Superheavy particles either for UHECR of for muon anomaly

Autor: Chavez, H., Masperi, L., Orsaria, M.

We show that, according to the scheme of spontaneous breakings starting from a GUT with symmetry E6, it is possible that either a superheavy particle without ordinary interactions is source of ultra-high energy cosmic rays or a not so heavy lepton mi

Externí odkaz: http://arxiv.org/abs/hep-ph/0108183

Comparison of stars and decaying neutrinos as additional sources of Intergalactic UV background

Autor: Masperi, L., Savaglio, S.

Publikováno v: Astron.Astrophys.312:1-7,1997

A numerical calculation of properties of finite absorbers and of intergalactic medium based on photoionization equilibrium is performed to confront alternative UV sources in addition to quasars. It is seen that a spectrum including a large peak aroun

Externí odkaz: http://arxiv.org/abs/astro-ph/9609173

Strings And Non-Topological Solitons

Autor: Fiore, R., Galeazzi, D., Masperi, L., Megevand, A.

Publikováno v: Mod.Phys.Lett. A9 (1994) 557-568

We have numerically calculated topological andnon-topological solitons in two spatial dimensions with Chern-Simons term. Their quantum stability, as well as that of the Maxwell vortex, is analyzed by means of bounce instantons which involve three-dim

Externí odkaz: http://arxiv.org/abs/hep-th/9310039

Shower Studies at around $10^{18}$ eV with the Surface Detector of the Pierre Auger Observatory

Autor: P-L, Ghia, Mostafa, M. A., Fick, B., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V.

Publikováno v: 28th International Cosmic Ray Conference
International Cosmic Ray Conference 28 ICRC 2003
International Cosmic Ray Conference 28 ICRC 2003, Jul 2003, Tsukuba, Japan. pp.337-340
HAL

Three months of data taken by the Engineering Array Surface Detector of the Pierre Auger Observatory have been analyzed with the aim of setting a procedure for the study of showers at E_0 ~ 10^18 eV. We present the results, concerning: (i) the select

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d7768ee131eb0278d36275df4cab078
http://hal.in2p3.fr/in2p3-00014042

Calibration of the Pierre Auger fluorescence detector

Autor: Roberts, M., Ave, M., Letessier, A., Bertou, X., Deligny, O., Lachaud, C., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M. T., Epele, L. N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S. J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R. W., Dawson, B. R., Pace, R., Riordan, D., Thornton, G. J., Wild, N. R., Boutonnet, C., Brunet, J. M., Capdevielle, J. N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J. J., Benoît Revenu, Tristram, G., Waisbard, J., Billoir, P., Boratav, M., Castera, A., Sylvie DAGORET, Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T. N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J. N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Oleg Lodygensky, Rypko, J., Martin Urban, Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H. O., Kleinfeller, J., Mathes, H. J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K. H., Keilhauer, B., Argiro, S., Camin, D. V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, D., Zavrtanik, M., Clark, P., Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J. W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J. M., Mcewen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Allison, P., Beatty, J., Coutu, S., Duvernois, M., Cassiday, G., Fick, B., Sommers, P., Luis. Anchordoqui, Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D. Q., Darriulat, P., Chung, N., Dzung, N. T., Dinh, P. N., Phuong, P. T., Thuan, V. V.

Publikováno v: 28th International Cosmic Ray Conference
International Cosmic Ray Conference 28 ICRC 2003
International Cosmic Ray Conference 28 ICRC 2003, Jul 2003, Tsukuba, Japan. pp.453-456
HAL

The absolute calibration of an air fluorescence detector (FD) is an important element in correctly determining the energy of detected cosmic rays. The absolute calibration relates the flux of photons of a given wavelength at the detector aperture to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a00634796797ed0d31595fe9e8d58cd