci M., Mannocchi G., Melagrana C., Morello C., Navarra G., Riccati L., Saavedra O., Trinchero G.C., Vallania P., Vernetto S., 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., Cecchini S., Cei F., Chiarella V., Cormack R., Corona A., Coutu S., DeCataldo G., Dekhissi H., DeMarzo C., De Mitri M., De Vincenzi M., Di Credico A., Diehl E., Erriquez O., Favuzzi C., Ficenec D., 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., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Klein S., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Liu G., Liu R., Longo M.J., Lu Y., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marin A., Marini A., Martello D., Chiesa A.M., Matteuzzi P., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Mittelbrun M., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Nutter S., Okada C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pavesi B., Pazzi R., Peck C.W., Petrakis J., Petrera S., Pignatano N.D., Pistilli P., Raino A., Reynoldson J., Ronga F., Sanzani G., Sanzgiri A., Sartogo F., 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: Nuclear and High Energy Physics, Proton, EAS-TOP, Astrophysics::High Energy Astrophysical Phenomena, Other Fields of Physics, chemistry.chemical_element, Cosmic ray, MACRO, Astrophysics, CASCADES, Coincidence, Spectral line, DEEP-UNDERGROUND MUONS, Nuclear physics, Primary (astronomy), Nuclear Experiment, Helium, Physics, Range (particle radiation), Muon, GRAN-SASSO, MACRO DETECTOR, Astrophysics::Instrumentation and Methods for Astrophysics, Gran Sasso, chemistry, High Energy Physics::Experiment
Abstract: A study of the primary cosmic ray composition in the energy range 5ṡ1014−5ṡ1015 eV is performed through the analysis of the deep underground muons and of the e.m. component of Extensive Air Showers detected in coincidence by the MACRO and EAS-TOP experiments at the Gran Sasso Laboratory. We conclude that: a) pure proton and Iron primary beams are excluded by the experimental data; b) a fraction of nuclei heavier than Helium is necessary to explain the experimental data both below and above the knee; c) a mixed composition, obtained a priori from extrapolations of the spectra directly measured below 100 TeV, yields a reasonable account of the observations up to the knee of the primary spectrum.
Published: 1994

43. Estimate of the primary cosmic ray composition from a multi-parametric fit of MACRO multimuon events

Author: Valente, Paolo Lipari, J. Musser, Jl Stone, G. Ludlam, Marco Grassi, A. M. Baldini, F. Cafagna, Am Neri, F.J. Ronga, P. Pistilli, L. Patrizii, G. Mandrioli, Mn Mazziotta, P. Bernardini, R. Pazzi, J. T. Hong, D. G. Michael, Np Longley, M. Calicchio, Halina Bilokon, Marco Monteno, C. E. Lane, M. Goretti, S. Kyriazopoulou, Bisi, S. Cecchini, Alec Habig, Maurizio Spurio, A. Surdo, L. R. Sulak, C. Okada, M. Severi, G. C. Barbarino, E. Kearns, R. C. Webb, P. F. Spada, R. Steinberg, C. R. Bower, A. Corona, Y. Lu, M. Spinetti, C. W. Peck, R. Baker, Eugenio Scapparone, A. Marzari-Chiesa, O. Erriquez, G. Tarle, E. Lamanna, P. Spinelli, C. Bloise, P. Fusco, S. Petrera, Andrea Carlo Marini, Giovanni Mancarella, C. Satriano, G. Auriemma, M. J. Longo, L. Miller, D. Levin, D. Martello, A. Sciubba, G. Osteria, S. Parlati, T. Bosio, M. Mittelbrunn, R. Fantini, O. Palamara, N. D. Pignatano, P. Serra-Lugaresi, B. C. Barish, S. L. Mufson, E. Katsavounidis, I DeMitri, Kate Scholberg, A. Sanzgiri, L. Satta, Kael Hanson, P Guamaccia, Roberto Bellotti, R. Liu, A DiCredico, M. Carboni, M. Ambrosio, F. Guarino, G. Liu, R.M. Heinz, U. Rubizzo, D. Campana, A. Hawthorne, Patera, Severino Angelo Maria Bussino, M. Devincenzi, Donato Nicolo, C. Orth, J. Reynoldson, C. W. Walter, H. Dekhissi, Popa, Chiarella, C. Forti, Fabrizio Cei, M. G. Castellano, G. Giacomelli, G. Battistoni, A. Rainò, R. Nolty, C. Bemporad, F. Sartogo, S P Mikheyev, C. DeMarzo, P. Monacelli, G. Giannini, N. Giglietto, Togo, S. Coutu, R. Antolini, G. DeCataldo, Mario Sitta, C. Gustavino, C. Favuzzi, A. A. Grillo, E. Iarocci, T. Montaruli, 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, and Webb, R.
Subjects: Physics, Nuclear and High Energy Physics, Multi parametric, Primary (astronomy), Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, MACRO, Composition (combinatorics), Macro, Muon underground, Atomic and Molecular Physics, and Optics, Computational physics
Abstract: Multimuon data from the MACRO experiment at Gran Sasso have been analysed 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 measurements. The average mass number shows a weak dependence on the primary energy below 10^{6} GeV. Even within large uncertainties our data support a possible increase of the average mass number at higher energies.
Published: 1996

44. Search forCPViolation in Charged-ΞandΛHyperon Decays

Author: C. Durandet, Daniel M. Kaplan, K. S. Nelson, Kam-Biu Luk, M. Huang, Julián Félix, G. Gidal, N. Leros, L. C. Lu, F. Lopez, C. James, R. A. Burnstein, Woon-Seng Choong, T. Holmstrom, Y. Fu, P. Gu, P. K. Teng, H. K. Park, S.L. White, T.D. Jones, Leon M. Lederman, D. Rajaram, W. Luebke, A. Chakravorty, C. Ho, H. A. Rubin, J. P. Perroud, J. Volk, Aw Chan, E.C. Dukes, K. Clark, P. Zyla, Christopher G. White, Y. C. Chen, M. J. Longo, H. R. Gustafson, and C. M. Jenkins
Subjects: Nuclear physics, Momentum, Physics, Particle physics, Angular distribution, Hyperon, General Physics and Astronomy, CP violation, High Energy Physics::Experiment, Fermilab, Lambda, Polarization (waves)
Abstract: The novel sources of CP violation observed in charged χ and λ hyperon decays were investigated. A comparison of the p and p angular distributions in the hyperon decays was made using a subset of the data from the HyperCP experiment (E871) at Fermilab. A possible source of bias was found to be a momentum-dependent differential loss of events due to interactions of the χ- and χ+ decay products. The obtained result was observed to be stable with respect to time, χ momentum, and secondary-beam intensity, The results show that differences between the χ- and χ+ production angles could cause a bias due to production polarization differences.
Published: 2004

45. Search for the lepton-number-violating decay Xi(-)--pmu(-)mu(-)

Author: D, Rajaram, R A, Burnstein, A, Chakravorty, A, Chan, Y C, Chen, W S, Choong, K, Clark, E C, Dukes, C, Durandet, J, Felix, G, Gidal, P, Gu, H R, Gustafson, C, Ho, T, Holmstrom, M, Huang, C, James, C M, Jenkins, D M, Kaplan, L M, Lederman, N, Leros, M J, Longo, F, Lopez, L C, Lu, W, Luebke, K B, Luk, K S, Nelson, H K, Park, J-P, Perroud, H A, Rubin, P K, Teng, J, Volk, C G, White, S L, White, and P, Zyla
Abstract: A sensitive search for the lepton-number-violating decay Xi(-)--pmu(-)mu(-) has been performed using a sample of approximately 10(9) Xi(-) hyperons produced in 800 GeV/c p-Cu collisions. We obtain B(Xi(-)--pmu(-)mu(-))4.0x10(-8) at 90% confidence, improving on the best previous limit by 4 orders of magnitude.
Published: 2004

46. High statistics search for theθ+(1.54)pentaquark state

Author: C. James, W. S. Choong, R. A. Burnstein, H. R. Gustafson, Y. Fu, K. Clark, N. Leros, F. Lopez, J. P. Perroud, A. Chakravorty, Leon M. Lederman, K. S. Nelson, Kam-Biu Luk, Daniel M. Kaplan, L. C. Lu, H. K. Park, G. Gidal, C. Durandet, T. Jones, J. Volk, M. Huang, C. M. Jenkins, H. A. Rubin, Julián Félix, E.C. Dukes, D. Rajaram, W. Luebke, Christopher G. White, Sebastian N. White, Y. C. Chen, T. Holmstrom, M. J. Longo, and P. Zyla
Subjects: Nuclear physics, Physics, Baryon, Nuclear and High Energy Physics, Particle physics, Mass distribution, State (functional analysis), Fermilab, Pentaquark
Abstract: We have searched for Theta+(1.54) -> K0,p decays using data from the 1999 run of the HyperCP experiment at Fermilab. We see no evidence for a narrow peak in the K0,p mass distribution near 1.54 GeV/c among 106,000 K0,p candidates, and obtain an upper limit for the fraction of Theta+(1.54) to K0,p candidates of
Published: 2004

47. Search for DeltaS = 2 nonleptonic hyperon decays

Author: C G, White, R A, Burnstein, A, Chakravorty, A, Chan, Y C, Chen, W S, Choong, K, Clark, E C, Dukes, C, Durandet, J, Felix, G, Gidal, P, Gu, H R, Gustafson, C, Ho, T, Holmstrom, M, Huang, C, James, C M, Jenkins, D M, Kaplan, L M, Lederman, N, Leros, M J, Longo, F, Lopez, L C, Lu, W, Luebke, K B, Luk, K S, Nelson, H K, Park, J-P, Perroud, D, Rajaram, H A, Rubin, P K, Teng, J, Volk, S L, White, and P, Zyla
Abstract: A sensitive search for the rare decays Omega(-)--Lambdapi(-) and Xi(0)--ppi(-) has been performed using data from the 1997 run of the HyperCP (Fermilab E871) experiment. Limits on other such processes do not exclude the possibility of observable rates for |DeltaS| = 2 nonleptonic hyperon decays, provided the decays occur through parity-odd operators. We obtain the branching-fraction limits B(Omega(-)--Lambdapi(-))2.9 x 10(-6) and B(Xi(0)--ppi(-))8.2 x 10(-6), both at 90% confidence level.
Published: 2004

48. Evidence for the decay sigma+ --pmu+ mu

Author: H K, Park, R A, Burnstein, A, Chakravorty, Y C, Chen, W S, Choong, K, Clark, E C, Dukes, C, Durandet, J, Felix, Y, Fu, G, Gidal, H R, Gustafson, T, Holmstrom, M, Huang, C, James, C M, Jenkins, T, Jones, D M, Kaplan, L M, Lederman, N, Leros, M J, Longo, F, Lopez, L C, Lu, W, Luebke, K B, Luk, K S, Nelson, J-P, Perroud, D, Rajaram, H A, Rubin, J, Volk, C G, White, S L, White, and P, Zyla
Abstract: We report the first evidence for the decay Sigma(+)--pmu(+)mu(-) from data taken by the HyperCP (E871) experiment at Fermilab. Based on three observed events, the branching ratio is B(Sigma(+)--pmu(+)mu(-))=[8.6(+6.6)(-5.4)(stat)+/-5.5(syst)]x10(-8). The narrow range of dimuon masses may indicate that the decay proceeds via a neutral intermediate state, Sigma(+)--pP(0),P0--mu(+)mu(-) with a P0 mass of 214.3+/-0.5 MeV/c(2) and branching ratio B(Sigma(+)--pP(0),P0--mu(+)mu(-))=[3.1(+2.4)(-1.9)(stat)+/-1.5(syst)]x10(-8).
Published: 2004

49. Search for CP violation in charged-Xi and Lambda hyperon decays

Author: T, Holmstrom, N, Leros, R A, Burnstein, A, Chakravorty, A, Chan, Y C, Chen, W S, Choong, K, Clark, E C, Dukes, C, Durandet, J, Felix, Y, Fu, G, Gidal, P, Gu, H R, Gustafson, C, Ho, M, Huang, C, James, C M, Jenkins, T, Jones, D M, Kaplan, L M, Lederman, M J, Longo, F, Lopez, L C, Lu, W, Luebke, K B, Luk, K S, Nelson, H K, Park, J-P, Perroud, D, Rajaram, H A, Rubin, P K, Teng, J, Volk, C G, White, S L, White, and P, Zyla
Abstract: We have compared the p and p angular distributions in 117 x 10(6) Xi- --Lambdapi- --ppi-pi- and 41 x 10(6) Xi+ --Lambda pi+ --p pi+pi+ decays using a subset of the data from the HyperCP experiment (E871) at Fermilab. We find no evidence of CP violation, with the direct-CP-violating parameter AXiLambda identical with (alphaXialphaLambda-alpha Xialpha Lambda)/(alphaXialphaLambda+alphaXialphaLambda)=[0.0+/-5.1(stat)+/-4.4(syst)] x 10(-4).
Published: 2004

50. New Measurement ofΞ−→Λπ−Decay Parameters

Author: C. Durandet, N. Leros, T.D. Jones, W. Luebke, A. Chakravorty, K. Clark, P. Zyla, G. Gidal, R. A. Burnstein, Leon M. Lederman, T. Holmstrom, E.C. Dukes, D. Rajaram, H. R. Gustafson, C. James, Woon-Seng Choong, M. J. Longo, J. Volk, Fred Lopez, L. C. Lu, J. P. Perroud, H. K. Park, C. M. Jenkins, K. S. Nelson, Kam-Biu Luk, M. Huang, Julián Félix, Daniel M. Kaplan, Christopher G. White, Sebastian N. White, Y. C. Chen, and H. A. Rubin
Subjects: Nuclear physics, Physics, Hyperon, General Physics and Astronomy, CP violation, Atomic physics, Polarization (waves)
Abstract: A study on the measurement of φ≡ using a sample of 144×106 ≡- →λπ- decays having an average polarization of 3.7% was presented. The polarized ≡-'s were produced by directing an 800 geV÷c proton beam onto a 2 mm ×2 mm× 60 mm cu target at angles of +3 and -3 mrad. The results were shown to be a 2.9× improvement over the best previous mesurements. It was shown that CP violation in charged ≡→λπ decays are not suppressed by a vanishing final phase shift difference.
Published: 2004

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