Author: "Creti, P" / Topic: physics - Searchworks@Jio Institute Digital Library Search Results

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81 results on '"Creti, P"'

1. Maximizing Fluorescence Enhancement in Metal Nanoantenna Arrays for efficient bioanalytical devices

Author: Lospinoso Daniela, Colombelli Adriano, Creti’ Arianna, Cesaria Maura, Lomascolo Mauro, Rella Roberto, and Manera Maria Grazia
Subjects: Physics, QC1-999
Abstract: Our investigation focused on fluorescence enhancement mechanisms using metal nanoantennas with Alexa Fluor-647. By exploiting numerical modelling tools, we fabricated non-interacting Au nanodisc arrays on glass substrates, achieving a maximum fluorescence enhancement factor of 180 at an optimal spacer thickness of approximately 10 nm. Comparative analysis with bare glass substrates revealed significant improvements in excitation and emission dynamics, attributed to nanoscale field confinement and the Purcell effect. Time- and space-resolved photoluminescence measurements unveiled a distance-dependent interaction between the fluorophore and localized plasmons, modulated by thin polyelectrolyte monolayers, with prevalent radiative processes in samples exhibiting maximum signal.
Published: 2024
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2. The AMY experiment: Microwave emission from air shower plasmas

Author: Alvarez-Muñiz J., Blanco M., Boháčová M., Buonomo B., Cataldi G., Coluccia M.R., Creti P., De Mitri I., Di Giulio C., Facal San Luis P., Foggetta L., Gaïor R., Garcia-Fernandez D., Iarlori M., Le Coz S., Letessier-Selvon A., Louedec K., Maris I.C., Martello D., Mazzitelli G., Monasor M., Perrone L., Petrera S., Privitera P., Rizi V., Rodriguez Fernandez G., Salamida F., Salina G., Settimo M., Valente P., Vazquez J.R., Verzi V., and Williams C.
Subjects: Physics, QC1-999
Abstract: You The Air Microwave Yield (AMY) experiment investigate the molecular bremsstrahlung radiation emitted in the GHz frequency range from an electron beam induced air-shower. The measurements have been performed at the Beam Test Facility (BTF) of Frascati INFN National Laboratories with a 510 MeV electron beam in a wide frequency range between 1 and 20 GHz. We present the apparatus and the results of the tests performed.
Published: 2016
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3. The PADME electromagnetic calorimeter

Author: Albicocco, P., Ameli, F., Bossi, F., Bedogni, R., Buonomo, B., Caricato, A. P., Chiodini, G., Creti, P., de Sangro, R., Ferrarotto, F., Finocchiaro, G., Fiore, S., Foggetta, L. G., Georgiev, G., Ghigo, A., Gianotti, P., Kozhuharov, V., Leonardi, E., Martino, M., Maruccio, G., Monteduro, A., Oliva, F., Organtini, G. C., Palutan, M., Piperno, G., Raggi, M., Safai Tehrani, F., Sarra, I., Scherini, V., Sciascia, B., Spadaro, T., Spagnolo, S., Spiriti, E., Taruggi, C., Tsankov, L., Valente, P., and Vilucchi, E.
Subjects: Physics, History, Optics, Electromagnetic calorimeter, business.industry, The PADME experimenti, dark photon, business, dark matter, Computer Science Applications, Education
Published: 2019

4. The Air Microwave Yield (AMY) experiment to measure the GHz emission from air shower plasmas

Author: Smida R., Salina G., Settimo M., Salamida F., Fernandez G. Rodriguez, Rizi V., Riegel M., Petrera S., Privitera P., Perrone L., Monasor M., Martello D., Iarlori M., Luis P. Facal San, Engel R., Creti P., De Mitri I., Di Giulio C., Verzi V., Coluccia M.R., Cataldi G., Bohacova M., Alvarez-Muñiz J., Werner F., and Williams C.
Subjects: Physics, QC1-999
Abstract: The AMY experiment aims to measure the Microwave Bremsstrahlung Radiation (MBR) emitted by air-showers secondary electrons accelerating in collisions with neutral molecules of the atmosphere. The measurements are performed at the Beam Test Facility (BTF) of Frascati INFN National Laboratories and the final purpose is to characterize the process to be used in a next generation detectors of ultra-high energy cosmic rays (up to 1020eV). We describe the experimental set-up and the first test measurement performed in November 2011.
Published: 2013
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5. Gamma ray sources observation with the ARGO-YBJ detector

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, MARI, Stefano Maria, B. Bartoli, BERNARDINI, Paolo, X. J. Bi, C. Bleve, I. Bolognino, P. Branchini, A. Budano, A. K. Calabrese Melcarne, P. Camarri, Z. Cao, A. Cappa, R. Cardarelli, S. Catalanotti, C. Cattaneo, P. Celio, S. Z. Chen, T. L. Chen, Y. Chen, P. Creti, S. W. Cui, B. Z. Dai, G. D’Alì Staiti, Danzengluobu, M. Dattoli, DE MITRI, Ivan, B. D’Ettorre Piazzoli, T. Di Girolamo, X. H. Ding, G. Di Sciascio, C. F. Feng, Zhaoyang Feng, Zhenyong Feng, F. Galeazzi, P. Galeotti, E. Giroletti, Q. B. Gou, Y. Q. Guo, H. H. He, Haibing Huo, Hongbo Hue, Q. Huang, M. Iacovacci, R. Iuppa, I. Jame, H. Y. Jia, Labaciren, H. J. Li, J. Y. Li, X. X. Li, G. Liguori, C. Liu, C. Q. Liu, J. Liu, M. Y. Liu, H. Lu, X. H. Ma, MANCARELLA, Giovanni, S. M. Mari, MARSELLA, GIOVANNI, MARTELLO, Daniele, S. Mastroianni, P. Montini, C. C. Ning, A. Pagliaro, PANAREO, Marco, B. Panico, PERRONE, Lorenzo, P. Pistilli, X. B. Qu, E. Rossi, F. Ruggieri, P. Salvini, R. Santonico, P. R. Shen, X. D. Sheng, F. Shi, C. Stanescu, A. Surdo, Y. H. Tan, P. Vallania, S. Vernetto, C. Vigorito, B. Wang, H. Wang, C. Y. Wu, H. R. Wu, B. Xu, L. Xue, Y. X. Yan, Q. Y. Yang, X. C. Yang, Z. G. Yao, A. F. Yuan, M. Zha, H. M. Zhang, JilongZhang, JianliZhang, L. Zhang, P. Zhang, X. Y. Zhang, Y. Zhang, Zhaxiciren, Zhaxisangzhu, X. X. Zhou, F. R. Zhu, Q. Q. Zhu, G. Zizzi, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Alì Staiti, M., Dattoli, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Huo, Hongbo, Hue, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilongzhang, Jianlizhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, and G., Zizzi
Subjects: Physics, Nuclear and High Energy Physics, Gamma Astronomy, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Detector, Gamma ray, Flux, Astronomy, Extensive Air Shower, Astronomy and Astrophysics, Astrophysics, Gamma-ray astronomy, Array Detector, Gamma-Ray, Argo-Ybj, Gamma Astronomy, Array Detector, Crab Nebula, Air shower, Pulsar, Milagro, Blazar, Instrumentation, Argo
Abstract: In this paper we report on the observations of TeV gamma ray sources performed by the air shower de- tector ARGO-YBJ. The objects studied in this work are the blazar Markarian 421 and the extended galactic source MGROJ1908+06, monitored during 2 years of operation. Mrk421 has been detected by ARGO-YBJ with a statisti- cal significance of 11 standard deviations. The observed TeV emission was highly variable, showing large enhance- ments of the flux during active periods. The study of the spectral behaviour during flares revealed a positive correla- tion of the hardness with the flux, as already reported in the past by the Whipple telescope, suggesting that this is a long term property of the source. ARGO-YBJ observed a strong correlation between TeV gamma rays and the X-ray flux measured by RXTM/ASM and SWIFT/BAT during the whole period, with a time lag compatible with zero, supporting the one-zone SSC model to describe the emission mechanism. MGROJ1908+06 has been detected by ARGO-YBJ with 5 standard deviation of significance. From our data the source appears extended and the measured extension is ext=0.48 +0.26 0.28 , in agreement with a previous HESS obser- vation. The average flux is in marginal agreement with that reported by MILAGRO, but significantly higher than that ob- tained by HESS, suggesting a possible flux variability. The large field of view ( 2 sr) and the high duty cycle allow a continuous monitoring of the sky in the declination band from 0 to 70 . In this paper we report on the ob- servations of two bright gamma ray sources, performed dur- ing 2 years: the blazar Mrk421 and the extended galactic source MGROJ1908+06.
Published: 2012
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6. The ARGO-YBJ contribution to the cosmic ray physics

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, MARI, Stefano Maria, G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., CALABRESE MELCARNE, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, Y., Chen, N., Cheng, P., Creti, S. W., Cui, B. Z., Dai, G., D’ALÍ STAITI, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, R., Gargana, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, B., Liberti, G., Liguori, C., Liu, C. Q., Liu, M. Y., Liu, J., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., Iacovacci, M., Bartoli, B., Catalanotti, S., Di Girolamo, T., D'Ettorre Piazzoli, B., and Mastroianni, S.
Subjects: Physics, Nuclear and High Energy Physics, Large field of view, media_common.quotation_subject, Detector, Astronomy, Extensive Air Shower, Cosmic ray, Extended Air Showers, Astrophysics, Effects of high altitude on humans, Cosmic Ray, Declination, Atomic and Molecular Physics, and Optics, Argo-Ybj, Duty cycle, Sky, Detector Array, RPC, Argo, media_common
Abstract: ""The ARGO-YBJ experiment is in stable data taking since November 2007 at the YangBaJing Cosmic Ray. Laboratory (Tibet, P.R.China, 4300 m a.s.l.). It exploits a full coverage and high altitude approach to the. small air showers detection. The detector is made of a single layer of RPCs operated in streamer mode, fully. instrumenting a central carpet of about 5700 m2, then a guard ring extends the partially instrumented area to. about 11,000 m2. The large field of view (∼ 2 sr) and the high duty cycle (≥ 85%) allow a continuous monitoring. of the sky in the declination band from -10. ◦. to 70. ◦. ; the detector operates with an energy threshold of a few. hundred GeV. Recent achieved results will be reported""
Published: 2011
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7. Measurement of the antiproton/proton ratio at TeV energies with the ARGO-YBJ detector

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, DE VINCENZI, Mario, MARI, Stefano Maria, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Ali´ Staiti, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Huo, Hongbo, Hue, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilongzhang, Jianlizhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, PAMELA detector, Proton, Astrophysics::High Energy Astrophysical Phenomena, Extensive air shower, Dark matter, Antiproton/proton ratio measurement, Astronomy, Cosmic ray, Astrophysics, Physics::Geophysics, law.invention, Earth's magnetic field, law, Antiproton, Physics::Space Physics, Shadow, Cosmic rays, Extensive air shower, Antiproton/proton ratio measurement, TeV dark matter, TeV dark matter, Astrophysics::Earth and Planetary Astrophysics, Instrumentation
Abstract: Cosmic ray antiprotons provide an important probe for the study of cosmic-ray propagation in the interstellar space and to investigate the existence of Galactic dark matter. Cosmic rays are hampered by the Moon, therefore a deficit of cosmic rays in its direction is expected (the so-called Moon shadow). The Earth–Moon system acts as a magnetic spectrometer. In fact, due to the geomagnetic field the center of the Moon shifts westward by an amount depending on the primary cosmic ray energy. Paths of primary antiprotons are therefore deflected in an opposite sense in their way to the Earth. This effect allows, in principle, the search of antiparticles in the opposite direction of the observed Moon shadow. The ARGO-YBJ experiment, in stable data taking since November 2007 with an energy threshold of a few 100s of GeV, is observing the Moon shadow with high statistical significance. Using about 1 year data, an upper limit of the p ¯ / p flux ratio in the few-TeV energy region is set to a few percent with a confidence level of 90%.
Published: 2011
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8. MACRO results on atmospheric neutrinos

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, G. GIACOMELLI, A.MARGIOTTA, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, NEUTRINO OSCILLATIONS, Astrophysics (astro-ph), Monte Carlo method, FOS: Physical sciences, MACRO, Solar neutrino problem, Lorentz covariance, Astrophysics, Atomic and Molecular Physics, and Optics, High Energy Physics - Experiment, Atmospheric Neutrino, atmospheric neutrino, High Energy Physics - Experiment (hep-ex), Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Underground detector, Event (particle physics)
Abstract: We discuss the final results of the MACRO experiment on atmospheric neutrino oscillations. The data concern event topologies with average neutrino energies of ~3 and ~50 GeV. Multiple Coulomb Scattering of the high energy muons was used to estimate the neutrino energy event by event. The angular distributions, the L/E_nu distribution, the particle ratios and the absolute fluxes all favor nu_mu --> nu_tau oscillations with maximal mixing and Delta m^2 ~0.0023 eV^2. Emphasis is given to measured ratios which are not affected by Monte Carlo (MC) absolute normalization; a discussion is made on MC uncertainties. A preliminary search for possible Lorentz invariance violation contributions to atmospheric neutrino oscillations is presented and discussed., 4 pages, 6 figures. Paper presented at the NOW 2004 Workshop, Conca Specchiulla, Otranto, Italy, September 2004
Published: 2005
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9. Local Station: the data read-out basic unit for the ARGO-YBJ experiment

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., R., Assiro, A., Aloisio, S., Catalanotti, S., Cavaliere, Cesaroni, Federico, P., Creti, Marsella, Giovanni, S., Mastroianni, Panareo, Marco, Pinto, Carlo, A., Surdo, Aloisio, Alberto, Catalanotti, Sergio, Cavaliere, Sergio, F., Cesaroni, G., Marsella, Mastroianni, Stefano, M., Panareo, C. PINTO AND A., Surdo, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Shower Array Detector, Physics, Resistive touchscreen, business.industry, Detector, Readout electronics, General Medicine, Full coverage, Argo-YBJ, Data acquisition, Data Acquisition System, business, Computer hardware, Argo
Abstract: ARGO-YBJ is a full coverage layer of Resistive Plate Counters (RPCs) covering an area of about 5.800 m 2 to be installed at the YangBaJing Laboratory (Tibet, China) at 4.300 m a.s.l . The DAQ system is based on a Central Station which receives the detector information from distributed readout electronics. Data from each RPC are acquired from a Receiver Card which reads out and digitizes the space and time information from 10 pick-up pads and gives out the pad multiplicity for trigger purposes. The Receiver Cards are hosted in Local Stations which Group 12 RPCs. On trigger occurrence, each Local Station sends the collected data to the Central Station. Both the detector and the electronics allow 1 ns accuracy in time measurements. In this work a detailed description of the Local Station and the Trigger System are presented.
Published: 2004
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10. Performance of the RPCs for the ARGO detector operated at the YangBaJing laboratory (4300m a.s.l.)

Author: Bacci, C., Bao, K. Z., Barone, Fabrizio, Bartoli, B., Bastieri, D., Bernardini, P., Buonomo, R., Bussino, S., Calloni, E., Cao, B. Y., Cardarelli, R., Catalanotti, S., Cavaliere, A., Cesaroni, F., Creti, P., Danzengluobu, D'Ettorre Piazzoli, B., De Vincenzi, M., Di Girolamo, T., Di Sciascio, G., Feng, Z. Y., Fu, Y., Gao, X. Y., Geng, Q. X., Guo, H. W., H. H., He, He, M., Huang, Q., Iacovacci, M., Iucci, N., Jai, H. Y., Kong, F. M., Kuang, H. H., Labaciren, Li, B., J. Y., Li, Liu, Z. Q., Lu, H., X. H., Ma, Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mei, D. M., Meng, X. R., Milano, L., Morselli, A., Mu, J., Oliviero, M., Padovani, P., Panareo, M., Parisi, M., Pellizzoni, G., Peng, Z. R., Pistilli, P., Santonico, R., Sartori, G., Sbarra, C., Severino, G., Shen, P. R., Sparvoli, R., Stanescu, C., Su, J., Sun, L. R., Sun, S. C., Surdo, A., Tan, Y. H., Vernetto, S., Vietri, M., Wang, C. R., Wang, H., Wang, H. Y., Wei, Y. N., Yang, H. T., Yao, Q. K., G. C., Yu, Yue, X. D., Yuan, A. F., Zhang, H. M., Zhang, J. L., Zhang, N. J., Zhang, T. J., Zhang, X. Y., Zhaxisangzhu, Zhaxiciren, Zhu, Q. Q., Bacci, C, Bao, Kz, Barone, F, Bartoli, B, Bernardini, P, Bussino, Severino Angelo Maria, Calloni, E, Cao, By, Cardarelli, R, Catalanotti, S, Cavaliere, S, Cesaroni, F, Creti, P, Danzengluobu, Piazzoli, Bd, De Vincenzi, M, Di Girolamo, T, Di Sciascio, G, Feng, Zy, Fu, Y, Gao, Xy, Geng, Qx, Guo, Hw, He, Hh, He, M, Huang, Q, Iacovacci, M, Iucci, N, Jai, Hy, Jing, Cl, Kong, Fm, Kuang, Hh, Labaciren, Li, B, Li, Jy, Liu, Zq, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Meng, Xr, Milano, L, Mu, J, Panareo, M, Peng, Zr, Pistilli, P, Saggese, L, Santonico, R, Shen, Pr, Stanescu, C, Sun, Lr, Sun, Sc, Surdo, A, Tan, Yh, Vernetto, S, Wang, Cr, Wang, H, Wang, Hy, Wei, Yn, Yang, Ht, Yao, Q, Yu, Gc, Yue, Xd, Yuan, Af, Zha, M, Zhang, Hm, Zhang, Jl, Zhang, Nj, Zhang, Xy, Zhaxisangzhu, Zhaxiciren, Zhu, Qq, C., Bacci, K. Z., Bao, F., Barone, Bartoli, Bruno, P., Bernardini, S., Bussino, Calloni, Enrico, B. Y., Cao, R., Cardarelli, Catalanotti, Sergio, S., Cavaliere, F., Cesaroni, P., Creti, D'ETTORRE PIAZZOLI, Benedetto, M. D., Vincenzi, DI GIROLAMO, Tristano, G. D., Sciascio, Z. Y., Feng, Y., Fu, X. Y., Gao, Q. X., Geng, H. W., Guo, H. H., He, M., He, Q., Huang, Iacovacci, Michele, N., Iucci, H. Y., Jai, C. L., Jing, F. M., Kong, H. H., Kuang, B., Li, J. Y., Li, Z. Q., Liu, H., Lu, X. H., Ma, G., Mancarella, S. M., Mari, G., Marsella, D., Martello, X. R., Meng, L., Milano, J., Mu, M., Panareo, Z. R., Peng, P., Pistilli, L., Saggese, R., Santonico, P. R., Shen, C., Stanescu, L. R., Sun, S. C., Sun, A., Surdo, Y. H., Tan, S., Vernetto, C. R., Wang, H., Wang, H. Y., Wang, Y. N., Wei, H. T., Yang, Q., Yao, G. C., Yu, X. D., Yue, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, N. J., Zhang, X. Y., Zhang, Q. Q., Zhu, B., Bartoli, Bernardini, Paolo, E., Calloni, S., Catalanotti, B., D'ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, G., DI SCIASCIO, M., Iacovacci, Mancarella, Giovanni, Marsella, Giovanni, Martello, Daniele, Panareo, Marco, and Q. K., Yao
Subjects: Physics, Nuclear and High Energy Physics, Gamma-ray Astronomy, Extensive air showers, RPCs, Gamma-ray astronomy, Detector, Astronomy, Extensive Air Shower, Time resolution, ARGO-YBJ experiment, chemistry.chemical_compound, chemistry, Operating temperature, Bakelite, Instrumentation, Argo, Counting rate, Remote sensing
Abstract: Bakelite RPCs, assembled according to the ARGO design, have been operated in the high altitude Laboratory of YBJ using dedicated electronics to pick-up the streamer signal. Here we report on the results concerning absorbed current, single counting rate, efficiency and time resolution. Environmental data concerning the operating temperature inside the ARGO experimental hall are also reported. (C) 2003 Elsevier Science B.V. All rights reserved.
Published: 2003
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11. Study of atmospheric neutrinos with the MACRO detector

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Normalization (statistics), Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Solar neutrino, Detector, MACRO, Atmospheric Neutrino, Nuclear physics, Angular distribution, High Energy Physics::Experiment, Neutrino, Macro, Atmospheric neutrino, Underground Detectors
Abstract: The MACRO experiment detected different categories of atmospheric muon neutrinos. We describe in this paper the energy estimate of upward throughgoing muons by using the multiple coulomb scattering. Combining the results of such analysis with the upgoing muon angular distribution, both not using the absolute ν flux normalization informations, an evidence above 4σ for atmospheric neutrino oscillation is found.
Published: 2003
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12. Atmospheric neutrino oscillations in the macro experiment

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Muon, Neutrino oscillation, Oscillation, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Atmospheric neutrino, MACRO, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Nuclear physics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
Abstract: In the MACRO experiment the flux of atmospheric muon neutrinos has been studied through the detection of upward-going muons generated in the rock below the detector and also through neutrino interactions inside the apparatus. Several topologies of neutrino events have been detected, which correspond to different neutrino parent energies. The measured flux in the different data sets shows a deficit with respect to the Monte Carlo predictions. Moreover, the upward-throughgoing muon sample (median neutrino energy ∼ 50 GeV ) also shows a distortion in the angular distribution shape. Interpreted in terms of neutrino oscillation, these results favor a ν μ into ν τ oscillation scenario, while the ν μ into ν sterile channel is disfavared at 99% C.L.
Published: 2002
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13. Transport and charging mechanisms in [Ta.sub.2][O.sub.5] thin films for capacitive RF MEMS switches application

Author: Persano, A., Quaranta, F., Martucci, M.C., Creti, P., Siciliano, P., and Cola, A.
Subjects: Microelectromechanical systems -- Design and construction, Sputtering (Physics) -- Analysis, Electric currents, Vagrant -- Measurement, Tantalum -- Electric properties, Physics
Abstract: Several studies are conducted to explain the various transport, as well as charging mechanisms observed in the [Ta.sub.2][O.sub.5] thin films. These films are shown to be widely used as dielectric layers in in capacitive radio frequency microelectromechanical system switches.
Published: 2010

14. Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO

Author: Bartoli, B., Bernardini, P., Bi, X. J., Branchini, P., Budano, A., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, S., Chen, S. Z., Chen, T. L., Creti, P., Cui, S. W., Dai, B. Z., D Amone, A., Danzengluobu, Mitri, I., D Ettorre Piazzoli, B., Di Girolamo, T., Di Sciascio, G., Feng, C. F., Feng, Zhaoyang, Feng, Zhenyong, Gou, Q. B., Guo, Y. Q., He, H. H., Hu, Haibing, Hu, Hongbo, Iacovacci, M., Iuppa, R., Jia, H. Y., Labaciren, Li, H. J., Liguori, G., Liu, C., Liu, J., Liu, M. Y., Lu, H., Ma, L. L., Ma, X. H., Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Panareo, M., Perrone, L., Pistilli, P., Ruggieri, F., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Surdo, A., Tan, Y. H., Piero Vallania, Vernetto, S., Vigorito, C., Wang, H., Wu, C. Y., Wu, H. R., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, L., Zhang, X. Y., Zhang, Y., Zhao, J., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., Bai, Y. X., Chen, M. J., Chen, Y., Feng, S. H., Gao, B., Gu, M. H., Hou, C., Li, X. X., Liu, J. L., Wang, X., Xiao, G., Zhang, B. K., Zhang, S. S., Zhou, B., Zuo, X., Bartoli, B., Bernardini, P., Bi, X. J., Cao, Z., Catalanotti, S., Chen, S. Z., Chen, T. L., Cui, S. W., Dai, B. Z., D'Amone, A., Danzengluobu, Null, De Mitri, I., D'Ettorre Piazzoli, B., Di Girolamo, T., Di Sciascio, G., Feng, C. F., Feng, Zhaoyang, Feng, Zhenyong, Guo, Q. B., Guo, Y. Q., He, H. H., Hu, Haibing, Hu, Hongbo, Iacovacci, M., Iuppa, R., Jia, H. Y., Labaciren, Null, Li, H. J., Liu, C., Liu, J., Liu, M. Y., Lu, H., Ma, L. L., Ma, X. H., Mancarella, G., Mari, S. M., Marsella, G., Mastroianni, S., Montini, P., Ning, C. C., Perrone, L., Pistilli, P., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, H., Wu, C. Y., Wu, H. R., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, L., Zhang, X. Y., Zhang, Y., Zhao, J., Zhaxiciren, Null, Zhaxisangzhu, Null, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Bai, Y. X., Chen, M. J., Feng, S. H., Gao, B., Gu, M. H., Hou, C., Liu, J. L., Wang, X., Xiao, G., Zhang, B. K., Zhang, S. S., Zhou, B., Zuo, X., ITA, Bartoli, Bruno, Bi, X. . j., Catalanotti, Sergio, Chen, S. . z., Chen, T. . l., Cui, S. . w., Dai, B. z, D’Amone, A., D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Feng, C. . f., Guo, Q. . b., Guo, Y. . q., He, H. . h., Iacovacci, Michele, Jia, H. . y., Li, H. . j., Liu, M. . y., Ma, L. . l., Ma, X. . h., Mari, S. . m., Ning, C. . c., Shen, P. . r., Sheng, X. . d., Tan, Y. . h., Wu, C. . y., Wu, H. . r., Yang, Q. . y., Yang, X. . c., Yao, Z. . g., Yuan, A. . f., Zhang, H. . m., Zhang, X. . y., Zhou, X. . x., Zhu, F. . r., Zhu, Q. . q., Bai, Y. . x., Chen, M. . j., Feng, S. . h., Gu, M. . h., Liu, J. . l., Zhang, B. . k., Zhang, S. . s., B., Bartoli, P., Bernardini, X. J., Bi, Z., Cao, S., Catalanotti, S. Z., Chen, T. L., Chen, S. W., Cui, B. Z., Dai, D, A., ’, Amone, Danzengluobu, I. De, Mitri, D, B., Ettorre, Piazzoli, T. Di, Girolamo, G. Di, Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, Q. B., Guo, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, M., Iacovacci, R., Iuppa, H. Y., Jia, Labaciren, H. J., Li, C., Liu, J., Liu, M. Y., Liu, H., Lu, L. L., Ma, X. H., Ma, G., Mancarella, Mari, Stefano Maria, G., Marsella, S., Mastroianni, Montini, Paolo, C. C., Ning, L., Perrone, P., Pistilli, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, H., Wang, C. Y., Wu, H. R., Wu, L., Xue, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, L., Zhang, X. Y., Zhang, Y., Zhang, J., Zhao, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, Y. X., Bai, M. J., Chen, S. H., Feng, B., Gao, M. H., Gu, C., Hou, J. L., Liu, X., Wang, G., Xiao, B. K., Zhang, S. S., Zhang, B., Zhou, and Collaboratio, (LHAASO
Subjects: Nuclear and High Energy Physics, Proton, Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, FOS: Physical sciences, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmic Ray, Helium, Spectral line, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010303 astronomy & astrophysics, Cherenkov radiation, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Spectral index, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, 13. Climate action, Production (computer science), Astrophysics - High Energy Astrophysical Phenomena, Energy (signal processing), proton
Abstract: The measurement of the cosmic ray energy spectrum, in particular for individual species of nuclei, is an important tool to investigate cosmic ray production and propagation mechanisms. The determination of the ``knees'' in the spectra of different species remains one of the main challenges in cosmic ray physics. In fact, experimental results are still conflicting. In this paper we report a measurement of the mixed proton and helium energy spectrum, obtained with the combined data of the ARGO-YBJ experiment and a wide field of view Cherenkov telescope, a prototype of the future LHAASO experiment. By means of a multiparameter technique, we have selected a high-purity proton plus helium sample. The reconstructed energy resolution is found to be about 25% throughout the investigated energy range from 100 TeV to 3 PeV, with a systematic uncertainty in the absolute energy scale of 9.7%. The found energy spectrum can be fitted with a broken power-law function, with a break at the energy ${\mathrm{E}}_{k}=700\ifmmode\pm\else\textpm\fi{}230(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}70(\mathrm{sys})\text{ }\text{ }\mathrm{TeV}$, where the spectral index changes from $\ensuremath{-}2.56\ifmmode\pm\else\textpm\fi{}0.05$ to $\ensuremath{-}3.24\ifmmode\pm\else\textpm\fi{}0.36$. The statistical significance of the observed spectral break is 4.2 standard deviations.
Published: 2015

15. Neutrino Astronomy with MACRO

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, Perrone, Lorenzo, ON BEHALF OF THE MACRO, Collaboration, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, High-energy astronomy, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino astronomy
Abstract: High energy neutrinos from astrophysical sources can be detected as upward-going muons produced in charged-current interactions with the matter surrounding the detector. We present the results of a search for either a diffuse astrophysical neutrino flux or a point-like source of neutrinos in the sample of upward-going muons gathered by MACRO. We find no evidence for both signals. The muon flux upper limit for the diffuse signal has been set at the level of 1.7 × 10^-14cm^-2 s^-1 sr^-1.
Published: 2002
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16. Cosmic Ray composition around the knee from EAS electromagnetic and muon data

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Muon, Coincident, EAS-TOP, Cosmic ray, MACRO, Composition (combinatorics), Atomic and Molecular Physics, and Optics
Abstract: We report the analysis of the N ϵ - N μ coincident events collected by the MACRO/EAS-TOP collaboration at the Gran Sasso Laboratories. The result points to a primary composition becoming heavier around the knee of the primary spectrum (in the energy region 10 15 – 10 16 eV). The result is in very good agreement with the measurements of EAS-TOP alone at the surface, wich detects muons with energy E μ > 1 GeV and uses the same (QGSJET) interaction model.
Published: 2002
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17. Observation of CR Anisotropy with ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: History, 010504 meteorology & atmospheric sciences, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Flux, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Education, Argo-Ybj, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Cosmic anisotropy, Anisotropy, 010303 astronomy & astrophysics, Argo, 0105 earth and related environmental sciences, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, hep-ex, Computer Science Applications, Magnetic field, Sky, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The measurement of the anisotropies of cosmic ray arrival direction provides important informations on the propagation mechanisms and on the identification of their sources. In this paper we report the observation of anisotropy regions at different angular scales. In particular, the observation of a possible anisotropy on scales between $\sim$ 10 $^{\circ}$ and $\sim$ 30 $^{\circ}$ suggests the presence of unknown features of the magnetic fields the charged cosmic rays propagate through, as well as potential contributions of nearby sources to the total flux of cosmic rays. Evidence of new weaker few-degree excesses throughout the sky region $195^{\circ}\leq$ R.A. $\leq 315^{\circ}$ is reported for the first time., Talk given at 12th TAUP Conference 2011, 5-9 September 2011, Munich, Germany
Published: 2011

18. Measurement of the ¯p/p ratio in the few-TeV energy range with ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, DE VINCENZI, Mario, MARI, Stefano Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., CALABRESE MELCARNE, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, Y., Chen, N., Cheng, P., Creti, S. W., Cui, B. Z., Dai, G., D’ALÍ STAITI, M., Dattoli, DE MITRI, Ivan, B., D’ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, R., Gargana, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, X. X., Li, B., Liberti, G., Liguori, C., Liu, C. Q., Liu, M. Y., Liu, J., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, and G., Zizzi
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Moon shadow, Cosmic ray, Astrophysics, Cosmic Ray Antiproton, 01 natural sciences, Atomic and Molecular Physics, and Optics, Flux ratio, Argo-Ybj, Antiproton, Antimatter, 0103 physical sciences, antimatter, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Argo
Abstract: Cosmic ray antiprotons provide an important probe for the study of cosmic ray propagation in the interstellar space and to investigate the existence of Galactic dark matter. The ARGO-YBJ experiment is observing the Moon shadow with high statistical significance at an energy threshold of a few hundred GeV. Using all the data collected until November 2009, we set two upper limits on the p ¯ / p flux ratio: 5% at an energy of 1.4 TeV and 6% at 5 TeV with a confidence level of 90%. In the few-TeV range the ARGO-YBJ results are the lowest available, useful to constrain models for antiproton production in antimatter domains.
Published: 2011

19. Background radioactivity in the scaler mode technique of the Argo-YBJ detector

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, MARI, Stefano Maria, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Ali´ Staiti, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Huo, Hongbo, Hue, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilongzhang, Jianlizhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., B. Bartoli, BERNARDINI, Paolo, X. J. Bi, C. Bleve, I. Bolognino, P. Branchini, A. Budano, A. K. Calabrese Melcarne, P. Camarri, Z. Cao, A. Cappa, R. Cardarelli, S. Catalanotti, C. Cattaneo, P. Celio, S. Z. Chen, T. L. Chen, Y. Chen, P. Creti, S. W. Cui, B. Z. Dai, G. D’Ali´ Staiti, M. Dattoli, B. D’Ettorre Piazzoli, T. Di Girolamo, X. H. Ding, G. Di Sciascio, C. F. Feng, Zhaoyang Feng, Zhenyong Feng, F. Galeazzi, P. Galeotti, E. Giroletti, Q. B. Gou, Y. Q. Guo, H. H. He, Haibing Huo, Hongbo Hue, Q. Huang, M. Iacovacci, R. Iuppa, I. Jame, H. Y. Jia, H. J. Li, J. Y. Li, X. X. Li, G. Liguori, C. Liu, C. Q. Liu, J. Liu, M. Y. Liu, H. Lu, X. H. Ma, MANCARELLA, Giovanni, S. M. Mari, MARSELLA, GIOVANNI, MARTELLO, Daniele, S. Mastroianni, P. Montini, C. C. Ning, A. Pagliaro, PANAREO, Marco, B. Panico, PERRONE, Lorenzo, P. Pistilli, X. B. Qu, E. Rossi, F. Ruggieri, P. Salvini, R. Santonico, P. R. Shen, X. D. Sheng, F. Shi, C. Stanescu, A. Surdo, Y. H. Tan, P. Vallania, S. Vernetto, C. Vigorito, B. Wang, H. Wang, C. Y. Wu, H. R. Wu, B. Xu, L. Xue, Y. X. Yan, Q. Y. Yang, X. C. Yang, Z. G. Yao, A. F. Yuan, M. Zha, H. M. Zhang, JilongZhang, JianliZhang, L. Zhang, P. Zhang, X. Y. Zhang, Y. Zhang, X. X. Zhou, F. R. Zhu, Q. Q. Zhu, and G. Zizzi
Subjects: Physics, Resistive touchscreen, Physics and Astronomy (miscellaneous), Atmospheric pressure, Settore FIS/01 - Fisica Sperimentale, Detector, Scaler Mode, Astronomy and Astrophysics, Cosmic ray, Radioactivity, Array Detector, Scaler Mode, Array Detector, Coincidence, Computational physics, Radioactivity, Air shower, Coincident, Argo
Abstract: ""ARGO-YBJ is an extensive air shower detector located at the Yangbajing Cosmic Ray Laboratory (4300 ma.s.l., 606 g cm^−2 atmospheric depth, Tibet, China).. It is made by a single layer of Resistive Plate Chambers. (RPCs, total surface ~ 6700 m^2) grouped into 153 units. called “clusters”. The low energy threshold of the experiment is obtained using the ”scaler operation mode”, counting all the particles hitting the detector without reconstruction of the shower size and arrival direction. For each cluster the signals generated by these particles are put in coincidence in a narrow time window (150 ns) and read by four independent. scaler channels, giving the counting rates of channel. >= 1, >= 2, >= 3 and >= 4 hits. The study of these counting. rates pointed out a different behavior of channel >= 1. respect to the higher multiplicity channels: while the MC simulations can account fairly well for the coincident counting. rates, the expectation for channel >= 1 is sensibly less. than the measured value. Moreover, the regression coefficient with the atmospheric pressure for channel >= 1 is also. about half of the value measured for the coincident counting rates: seemingly half of these counts did not cross the atmosphere. Measurements of the natural radioactivity background. in the air of the detector hall and a MC simulation to. estimate its contribution on our counting rates are presented and discussed.""
Published: 2011

20. THE ARGO-YBJ EXPERIMENT: A FULL COVERAGE ARRAY FOR γ-RAY ASTRONOMY

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Ali´ Staiti, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Huo, Hongbo, Hue, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilongzhang, Jianlizhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, and G., Zizzi
Subjects: Physics, Gamma ray burst, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Detector, Extensive air shower, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Extensive air showers, gamma rays, gamma-ray burst, Astronomy and Astrophysics, Astrophysics, Air shower, Space and Planetary Science, Duty cycle, Sky, Blazar, Gamma-ray burst, Mathematical Physics, Argo, media_common
Abstract: The ARGO-YBJ experiment is an Extensive Air Shower (EAS) array which combines high altitude location and full coverage active area in order to reach low energy threshold at a level of few hundred of GeV. The large field of view (≈ 2 sr ) and the high duty cycle (≥ 90%) allow the continuous monitoring of the sky searching for unknown sources and unpredictable events, such as flares in blazar emissions and high energy Gamma-Ray Bursts (GRBs). In this paper I will briefly report on the detector performance and on some preliminary results achieved in γ-ray astronomy.
Published: 2011

21. Gamma-Ray Flares from Mrk421 in 2008 observed with the ARGO-YBJ detector

Author: Aielli, G., Bacci, C., Bartoli, B., Bernardini, P., Xj, B., Bleve, C., Branchini, P., Budano, A., Bussino, S., Calabrese Melcarne, A., Camarri, P., Cao, Z., Cappa, A., Cardarelli, R., Catalanotti, S., Cattaneo, C., Celio, P., Chen, S., Chen, Y., Cheng, N., Creti, P., Cui, S., Dai, B., D'Ali'Staiti, G., Danzengluobu, Dattoli, M., De Mitri, I., D’Ettorre Piazzoli, B., De Vincenzi, M., Di Girolamo, T., Ding, X., Di Sciascio, G., Feng, C., Feng, Z., Galeazzi, F., Galeotti, P., Gargana, R., Gou, Q., Guo, Y., Hh, H., Hbi, H., Hbo, H., Huang, Q., Iacovacci, M., Iuppa, R., James, I., Jia, H., Labaciren, Hj, L., Jy, L., Xx, L., Liberti, B., Liguori, G., Liu, C., Liu, J., Liu, M., Lu, H., Xh, M., Mancarella, G., Mari, S., Marsella, G., Martello, D., Mastroianni, S., Meng, X., Montini, P., Ning, C., Pagliaro, A., Panareo, M., Perrone, L., Pistilli, P., Xb, Q., Rossi, E., Ruggieri, F., Saggese, L., Salvini, P., Santonico, R., Shen, P., Sheng, X., Shi, F., Stanescu, C., Surdo, A., Tan, Y., Vallania, P., Vernetto, S., Vigorito, C., Wang, B., Wang, H., Cy, W., Hr, W., Xu, B., Xue, L., Yan, Y., Yang, Q., Yang, X., Yuan, A., Zha, M., Zhang, H., Zhang, J., Zhang, L., Zhang, P., Zhang, X., Zhang, Y., Zhaxisangzhu, Zhou, X., Zhu, F., Zhu, Q., Zizzi, G., G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., CALABRESE MELCARNE, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, Y., Chen, N., Cheng, P., Creti, S. W., Cui, B. Z., Dai, G., D’ALÍ STAITI, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, R., Gargana, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, B., Liberti, G., Liguori, C., Liu, C. Q., Liu, M. Y., Liu, J., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, Zizzi, Giovanni, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, XJ, Bleve, C, Branchini, P, Budano, A, Bussino, S, Calabrese Melcarne, AK, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, SZ, Chen, Y, Cheng, N, Creti, P, Cui, SW, Dai, BZ, D’Ali Staiti, G, Dattoli, M, De Mitri, I, D’Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, XH, Di Sciascio, G, Feng, CF, Feng, ZYa, Feng, ZYo, Galeazzi, F, Galeotti, P, Gargana, R, Gou, QB, Guo, YQ, He, HH, Hu, HBi, Hu, HBo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, HY, Li, HJ, Li, JY, Li, XX, Liberti, B, Liguori, G, Liu, C, Liu, CQ, Liu, J, Liu, MY, Lu, H, Ma, XH, Mancarella, G, Mari, SM, Marsella, G, Martello, D, Mastroianni, S, Meng, XR, Montini, P, Ning, CC, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, XB, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, PR, Sheng, XD, Shi, F, Stanescu, C, Surdo, A, Tan, YH, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, CY, Wu, HR, Xu, B, Xue, L, Yan, YX, Yang, QY, Yang, XC, Yuan, AF, Zha, M, Zhang, HM, Zhang, JLi, Zhang, JLo, Zhang, L, Zhang, P, Zhang, XY, Zhang, Y, Zhou, XX, Zhu, FR, Zhu, QQ, Zizzi, G, Bi, Xj, Bussino, Severino Angelo Maria, Melcarne, Akc, Chen, Sz, Cui, Sw, Dai, Bz, Staiti, Gd, Piazzoli, Bd, Ding, Xh, Feng, Cf, Feng, Zy, Gou, Qb, Guo, Yq, He, Hh, Hu, Hb, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liu, Cq, Liu, My, Ma, Xh, Mari, Stefano Maria, Meng, Xr, Ning, Cc, Qu, Xb, Shen, Pr, Sheng, Xd, Tan, Yh, Wu, Cy, Wu, Hr, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zhang, Hm, Zhang, Jl, Zhang, Xy, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., Bartoli, Bruno, Catalanotti, Sergio, D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Iacovacci, Michele, and Mastroianni, Stefano
Subjects: Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Flux, Astrophysics, BL Lacertae object, Settore FIS/05 - Astronomia E Astrofisica, Extended Air showers, Settore FIS/05 - Astronomia e Astrofisica, general" ["gamma rays], Blazar, BL Lacertae objects, Markarian 421, gamma rays, Cherenkov radiation, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Spectral index, individual (Markarian 421)" ["BL Lacertae objects], Settore FIS/01 - Fisica Sperimentale, Gamma ray, individual (Markarian 421) - gamma rays: observations [BL Lacertae objects], Astronomy and Astrophysics, Air shower, Crab Nebula, Space and Planetary Science, gamma ray, Intergalactic travel, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In 2008 the blazar Markarian 421 entered a very active phase and was one of the brightest sources in the sky at TeV energies, showing frequent flaring episodes. Using the data of ARGO-YBJ, a full coverage air shower detector located at Yangbajing (4300 m a.s.l., Tibet, China), we monitored the source at gamma ray energies E > 0.3 TeV during the whole year. The observed flux was variable, with the strongest flares in March and June, in correlation with X-ray enhanced activity. While during specific episodes the TeV flux could be several times larger than the Crab Nebula one, the average emission from day 41 to 180 was almost twice the Crab level, with an integral flux of (3.6 +-0.6) 10^-11 photons cm^-2 s^-1 for energies E > 1 TeV, and decreased afterwards. This paper concentrates on the flares occurred in the first half of June. This period has been deeply studied from optical to 100 MeV gamma rays, and partially up to TeV energies, since the moonlight hampered the Cherenkov telescope observations during the most intense part of the emission. Our data complete these observations, with the detection of a signal with a statistical significance of 3.8 standard deviations on June 11-13, corresponding to a gamma ray flux about 6 times larger than the Crab one above 1 TeV. The reconstructed differential spectrum, corrected for the intergalactic absorption, can be represented by a power law with an index alpha = -2.1 extending up to several TeV. The spectrum slope is fully consistent with previous observations reporting a correlation between the flux and the spectral index, suggesting that this property is maintained in different epochs and characterizes the source emission processes., Accepted for publication on ApJL
Published: 2010

22. Gamma -ray astronomy with the ARGO-YBJ experiment

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., DI GIROLAMO, Tristano, G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., CALABRESE MELCARNE, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, Y., Chen, N., Cheng, P., Creti, S. W., Cui, B. Z., Dai, G., D’ALÍ STAITI, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, R., Gargana, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, B., Liberti, G., Liguori, C., Liu, C. Q., Liu, M. Y., Liu, J., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, History, Gamma-ray astronomy, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Detector, Extensive air shower, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Computer Science Applications, Education, Argo-Ybj, Air shower, Gamma Astronomy [Resistive Plate Counters, Gamma Ray Bursts], Duty cycle, Sky, Extensive Air Showers, Cosmic Ray, Gamma-ray burst, Blazar, Argo, media_common
Abstract: The ARGO-YBJ experiment is an Extensive Air Shower detector which combines high altitude location (Tibet, People's Republic of China, 4300 m a.s.l.) and full coverage with Resistive Plate Counters, resulting in an energy threshold of a few hundred GeV. The large field of view (~2 sr) and high duty cycle allow the continuous monitoring of the Northern sky, searching for unknown sources and unpredictable events, such as flares in blazar emissions or high energy Gamma Ray Bursts. In this paper I will present some results obtained in γ-ray astronomy with the ARGO-YBJ experiment.
Published: 2010

23. Results from ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., CALABRESE MELCARNE, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, Y., Chen, N., Cheng, P., Creti, S. W., Cui, B. Z., Dai, G., D’ALÍ STAITI, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’ETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, R., Gargana, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, B., Liberti, G., Liguori, C., Liu, C. Q., Liu, M. Y., Liu, J., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Bastieri, D, Rando, R, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., Bartoli, Bruno, Catalanotti, Sergio, D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, and Iacovacci, Michele
Subjects: Physics, Proton, Astrophysics::High Energy Astrophysical Phenomena, Extensive air shower, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Astrophysics, Gamma-ray astronomy, Argo-Ybj, Crab Nebula, Antiproton, Physics::Accelerator Physics, Gamma-ray burst, Argo, ARGO-YBJ, gamma-ray astronomy, cosmic ray physics
Abstract: The ARGO‐YBJ experiment has been put in stable data taking at the YangBaJing Cosmic Ray Laboratory (Tibet, P.R. China, 4300 m a.s.l.). In this paper we report a few selected results in Gamma‐Ray Astronomy (Crab Nebula and Mrk421 observations, search for high energy tails of Gamma Ray Bursts) and Cosmic Ray Physics (Moon and Sun shadow observations, proton‐air cross section measurement, preliminary measurement of the antiproton∕proton ratio at TeV energies).
Published: 2009

24. Measurement of the proton-air cross section with ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., and DE MITRI, Ivan
Subjects: Physics, Nuclear and High Energy Physics, Cross section, Proton, Astrophysics::High Energy Astrophysical Phenomena, Flux, Cosmic ray, Cosmic Ray, Atomic and Molecular Physics, and Optics, Particle detector, Particle identification, Argo-Ybj, Nuclear physics, Cross section (physics), cosmic rays, Measuring instrument, High Energy Physics::Experiment, Zenith, Proton cross-section
Abstract: In this work the results of p-air cross section measurements with the ARGO-YBJ experiment are reported. The analysis is based on the different flux attenuation for different atmospheric depths (i.e. zenith angles), by exploiting the detector capabilities in selecting the shower development stage by means of the size, hit density and lateral profile measurements. The systematic errors introduced by fluctuations in shower development and heavier primaries have been taken into account. The results can give useful insights on p-air interactions at energies where hadronic interaction models start to give significantly different expectations and allow to infer the p-p total cross section in the energy region ( s = 80 GeV − 500 GeV ) not covered by experiments at accelerators.
Published: 2009

25. The NESSiE way to searches for sterile neutrinos at FNAL

Author: Stanco, L., Bagulya, A., Benettoni, M., Bernardini, P., Brugnera, R., Calabrese, M., Cecchetti, A., Cecchini, S., Chernyavskiy, M., Creti, P., Dal Corso, F., Dalkarov, O., Del Prete, A., De Robertis, G., De Serio, M., Esposti, L.Degli, Di Ferdinando, D., Dusini, S., Dzhatdoev, T., Fanin, C., Fini, R.A., Fiore, G., Garfagnini, A., Golovanov, S., Guerzoni, M., Klicek, B., Jakovcic, K., Laurenti, G., Lippi, I., Loddo, F., Longhin, A., Malenica, M., Mancarella, G., Mandrioli, G., Margiotta, A., Marsella, G., Mauri, N., Medinaceli, E., Mengucci, A., Mingazheva, R., Morgunova, O., Muciaccia, M.T., Orecchini, D., Paoloni, A., Papadia, G., Paparella, L., Pasqualini, L., Pastore, A., Patrizii, L., Polukhina, N., Pozzato, M., Roda, M., Roganova, T., Rosa, G., Sahnoun, Z., Simone, S., Sirignano, C., Sirri, G., Spurio, M., Stanko, L., Starkov, N., Stipcevic, M., Surdo, A., Tenti, M., Togo, V., Ventura, M., Vladymyrov, M., Kose, U., Nessi, M., Stanco, L, and Tenti, M
Subjects: Particle physics, Sterile neutrino, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Interaction, Physics::Instrumentation and Detectors, Physics beyond the Standard Model, Interactions, FOS: Physical sciences, 01 natural sciences, NESSIE, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Neutrino, BSM, Detectors and Experimental Techniques, 010306 general physics, Neutrino oscillation, Mixing (physics), Particle Physics - Phenomenology, Physics, 010308 nuclear & particles physics, Oscillation, Beams, Sterile, High Energy Physics::Phenomenology, Beam, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Phenomenology, CP violation, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Neutrino physics is nowadays receiving more and more attention as a possible source of information for the long-standing problem of new physics beyond the Standard Model. The recent measurement of the mixing angle $\theta_{13}$ in the standard mixing oscillation scenario encourages us to pursue the still missing results on leptonic CP violation and absolute neutrino masses. However, puzzling measurements exist that deserve an exhaustive evaluation. The NESSiE Collaboration has been setup to undertake conclusive experiments to clarify the muon-neutrino disappearance measurements at small $L/E$, which will be able to put severe constraints to models with more than the three-standard neutrinos, or even to robustly measure the presence of a new kind of neutrino oscillation for the first time. To this aim the use of the current FNAL-Booster neutrino beam for a Short-Baseline experiment has been carefully evaluated. Its recent proposal refers to the use of magnetic spectrometers at two different sites, Near and Far ones. Their positions have been extensively studied, together with the possible performances of two OPERA-like spectrometers. The proposal is constrained by availability of existing hardware and a time-schedule compatible with the undergoing project of a multi-site Liquid-Argon detectors at FNAL. The experiment to be possibly setup at Booster will allow to definitively clarify the current $\nu_{\mu}$ disappearance tension with $\nu_{e}$ appearance and disappearance at the eV mass scale., Comment: Proceeding of ICHEP2014, 2-7 July 2014, Valencia (Spain), 12 pages, 6 figures
Published: 2014

26. Physics and astronomy results with the ARGO-YBJ experiment

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, DE VINCENZI, Mario, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Marsella, Giovanni, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Nuclear and High Energy Physics, Resistive touchscreen, Extensive air shower, Detector, Astronomy, Cosmic ray, Status report, Full coverage, Cosmic Ray, Atomic and Molecular Physics, and Optics, Argo-Ybj, Granularity, Astrophysical Phenomena, Argo
Abstract: The ARGO-YBJ detector, installed at the Yangbajing Cosmic Ray Laboratory (Tibet, China), at 4300m a.s.l., is a full coverage layer of Resistive Plate Counters with an area of about 6.700 m 2 . The high space-time granularity, the full-coverage technique and the high altitude location make this detector a unique device for a detailed study of atmospheric shower characteristics and allow the investigation of a large variety of astrophysical phenomena. In this work a status report on ARGO-YBJ physics and astronomy results will be presented.
Published: 2008

27. Gamma Ray Astronomy with ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Extensive air shower, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Astrophysics, Gamma-ray astronomy, Argo-Ybj, Crab Nebula, Sky, Gamma ray astronomy, Blazar, Gamma-ray burst, media_common
Abstract: ARGO‐YBJ is the first EAS detector combining a very high mountain altitude (4300 m a.s.1.) to a “full coverage” detection surface. These features allow ARGO‐YBJ to work with an energy threshold as low as a few hundreds GeV. The high duty cycle and the large field of view (∼2 sr) make ARGO‐YBJ suitable to monitor the gamma ray sky, searching for unknown sources and unexpected events, like Active Galactic Nuclei flaring episodes or high energy Gamma Ray Bursts. In this paper we present the first observations of ARGO‐YBJ concerning gamma ray astronomy, in particular the detection of the Crab Nebula and the blazar Markarian 421 during the 2006 and 2008 outbursts, and the results of a search for Gamma Ray Bursts emission in the GeV energy range using the scaler mode technique.
Published: 2008
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28. Search for GRB counterparts using the ARGO‐YBJ experiment in shower mode

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Huang, YF, Dai, ZG, Zhang, B, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Extensive air shower, Gamma ray, Astronomy, Field of view, Cosmic ray, Astrophysics, Gamma-ray, Cutoff, Angular resolution, Gamma-ray-burst, Gamma-ray burst, Zenith, Argo
Abstract: n this paper, the effective area of the ARGO‐YBJ experiment to detect the gamma rays with energy range from 10 GeV to 1 TeV for different incident zenith angles (0,10,20,30,40 degrees) is given respectively. The optimal event selections to search for GRB counterparts with different cutoff energy models (Ecut = 100 GeV and 1 TeV) are studied. Using these selections and their corresponding angular resolutions the searches are done within two hours around the GRB trigger time via different time windows. Finally, the result for the 20 GRBs in the field of view of ARGO between July 2006 and July 2008 is presented, and the fluence upper limit for each GRB is set at 99% confidence level.
Published: 2008

29. Search for GeV Gamma-Ray Bursts with the ARGO-YBJ Detector in Scaler Mode

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Huang, YF, Dai, ZG, Zhang, B, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Resistive touchscreen, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Mode (statistics), Astronomy, Field of view, Astrophysics, Signal, Argo-Ybj, Duty cycle, Gamma-ray-burst, Gamma-ray burst, Energy (signal processing), Exstensive air shower
Abstract: The ARGO‐YBJ experiment is a full coverage array made of Resistive Plate Chambers (RPCs) operated in streamer mode to detect the extensive array showers (EASs). With large field of view (>2sr) and high duty cycle (>90%), the ARGO‐YBJ detector is the right ground‐based apparatus to detect VHE GRBs, while the high altitude (4300 m a.s.l) and scaler working mode enable it to detect GRBs in the GeV region as high energy follow‐up observation of satellites such as SWIFT. If a GRB signal is detected, the four scaler channels, which correspond to different energy thresholds, can provide further information on the energy spectrum and its cut‐off. More than 40 SWIFT GRBs were in ARGO‐YBJ field of view, no significant excess was detected till now.
Published: 2008
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30. ARGO-YBJ experiment in Tibet

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: History, Physics::Instrumentation and Detectors, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, 01 natural sciences, Education, 0103 physical sciences, Gamma ray astronomy, 010303 astronomy & astrophysics, Argo, media_common, Physics, Resistive touchscreen, Large field of view, 010308 nuclear & particles physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Gamma-ray astronomy, Computer Science Applications, Argo-ybj, Air shower, Sky, High Energy Physics::Experiment
Abstract: The ARGO-YBJ detector is an extensive air shower array consisting of a carpet of Resistive Plate Chambers (RPCs). The main scientific goal of this Chinese-Italian experiment is the observation of very high energy (VHE) gamma-rays from astrophysical sources. High altitude and full coverage ensure a low energy threshold (few hundreds of GeV for gamma-initiated showers). High duty-cycle and large field of view allow a continuous sky survey. The data collected with the central carpet during the detector debugging have been analysed. First results about detector performance, gamma astronomy and cosmic ray physics are presented.
Published: 2008

31. GRBs search results with the ARGO-YBJ experiment operated in scaler mode

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., G., DI SCIASCIO, DI GIROLAMO, Tristano, G., Aielli, C., Bacci, F., Barone, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, S., Cavaliere, P., Celio, S. Z., Chen, N., Cheng, P., Creti, S. W., Cui, G., Cusumano, B. Z., Dai, G., D’Alí Staiti, M., Dattoli, DE MITRI, Ivan, R., De Rosa, B., D’Ettorre Piazzoli, M., De Vincenzi, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, C., Ferrigno, F., Galeazzi, P., Galeotti, X. Y., Gao, R., Gargana, F., Garufi, Q. B., Gou, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, B., Liberti, G., Liguori, C. Q., Liu, J., Liu, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, L., Palummo, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, A., Segreto, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, H., Wang, Y. G., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, H. T., Yang, Q. Y., Yang, X. C., Yang, G. C., Yu, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, and Q. Q., Zhu
Subjects: Physics, Range (particle radiation), Gamma ray burst, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Detector, Mode (statistics), FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, gamma-ray burst, Cosmic rays, Extensive air showers [Gamma-ray sources], Cosmic Ray, Coincidence, Raggi cosmici, Space and Planetary Science, Extensive air showers, Satellite, Sciami atmosferici estesi, Gamma-ray burst, Energy (signal processing), Argo
Abstract: The ARGO-YBJ experiment is almost completely installed at the YangBaJing Cosmic Ray Laboratory (4300 m a.s.l., Tibet, P.R. China). The lower energy limit of the detector (E $\sim$ 1 GeV) is reached with the scaler mode, i.e., recording the single particle rate at fixed time intervals. In this technique, due to its high altitude location and large area ($\sim$ 6700 m$^2$), this experiment is the most sensitive among all present and past ground-based detectors. In the energy range under investigation, signals due to local (e.g. solar GLEs) and cosmological (e.g. GRBs) phenomena are expected as significant enhancements of the counting rate over the background. Results on the search for GRBs in coincidence with satellite detections are presented., Proc. of "The Multi-Messenger Approach To High Energy Gamma-Ray Sources" Workshop, Barcelona, July 4-7, 2006
Published: 2007

32. ARGO-YBJ: Status and First Results

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Gamma ray, Flux, Cosmic ray, Field of view, Atomic and Molecular Physics, and Optics, Argo-Ybj, Nuclear physics, Air shower, Duty cycle, High Energy Physics::Experiment
Abstract: Very high energy gamma ray astronomy is one of the scientific goals of the ARGO-YBJ experiment. The detector, which is located in Tibet (China) at 4300 m a.s.l., is a full coverage Extensive Air Shower array consisting of a carpet of Resistive Plate Chambers (RPCs) of about 7000m 2 . The high altitude and the full coverage ensure a very low energy threshold (few hundreds of GeV for primary photons), while the detector time resolution ( σ t ≃ 1 ns ) gives a good pointing accuracy, thus allowing a high sensitivity to γ -ray sources, with a field of view of more than 2 sr and a duty cycle close to 100%. The detector layout, performance and location, offer a unique possibility to make also a deep study of several characteristics of the hadronic component of the cosmic ray flux up to energies of several hundreds of TeV. In particular, the topological structure of the shower, the lateral distribution, the energy spectrum and the space and time flux modulations can be measured with high sensitivity. Moreover, the use of a full coverage detector with a high space granularity gives detailed images of the shower front, that can be used to test different hypotheses on the cosmic ray interaction model, the shower development in the atmosphere and particle physics at very high energies. In this work the general layout of the detector and its performance will be described, together with the first results coming from the analysis of a data sample collected with a relevant fraction of the apparatus that is already in continuous data taking.
Published: 2007

33. ARGO-YBJ: a unique device for the EAS study

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Extended Air Shower, History, Resistive touchscreen, business.industry, Detector, Air shower array, Cosmic ray, Full coverage, Computer Science Applications, Education, Argo-Ybj, Optics, Astrophysical Phenomena, Granularity, business, Argo, Remote sensing
Abstract: The ARGO-YBJ detector, installed at the Yangbajing Cosmic Ray Laboratory (Tibet, China), at 4300m a.s.l., is a full coverage layer of Resistive Plate Counters (RPCs) covering an area of about 5800 m2. The high space-time granularity, the full-coverage technique and the high altitude location will make this detector a unique device for deeply investigating a large variety of astrophysical phenomena. In this work, the capabilities of ARGO-YBJ in imaging and reconstructing in detail some of the main atmospheric shower features will be presented.
Published: 2006

34. Searching for emission from gamma-ray bursts with the ARGO-YBJ detector

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, and Q. Q., Zhuj
Subjects: Physics, History, Gamma ray burst, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Effects of high altitude on humans, Coincidence, Computer Science Applications, Education, Argo-Ybj, Air shower, Extensive Air shower, Satellite, Gamma-ray burst, Argo, Energy (signal processing), Physics::Atmospheric and Oceanic Physics
Abstract: The ARGO-YBJ experiment has been designed to decrease the energy threshold of typical Extensive Air Shower arrays by exploiting the high altitude location (Tibet, People's Republic of China, 4300 m a.s.l.) and the full coverage. The lower energy limit of the detector (a few GeV) is reached with the single particle technique, recording the counting rate at fixed time intervals. We present first results concerning the search for emission from Gamma-Ray Bursts in coincidence with satellite detections
Published: 2006

35. Status of the ARGO-YBJ experiment

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., C., Baccia, K. Z., Baob, F., Baronec, B., Bartolic, P., Bernardinid, S., Bussinoa, E., Callonic, B. Y., Caoe, R., Cardarellif, S., Catalanottic, S., Cavalierec, F., Cesaronid, P., Cretid, Danzengluobug, B., D’Ettorre Piazzolic, M., De Vincenzia, T., Di Girolamoc, G., Di Sciascioc, Z. Y., Fengh, Y., Fue, X. Y., Gaoi, Q. X., Gengi, H. W., Guog, H. H., Hej, M., Hee, Q., Huangh, M., Iacovaccic, N., Iuccia, H. Y., Jaih, C. L., Jingj, F. M., Konge, H. H., Kuangj, Labacireng, B., Lib, J. Y., Lie, Z. Q., Liui, H., Luj, X. H., Maj, G., Mancarellad, Mari, Stefano Maria, A, G., Marsellad, D., Martellod, X. R., Mengg, L., Milanoc, J., Mui, M., Panareod, Z. R., Pengj, P., Pistillia, L., Saggesec, R., Santonicof, P. R., Shenj, C., Stanescua, L. R., Sunb, S. C., Sunb, A., Surdod, Y. H., Tanj, S., Vernettok, C. R., Wange, H., Wangj, H. Y., Wangj, Y. N., Weib, H. T., Yangj, Q. K., Yaob, G. C., Yuh, X. D., Yueb, A. F., Yuang, M., Zhaj, H. M., Zhangj, J. L., Zhangj, N. J., Zhange, X. Y., Zhange, Zhaxisangzhug, Zhaxicireng, Q. Q., Zhuj, Aharonian, FA, Volk, HJ, Horns, D, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, Resistive touchscreen, Detector, Cosmic ray, Extensive Air Shower, Astrophysics, Full coverage, Cosmic Ray, Argo-Ybj, Gamma detection, Single layer, Argo, Remote sensing, Gamma ray detection
Abstract: The ARGO‐YBJ experiment, under construction at the Yangbaijing Laboratory (P.R. China, 4300 m a.s.l.), is a full coverage detector of dimension 74 × 78 m2 made by a single layer of Resistive Plate Counters. About 10% of the final active area (∼ 700 m2) is in stable operation to check the detector performance and the reconstruction algorithms. In this paper the status of the experiment and the analysis of the first data are presented.
Published: 2005

36. New MACRO results on atmospheric neutrino oscillations

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, Zaccheo, N., G. Giacomelli, and A. Margiotta
Subjects: Nuclear and High Energy Physics, Particle physics, NEUTRINO OSCILLATIONS, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Elementary particle, MACRO, NEUTRINO MASS, Underground detectors, High Energy Physics - Experiment, Nuclear physics, Atmospheric Neutrino, High Energy Physics - Experiment (hep-ex), Neutrino oscillation, Physics, Muon, MONTE CARLO METHODS, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Event (particle physics), PARTICLE DETECTORS
Abstract: The final results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~3 and ~50 GeV. Multiple Coulomb Scattering of the high energy muons in absorbers was used to estimate the neutrino energy of each event. The angular distributions, the L/E_nu distribution, the particle ratios and the absolute fluxes all favour nu_mu --> nu_tau oscillations with maximal mixing and Delta m^2 =0.0023 eV^2. A discussion is made on the Monte Carlos used for the atmospheric neutrino flux. Some results on neutrino astrophysics are also briefly discussed., Invited Paper at the NANP03 Int. Conf., Dubna, 2003
Published: 2004

37. MACRO results on atmospheric neutrino oscillations

Author: Ambrosio M, Antolini R, Assiro R, Auriemma G, Bakari D, Baldini A, Barbarino GC, Barbarito E, Barish BC, Battistoni G, Becherini Y, Bellotti R, Bemporad C, Bernardini P, Bilokon H, Bisi V, Bloise C, Bottazzi E, Bower C, Brigida M, Cafagna F, Calicchio M, Campana D, Candela A, Carboni M, Cecchini S, Cei F, Ceres A, Chiarella V, Choudhary BC, Coutu S, Cozzi M, Creti P, De Cataldo G, Degli Esposti L, Dekhissi H, De Marzo C, De Mitri I, Derkaoui J, De Vincenzi M, Di Credico A, Di Ferdinando D, Diotallevi R, Erriquez O, Favuzzi C, Forti C, Fusco P, Gebhard M, Giacomelli G, Giacomelli R, Giannini G, Giglietto N, Giorgini M, Giuliani R, Goretti M, Grassi M, Grau H, Gray L, Grillo A, Guarino F, Gustavino C, Habig A, Hanson J, Hanson K, Hawthorne A, Heinz R, Hong JT, Iarocci E, Katsavounidis E, Katsavounidis I, Kearns E, Kim H, Kyriazopoulou S, Lamanna E, Lane C, Leone A, Levin DS, Lipari P, Liu G, Liu R, Longley NP, Longo MJ, Loparco F, Maaroufi F, Mancarella G, Mandrioli G, Manzoor S, Marrelli V, Margiotta A, Marini A, Martello D, Marzari Chiesa A, Mazziotta MN, Michael DG, Mikheyev S, Miller L, Monacelli P, Mongelli M, Montaruli T, Monteno M, Mossbarger L, Mufson S, Musser J, Nicolo D, Nolty R, Okada C, Orsini M, Orth C, Osteria G, Ouchrif M, Palamara O, Parlati S, Patera V, Patrizii L, Pazzi R, Peck CW, Pellizzoni G, Perchiazzi M, Perrone L, Petrakis J, Petrera S, Pignatano N, Pinto C, Pistilli P, Popa V, Raino A, Reynoldson J, Ronga F, Rrhioua A, Sacchetti A, Saggese P, Satriano C, Satta L, Scapparone E, Scholberg K, Sciubba A, Serra P, Sioli M, Sirri G, Sitta M, Sondergaard S, Spinelli P, Spinetti M, Spurio M, Stalio S, Steinberg R, Stone JL, Sulak LR, Surdo A, Tarle G, Togo V, Vakili M, Valieri C, Walter CW, Webb R, Zaccheo N., BUSSINO, Severino Angelo Maria, G.GIACOMELLI, A. MARGIOTTA, Ambrosio, M, Antolini, R, Assiro, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barbarito, E, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bottazzi, E, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Candela, A, Carboni, M, Cecchini, S, Cei, F, Ceres, A, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, Creti, P, De Cataldo, G, Degli Esposti, L, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Di Ferdinando, D, Diotallevi, R, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Gebhard, M, Giacomelli, G, Giacomelli, R, Giannini, G, Giglietto, N, Giorgini, M, Giuliani, R, Goretti, M, Grassi, M, Grau, H, Gray, L, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, J, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Leone, A, Levin, D, Lipari, P, Liu, G, Liu, R, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Marrelli, V, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Mongelli, M, Montaruli, T, Monteno, M, Mossbarger, L, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orsini, M, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Pellizzoni, G, Perchiazzi, M, Perrone, L, Petrakis, J, Petrera, S, Pignatano, N, Pinto, C, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Sacchetti, A, Saggese, P, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Sondergaard, S, Spinelli, P, Spinetti, M, Spurio, M, Stalio, S, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Valieri, C, Walter, Cw, Webb, R, and Zaccheo, N.
Subjects: Normalization (statistics), Physics, Particle physics, Muon, NEUTRINO OSCILLATIONS, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, FOS: Physical sciences, atmospheric neutrinos, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Neutrino interaction, Distribution (mathematics), High Energy Physics::Experiment, Neutrino mixing, Neutrino, Cosmic rays, Engineering (miscellaneous), Event (particle physics), Mixing (physics), Energy (signal processing)
Abstract: The final results of the MACRO experiment on atmospheric neutrino oscillations are presented. The data concern different event topologies with average neutrino energies of ~ 3 and ~ 50 GeV. Multiple Coulomb Scattering of the high energy muons was used to estimate the neutrino energy event by event. The angular distributions, the L/E_nu distribution, the particle ratios and the absolute fluxes all favour nu_mu --> nu_tau oscillations with maximal mixing and Delta m^2 ~ 0.0023 eV^2. Emphasis is given to measured ratios which are not affected by Monte Carlo (MC) absolute normalization; a discussion is made on MC uncertainties., 3 pages, 6 figures, paper presented at the HEP EPS Conf., Aachen, Germany, July 2003 Added references (19/08/2004)
Published: 2004

38. Multiscale image analysis applied to γ/h discrimination for VHE gamma-ray astronomy with ARGO-YBJ

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, DE MITRI, Ivan, Salamida, F., on behalf of the ARGO YBJ, Collaboration, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Gamma Ray Astronomy, Nuclear and High Energy Physics, astronomia gamma, Astrophysics::High Energy Astrophysical Phenomena, processamento di immagini, FOS: Physical sciences, Cosmic ray, Astrophysics, Cosmic Ray, Particle identification, Particle detector, Argo-Ybj, Raggi cosmici, Instrumentation, Physics, Gamma-ray astronomy, Astrophysics (astro-ph), Detector, Multifractal system, Computational physics, Multiscale analysis, Measuring instrument, High Energy Physics::Experiment, Event (particle physics)
Abstract: Intrinsic differences in the processes involved in the development of electromagnetic and hadronic showers in the atmosphere have been evidenced by means of a careful analysis of the event image given by the ARGO-YBJ detector. The images have been analyzed at different length scales and their multifractal nature has been studied. The use of the multiscale approach together with a properly designed and trained Artificial Neural Network, allowed us to obtain a good gamma/hadron discrimination power. If confirmed by further studies on different event cathegories, this result would allow to nearly double the detector sensitivity to gamma ray sources., 10 pages, 5 figures, Presented at the "Incontro Nazionale di Astrofisica delle Alte Energie", Rome 15-16 May 2003
Published: 2004

39. Results of the ARGO-YBJ test experiment

Author: Bacci, C., Bao, K. Z., Barone, Fabrizio, Bartoli, B., Bastieri, D., Bernardini, P., Buonomo, R., Bussino, S., Calloni, E., Cao, B. Y., Cardarelli, R., Catalanotti, S., Cavaliere, A., Cesaroni, F., Creti, P., Danzengluobu, D'Ettorre Piazzoli, B., De Vincenzi, M., Di Girolamo, T., Di Sciascio, G., Feng, Z. Y., Fu, Y., Gao, X. Y., Geng, Q. X., Guo, H. W., H. H., He, He, M., Huang, Q., Iacovacci, M., Iucci, N., Jai, H. Y., Kong, F. M., Kuang, H. H., Labaciren, Li, B., J. Y., Li, Liu, Z. Q., Lu, H., X. H., Ma, Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mei, D. M., Meng, X. R., Milano, L., Morselli, A., Mu, J., Oliviero, M., Padovani, P., Panareo, M., Parisi, M., Pellizzoni, G., Peng, Z. R., Pistilli, P., Santonico, R., Sartori, G., Sbarra, C., Severino, G., Shen, P. R., Sparvoli, R., Stanescu, C., Su, J., Sun, L. R., Sun, S. C., Surdo, A., Tan, Y. H., Vernetto, S., Vietri, M., Wang, C. R., Wang, H., Wang, H. Y., Wei, Y. N., Yang, H. T., Yao, Q. K., G. C., Yu, Yue, X. D., Yuan, A. F., Zhang, H. M., Zhang, J. L., Zhang, N. J., Zhang, T. J., Zhang, X. Y., Zhaxisangzhu, Zhaxiciren, Zhu, Q. Q., Bacci, C, Bao, Kz, Barone, F, Bartoli, B, Bernardini, Paolo, Bussino, S, Calloni, E, Cao, By, Cardarelli, R, Catalanotti, S, Cavaliere, S, Cesaroni, F, Creti, P, Danzengluobu, Piazzoli, Bd, DE VINCENZI, M, DI GIROLAMO, T, DI SCIASCIO, G, Feng, Zy, Fu, Y, Gao, Xy, Geng, Qx, Guo, Hw, He, Hh, He, M, Huang, Q, Iacovacci, M, Iucci, N, Jai, Hy, Jing, Cl, Kong, Fm, Kuang, Hh, Labaciren, Li, B, Li, Jy, Liu, Zq, Lu, H, Ma, Xh, Mancarella, Giovanni, Mari, Sm, Marsella, Giovanni, Martello, Daniele, Meng, Xr, Milano, L, Mu, J, Panareo, Marco, Peng, Zr, Pistilli, P, Santonico, R, Shen, Pr, Stanescu, C, Sun, Lr, Sun, Sc, Surdo, A, Tan, Yh, Vernetto, S, Wang, Cr, Wang, H, Wang, Hy, Wei, Yn, Yang, Ht, Yao, Qk, Yu, Gc, Yue, Xd, Yuan, Af, Zha, M, Zhang, Hm, Zhang, Jl, Zhang, Nj, Zhang, Xy, Zhaxisangzhu, Zhaxiciren, and Zhu, Qq
Subjects: Astroparticle physics, Physics, Resistive touchscreen, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Cosmic ray, Gamma-ray astronomy, Gamma-ray Astronomy, Cosmic rays, Ground-based Astronomy, Nuclear physics, Angular distribution, High Energy Physics::Experiment, Argo, Time profile
Abstract: A resistive plate counters (RPCs) carpet of ∼50 m 2 has been put in operation in the Yangbajing Laboratory (Tibet, P.R. China) at 4300 m a.s.l., in order to study the RPCs performance at high altitude and the detector capability of imaging the EAS disc. This test has been performed in view of an enlarged use of RPCs for the ARGO-YBJ experiment. This experiment will be devoted to a wide range of fundamental issues in cosmic rays and astroparticle physics, including in particular γ-ray astronomy and γ-ray bursts physics at energies ⩾100 GeV. In this paper we present and discuss the procedures adopted to calibrate the detector and reconstruct the shower direction. Results concerning many shower features as the angular distribution, the density spectrum, the time profile of the shower front, are found well consistent with the expectation.
Published: 2002

40. ARGO-YBJ resolution and sensitivity to detect gamma rays sources

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Martello, Daniele, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Gamma Ray Astronomy, Physics, Resistive touchscreen, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Resolution (electron density), Gamma ray, Extensive Air Shower, Gamma-ray astronomy, Full coverage, Argo-Ybj, Optics, Angular resolution, Sensitivity (control systems), business, Argo
Abstract: ARGO-YBJ is a full coverage EAS array consisting of a ∼ 74×78 m2 layer of RPCs (Resistive Plate Counters). ARGO-YBJ will provide a detailed spacetime picture of the shower front allowing to face a wide range of fundamental issues including the study of gamma-rays (100 GeV−10 TeV) from point sources. A detailed simulation has been performed to estimate the angular resolution and the sensitivity of the apparatus. We present the results obtained and (as an example) the sensitivity of ARGO-YBJ to detect a known gamma rays source (CRAB).
Published: 2001
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41. The monitoring system of the ARGO-YBJ data acquisition

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, BUSSINO, Severino Angelo Maria, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., and Mastroianni, Stefano
Subjects: Data acquisition system, Physics, Nuclear and High Energy Physics, Data collection, Physics::Instrumentation and Detectors, Network packet, Astrophysics::High Energy Astrophysical Phenomena, EAS detector, Detector, Real-time computing, Astrophysics::Instrumentation and Methods for Astrophysics, Decoupling (cosmology), Dead time, Argo-Ybj, Data acquisition, Cosmic-ray observatory, Instrumentation, Throughput (business)
Abstract: The ARGO-YBJ detector has been completely installed at the YangBaJing High Altitude Cosmic Ray Observatory (Tibet, China), at 4300 m a.s.l., and is taking data with a trigger rate of about 4 kHz and a dead time of about 4%. The ARGO-YBJ Data Acquisition System is based on a two-layer readout architecture implementing an event-driven data collection. In order to sustain a high data throughput and have a good readout efficiency or keep the dead time as low as possible, the decoupling FIFOs have been housed on the data packet processing modules. In this paper, the hardware solution to monitor the DAQ system and to track in real-time anomalous data transfers is presented.
Published: 2010
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42. Results from the ARGO-YBJ experiment

Author: Aielli G, Bacci C, Bartoli B, Bernardini P, Bi XJ, Bleve C, Branchini P, Budano A, Calabrese Melcarne AK, Camarri P, Cao Z, Cappa A, Cardarelli R, Catalanotti S, Cattaneo C, Celio P, Chen SZ, Chen TL, Chen Y, Cheng N, Creti P, Cui SW, Dai BZ, D'Ali Staiti G, Danzengluobu, Dattoli M, De Mitri I, D'Ettorre Piazzoli B, De Vincenzi M, Di Girolamo T, Ding XH, Di Sciascio G, Feng CF, Feng Zhao Yang, Feng Zhen Yong, Galeazzi F, Galeotti P, Gargana R, Gou QB, Guo YQ, He HH, Hu Haibing, Hu Hong Bo, Huang Q, Iacovacci M, Iuppa R, James I, Jia HY, Labaciren, Li HJ, Li JY, Li XX, Liberti B, Liguori G, Liu C, Liu CQ, Liu MY, Liu J, Lu H, Ma XH, Mancarella G, MARI, Stefano Maria, Marsella G, Martello D, Mastroianni S, Meng XR, Montini P, Ning CC, Pagliaro A, Panareo M, Perrone L, Pistilli P, Qu XB, Rossi E, Ruggieri F, Saggese L, Salvini P, Santonico R, Shen PR, Sheng XD, Shi F, Stanescu C, Surdo A, Tan YH, Vallania P, Vernetto S, Vigorito C, Wang B, Wang H, Wu CY, Wu HR, Xu B, Xue L, Yan YX, Yang QY, Yang XC, Yuan AF, Zha M, Zhang HM, Zhang Ji Long, Zhang Jian Li, Zhang L, Zhang P, Zhang XY, Zhang Y, Zhaxisangzhu, Zhou XX, Zhu FR, Zhu QQ, Zizzi G., BUSSINO, Severino Angelo Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, P., Celio, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Ali´ Staiti, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, P., Galeotti, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Huo, Hongbo, Hue, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilongzhang, Jianlizhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, and De Vincenzi, M
Subjects: Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Blazar, Argo-Ybj, RPCS, Nuclear physics, Cosmic Ray Physic, Air showers, Guard ring, Gamma ray sources, Blazar, Air shower, Instrumentation, Argo, Mathematical Physics, Astroparticle physics, Physics, Resistive touchscreen, Resistive-plate chambers, Large detector systems for particle and astroparticle physics, Gamma ray source, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma-Ray Astronomy, Performance of High Energy Physics Detectors, Air shower, Single layer
Abstract: ""The full coverage extensive air shower detector ARGO-YBJ, located in Tibet at 4300 m of altitude, has monitored the sky at gamma ray energy E>0.6TeV in the declination band from -10° to 70°. In 424 days the Crab Nebula and Mrk421 have been detected with a significance, respectively, of 7.0 and 8.0 standard deviations. The analysis of the cosmic ray background in the same sky band, has revealed the existence of a significant excess of the cosmic ray flux in two localized regions of angular size 10°30°, confirming previous indications. The origin of such excesses is still unexplained. Concerning the gamma ray sources, the measured spectrum of the Crab Nebula is dN\\\/dE=(3.7±0.8)×10-11E-2.67±0.25photonscm-2s-1TeV-1, in agreement with other experiments. During 2008 the observed Mrk421 flux was highly variable, with the strongest flares in MarchJune, in good correlation with X-ray data. One of the most intense flares occurred in the first half of June and has been deeply studied by different detectors in the energy range from optical to 100 MeV gamma rays, but only partially up to TeV energies, since the moonlight hampered the Cherenkov telescope measurements during the second and most intense part of the emission. Our data complete these observations, with the detection of a signal of intensity of about 7 Crab units on June 1113, with a statistical significance of 4.2 standard deviations. The observed flux is consistent with a prediction made in the framework of the Synchrotron Self-Compton model, in which the flare is caused by a rapid acceleration of leptons in the jet. ""
Published: 2013
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43. TeV gamma-ray survey of the Northern sky using the ARGO-YBJ detector

Author: Argo-Ybj, The Collaboration, Bartoli, B., Bernardini, P., Bi, X. J., Bolognino, I., Branchini, P., Budano, A., Calabrese Melcarne, A. K., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, S., Chen, S. Z., Chen, T. L., Chen, Y., Creti, P., Cui, S. W., Dai, B. Z., Damone, A., Danzengluobu, Mitri, I., Dettorre Piazzoli, B., Di Girolamo, T., Ding, X. H., Di Sciascio, G., Feng, C. F., Feng, Zhaoyang, Feng, Zhenyong, Gou, Q. B., Guo, Y. Q., He, H. H., Hu, Haibing, Hu, Hongbo, Huang, Q., Iacovacci, M., Iuppa, R., Jia, H. Y., Labaciren, Li, H. J., Li, J. Y., Li, X. X., Liguori, G., Liu, C., Liu, C. Q., Liu, J., Liu, M. Y., Lu, H., Ma, L. L., Ma, X. H., Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Panareo, M., Panico, B., Perrone, L., Pistilli, P., Ruggieri, F., Salvini, P., Santonico, R., Sbano, S. N., Shen, P. R., Sheng, X. D., Shi, F., Surdo, A., Tan, Y. H., Piero Vallania, Vernetto, S., Vigorito, C., Wang, B., Wang, H., Wu, C. Y., Wu, H. R., Xu, B., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhao, J., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., Bartoli, Bruno, Bernardini, P., X. J., Bi, Bolognino, I., Branchini, P., Budano, A., Calabrese Melcarne, A. K., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, Sergio, Chen, S. Z., Chen, T. L., Chen, Y., Creti, P., Cui, S. W., Dai, B. Z., D'Amone, A., Danzengluobu, De Mitri, I., D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Ding, X. H., Di Sciascio, G., Feng, C. F., Zhaoyang, Feng, Zhenyong, Feng, Gou, Q. B., Guo, Y. Q., H. H., He, Haibing, Hu, Hongbo, Hu, Huang, Q., Iacovacci, Michele, Iuppa, R., Jia, H. Y., Labaciren, H. J., Li, J. Y., Li, X. X., Li, Liguori, G., Liu, C., Liu, C. Q., Liu, J., Liu, M. Y., Lu, H., L. L., Ma, X. H., Ma, Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Panareo, M., Panico, B., Perrone, L., Pistilli, P., Ruggieri, F., Salvini, P., Santonico, R., Sbano, S. N., Shen, P. R., Sheng, X. D., Shi, F., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, B., Wang, H., C. Y., Wu, H. R., Wu, Xu, B., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Jilong, Zhang, Jianli, Zhang, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhao, J., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, and G., B. Bartoli, BERNARDINI, Paolo, X. J. Bi, I. Bolognino, P. Branchini, A. Budano, A. K. Calabrese Melcarne, P. Camarri, Z. Cao, R. Cardarelli, S. Catalanotti, S. Z. Chen, T. L. Chen, Y. Chen, P. Creti, S. W. Cui, B. Z. Dai, D'AMONE, ANTONIO, DE MITRI, Ivan, B. D'Ettorre Piazzoli, T. Di Girolamo, X. H. Ding, G. Di Sciascio, C. F. Feng, Zhaoyang Feng, Zhenyong Feng, Q. B. Gou, Y. Q. Guo, H. H. He, Haibing Hu, Hongbo Hu, Q. Huang, M. Iacovacci, R. Iuppa, H. Y. Jia, H. J. Li, J. Y. Li, X. X. Li, G. Liguori, C. Liu, C. Q. Liu, J. Liu, M. Y. Liu, H. Lu, L. L. Ma, X. H. Ma, MANCARELLA, Giovanni, S. M. Mari, MARSELLA, GIOVANNI, MARTELLO, Daniele, S. Mastroianni, P. Montini, C. C. Ning, PANAREO, Marco, B. Panico, PERRONE, Lorenzo, P. Pistilli, F. Ruggieri, P. Salvini, R. Santonico, S. N. Sbano, P. R. Shen, X. D. Sheng, F. Shi, A. Surdo, Y. H. Tan, P. Vallania, S. Vernetto, C. Vigorito, B. Wang, H. Wang, C. Y. Wu, H. R. Wu, B. Xu, L. Xue, Q. Y. Yang, X. C. Yang, Z. G. Yao, A. F. Yuan, M. Zha, H. M. Zhang, Jilong Zhang, Jianli Zhang, L. Zhang, P. Zhang, X. Y. Zhang, Y. Zhang, J. Zhao, X. X. Zhou, F. R. Zhu, Q. Q. Zhu, G. Zizzi, B., Bartoli, Bernardini, Paolo, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, R., Cardarelli, S., Catalanotti, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, D'Amone, Antonio, B., D'Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Q. B., Gou, Y. Q., Guo, Q., Huang, M., Iacovacci, R., Iuppa, H. Y., Jia, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, F., Ruggieri, P., Salvini, R., Santonico, S. N., Sbano, P. R., Shen, X. D., Sheng, F., Shi, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, B., Xu, L., Xue, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, J., Zhao, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Mari, Stefano Maria, and The ARGO YBJ, Collaboration
Subjects: Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, FOS: Physical sciences, Flux, Field of view, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Gamma rays: general – surveys, 01 natural sciences, Declination, 0103 physical sciences, Absorption (logic), 010303 astronomy & astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy and Astrophysics, general – su [gamma rays], Air shower, Extragalactic background light, 13. Climate action, Space and Planetary Science, Sky, general – surveys [Gamma rays], Astrophysics - High Energy Astrophysical Phenomena
Abstract: The ARGO-YBJ detector is an extensive air shower array that has been used to monitor the northern $\gamma$-ray sky at energies above 0.3 TeV from 2007 November to 2013 January. In this paper, we present the results of a sky survey in the declination band from $-10^{\circ}$ to $70^{\circ}$, using data recorded over the past five years. With an integrated sensitivity ranging from 0.24 to $\sim$1 Crab units depending on the declination, six sources have been detected with a statistical significance greater than 5 standard deviations. Several excesses are also reported as potential $\gamma$-ray emitters. The features of each source are presented and discussed. Additionally, $95\%$ confidence level upper limits of the flux from the investigated sky region are shown. Specific upper limits for 663 GeV $\gamma$-ray AGNs inside the ARGO-YBJ field of view are reported. The effect of the absorption of $\gamma$-rays due to the interaction with extragalactic background light is estimated., Comment: 30 pages, 13 figures, Accepted for publication by ApJ

44. Intrinsic linearity of bakelite Resistive Plate Chambers operated in streamer mode

Author: M. Iacovacci, L. L. Ma, X. H. Ma, Hongbo Hu, X. Y. Zhang, Minghui Liu, L. Perrone, Zihuang Cao, P. Creti, Haifeng Li, R. Santonico, Yicheng Guo, J. B. Zhao, P. Salvini, A. Budano, Chang-Chun Ning, Cunfeng Feng, Zhaoyang Feng, Fudong Shi, Z. G. Yao, C. Y. Wu, B. D'Ettorre Piazzoli, H. Lu, F. R. Zhu, S. Mastroianni, Danzengluobu, G. Di Sciascio, I. De Mitri, S. M. Mari, X. C. Yang, Piero Vallania, T. L. Chen, Zhaxiciren, G. Liguori, L. Xue, Paolo Camarri, Zhenyong Feng, B. Bartoli, C. X. Liu, H. W. Wang, Zhaxisangzhu, J. K. K. Liu, H. Y. Jia, Longzhou Zhang, Q. Q. Zhu, M. Zha, X. J. Bi, M. Panareo, G. Mancarella, S. W. Cui, S. Z. Chen, T. Di Girolamo, H. R. Wu, B. Z. Dai, F. Ruggieri, P. Branchini, Q. B. Gou, A. F. Yuan, Labaciren, Q. Y. Yang, G. Zizzi, H. H. He, Y. H. Tan, A. D'Amone, X. D. Sheng, Paolo Bernardini, Paolo Montini, R. Iuppa, R. Cardarelli, G. Marsella, S. Vernetto, Pengnian Shen, S. Catalanotti, P. Pistilli, H. M. Zhang, X. X. Zhou, A. Surdo, Carlo Vigorito, Haibing Hu, Y. Zhang, D. Martello, Bartoli B., Bernardini P., Bi X. J., Branchini P., Budano A., Camarri P., Cao Z., Cardarelli R., Catalanotti S., Chen S. Z., Chen T. L., Creti P., Cui S. W., Dai B. Z., D'Amone A., Danzengluobu, De Mitri I., D'Ettorre Piazzoli B., Di Girolamo T., Di Sciascio G., Feng C. F., Feng Z., Gou Q. B., Guo Y. Q., He H. H., Hu H., Iacovacci M., Iuppa R., Jia H. Y., Labaciren, Li H. J., Liguori G., Liu C., Liu J., Liu M. Y., Lu H., Ma L. L., Ma X. H., Mancarella G., Mari S. M., Marsella G., Martello D., Mastroianni S., Montini P., Ning C. C., Panareo M., Perrone L., Pistilli P., Ruggieri F., Salvini P., Santonico R., Shen P. R., Sheng X. D., Shi F., Surdo A., Tan Y. H., Vallania P., Vernetto S., Vigorito C., Wang H., Wu C. Y., Wu H. R., Xue L., Yang Q. Y., Yang X. C., Yao Z. G., Yuan A. F., Zha M., Zhang H. M., Zhang L., Zhang X. Y., Zhang Y., Zhao J., Zhaxiciren Zhaxisangzhu, Zhou X. X., Zhu F. R., Zhu Q. Q., Zizzi G., Bartoli, B., Bernardini, P., Bi, X. J., Branchini, P., Budano, A., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, S., Chen, S. Z., Chen, T. L., Creti, P., Cui, S. W., Dai, B. Z., D'Amone, A., De Mitri, I., D'Ettorre Piazzoli, B., Di Girolamo, T., Di Sciascio, G., Feng, C. F., Feng, Z., Gou, Q. B., Guo, Y. Q., He, H. H., Hu, H., Iacovacci, M., Iuppa, R., Jia, H. Y., Li, H. J., Liguori, G., Liu, C., Liu, J., Liu, M. Y., Lu, H., Ma, L. L., Ma, X. H., Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Panareo, M., Perrone, L., Pistilli, P., Ruggieri, F., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, H., Wu, C. Y., Wu, H. R., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, L., Zhang, X. Y., Zhang, Y., Zhao, J., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., D’Amone, A., Danzengluobu, Null, D’Ettorre Piazzoli, B., Feng, Zhaoyang, Feng, Zhenyong, Hu, Haibing, Hu, Hongbo, Labaciren, Null, Zhaxiciren, Null, and Zhaxisangzhu, Null
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Intrinsic linearity, Streamer mode, Cosmic ray, Calorimetry, 01 natural sciences, chemistry.chemical_compound, Optics, 0103 physical sciences, Bakelite, Particle density, 010303 astronomy & astrophysics, Instrumentation, Physics, Resistive touchscreen, 010308 nuclear & particles physics, business.industry, Detector, Settore FIS/01 - Fisica Sperimentale, Linearity, RPC detector, Streamer mode, Intrinsic linearity, Calorimetry, chemistry, Particle, Physics::Accelerator Physics, RPC detector, business, Beam (structure)
Abstract: Resistive Plate Chambers have largely been used in High Energy Physics and Cosmic Ray research. In view of using this detector for calorimetry applications it is important to know the maximum measurable particle density, or its intrinsic linearity limit, which is tightly related to the dimension of the discharge region. In this paper we report the results of measurements performed at the Beam Test Facility (INFN National Laboratory of Frascati, Italy) where the intrinsic linearity of bakelite RPCs operated in streamer mode has been tested at different impinging particle densities.
Published: 2019

45. OBSERVATION OF THE TeV GAMMA-RAY SOURCE MGRO J1908+06 WITH ARGO-YBJ

Author: B. Bartoli1, 2, P. Bernardini3, 4, X. J. Bi5, C. Bleve3, I. Bolognino6, 7, P. Branchini8, A. Budano8, A. K. Calabrese Melcarne9, P. Camarri10, Z. Cao5, R. Cardarelli11, S. Catalanotti1, C. Cattaneo7, S. Z. Chen5, T. L. Chen12, Y. Chen5, P. Creti4, S. W. Cui13, B. Z. Dai14, G. D’Al´ı Staiti15, 16, Danzengluobu12, M. Dattoli17, 18, 19, I. De Mitri3, B. D’Ettorre Piazzoli1, T. Di Girolamo1, X. H. Ding12, G. Di Sciascio11, C. F. Feng20, Zhaoyang Feng5, Zhenyong Feng21, F. Galeazzi8, E. Giroletti6, Q. B. Gou5, Y. Q. Guo5, H. H. He5, Haibing Hu12, Hongbo Hu5, Q. Huang21, M. Iacovacci1, R. Iuppa10, I. James8, H. Y. Jia21, Labaciren12, H. J. Li12, J. Y. Li20, X. X. Li5, G. Liguori6, C. Liu5, C. Q. Liu14, J. Liu14, M. Y. Liu12, H. Lu5, X. H. Ma5, G. Mancarella3, 8, 22, G. Marsella4, D. Martello3, S. Mastroianni2, P. Montini8, C. C. Ning12, A. Pagliaro16, M. Panareo4, B. Panico10, L. Perrone4, P. Pistilli8, X. B. Qu20, F. Ruggieri8, P. Salvini7, R. Santonico10, P. R. Shen5, X. D. Sheng5, F. Shi5, C. Stanescu8, A. Surdo4, Y. H. Tan5, P. Vallania17, S. Vernetto17, C. Vigorito18, B. Wang5, H. Wang5, C. Y. Wu5, H. R. Wu5, B. Xu21, L. Xue20, Y. X. Yan14, Q. Y. Yang14, X. C. Yang14, Z. G. Yao5, A. F. Yuan12, M. Zha5, H. M. Zhang5, Jilong Zhang5, Jianli Zhang5, L. Zhang14, P. Zhang14, X. Y. Zhang20, Y. Zhang5, Zhaxiciren12, Zhaxisangzhu12, X. X. Zhou21, F. R. Zhu21, Q. Q. Zhu5, G. Zizzi91 Dipartimento di Fisica dell’Universit`a di Napoli 'Federico II, ' Complesso Universitario di Monte Sant’Angelo, via Cinthia, 80126 Napoli, Italy2 Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di Monte Sant’Angelo, Italy3 Dipartimento di Matematica e. Fisica 'Ennio De Giorgi, ' Universit`a del Salento, via per Arnesano, 73100 Lecce, Italy4 Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, Italy5 Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918, 100049 Beijing, China6 Dipartimento di Fisica Nucleare e. Teorica dell’Universit`a di Pavia, via Bassi 6, 27100 Pavia, Italy7 Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Italy8 Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, via della Vasca Navale 84, 00146 Roma, Italy9 Istituto Nazionale di Fisica Nucleare CNAF, Viale Berti Pichat 6/2, 40127 Bologna, Italy10 Dipartimento di Fisica dell’Universit`a di Roma 'Tor Vergata, ' via della Ricerca Scientifica 1, 00133 Roma, Italy11 Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, via della Ricerca Scientifica 1, Italy12 Tibet University, 850000 Lhasa, Xizang, China13 Hebei Normal University, Shijiazhuang 050016, Hebei, China14 Yunnan University, 2 North Cuihu R.d., 650091 Kunming, Yunnan, China15 Dipartimento di Fisica, Universit`a degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy16 Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Viale A. Doria 6, 95125 Catania, Italy17 Osservatorio Astrofisico di Torino dell’Istituto Nazionale di Astrofisica, corso Fiume 4, 10133 Torino, Italy18 Istituto Nazionale di Fisica Nucleare, Sezione di Torino, via P. Giuria 1, 10125 Torino, Italy19 Dipartimento di Fisica dell’Universit`a di Torino, Italy20 Shandong University, 250100 Jinan, Shandong, China21 Southwest Jiaotong University, 610031 Chengdu, Sichuan, China22 Dipartimento di Fisica dell’Universit`a 'Roma Tre, ' via della Vasca Navale 84, Italy23 Istituto di Astrofisica Spaziale e. Fisica Cosmica dell’Istituto Nazionale di Astrofisica, via La Malfa 153, 90146 Palermo, Italy, MARI, Stefano Maria, Bartoli, B, Bernardini, P, Bi, XJ, Bleve, C, Bolognino, I, Branchini, P, Budano, A, Calabrese Melcarne, AK, Camarri, P, Cao, Z, Cardarelli, R, Catalanotti, S, Cattaneo, C, Chen, SZ, Chen, TL, Chen, Y, Creti, P, Cui, SW, Dai, BZ, D’Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D’Ettorre Piazzoli, B, Di Girolamo, T, Ding, XH, Di Sciascio, G, Feng, CF, Feng, ZYa, Feng, ZYo, Galeazzi, F, Giroletti, E, Gou, QB, Guo, YQ, He, HH, Hu, HBi, Hu, HBo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, HY, Labaciren, Li, HJ, Li, JY, Li, XX, Liguori, G, Liu, C, Liu, CQ, Liu, J, Liu, MY, Lu, H, Ma, XH, Mancarella, G, Mari, SM, Marsella, G, Martello, D, Mastroianni, S, Montini, P, Ning, CC, Pagliaro, A, Panareo, M, Panico, B, Perrone, L, Pistilli, P, Qu, XB, Ruggieri, F, Salvini, P, Santonico, R, Shen, PR, Sheng, XD, Shi, F, Stanescu, C, Surdo, A, Tan, YH, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, CY, Wu, HR, Xu, B, Xue, L, Yan, YX, Yang, QY, Yang, XC, Yao, ZG, Yuan, AF, Zha, M, Zhang, HM, Zhang, JLi, Zhang, JLo, Zhang, L, Zhang, P, Zhang, XY, Zhang, Y, Zhaxiciren, Zhaxisangzhu, Zhou, XX, Zhu, FR, Zhu, QQ, Zizzi, G, Bartoli, Bruno, Bernardini, P., X. J., Bi, Bleve, C., Bolognino, I., Branchini, P., Budano, A., Calabrese Melcarne, A. K., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, Sergio, Cattaneo, C., Chen, S. Z., Chen, T. L., Chen, Y., Creti, P., Cui, S. W., Dai, B. Z., D'Al? Staiti, G., Dattoli, M., De Mitri, I., D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Ding, X. H., Di Sciascio, G., Feng, C. F., Zhaoyang, Feng, Zhenyong, Feng, Galeazzi, F., Giroletti, E., Gou, Q. B., Guo, Y. Q., H. H., He, Haibing, Hu, Hongbo, Hu, Huang, Q., Iacovacci, Michele, Iuppa, R., James, I., Jia, H. Y., H. J., Li, J. Y., Li, X. X., Li, Liguori, G., Liu, C., Liu, C. Q., Liu, J., Liu, M. Y., Lu, H., X. H., Ma, Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Pagliaro, A., Panareo, M., Panico, B., Perrone, L., Pistilli, P., X. B., Qu, Ruggieri, F., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Stanescu, C., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, B., Wang, H., C. Y., Wu, H. R., Wu, Xu, B., Xue, L., Yan, Y. X., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Jilong, Zhang, Jianli, Zhang, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., B., Bartoli1, P., Bernardini3, X. J., Bi5, C., Bleve3, I., Bolognino6, P., Branchini8, A., Budano8, A. K., Calabrese Melcarne9, P., Camarri10, Z., Cao5, R., Cardarelli11, S., Catalanotti1, C., Cattaneo7, S. Z., Chen5, T. L., Chen12, Y., Chen5, P., Creti4, S. W., Cui13, B. Z., Dai14, G., D’Al´ı Staiti15, 16, Danzengluobu12, M., Dattoli17, 18, 19, I., De Mitri3, B., D’Ettorre Piazzoli1, T., Di Girolamo1, X. H., Ding12, G., Di Sciascio11, C. F., Feng20, Zhaoyang, Feng5, Zhenyong, Feng21, F., Galeazzi8, E., Giroletti6, Q. B., Gou5, Y. Q., Guo5, H. H., He5, Haibing, Hu12, Hongbo, Hu5, Q., Huang21, M., Iacovacci1, R., Iuppa10, I., James8, H. Y., Jia21, Labaciren12, H. J., Li12, J. Y., Li20, X. X., Li5, G., Liguori6, C., Liu5, C. Q., Liu14, J., Liu14, M. Y., Liu12, H., Lu5, X. H., Ma5, G., Mancarella3, Mari, Stefano Maria, 8, 22, G., Marsella4, D., Martello3, S., Mastroianni2, Montini8, P., C. C., Ning12, A., Pagliaro16, M., Panareo4, B., Panico10, L., Perrone4, P., Pistilli8, X. B., Qu20, Ruggieri8, F., P., Salvini7, R., Santonico10, P. R., Shen5, X. D., Sheng5, F., Shi5, C., Stanescu8, A., Surdo4, Y. H., Tan5, P., Vallania17, S., Vernetto17, C., Vigorito18, B., Wang5, H., Wang5, C. Y., Wu5, H. R., Wu5, B., Xu21, L., Xue20, Y. X., Yan14, Q. Y., Yang14, X. C., Yang14, Z. G., Yao5, A. F., Yuan12, M., Zha5, H. M., Zhang5, Jilong, Zhang5, Jianli, Zhang5, L., Zhang14, P., Zhang14, X. Y., Zhang20, Y., Zhang5, Zhaxiciren12, Zhaxisangzhu12, X. X., Zhou21, F. R., Zhu21, Q. Q., Zhu5, G., Zizzi91 Dipartimento di Fisica dell’Universit`a di Napoli 'Federico II, ' Complesso Universitario di Monte, Sant’Angelo, Via, Cinthia, 80126, Napoli, Italy2 Istituto Nazionale di Fisica, Nucleare, Sezione di, Napoli, Complesso Universitario di Monte, Sant’Angelo, Italy3 Dipartimento di Matematica e., Fisica 'Ennio De Giorgi, ' Universit`a del, Salento, via per, Arnesano, 73100, Lecce, Italy4 Istituto Nazionale di Fisica, Nucleare, Sezione di, Lecce, Italy5 Key Laboratory of Particle, Astrophysic, Institute of High Energy, Physic, Chinese Academy of, Science, P. O., Box 918, 100049, Beijing, China6 Dipartimento di Fisica Nucleare e., Teorica dell’Universit`a di Pavia, via Bassi, 6, 27100, Pavia, Italy7 Istituto Nazionale di Fisica, Nucleare, Sezione di, Pavia, Italy8 Istituto Nazionale di Fisica, Nucleare, Sezione di Roma, Tre, via della Vasca Navale, 84, 00146, Roma, Italy9 Istituto Nazionale di Fisica Nucleare, Cnaf, Viale Berti Pichat, 6/2, 40127, Bologna, Italy10 Dipartimento di Fisica dell’Universit`a di Roma 'Tor, Vergata, ' via della Ricerca Scientifica, 1, 00133, Roma, Italy11 Istituto Nazionale di Fisica, Nucleare, Sezione di Roma Tor, Vergata, via della Ricerca Scientifica, 1, Italy12 Tibet, University, 850000, Lhasa, Xizang, China13 Hebei Normal, University, Shijiazhuang, 050016, Hebei, China14 Yunnan, University, 2 North Cuihu, R. d., 650091, Kunming, Yunnan, China15 Dipartimento di, Fisica, Universit`a degli Studi di, Palermo, Viale delle, Scienze, Edificio, 18, 90128, Palermo, Italy16 Istituto Nazionale di Fisica, Nucleare, Sezione di, Catania, Viale A., Doria 6, 95125, Catania, Italy17 Osservatorio Astrofisico di Torino dell’Istituto Nazionale di, Astrofisica, corso Fiume, 4, 10133, Torino, Italy18 Istituto Nazionale di Fisica, Nucleare, Sezione di, Torino, via P., Giuria 1, 10125, Torino, Italy19 Dipartimento di Fisica dell’Universit`a di, Torino, Italy20 Shandong, University, 250100, Jinan, Shandong, China21 Southwest Jiaotong, University, 610031, Chengdu, Sichuan, China22 Dipartimento di Fisica dell’Universit`a 'Roma, Tre, ' via della Vasca Navale, 84, Italy23 Istituto di Astrofisica Spaziale e., Fisica Cosmica dell’Istituto Nazionale di Astrofisica, via La Malfa, 153, 90146, Palermo, Italy, B., Bartoli, Bernardini, Paolo, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, R., Cardarelli, S., Catalanotti, C., Cattaneo, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Alì Staiti, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, F., Galeazzi, E., Giroletti, Q. B., Gou, Y. Q., Guo, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, and G., Zizzi
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Astrophysics, general – pulsars: individual (MGRO J1908+06) [gamma rays], 7. Clean energy, 01 natural sciences, Pulsar wind nebula, Luminosity, Settore FIS/05 - Astronomia E Astrofisica, Pulsar, 0103 physical sciences, 010303 astronomy & astrophysics, pulsar, Physics, 010308 nuclear & particles physics, gamma rays: general – pulsars: individual (MGRO J1908+06), Settore FIS/01 - Fisica Sperimentale, Gamma ray, Astronomy and Astrophysics, (MGRO J1908+06), Air shower, Crab Nebula, 13. Climate action, Space and Planetary Science, gamma ray, Milagro, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, Energy (signal processing)
Abstract: The extended gamma ray source MGRO J1908+06, discovered by the Milagro air shower detector in 2007, has been observed for about 4 years by the ARGO-YBJ experiment at TeV energies, with a statistical significance of 6.2 standard deviations. The peak of the signal is found at a position consistent with the pulsar PSR J1907+0602. Parametrizing the source shape with a two-dimensional Gauss function we estimate an extension \sigma = 0.49 \pm 0.22 degrees, consistent with a previous measurement by the Cherenkov Array H.E.S.S.. The observed energy spectrum is dN/dE = 6.1 \pm 1.4 \times 10^-13 (E/4 TeV)^{-2.54 \pm 0.36} photons cm^-2 s^-1 TeV^-1, in the energy range 1-20 TeV. The measured gamma ray flux is consistent with the results of the Milagro detector, but is 2-3 times larger than the flux previously derived by H.E.S.S. at energies of a few TeV. The continuity of the Milagro and ARGO-YBJ observations and the stable excess rate observed by ARGO-YBJ along 4 years of data taking support the identification of MGRO J1908+06 as the steady powerful TeV pulsar wind nebula of PSR J1907+0602, with an integrated luminosity above 1 TeV about 1.8 times the Crab Nebula luminosity., Comment: 6 pages, accepted for pubblication by ApJ. Replaced to correct the author list
Published: 2012

46. Observation of TeV gamma rays from the Cygnus region with the ARGO-YBJ experiment

Author: Carla Bleve, Q. Q. Zhu, B. S. Wang, Zhaxisangzhu, Hongbo Hu, C. F. Feng, B. Bartoli, Carlo Vigorito, S. M. Mari, A. F. Yuan, X. D. Sheng, Zhengguo Cao, Paolo Montini, T. Di Girolamo, G. Liguori, B. D'Ettorre Piazzoli, R. Iuppa, L. L. Ma, Haibing Hu, Jilong Zhang, Y. Q. Guo, E. Giroletti, Y. B. Chen, H. J. Li, Chang-Chun Ning, Zhaoyang Feng, H. R. Wu, F. Ruggieri, Y. Zhang, P. Bernardini, S. W. Cui, D. Martello, B. Panico, Labaciren, Jianli Zhang, L. Xue, M. Iacovacci, M. Zha, M. Y. Liu, P. R. Shen, X. Y. Zhang, B. Z. Dai, J. K. K. Liu, Antonio Budano, P. Pistilli, H. M. Zhang, X. X. Zhou, C. Cattaneo, H. Y. Jia, X. H. Ding, Hong-peng Lu, Q. Y. Yang, Zhaxiciren, P. Creti, A. K. Calabrese Melcarne, P. F. Zhang, Cristian Stanescu, P. Branchini, A. Surdo, Roberto Cardarelli, Danzengluobu, G. Zizzi, Q. Huang, X. J. Bi, G. Marsella, Zhenyong Feng, F. R. Zhu, S. Vernetto, C. Liu, Bingwei Xu, X. X. Li, S. Catalanotti, Paolo Camarri, Z. G. Yao, H.H. He, M. Dattoli, M. Panareo, Huaguang Wang, Y. H. Tan, X. H. Ma, Q. B. Gou, I. De Mitri, J. B. Zhao, P. Salvini, Fudong Shi, A. Pagliaro, S. Mastroianni, J. Y. Li, T. L. Chen, I. Bolognino, S. Z. Chen, Giovanni Mancarella, G. Di Sciascio, X. C. Yang, R. Santonico, Irina James, L. Perrone, F. Galeazzi, Longzhou Zhang, C. Y. Wu, C. Q. Liu, G. D'Alí Staiti, P. Vallania, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, R., Cardarelli, S., Catalanotti, C., Cattaneo, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D'Alí Staiti, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D'Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, F., Galeazzi, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, L. L., Ma, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, J., Zhao, Zhaxiciren, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Bartoli, Bruno, Bernardini, P., Bleve, C., Bolognino, I., Branchini, P., Budano, A., A. K. C., Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, Sergio, Cattaneo, C., Chen, S. Z., Chen, T. L., Chen, Y., Creti, P., Cui, S. W., Dai, B. Z., Staiti, G. D., Dattoli, M., Mitri, I. D., D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Ding, X. H., Sciascio, G. D., Feng, C. F., Feng, Z. Y., Galeazzi, F., Giroletti, E., Gou, Q. B., Guo, Y. Q., H. B., Hu, Huang, Q., Iacovacci, Michele, Iuppa, R., James, I., Jia, H. Y., Liguori, G., Liu, C., Liu, C. Q., Liu, J., Liu, M. Y., Lu, H., Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Pagliaro, A., Panareo, M., Panico, B., Perrone, L., Pistilli, P., Ruggieri, F., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Stanescu, C., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, B., Wang, H., Xu, B., Xue, L., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhao, J., Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., Bartoli, B, Bernardini, P, Bi, XJ, Bleve, C, Bolognino, I, Branchini, P, Budano, A, Calabrese Melcarne, AK, Camarri, P, Cao, Z, Cardarelli, R, Catalanotti, S, Cattaneo, C, Chen, SZ, Chen, TL, Chen, Y, Creti, P, Cui, SW, Dai, BZ, D’Ali Staiti, G, Dattoli, M, De Mitri, I, D’Ettorre Piazzoli, B, Di Girolamo, T, Ding, XH, Di Sciascio, G, Feng, CF, Feng, ZYa, Feng, ZYo, Galeazzi, F, Giroletti, E, Gou, QB, Guo, YQ, He, HH, Hu, HBi, Hu, HBo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, HY, Li, HJ, Li, JY, Li, XX, Liguori, G, Liu, C, Liu, CQ, Liu, J, Liu, MY, Lu, H, Ma, LL, Ma, XH, Mancarella, G, Mari, SM, Marsella, G, Martello, D, Mastroianni, S, Montini, P, Ning, CC, Pagliaro, A, Panareo, M, Panico, B, Perrone, L, Pistilli, P, Ruggieri, F, Salvini, P, Santonico, R, Shen, PR, Sheng, XD, Shi, F, Stanescu, C, Surdo, A, Tan, YH, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, CY, Wu, HR, Xu, B, Xue, L, Yang, QY, Yang, XC, Yao, ZG, Yuan, AF, M. Zha, M, Zhang, HM, Zhang, JLi, Zhang, JLo, Zhang, L, Zhang, P, Zhang, XY, Zhang, Y, Zhao, J, Zhaxiciren, Zhaxisangzhu, Zhou, XX, Zhu, FR, Zhu, QQ, Zizzi, G, Bartoli, B., Bi, X. J., Melcarne A. K., Calabrese, Catalanotti, S., Staiti G., D'Ali, De Mitri, I., Piazzoli B., D'Ettorre, Di Girolamo, T., Di Sciascio, G., Feng, Zhaoyang, Feng, Zhenyong, He, H. H., Hu, Haibing, Hu, Hongbo, Iacovacci, M., Li, H. J., Li, J. Y., Li, X. X., Ma, L. L., Ma, X. H., Mari, Stefano Maria, Wu, C. Y., Wu, H. R., Zhang, Jilong, and Zhang, Jianli
Subjects: Astrophysics::High Energy Astrophysical Phenomena, general – pulsars: individual (MGRO J2019+37 [Gamma rays], Flux, FOS: Physical sciences, Astrophysics, 01 natural sciences, Pulsar wind nebula, general – pulsar, 0103 physical sciences, MILAGRO, 010303 astronomy & astrophysics, DETECTOR, Argo, Physics, CALIBRATION, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, MGRO J2031+41), Settore FIS/01 - Fisica Sperimentale, Gamma ray, Astronomy and Astrophysics, individual (MGRO J2019+37, MGRO J2031+41), PLANE, 3. Good health, Medium energy, Crab Nebula, gamma ray, 13. Climate action, Space and Planetary Science, GALACTIC SOURCES, J2032+4130, Milagro, gamma rays, general – pulsars, EMISSION, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report the observation of TeV gamma-rays from the Cygnus region using the ARGO-YBJ data collected from 2007 November to 2011 August. Several TeV sources are located in this region including the two bright extended MGRO J2019+37 and MGRO J2031+41. According to the Milagro data set, at 20 TeV MGRO J2019+37 is the most significant source apart from the Crab Nebula. No signal from MGRO J2019+37 is detected by the ARGO-YBJ experiment, and the derived flux upper limits at 90% confidence level for all the events above 600 GeV with medium energy of 3 TeV are lower than the Milagro flux, implying that the source might be variable and hard to be identified as a pulsar wind nebula. The only statistically significant (6.4 standard deviations) gamma-ray signal is found from MGRO J2031+41, with a flux consistent with the measurement by Milagro., 14 pages, 4 figures
Published: 2012

47. Measurement of the cosmic ray antiproton/proton flux ratio at TeV energies with the ARGO-YBJ detector

Author: X. X. Li, I. De Mitri, M. Iacovacci, M. Zha, G. D'Alí Staiti, Zhenyong Feng, P. Vallania, S. Vernetto, C. Cattaneo, F. R. Zhu, C. Liu, T. L. Chen, X. H. Ma, H.H. He, S. W. Cui, Jilong Zhang, F. Ruggieri, Q. Q. Zhu, P. Bernardini, S. Catalanotti, M. Panareo, Giovanni Mancarella, T. Di Girolamo, B. D'Ettorre Piazzoli, Y. Q. Guo, Carla Bleve, C. Y. Wu, E. Giroletti, B. Panico, P. Salvini, Zhaxiciren, R. Santonico, Zihuang Cao, Y. B. Chen, H. J. Li, Paolo Camarri, C. Q. Liu, H. R. Wu, Hongbo Hu, L. Xue, C. F. Feng, A. K. Calabrese Melcarne, A. F. Yuan, Carlo Vigorito, B. Z. Dai, Paolo Montini, R. Iuppa, B. Bartoli, Hong-peng Lu, X. Y. Zhang, X. C. Yang, G. Marsella, Haibing Hu, Cristian Stanescu, P. Branchini, Y. X. Yan, Antonio Budano, B. S. Wang, J. K. K. Liu, Zhaxisangzhu, Labaciren, Irina James, Y. Zhang, Chang-Chun Ning, Zhaoyang Feng, D. Martello, Longzhou Zhang, L. Perrone, Jianli Zhang, P. Creti, P. Pistilli, H. M. Zhang, X. X. Zhou, Z. G. Yao, Bingwei Xu, A. Surdo, Q. Huang, Huaguang Wang, G. Liguori, Fudong Shi, S. Mastroianni, Q. B. Gou, X. D. Sheng, P. R. Shen, P. F. Zhang, X. J. Bi, S. Z. Chen, S. M. Mari, X. B. Qu, X. H. Ding, Roberto Cardarelli, G. Di Sciascio, Y. H. Tan, J. Y. Li, M. Y. Liu, Q. Y. Yang, H. Y. Jia, Danzengluobu, G. Zizzi, I. Bolognino, A. Pagliaro, Bartoli, B., Bernardini, P., Bi, X. J., Bleve, C., Bolognino, I., Branchini, P., Budano, A., Melcarne A. K., Calabrese, Camarri, P., Cao, Z., Cardarelli, R., Catalanotti, S., Cattaneo, C., Chen, S. Z., Chen, T. L., Chen, Y., Creti, P., Cui, S. W., Dai, B. Z., Staiti G., D'Ali, Danzengluobu, De Mitri, I., Piazzoli B., D'Ettorre, Di Girolamo, T., Ding, X. H., Di Sciascio, G., Feng, C. F., Feng, Zhaoyang, Feng, Zhenyong, Giroletti, E., Gou, Q. B., Guo, Y. Q., He, H. H., Hu, Haibing, Hu, Hongbo, Huang, Q., Iacovacci, M., Iuppa, R., James, I., Jia, H. Y., Labaciren, Li, H. J., Li, J. Y., Li, X. X., Liguori, G., Liu, C., Liu, C. Q., Liu, J., Liu, M. Y., Lu, H., Ma, X. H., Mancarella, G., Mari, Stefano Maria, Marsella, G., Martello, D., Mastroianni, S., Montini, P., Ning, C. C., Pagliaro, A., Panareo, M., Panico, B., Perrone, L., Pistilli, P., Qu, X. B., Ruggieri, F., Salvini, P., Santonico, R., Shen, P. R., Sheng, X. D., Shi, F., Stanescu, C., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, B., Wang, H., Wu, C. Y., Wu, H. R., Xu, B., Xue, L., Yan, Y. X., Yang, Q. Y., Yang, X. C., Yao, Z. G., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, Jilong, Zhang, Jianli, Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhaxiciren, Zhaxisangzhu, Zhou, X. X., Zhu, F. R., Zhu, Q. Q., Zizzi, G., Bartoli, Bruno, Bi, X., Calabrese Melcarne, A., Catalanotti, Sergio, Chen, S., Chen, T., Cui, S., Dai, B., D’Alí Staiti, G., D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, Ding, X., Feng, C., Zhaoyang, Feng, Zhenyong, Feng, Gou, Q., Guo, Y., He, H., Haibing, Hu, Hongbo, Hu, Iacovacci, Michele, Jia, H., Li, H., Li, J., Li, X., Liu, M., Ma, X., Mari, S., Ning, C., Qu, X., Shen, P., Sheng, X., Tan, Y., Wu, C., Wu, H., Yan, Y., Yang, Q., Yang, X., Yao, Z., Yuan, A., Zhang, H., Jilong, Zhang, Jianli, Zhang, Zhang, X., Zhou, X., Zhu, F., Zhu, Q., Bartoli, B, Bernardini, P, Bi, XJ, Bleve, C, Bolognino, I, Branchini, P, Budano, A, Calabrese Melcarne, AK, Camarri, P, Cao, Z, Cardarelli, R, Catalanotti, S, Cattaneo, C, Chen, SZ, Chen, TL, Chen, Y, Creti, P, Cui, SW, Dai, BZ, D’Ali' Staiti, G, De Mitri, I, D’Ettorre Piazzoli, B, Di Girolamo, T, Ding, XH, Di Sciascio, G, Feng, CF, Feng, ZYa, Feng, ZYo, Giroletti, E, Gou, QB, Guo, YQ, He, HH, Hu, HBa, Hu, HBo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, HY, Li, HJ, Li, JY, Li, XX, Liguori, G, Liu, C, Liu, CQ, Liu, J, Liu, MY, Lu, H, Ma, XH, Mancarella, G, Mari, SM, Marsella, G, Martello, D, Mastroianni, S, Montini, P, Ning, CC, Pagliaro, A, Panareo, M, Panico, B, Perrone, L, Pistilli, P, Qu, XB, Ruggieri, F, Salvini, P, Santonico, R, Shen, PR, Sheng, XD, Shi, F, Stanescu, C, Surdo, A, Tan, YH, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, CY, Wu, HR, Xu B, Xue, L, Yan, YX, Yang, QY, Yang, XC, Yao, ZG, Yuan, AF, Zha, M, Zhang, HM, Zhang, JLo, Zhang, JLi, Zhang, L, Zhang, P, Zhang, XY, Zhang, Y, Zhaxiciren, Zhaxisangzhu, Zhou, XX, Zhu, FR, Zhu, QQ, Zizzi, G, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, I., Bolognino, P., Branchini, A., Budano, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, R., Cardarelli, S., Catalanotti, C., Cattaneo, S. Z., Chen, T. L., Chen, Y., Chen, P., Creti, S. W., Cui, B. Z., Dai, G., D’Alí Staiti, DE MITRI, Ivan, B., D’Ettorre Piazzoli, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, E., Giroletti, Q. B., Gou, Y. Q., Guo, H. H., He, Q., Huang, M., Iacovacci, R., Iuppa, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, X. X., Li, G., Liguori, C., Liu, C. Q., Liu, J., Liu, M. Y., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, P., Montini, C. C., Ning, A., Pagliaro, Panareo, Marco, B., Panico, Perrone, Lorenzo, P., Pistilli, X. B., Qu, F., Ruggieri, P., Salvini, R., Santonico, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, B., Wang, H., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, Y. X., Yan, Q. Y., Yang, X. C., Yang, Z. G., Yao, A. F., Yuan, M., Zha, H. M., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, and G., Zizzi
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Settore FIS/01 - Fisica Sperimentale, Earth-Moon, Cosmic ray, magnetic spectrometer, High Energy Physics - Experiment, Nuclear physics, Earth's magnetic field, Antiproton, Antimatter, antiproton, Content (measure theory), Antiproton-Proton ratio, Cosmic rays, Extended Air Showers, Astrophysics - High Energy Astrophysical Phenomena, Energy (signal processing)
Abstract: Cosmic ray antiprotons provide an important probe to study the cosmic ray propagation in the interstellar space and to investigate the existence of dark matter. Acting the Earth-Moon system as a magnetic spectrometer, paths of primary antiprotons are deflected in the opposite sense with respect to those of the protons in their way to the Earth. This effect allows, in principle, the search for antiparticles in the direction opposite to the observed deficit of cosmic rays due to the Moon (the so-called `Moon shadow'). The ARGO-YBJ experiment, located at the Yangbajing Cosmic Ray Laboratory (Tibet, P.R. China, 4300 m a.s.l., 606 g/cm$^2$), is particularly effective in measuring the cosmic ray antimatter content via the observation of the cosmic rays shadowing effect due to: (1) good angular resolution, pointing accuracy and long-term stability; (2) low energy threshold; (3) real sensitivity to the geomagnetic field. Based on all the data recorded during the period from July 2006 through November 2009 and on a full Monte Carlo simulation, we searched for the existence of the shadow cast by antiprotons in the TeV energy region. No evidence of the existence of antiprotons is found in this energy region. Upper limits to the $\bar{p}/p$ flux ratio are set to 5 % at a median energy of 1.4 TeV and 6 % at 5 TeV with a confidence level of 90%. In the TeV energy range these limits are the lowest available., Comment: Contact authors: G. Di Sciascio (disciascio@roma2.infn.it) and R. Iuppa (iuppa@roma2.infn.it), INFN Sezione di Roma Tor Vergata, Roma, Italy
Published: 2012

48. ARGO-YBJ constraints on very high energy emission from GRBs

Author: Zhengguo Cao, Q. Y. Yang, G. Zizzi, Q. Huang, Irina James, F. Shi, Y. Q. Guo, Jilong Zhang, A. Cappa, C. Y. Wu, M. Iacovacci, M. Zha, Zhaxisangzhu, P. Zhang, S. M. Mari, P. Salvini, G. Di Sciascio, L. Saggese, M. De Vincenzi, H. Y. Jia, Y. H. Zhang, G. Mancarella, C. Bacci, Piero Vallania, R. Santonico, Zhenyong Feng, J. K. K. Liu, R. Gargana, A. Pagliaro, Labaciren, Hongbo Hu, A. Surdo, C. F. Feng, A. Budano, L. Perrone, H. J. Li, H. R. Wu, B. D'Ettorre Piazzoli, Haoqi Lu, P. Creti, X. Y. Zhang, X. B. Qu, X. H. Ding, Y. X. Yan, S. Mastroianni, X. J. Bi, L. Xue, B. Z. Dai, P. Camarri, F. Ruggieri, Bo Wang, Y. H. Tan, J. Y. Li, X. D. Sheng, H. W. Wang, G. D'Alí Staiti, M. Y. Liu, P. Branchini, Paolo Bernardini, N. Cheng, Y. B. Chen, C. Liu, S. Z. Chen, Danzengluobu, X. X. Li, A. K. Calabrese Melcarne, C.C. Ning, Huihai He, R. Cardarelli, G. Marsella, X.H. Ma, C. Cattaneo, L. Zhang, E. Rossi, Paolo Montini, R. Iuppa, S. Vernetto, Jianli Zhang, I. De Mitri, S. Catalanotti, H. M. Zhang, B. Bartoli, G. Liguori, B. Liberti, C. X. Liu, Q. Q. Zhu, A. F. Yuan, X. R. Meng, C. Stanescu, Zhaoyang Feng, F. R. Zhu, M. Panareo, M. Dattoli, F. Galeazzi, P. R. Shen, Haibing Hu, C. Bleve, D. Martello, G. Aielli, P. Pistilli, X. X. Zhou, P. Galeotti, Bingwei Xu, Severino Angelo Maria Bussino, Q. B. Gou, T. Di Girolamo, P. Celio, S. W. Cui, Carlo Vigorito, X. C. Yang, AIELLI, G, BACCI, C, BARTOLI, B, BERNARDINI, P, BI, XJ, BLEVE, C, BRANCHINI, P, BUDANO, A, BUSSINO, S, CALABRESE MELCARNE, AK, CAMARRI, P, CAO, Z, CAPPA, A, CARDARELLI, R, CATALANOTTI, S, CATTANEO, S, CELIO, P, CHEN, S, CHEN, Y, CHENG, N, CRETI, P, CUI, SW, DAI, BZ, D'ALI'STAITI, G, DANZENGLUOBU, DATTOLI, M, DE MITRI, I, D'ETTORRE PIAZZOLI, B, DE VINCENZI, M, DI GIROLAMO, T, DING, XH, DI SCIASCIO, G, FENG, CF, FENG, ZHAOYANG, FENG ZHENYONG, GALEAZZI, F, GALEOTTI, P, GARGANA, R, GOU, QB, GUO, YQ, HE, HH, HU, HAIBING, HU, HONGBO, HUANG, Q, IACOVACCI, M, IUPPA, R, JAMES, J, JIA, HY, LABACIREN, LI, HJ, LI, JY, LI, XX, LIBERTI, B, LIGUORI, G, LIU, C, LIU, CQ, LIU, MY, LIU, J, LUI, H, MA, XH, MANCARELLA, G, MARI, SM, MARSELLA, G, MARTELLO, D, MASTROIANNI, S, MENG, XR, MONTINI, P, NING, CC, PAGLIARO, A, PANAREO, M, PERRONE, L, PISTILLI, P, QU, XB, ROSSI, E, RUGGIERI, F, SAGGESE, L, SALVINI, P, SANTONICO, R, SHEN, PR, SHENG, XD, SHI, F, STANESCU, C, SURDO, A, TAN, YH, VALLANIA, P, VERNETTO, S, VIGORITO, C, WANG, B, WANG, H, WUI, CH, WUI, HR, XUT, B, XUES, L, YANM, YX, YANG, QY, YANG, XC, YUAN, AF, ZHA, F, ZHANG, XM, ZHANG, JILONG, ZHANG, JIANLI, ZHANG, L, ZHANG, P, ZHANG, XY, ZHANG, Y, ZHAXISANGZHU, ZHOU, XX, ZHU, FR, ZHU, QQ, ZIZZI, G, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Melcarne, Akc, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, Staiti, Gd, Danzengluobu, Dattoli, M, De Mitri, I, Piazzoli, Bd, DE VINCENZI, Mario, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng, Zy, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Hb, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang, Jl, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, and Zizzi, G.
Subjects: Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Settore FIS/01 - Fisica Sperimentale, Detector, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Cosmic ray, Field of view, Astrophysics, Radiation, 7. Clean energy, 01 natural sciences, Settore FIS/05 - Astronomia e Astrofisica, 13. Climate action, Duty cycle, Observatory, 0103 physical sciences, GAMMA RAY BURSTS, GAMMA RAYS, COSMIC RAYS, EXTENDED AIR SHOWERS, Gamma-ray burst, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics
Abstract: The ARGO-YBJ (Astrophysical Radiation Ground-based Observatory at YangBaJing) experiment is designed for very high energy $\gamma$-astronomy and cosmic ray researches. Due to the full coverage of a large area ($5600 m^2$) with resistive plate chambers at a very high altitude (4300 m a.s.l.), the ARGO-YBJ detector is used to search for transient phenomena, such as Gamma-ray bursts (GRBs). Because the ARGO-YBJ detector has a large field of view ($\sim$2 sr) and is operated with a high duty cycle ($>$90%), it is well suited for GRB surveying and can be operated in searches for high energy GRBs following alarms set by satellite-borne observations at lower energies. In this paper, the sensitivity of the ARGO-YBJ detector for GRB detection is estimated. Upper limits to fluence with 99% confidence level for 26 GRBs inside the field of view from June 2006 to January 2009 are set in the two energy ranges 10$-$100 GeV and 10 GeV$-$1 TeV., Comment: accepted for publication in Astroparticle Physics
Published: 2009

49. Software Timing Calibration of the ARGO-YBJ Detector

Author: A. Cappa, F. R. Zhu, L. Perrone, M. Panareo, P. Zhang, C. Y. Wu, P. Salvini, A. F. Yuan, L. Zhang, Q. Q. Zhu, X. R. Meng, Y.G. Wang, N. Cheng, P. Pistilli, C. Stanescu, Zhaoyang Feng, X. X. Zhou, S. Mastroianni, S. Catalanotti, H.T. Yang, Piero Vallania, C. Vigorito, L. Saggese, X. C. Yang, P. Galeotti, B. D'Ettorre Piazzoli, J. K. K. Liu, H. J. Li, H. R. Wu, A. Budano, Zhengguo Cao, H. Y. Jia, M. Iacovacci, M. Zha, R. Gargana, Labaciren, C. Bacci, C. Cattaneo, T. Di Girolamo, M. Dattoli, X. Y. Gao, L. Xue, P. Celio, G.C. Yu, Haoqi Lu, Zhaxisangzhu, I. James, Q. Huang, G. Di Sciascio, G. Cusumano, C. Pino, F. Shi, Danzengluobu, P. Creti, C.C. Ning, M. De Vincenzi, C. Liu, Sergio Cavaliere, Luciano Nicastro, A. K. Calabrese Melcarne, C. Ferrigno, A. Segreto, R. Cardarelli, Y. H. Zhang, G. Marsella, B. Liberti, G. Mancarella, B. Bartoli, P. Camarri, E. Rossi, X. Y. Zhang, H. W. Wang, S. W. Cui, Zhenyong Feng, Huihai He, S. Vernetto, F. Galeazzi, X. D. Sheng, Paolo Bernardini, Hongbo Hu, A. Surdo, C. F. Feng, R. Santonico, P. R. Shen, G. Aielli, Zhang Jingzhe, Bingwei Xu, Severino Angelo Maria Bussino, Q. B. Gou, J. Y. Li, I. De Mitri, L. Palummo, H. M. Zhang, Q. Y. Yang, G. D'Alí Staiti, G. Zizzi, S. M. Mari, J. Mu, X. J. Bi, S. Z. Chen, B. Z. Dai, F. Ruggieri, P. Branchini, X. B. Qu, X. H. Ding, Y. H. Tan, G. Liguori, Haibing Hu, C. Bleve, D. Martello, G., Aielli, C., Bacci, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, S., Cavaliere, P., Celio, S. Z., Chen, N., Cheng, P., Creti, S. W., Cui, G., Cusumano, B. Z., Dai, G., D’Alí Staiti, Danzengluobu, M., Dattoli, DE MITRI, Ivan, B., D’Ettorre Piazzoli, M., De Vincenzi, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, C., Ferrigno, F., Galeazzi, P., Galeotti, X. Y., Gao, R., Gargana, Q. B., Gou, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, I., Jame, H. Y., Jia, Labaciren, H. J., Li, J. Y., Li, B., Liberti, G., Liguori, C. Q., Li, J., Li, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, L., Palummo, Panareo, Marco, Perrone, Lorenzo, C., Pino, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, A., Segreto, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, H., Wang, Y. G., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, H. T., Yang, Q. Y., Yang, X. C., Yang, G. C., Yu, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, AIELLI, G, BACCI, C, BARTOLI, B, BERNARDINI, P, BI, XJ, BLEVE, C, BRANCHINI, P, BUDANO, A, BUSSINO, S, CALABRESE MELCARNE, AK, CAMARRI, P, CAO, Z, CAPPA, A, CARDARELLI, R, CATALANOTTI, S, CATTANEO, C, CAVALIERE, S, CELIO, P, CHEN, SZ, CHENG, N, CRETI, P, CUI, SW, CUSUMANO, G, DAI, BZ, D'ALI'STAITI, G, DANZENGLUOBU, DATTOLI, M, DE MITRI, I, DETTORRE PIAZZOLI, B, DE VINCENZI, M, DI GIROLAMO, T, DING, XH, DI SCIASCIO, G, FENG, CF, FENG, ZHAOYANG, FENG, ZHENYONG, FERRIGNO, C, GALEAZZI, F, GALEOTTI, P, GAO, XY, GARGANA, R, GOU, QB, HE, HH, HU, HAIBING, HU, HONGBO, HUANG, Q, IACOVACCI, M, JAMES, I, JIA, HY, LABACIREN, LI, HJ, LI, JY, LIBERTI, B, LIGUORI, G, LIU, CQ, LIU, J, LU, H, MANCARELLA, G, MARI, SM, MARSELLA, G, MARTELLO, D, MASTROIANNI, S, MENG, XR, MU, J, NICASTRO, L, NING, CC, PALUMMO, L, PANAREO, M, PERRONE, L, PINO, C, PISTILLI, P, QU, XB, ROSSI, E, RUGGIERI, F, SAGGESE, L, SALVINI, P, SANTONICO, R, SEGRETO, A, SHEN, PR, SHENG, XD, SHI, F, STANESCU, C, SURDO, A, TAN, YH, VALLANIA, P, VERNETTO, S, VIGORITO, C, WANG, H, WANG, YG, WU, CY, WU, HR, XU, B, XUE, L, YANG, HT, YANG, QY, YANG, XC, YU, GC, YUAN, AF, ZHA, M, ZHANG, HM, ZHANG, JL, ZHANG, L, ZHANG, P, ZHANG, XY, ZHANG, Y, ZHAXISANGZHU, ZHOU, XX, ZHU, FR, ZHU, QQ, G ZIZZI, g, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Melcarne, Akc, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Cavaliere, S, Celio, P, Chen, Sz, Cheng, N, Creti, P, Cui, Sw, Cusumano, G, Dai, Bz, Staiti, Gd, Dattoli, M, De Mitri, I, Piazzoli, Bd, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng, Zy, Ferrigno, C, Galeazzi, F, Galeotti, P, Gao, Xy, Gargana, R, Gou, Qb, He, Hh, Hu, Hb, Huang, Q, Iacovacci, M, James, I, Jia, Hy, Li, Hj, Li, Jy, Liberti, B, Liguori, G, Liu, Cq, Liu, J, Lu, H, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Mu, J, Nicastro, L, Ning, Cc, Palummo, L, Panareo, M, Perrone, L, Pino, C, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Segreto, A, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, H, Wang, Yg, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yang, Ht, Yang, Qy, Yang, Xc, Yu, Gc, Yuan, Af, Zha, M, Zhang, Hm, Zhang, Jl, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., Bartoli, Bruno, Catalanotti, Sergio, Cavaliere, Sergio, D'ETTORRE PIAZZOLI, Benedetto, DI GIROLAMO, Tristano, and Iacovacci, Michele
Subjects: Physics, Pixel, Calibration (statistics), business.industry, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Settore FIS/01 - Fisica Sperimentale, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Astronomia gamma, Gamma Astronomy, Timing Calibration, Extensive Air Showers, Sciami estesi, Calibrazione temporale, Optics, Software, Raggi cosmici, Settore FIS/05 - Astronomia e Astrofisica, Angular resolution, business, Argo, Remote sensing
Abstract: The ARGO-YBJ experiment is mainly devoted to search for astronomical gamma sources. The arrival direction of air showers is reconstructed thanks to the times measured by the pixels of the detector. Therefore, the timing calibration of the detector pixels is crucial in order to get the best angular resolution and pointing accuracy. Because of the large number of pixels a hardware timing calibration is practically impossible. Therefore an off-line software calibration has been adopted. Here, the details of the procedure and the results are presented. (C) 2008 Elsevier B.V. All rights reserved.
Published: 2009

50. Search for gamma ray bursts with the ARGO-YBJ detector in scaler mode

Author: THE ARGO YBJ C.O.L.L.A.B.O.R.A.T.I.O.N.G. Aielli a, b, C. Bacci c, d, B. Bartoli e, f, P. Bernardini g, h, X. J. Bi i, C. Bleve g, P. Branchini d, A. Budano d, S. Bussino c, A. K. Calabrese Melcarne x, P. Camarri a, Z. Cao i, A. Cappa j, k, R. Cardarelli b, S. Catalanotti f, e, C. Cattaneo l, P. Celio c, S. Z. Chen i, Y. Chen i, N. Cheng i, P. Creti h, S. W. Cuim, B. Z. Dai o, G. D’Alí Staiti n, p, Danzengluobu q, M. Dattoli j, k, r, I. De Mitri g, B. D’Ettorre Piazzoli f, M. DeVincenzi c, T. Di Girolamo f, X. H. Ding q, G. Di Sciascio b, C. F. Feng s, ZhaoyangFeng i, Zhenyong Feng t, F. Galeazzi d, P. Galeotti j, r, R. Gargana d, Q. B. Gou i, Y. Q. Guo i, H. H. He i, Haibing Huq, Hongbo Hui, Q. Huang t, M. Iacovacci f, R. Iuppa a, I. James c, H. Y. Jia t, Labaciren q, H. J. Li q, J. Y. Li s, X. X. Li i, B. Liberti b, G. Liguori l, u, C. Liu i, C. Q. Liu o, M. Y. Lium, J. Liu o, H. Lui, X. H. Mai, G. Mancarellag, c, d, G. Marsella h, v, D. Martello g, S. Mastroianni e, X. R. Meng q, P. Montini c, C. C. Ning q, A. Pagliaro n, w, M. Panareo h, L. Perrone h, P. Pistilli c, X. B. Qu s, E. Rossi e, F. Ruggieri d, L. Saggese f, P. Salvini l, R. Santonico a, P. R. Shen i, X. D. Sheng i, F. Shi i, C. Stanescu d, A. Surdo h, Y. H. Tan i, P. Vallania j, S. Vernetto j, C. Vigorito j, B. Wangi, H. Wang i, C. Y. Wui, H. R. Wui, B. Xut, L. Xues, Y. X. Yanm, Q. Y. Yang o, X. C. Yang o, A. F. Yuan q, M. Zha i, H. M. Zhang i, JiLong Zhang i, JianLi Zhang i, L. Zhang o, P. Zhang o, X. Y. Zhang s, Y. Zhang i, Zhaxisangzhu q, X. X. Zhou t, F. R. Zhu i, Q. Q. Zhu i, G. Zizzi g, MARI, Stefano Maria, Aielli, G, Bacci, C, Bartoli, B, Bernardini, P, Bi, Xj, Bleve, C, Branchini, P, Budano, A, Bussino, Severino Angelo Maria, Calabrese Melcarne, Ak, Camarri, P, Cao, Z, Cappa, A, Cardarelli, R, Catalanotti, S, Cattaneo, C, Celio, P, Chen, Sz, Chen, Tl, Chen, Y, Cheng, N, Creti, P, Cui, Sw, Dai, Bz, D'Ali Staiti, G, Danzengluobu, Dattoli, M, De Mitri, I, D'Ettorre Piazzoli, B, De Vincenzi, M, Di Girolamo, T, Ding, Xh, Di Sciascio, G, Feng, Cf, Feng Zhao, Yang, Feng Zhen, Yong, Galeazzi, F, Galeotti, P, Gargana, R, Gou, Qb, Guo, Yq, He, Hh, Hu, Haibing, Hu Hong, Bo, Huang, Q, Iacovacci, M, Iuppa, R, James, I, Jia, Hy, Labaciren, Li, Hj, Li, Jy, Li, Xx, Liberti, B, Liguori, G, Liu, C, Liu, Cq, Liu, My, Liu, J, Lu, H, Ma, Xh, Mancarella, G, Mari, Stefano Maria, Marsella, G, Martello, D, Mastroianni, S, Meng, Xr, Montini, P, Ning, Cc, Pagliaro, A, Panareo, M, Perrone, L, Pistilli, P, Qu, Xb, Rossi, E, Ruggieri, F, Saggese, L, Salvini, P, Santonico, R, Shen, Pr, Sheng, Xd, Shi, F, Stanescu, C, Surdo, A, Tan, Yh, Vallania, P, Vernetto, S, Vigorito, C, Wang, B, Wang, H, Wu, Cy, Wu, Hr, Xu, B, Xue, L, Yan, Yx, Yang, Qy, Yang, Xc, Yuan, Af, Zha, M, Zhang, Hm, Zhang Ji, Long, Zhang Jian, Li, Zhang, L, Zhang, P, Zhang, Xy, Zhang, Y, Zhaxisangzhu, Zhou, Xx, Zhu, Fr, Zhu, Qq, Zizzi, G., G., Aielli, C., Bacci, F., Barone, B., Bartoli, Bernardini, Paolo, X. J., Bi, C., Bleve, P., Branchini, A., Budano, S., Bussino, A. K., Calabrese Melcarne, P., Camarri, Z., Cao, A., Cappa, R., Cardarelli, S., Catalanotti, C., Cattaneo, S., Cavaliere, P., Celio, S. Z., Chen, N., Cheng, P., Creti, S. W., Cui, G., Cusumano, B. Z., Dai, G., D’Alí Staiti, M., Dattoli, DE MITRI, Ivan, R., De Rosa, B., D’Ettorre Piazzoli, M., De Vincenzi, T., Di Girolamo, X. H., Ding, G., Di Sciascio, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, C., Ferrigno, F., Galeazzi, P., Galeotti, X. Y., Gao, R., Gargana, F., Garufi, Q. B., Gou, H. H., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, I., Jame, H. Y., Jia, H. J., Li, J. Y., Li, B., Liberti, G., Liguori, C. Q., Liu, J., Liu, H., Lu, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, L., Palummo, Panareo, Marco, Perrone, Lorenzo, P., Pistilli, X. B., Qu, E., Rossi, F., Ruggieri, L., Saggese, P., Salvini, R., Santonico, A., Segreto, P. R., Shen, X. D., Sheng, F., Shi, C., Stanescu, A., Surdo, Y. H., Tan, P., Vallania, S., Vernetto, C., Vigorito, H., Wang, Y. G., Wang, C. Y., Wu, H. R., Wu, B., Xu, L., Xue, H. T., Yang, Q. Y., Yang, X. C., Yang, G. C., Yu, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhou, F. R., Zhu, Q. Q., Zhu, G., Zizzi, Aielli a, THE ARGO YBJ C. O. L. L. A. B. O. R. A. T. I. O. N. G., B, C., Bacci c, D, B., Bartoli e, F, P., Bernardini g, H, X. J., Bi i, C., Bleve g, P., Branchini d, A., Budano d, S., Bussino c, A. K., Calabrese Melcarne x, P., Camarri a, Z., Cao i, A., Cappa j, K, R., Cardarelli b, S., Catalanotti f, E, C., Cattaneo l, P., Celio c, S. Z., Chen i, Y., Chen i, N., Cheng i, P., Creti h, S. W., Cuim, B. Z., Dai o, G., D’Alí Staiti n, P, Danzengluobu, Q, M., Dattoli j, K, R, I., De Mitri g, B., D’Ettorre Piazzoli f, M., DeVincenzi c, T., Di Girolamo f, X. H., Ding q, G., Di Sciascio b, Zhaoyangfeng, I, Zhenyong Feng, T, F., Galeazzi d, P., Galeotti j, R, R., Gargana d, Q. B., Gou i, Y. Q., Guo i, H. H., He i, Haibing, Huq, Hongbo, Hui, Q., Huang t, M., Iacovacci f, R., Iuppa a, I., James c, H. Y., Jia t, Labaciren, Q, H. J., Li q, X. X., Li i, B., Liberti b, G., Liguori l, U, C., Liu i, C. Q., Liu o, M. Y., Lium, J., Liu o, H., Lui, X. H., Mai, G., Mancarellag, C, D, G., Marsella h, V, D., Martello g, S., Mastroianni e, X. R., Meng q, P., Montini c, C. C., Ning q, A., Pagliaro n, W, M., Panareo h, L., Perrone h, P., Pistilli c, E., Rossi e, F., Ruggieri d, L., Saggese f, P., Salvini l, R., Santonico a, P. R., Shen i, X. D., Sheng i, F., Shi i, C., Stanescu d, A., Surdo h, Y. H., Tan i, P., Vallania j, S., Vernetto j, C., Vigorito j, B., Wangi, H., Wang i, C. Y., Wui, H. R., Wui, B., Xut, Y. X., Yanm, Q. Y., Yang o, X. C., Yang o, A. F., Yuan q, M., Zha i, H. M., Zhang i, JiLong Zhang, I, JianLi Zhang, I, L., Zhang o, P., Zhang o, Y., Zhang i, Zhaxisangzhu, Q, X. X., Zhou t, F. R., Zhu i, Q. Q., Zhu i, G., Zizzi g, Barone, F, Melcarne, Akc, Cavaliere, S, Staiti, Gd, De Rosa, R, Piazzoli, Bd, DE VINCENZI, Mario, Feng, Zy, Gao, Xy, Garufi, F, Hu, Hb, Mu, J, Palummo, L, Segreto, A, Wang, Yg, Yang, Ht, Yu, Gc, Zhang, Jl, Bleve, Carla, CALABRESE MELCARNE, ANNA KAREN, G., D’Alì Staiti, Y. Q., Guo, R., Iuppa, Zizzi, Giovanni, DI GIROLAMO, Tristano, Aielli, G., Bacci, C., Barone, F., Bartoli, Bruno, Bernardini, P., Bleve, C., Branchini, P., Budano, A., Bussino, S., Calabrese Melcarne, A. K., Camarri, P., Cao, Z., Cappa, A., Cardarelli, R., Catalanotti, Sergio, Cattaneo, C., Cavaliere, Sergio, Celio, P., Chen, S. Z., Cheng, N., Creti, P., Cui, S. W., Dai, B. Z., D'Alì Staiti, G., Dattoli, M., De Mitri, I., DE ROSA, Rosario, D'ETTORRE PIAZZOLI, Benedetto, De Vincenzi, M., Ding, X. H., Di Sciascio, G., Feng, C. F., Galeazzi, F., Galeotti, P., Gao, X. Y., Gargana, R., Garufi, Fabio, Gou, Q. B., Guo, Y. Q., Huang, Q., Iacovacci, Michele, Iuppa, R., James, I., Jia, H. Y., Liberti, B., Liguori, G., Liu, C. Q., Liu, J., Lu, H., Mancarella, G., Mari, S. M., Marsella, G., Martello, D., Mastroianni, S., Meng, X. R., Mu, J., Ning, C. C., Palummo, L., Panareo, M., Perrone, L., Pistilli, P., Rossi, E., Ruggieri, F., Saggese, L., Salvini, P., Santonico, R., Segreto, A., Shen, P. R., Sheng, X. D., Shi, F., Stanescu, C., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Vigorito, C., Wang, H., Wang, Y. G., Xu, B., Xue, L., Yang, H. T., Yang, Q. Y., Yang, X. C., Yuan, A. F., Zha, M., Zhang, H. M., Zhang, J. L., Zhang, L., Zhang, P., Zhang, X. Y., Zhang, Y., Zhou, X. X., Zhu, F. R., Zhu, Q. Q., AIELLI, G, BACCI, C, BARONE, F, BARTOLI, B, BERNARDINI, P, BI, XJ, BLEVE, C, BRANCHINI, P, BUDANO, A, BUSSINO, S, CALABRESE MELCARNE, AK, CAMARRI, P, CAO, Z, CAPPA, A, CARDARELLI, R, CATALANOTTI, S, CATTANEO, C, CAVALIERE, S, CELIO, P, CHEN, SZ, CHENG, N, CRETI, P, CUI, SW, DAI, BZ, D'ALI'STAITI, G, DANZENGLUOBU, DATTOLI, M, DE MITRI, I, DE ROSA, R, DETTORRE PIAZZOLI, B, DE VINCENZI, M, DI GIROLAMO, T, DING, XH, DI SCIASCIO, G, FENG, CF, FENG, ZHAOYANG, FENG, ZHENYONG, GALEAZZI, F, GALEOTTI, P, GAO, XY, GARGANA, R, GARUFI, F, GOU, QB, GUO, YQ, HE, HH, HU, HAIBING, HU, HONGBO, HUANG, Q, IACOVACCI, M, IUPPA, R, JAMES, I, JIA, HY, LABACIREN, LI, HJ, LI, JY, LIBERTI, B, LIGUORI, G, LIU, CQ, LIU, J, LU, H, MANCARELLA, G, MARI, SM, MARSELLA, G, MARTELLO, D, MASTROIANNI, S, MENG, XR, MU, J, NING, CC, PALUMMO, L, PANAREO, M, PERRONE, L, PISTILLI, P, QU, XB, ROSSI, E, RUGGIERI, F, SAGGESE, L, SALVINI, P, SANTONICO, R, SEGRETO, A, SHEN, PR, SHENG, XD, SHI, F, STANESCU, C, SURDO, A, TAN, YH, VALLANIA, P, VERNETTO, S, VIGORITO, C, WANG, H, WANG, YG, WU, CY, WU, HR, XU, B, XUE, L, YANG, HT, YANG, QY, YANG, XC, YU, GC, YUAN, AF, ZHA, M, ZHANG, HM, ZHANG, JL, ZHANG, L, ZHANG, P, ZHANG, XY, ZHANG, Y, ZHAXISANGZHU, ZHOU, XX, ZHU, FR, ZHU, QQ, and ZIZZI, G
Subjects: Nuclear and High Energy Physics, Gamma ray burst, Astrophysics::High Energy Astrophysical Phenomena, Air shower array, Astrophysics, Argo-Ybj, Settore FIS/05 - Astronomia e Astrofisica, Observatory, Gamma Rays Observations, Instrumentation, Zenith, Argo, Physics, Range (particle radiation), Apparati di sciame, Detector, Settore FIS/01 - Fisica Sperimentale, Gamma ray, Gamma ray bursts, Air shower arrays, Mode (statistics), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Redshift, Air shower, Space and Planetary Science, Gamma Ray Bursts, Gamma Ray Emission, Astrophysics - High Energy Astrophysical Phenomena, Gamma-ray burst
Abstract: We report on the search for Gamma Ray Bursts (GRBs) in the energy range 1-100 GeV in coincidence with the prompt emission detected by satellites using the Astrophysical Radiation with Ground-based Observatory at YangBaJing (ARGO-YBJ) air shower detector. Thanks to its mountain location (Yangbajing, Tibet, P.R. China, 4300 m a.s.l.), active surface (about 6700 m**2 of Resistive Plate Chambers), and large field of view (about 2 sr, limited only by the atmospheric absorption), the ARGO-YBJ air shower detector is particularly suitable for the detection of unpredictable and short duration events such as GRBs. The search is carried out using the "single particle technique", i.e. counting all the particles hitting the detector without measurement of the energy and arrival direction of the primary gamma rays. Between 2004 December 17 and 2009 April 7, 81 GRBs detected by satellites occurred within the field of view of ARGO-YBJ (zenith angle < 45 deg). It was possible to examine 62 of these for >1 GeV counterpart in the ARGO-YBJ data finding no statistically significant emission. With a lack of detected spectra in this energy range fluence upper limits are profitable, especially when the redshift is known and the correction for the extragalactic absorption can be considered. The obtained fluence upper limits reach values as low as 10**{-5} erg cm**{-2} in the 1-100 GeV energy region. Besides this individual search for a higher energy counterpart, a statistical study of the stack of all the GRBs both in time and in phase was made, looking for a common feature in the GRB high energy emission. No significant signal has been detected., Comment: accepted for publication in ApJ
Published: 2008

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