Author: "N. J., Zhang" - Searchworks@Jio Institute Digital Library Search Results

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80 results on '"N. J., Zhang"'

1. Immobilization of mutated xylanase from Neocallimastix patriciarum in E. coli and application for kraft pulp biobleaching

Author: Y. Huang, N.-J. Zhang, and Z. Zhao
Subjects: xylanase, immobilization, thermostable, alkali tolerant, sodium alginate, biobleaching, Science, Biology (General), QH301-705.5, Zoology, QL1-991, Botany, QK1-989
Abstract: Abstract As an important enzyme, xylanase is widely used in the food, pulp, and textile industry. Different applications of xylanase warrant specific conditions including temperature and pH. This study aimed to carry out sodium alginate beads as carrier to immobilize previous reported mutated xylanase from Neocallimastix patriciarum which expressed in E. coli, the activity of immobilization of mutated xylanase was elevated about 4% at pH 6 and 13% at 62 °C. Moreover, the immobilized mutated xylanase retained a greater proportion of its activity than the wide type in thermostability. These properties suggested that the immobilization of mutated xylanase has potential to apply in biobleaching industry.
Published: 2021
Full Text: View/download PDF

2. Incidence and risk factors associated with progression to mild cognitive impairment among middle aged and older adults

Author: N-J, Zhang, Z-D, Qian, Y-B, Zeng, J-N, Gu, Y, Jin, and W, Li
Abstract: We performed this longitudinal 2-year follow-up study to determine the incidence and risk factors associated with MCI in middle-aged and older adults.This community-based longitudinal study was conducted in adults aged ≥ 50 years with normal cognitive function in Shanghai community, China, over a period of two years. Information about the socio-demographic, behavioral, anthropometric, and biochemical parameters was obtained at the baseline and cognitive function was assessed at the end of the follow-up period using the Montreal cognitive assessment tool.A total of 985 participants aged ≥ 50 years were included in the analysis. Incidence of MCI during the 2-year follow-up period among the study participants was 26.7% (95% CI: 24.0%-29.6%). Participants with lower level of education [primary - adjusted RR=2.79 (95% CI: 1.38-5.64 and secondary - adjusted RR=1.62 (95% CI: 1.17-2.24)], with history of cerebral infarction (adjusted RR=1.49; 95% CI: 1.05-2.12), history of cerebral hemorrhage (adjusted RR=3.20; 95% CI: 1.22-8.40) were found to have significantly higher risk of MCI. Regular tea consumption was associated with significantly reduced risk of MCI development (adjusted RR=0.69; 95% CI: 0.49-0.96).Our study found that one in four participants developed MCI during the 2-year follow-up period. Lower educational level, history of cerebral infarction, cerebral hemorrhage and tea consumption were significant determinants of MCI incidence. The target groups identified in this study should be closely monitored with regular follow-up investigations for early diagnosis and appropriate management of the condition.
Published: 2022

3. [Analysis of serum epidemiological characteristics of hepatitis B among the population of 1-59 year-old in Gansu Province]

Author: P G, Wang, X S, Zhang, J, An, Y, Tang, N J, Zhang, X L, Wang, X X, Wang, X F, Liang, B L, Zhang, Y Z, Jiao, J Y, Bao, L, Deng, X B, Li, and H, Li
Published: 2018

4. A PRECISION EXPERIMENT ON ELECTRONS, PHOTONS AND MUONS AT LHC

Author: Felicitas Pauss, Y. Tang, E.L. Florian, G. Landi, M. Zhao, H. Hoorani, Wu Wm, Z. Wei, S. Zhang, Xu Zz, Ren-Yuan Zhu, Luciano Barone, Igor Vorobiev, H. Gao, Jin Bn, D. Luckey, A. Vorobiev, Qi An, A. Nippe, D. Richter, Hasan Ah, Alexander Malinin, Panos A Razis, G. Tsipolitis, L. Bragin, A. Gurtu, Manjit Kaur, G. Forconi, Yang Cy, Z. Guo, J. John, C. Qian, Liu Gl, P. Kapinos, S. Tzamarias, M. Gao, C. Neyer, E. Brambilla, Martin Jp, W. Chen, A. Klimentov, Wang Zm, Shi Xr, R. Desalvo, Streit, R. Eichler, M. Merk, P. G. Rancoita, Romeo Gc, P. Spillantini, W. Wang, Pierluigi Paolucci, N. E. Moulai, A. Hasan, Yonggang Wang, Péter Lévai, Lin Wl, Chen Hf, H. Vongunten, Wang Kl, F. Frasconi, Gong Zf, Zhang Yf, J. Bai, Carlos Willmott, J. Lampinen, Speranza Falciano, J. Berdugo, Zhang Xy, Zhao Gm, E. Shi, C. Williams, T. Ferguson, Yang Cg, Roberto Battiston, S. Kim, B. Borgia, Yu Cw, Y. Zeng, Chien Cy, A. Lebedev, Dong-Chul Son, T. Kramer, J. J. Blaising, Marco Meschini, H. Vogel, D. Kirkby, H. Anderhub, Xie Yy, D. Churakov, Zhou Mh, V. K. Gupta, V. Dratzig, C. Fang, Roberto Castello, Wei Cl, Ding Zs, Y. Yang, G. Liu, P. LeCoultre, W. Wallraff, J. Ulbricht, B. Springfellow, Chen Zhanying, D. Boscherini, J. Behrens, Gianpaolo Carlino, F. DeNotaristefani, Wang Yf, P. Lebrun, J. He, D. Goujon, L. Collaborat, C. Gu, S. K. Gupta, H. Shen, G. Lacommare, A. Rozjkov, Dova Mt, G. Ciancaglini, T. Ypsilantis, S. Banerjee, H. Yen, Salicio Jm, G. Bruni, S. Easo, A.H. Walenta, H. Li, V. Plyaskin, T. Pennington, S. Chen, G. Maccarone, K. Yang, X. Cui, Christopher George Tully, Springfellow Bc, Y.J. Pei, István T. Horváth, H. Elmamouni, Yan Ds, C. Delpapa, G. Laurenti, Samuel C.C. Ting, G. F. Sussino, Yen Hc, Yu Bt, Y. Zhang, Y. Ossipyan, Mariagrazia Alviggi, E. P. Velikhov, Sun Lz, J. P. Martin, L. Tauscher, Wang Jh, S. Chung, Chaturvedi Uk, Harvey B Newman, Dai Ts, K. Hilgers, G. Zhao, X. Zhang, J. Qu, P. Berges, Syed Aa, W. Wu, J. Riedlberger, G. Schwering, T. Lehmann, G. Terzi, S. Su, Alberto Aloisio, E. Dénes, R. Sehgal, Lin Zy, Sun Jy, Jung-Tsung Shen, M. Caria, S. Depasquale, Guo-Ming Chen, K. Freudenreich, Bolozdynya Ai, D. P. Stickland, Y. H. Chang, Cui Xt, E. Shumilov, X. Fang, K. Subhani, Ulf Roser, Rizvi Ha, F. Ciralli, L. Hsu, You Jm, Pei Yj, Zhu Gy, F. Wang, Y. Shabelski, I. Vetlitsky, Chen Wz, P. Koikkalainen, E. Klimenko, Dai Gl, V. Shoutko, Guo Zy, M. T. Dova, Wang Xx, M. Maity, W. Zhong, Egidio Longo, J. Sarvas, Malhotra Pk, P. Zemp, J. Han, He Hl, X. Hu, J. Salicio, I. Brock, Wu Sx, Nicanor Colino, Pozhidaev, Zhou Rm, S. Pensotti, X. Tang, Antonino Zichichi, D. Pandoulas, G. Zhu, Y. Mir, Francesca Nessi-Tedaldi, M. He, Q. Li, P. A. Piroué, B. Zhou, Y. Takahashi, Marta Felcini, Y. Mi, P. Ford, L. Kettunen, Chen Zm, Tariq Aziz, Ting Scc, M. Marino, J. Zimányi, He Jt, Ting Sm, D. Akimov, C. Grab, P. Vikas, H. He, N. Yunus, U. K. Chaturvedi, Zhao Yl, G. Zamora, Yin Cy, C. Maña, R. Li, A. Schulz, Chen Gm, J. Sun, A. Arefiev, Li Ht, Mingshui Chen, P. Gu, Li Pj, M. Zhou, Yeh Sc, M. Ge, R. Barillère, G. Romeo, G. Susinno, E. Gonzalez, Gao Hx, S. Lanzano, Adrian Biland, Rancoita Pg, H. F. Chen, J. D. Burger, B. Checcuci, G. Rahal-Callot, Shen Dz, Bencze Gl, M. Liang, Alviggi Mg, Ph Fisher, V. Koutsenko, H. Rykaczewski, Giovanni Organtini, Akimov Dy, Steven Ahlen, C. Li, Y. Zhao, Bai Jz, Zhang Cz, G. Gratta, Yuan-Pern Lee, A. Bykov, A. Engler, Federico Cindolo, N. Klassen, C. Yin, R. A. Khan, X. L. Wang, Hsu Ls, Lijun Sun, Zhou Sm, A. Malofeev, Feng Cd, Yang Ks, J.M. LeGoff, B. Xu, Hu Gq, Ye Sx, G. Alkahazov, Zhu Ry, W. Su, Kim Jk, L. Xu, P. Rosselet, Bryan R. Smith, D.H. Nan, Yang Yc, C. Ye, S. Zitzen, G. Faber, S. C. Tonwar, Z. Xue, H. Hillemanns, V. P. Andreev, R. Wang, M. Pauluzzi, M. Schoentag, Bragin La, C. Si, K. Sudhakar, D.D. Carmony, Khan Ra, Crisostomo Sciacca, Marco Pieri, Mao Yf, S. Wang, Liu Hm, Z. Qi, Y. Ye, R. Timellini, Gu Ch, M. Lenti, J. Seguinot, X. Xia, P. Arce, G. Coignet, W. Krenz, Anderson Al, Chen Zhang, D.W. Schmitz, Hu Xg, J. Ye, Yuehong Xie, Vincenzo Innocente, Fang Xl, B. Jin, W. Lu, Qureshi Kn, G. Zheng, C. Yu, Jiang Mh, H. Lan, L. Clare, D. Ren, L. J. Gutay, N. Shivarov, Claudio Luci, Gu Px, C. Spartiotis, Qu Yh, Chen Hc, U. Becker, B. Bencheick, Lin Wt, Lu Ys, P. Li, C. Nemoz, S. Hua, Joseph A. Paradiso, Robert Clare, H. Suter, G. Polivka, D. Duchesneau, L. Liu, V. Mokhnatuk, Xia Xm, S. Dutta, Kim Yg, M. Dhina, A. Rubbia, Legoff Jm, Dratzig, W. G. Ma, Paul Lecoq, M. Peiri, S. R. Chendvankar, H. Pan, C. Dionisi, Shi Ew, U. Vikas, Tamas Ferenc Csorgo, A. Contin, Z. Ren, M. Hansli, M. Capell, R. Nania, S. Zhou, Tang Xw, R. Siedling, N.A. Chernoplekov, R. Kraemer, D. DiBitonto, P. Bruni, A. L. Anderson, M. Lebeau, Pablo Garcia-Abia, X. Shi, Yuan Xl, Alain Hervé, Cui Xy, Giuseppe Iacobucci, D. Yan, H. Kalviainen, Churakov Dl, F. J. Eppling, S. Qian, M. Steuer, Zamora Gy, D. H. Wright, N. Gheordanescu, M. Schneegans, L. Servoli, J. Weber, Lee Yy, Zheng Wang, H. Larsen, Yi Jiang, L. Romero, J. F. Zhou, C. Wei, C. Coca, B. Yu, Anselmo Margotti, Howard A. Stone, A. Bujak, Oliver Kornadt, T.S. Dai, M. Toporowsky, Qi Zd, M. Pohl, R. Ayad, Kumar Ks, Cai Xd, I. Hosvatti, J.H. Wang, H. A. Rizvi, Q. Lin, D. Shen, J. Kim, M. MacDermott, Gerard Fernandez, J. Heikkonen, R. Zhou, D. Pop, Peter Denes, M. A. Niaz, Carlo Civinini, H. Liu, W. Yang, A. Kunin, Justin C.Y. Wu, M. Maolinbay, A. Koski, R. Mount, Moulai Ne, M. Bosetti, Chang Yh, S. Lelekhov, J. Field, J. Yan, M. Bourquin, K. Strauch, Zhou Jf, F. Cesaroni, S. Mangla, Gupta Sk, Wu Rj, P. Extermann, V. G. Timofeev, Yin Zw, Saverio D'Auria, Deshpande Pv, Davide Piccolo, Jozsef Toth, M. Jongmanns, M. Chiarini, X. Feng, S. N. Ganguli, M.E. Sarakinos, M. Aguilar-Benitez, G. Passaleva, W. Ni, B. Z. Yang, H. Hofer, F. Spurny, Yongsun Kim, G. M. Bilei, Z. F. Gong, M. Rattaggi, E. Geulig, Nan Dh, E. Oja, Emilio Leonardi, Elisabetta Gallo, M. Bocciolini, Su Wt, R. Bock, Z. Yin, S. Patricelli, F. Wittgenstein, Marcella Diemoz, D. Hatzifotiadou, Zheng Gr, P. Kozma, Piroue Pa, Blaising Jj, Valverde Jl, K. N. Qureshi, Chen Hs, Yu Zq, A. Tsaregorodtsev, F. Cotorobai, Gutay Lj, Ye Ch, Wang Cr, Lan Hb, Bolek Wyslouch, N. Xiao, Sau Lan Wu, A. Marin, Waclaw Karpinski, V. Kim, N. Ojala, Lu Wz, V. Gantmaher, Guo Jk, Shabelski Ym, Rodriguez Fj, F. Anselmo, Ge Mz, X. Yuan, R. Wu, S. Waldmeier, R. Mikkonen, A. Pevsner, L. Urbán, A. Bolozdynya, J. Valverde, S.W Ye, Ye Jb, Qu Js, Y. Qu, Zhang Nj, A. C. Weber, A. Chen, S. Shotkin, T. Angelescu, I. Karpushov, Q. Ye, E. Valente, C. Feng, T. Massam, G. Dai, D. McNally, M. Jin, B. Zhang, Kajari Mazumdar, X. D. Cai, S. Khokhar, T.R. McMahon, M. Zeng, G. Han, Y. Lu, M. Steinacher, Florian El, G. Viertel, Kim Sc, Xue Zl, Zhen Zhang, S. Xie, Mw Gruenewald, J. Perrier, J. Schwenke, Xie Pp, L. Martinez-Laso, G. Mirabelli, Zhang Zp, P. Marchesini, Feng Xq, M. Röhner, Z. Lin, Stickland Dp, Li Rb, K. Lübelsmeyer, J. You, P. Deguevera, Li Bm, Liu Lb, I. Scott, Y. Hu, G. Hu, Yu. Zalite, Lamberto Luminari, Vongunten Hp, W. Braunschweig, R. Deasmundis, G. Brugnola, Walenta Ah, Pierre Lecomte, G. Sartorelli, Chen Wy, G. Yang, Marco Schioppa, B. Delacruz, F. J. Rodriguez, V. Grazjilis, Yang Bz, Eppling Fj, Ma Wg, P. V. Deshpande, O. Adriani, Chunjie Wang, Z. Yu, Liang Yn, C. Y. Chien, C. Yang, J. Ma, K. Tung, K. Wang, P. Xie, Q. Gao, Zhong Wz, B. L. Betev, B. Li, N. J. Zhang, M. Priszuyak, Giuseppe Levi, Ma Jm, Luca Lista, D. Fernandez, Yanwen Liu, Liu Yy, Willis Lin, Chen Sn, A. M. Cartacci, R. Raghavan, Zhang Xs, M. Choi, R. Rickenbach, Z. Z. Xu, L. Cifarelli, Tonwar Sc, Yu. Kolotaev, V. Pojidaev, Han Gy, F. Palmonari, N. Scholz, M. Wadhwa, V. R. Krastev, F. Block, M. Vomacha, A. A. Syed, M. Rescigno, L. Votano, Fisher Ph, Bilei Gm, Jun Guo, B. Lindemann, Y. Mao, P. Giusti, M. Jiang, Wang Wm, H. Gerwig, Ganguli Sn, C. Burgos, Tung Kl, K. Shankar, F. Behner, Andrea Baschirotto, Ni Wt, Hua Sk, M. Zofka, Raffaello D'Alessandro, G. Anzivino, Wei Zy, Z. Ding, I. Schegelev, T. Paul, Marcos Cerrada, Sergei Petrovich Novikov, Yu. Galaktionov, Cartacci Am, J. Alcaraz, Choi Mt, Cheng Chen, A. Mihul, Hu Yl, W. J. Burger, C. Zaccardelli, Jian-Ping Chen, S. C. Yeh, T. Barillari, Aziz, T., Bock, R., Braunschweig, W., Geulig, E., Hilgers, K., Hillemanns, H., Karpinski, W., Kornadt, O., Krenz, W., Lehmann, T., Lindemann, B., Lubelsmeyer, K., Nippe, A., Pandoulas, D., Pei, Y. J., Rohner, M., Schmitz, D., Schoentag, M., Schulz, A., Dratzig, V., Schwenke, J., Schwering, G., Siedling, R., Subhani, K., Toporowsky, M., Wallraff, W., Weber, A., Xiao, N., Zeng, Y., Zhou, J. F., Zitzen, S., Blaising, J. J., Coignet, G., Lebeau, M., Schneegans, M., Chien, C. Y., Fisher, P. H., Paul, T., Pevsner, A., Spartiotis, C., Li, H., Wang, W. M., B. T., Yu, Zhou, S. M., Bai, J. Z., Chen, C., Chen, G. M., Chen, H. S., Chen, S. N., Dai, G. L., Fang, C., J. T., He, X. G., Hu, Jin, B. N., Lan, H. B., B. M., Li, H. T., Li, R. B., Li, Liu, H. M., Y. S., Lu, J. M., Ma, Mao, Y. F., Y. H., Qu, Shen, J., Tang, X. W., Tung, K. L., Wang, F., Wang, J. H., Wei, C. L., R. J., Wu, Xie, P. P., Yan, J., Yang, C. G., Yang, K. S., Z. Q., Yu, Zheng, G. R., Zhu, G. Y., Zhang, B., Chen, W. Z., Chen, Z. M., Guo, Z. Y., Liang, Y. N., Liu, G. L., Nan, D. H., J. S., Qu, Yin, C. Y., Zhang, C. Z., Block, F., Boscherini, D., Bruni, G., Bruni, P., Romeo, G. C., Chiarini, M., Cindolo, F., Ciralli, F., Dauria, S., Delpapa, C., Frasconi, F., Giusti, P., Iacobucci, G., Levi, G., Maccarone, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Sartorelli, G., Timellini, R., Tzamarias, S., Banerjee, S., Chendvankar, S. R., Deshpande, P. V., Ganguli, S. N., Gupta, S. K., Gurtu, A., Malhotra, P. K., Mazumdar, K., Raghavan, R., Shankar, K., Sudhakar, K., Tonwar, S. C., Ahlen, S., Marin, A., Zhou, B., Angelescu, T., Cotorobai, F., Gheordanescu, N., Mihul, A., Pop, D., Bencze, G. L., Csorgo, T., Denes, E., Hosvatti, I., Levai, P., Priszuyak, M., Toth, J., Urban, L., Zimanyi, J., Kumar, K. S., Kunin, A., Scott, I., Strauch, K., Anderson, A. L., Becker, U., Berges, P., Burger, J. D., Capell, M., Chang, Y. H., Chen, J., Chen, M., Chung, S., Clare, L., Clare, R., Dai, T. S., Eppling, F. J., Klimentov, A., Koutsenko, V., Kramer, T., Lebedev, A., Luckey, D., Rubbia, A., Sarakinos, M. S., Shotkin, S., Smith, B., Steuer, M., S. C. C., Ting, S. M., Wyslouch, B., Gantmaher, V., Grazjilis, V., Klassen, N., Ossipyan, Y., Schegelev, I., Timofeev, V., Chen, A., Lin, W. T., Barillari, T., Schioppa, M., Susinno, G., Adriani, O., Cartacci, A. M., Ciancaglini, G., Civinini, C., Dalessandro, R., Gallo, E., Meschini, M., Pojidaev, V., Spillantini, P., Wang, Y. F., Anzivino, G., Depasquale, S., Votano, L., Alcaraz, J., Anselmo, F., Barillere, R., Brugnola, G., Colino, N., Desalvo, R., Felcini, M., Ford, P., Gerwig, H., Herve, A., Innocente, V., Lacommare, G., Larsen, H., Laurenti, G., Lecoq, P., Legoff, J. M., Marino, M., Nemoz, C., Pieri, M., Salicio, J., Williams, C., Wittgenstein, F., Zichichi, A., Bourquin, M., Ayad, R., Bencheick, B., Cai, X. D., Chaturvedi, U. K., Chen, W. Y., Cui, X. T., Cui, X. Y., Dova, M. T., Gu, C., Hasan, A. H., Hatzifotiadou, D., H. L., He, Hu, G., Khan, R. A., Kaur, M., Khokhar, S., Valverde, J. L., Florian, E. L., Lin, Q., Liu, L. B., Mi, Y., Mir, Y., Moulai, N. E., Niaz, M. A., Qian, S., Qureshi, K. N., Ren, Z., Rizvi, H. A., Sehgal, R., Shabelski, Y. M., Sun, J. Y., Sun, L. Z., Syed, A. A., Vikas, P., Vikas, U., Wadhwa, M., Wang, K. L., Wang, Z. M., S. X., Wu, Xia, X. M., Yang, C. Y., Yang, G., C. H., Ye, Ye, Q., Ye, Y., You, J. M., Yunus, N., Zamora, G. Y., Zeng, M., Zhang, Z. P., Zhao, M., Ding, Z. S., M. Z., Ge, Han, G. Y., Jin, M., Tang, Y., Wang, R., C. W., Yu, Zhang, X. S., An, Q., Chen, H. F., Gao, Q., Gong, Z. F., C. H., Gu, Jiang, Y., Li, C., Lin, Z. Y., Liu, Y. Y., W. Z., Lu, W. G., Ma, Wang, C. R., Wu, J., Z. Z., Xu, Yang, B. Z., J. B., Ye, S. X., Ye, Zhou, M. H., Su, S., Lee, Y. Y., W. T., Ni, Yang, Y. C., Yeh, S. C., Yen, H. C., Takahashi, Y., Chen, H. C., Han, J. R., He, M., Jiang, M. H., Li, Q., Zhang, N. J., Zhang, X. Y., Rosselet, P., Lebrun, P., Martin, J. P., Aguilarbenitez, M., Arce, P., Berdugo, J., Burgos, C., Cerrada, M., Fernandez, D., Fernandez, G., Garciaabia, P., Gonzalez, E., Mana, C., Martinezlaso, L., Rodriguez, F. J., Romero, L., Salicio, J. M., Willmott, C., Baschirotto, A., Bosetti, M., Castello, R., Pensotti, S., Rancoita, P. G., Rattaggi, M., Terzi, G., Akimov, D. Y., Arefiev, A., Bolozdynya, A. I., Churakov, D. L., Galaktionov, Y., Kolotaev, Y., Malinin, A., Plyaskin, V., Rozjkov, A., Shumilov, E., Shoutko, V., Vetlitsky, I., Vorobiev, I., Bragin, L. A., Chernoplekov, N., Karpushov, I., Klimenko, E., Lelekhov, S., Malofeev, A., Mokhnatuk, V., Novikov, S., Velikhov, E., Aloisio, Alberto, Alviggi, Mariagrazia, Brambilla, E., Carlino, G., Deasmundis, R., Lanzano, S., Lista, L., Paolucci, P., Patricelli, Sergio, Piccolo, D., Sciacca, Crisostomo, Razis, P., Seguinot, J., Ypsilantis, T., Gratta, G., Gruenewald, M., Kirkby, D., Mount, R., Newman, H., Shi, X. R., Tully, C., Zaccardelli, C., Zhu, R. Y., Battiston, R., Bilei, G. M., Caria, M., Checcuci, B., Easo, S., Krastev, V., Pauluzzi, M., Servoli, L., Wang, S., Cifarelli, L., Denes, P., Gupta, V., Piroue, P. A., Stone, H., Stickland, D. P., Wright, D., Barone, L., Borgia, B., Cesaroni, F., Denotaristefani, F., Diemoz, M., Dionisi, C., Falciano, S., Leonardi, E., Longo, E., Luci, C., Luminari, L., Mirabelli, G., Organtini, G., Rescigno, M., Valente, E., Andreev, V., Alkahazov, G., Bykov, A., Kapinos, P., Kim, V., Tsaregorodtsev, A., Vorobiev, A., Zalite, Y., Shen, H., W. M., Wu, Pan, H., Qian, C., Si, C., Xie, S., Xu, B., Yang, W., Zhang, S., Fang, X. L., Feng, C. D., Feng, X. Q., Gao, H. X., Gao, M., P. X., Gu, Guo, J. K., G. Q., Hu, Y. L., Hu, Hua, S. K., P. J., Li, Z. D., Qi, Shen, D. Z., Shi, E. W., W. T., Su, Wang, X. X., Wei, Z. Y., Xie, Y. Y., Xu, L., Xue, Z. L., Yan, D. S., Yin, Z. W., Yuan, X. L., Zhang, Y. F., Zhao, G. M., Zhao, Y. L., Zhong, W. Z., Zhou, R. M., Walenta, A. H., Shivarov, N., Choi, M. T., Kim, J. K., Kim, Y. G., Kim, S. C., Son, D., Hsu, L. S., Lin, W. L., Dibitonto, D., Pennington, T., Bujak, A., Carmony, D. D., Gutay, L. J., Mcmahon, T., Springfellow, B. C., Anderhub, H., Behner, F., Behrens, J., Betev, B., Biland, A., Dhina, M., Faber, G., Freudenreich, K., Hansli, M., Hofer, H., Horvath, I., Jongmanns, M., Lecomte, P., Lecoultre, P., Macdermott, M., Maolinbay, M., Marchesini, P., Mcnally, D., Nessitedaldi, F., Neyer, C., Paradiso, J., Pauss, F., Pohl, M., Rahalcallot, G., Ren, D., Scholz, N., Roser, U., Rykaczewski, H., Suter, H., Ulbricht, J., Viertel, G., Vongunten, H. P., Waldmeier, S., Weber, J., and Zemp, P.
Subjects: Physics, Nuclear and High Energy Physics, Wire chamber, Photon, Large Hadron Collider, HADRON CALORIMETRY, LUND MONTE-CARLO, Physics::Instrumentation and Detectors, Detector, TRANSVERSE-MOMENTUM, BOUND-STATES, CERIUM FLUORIDE, Particle detector, Particle identification, Semiconductor detector, Nuclear physics, Upgrade, PYTHIA VERSION 4.8, P COLLIDER, Physics::Accelerator Physics, GAS SAMPLING CALORIMETER, High Energy Physics::Experiment, POSITRON ANNIHILATIONS, Instrumentation, L3 EXPERIMENT
Abstract: We describe the upgrade of the L3 detector for running at LHC. The principle goals are the precise measurement of electrons, photons and muons.
Published: 2016

5. [Investigation and analysis of the coverage rate of hepatitis B vaccine in Gansu province after 12 years since integrated into expanded programme on immunization]

Author: P G, Wang, X S, Zhang, J, An, X X, Wang, N J, Zhang, Y, Tang, X L, Wang, X F, Liang, B L, Zhang, Y Z, Jiao, J Y, Bao, L, Deng, X B, Li, and H, Li
Published: 2016

6. MULTI-TeV GAMMA-RAY OBSERVATION FROM THE CRAB NEBULA USING THE TIBET-III AIR SHOWER ARRAY FINELY TUNED BY THE COSMIC RAY MOON'S SHADOW

Author: M. Amenomori, X. J. Bi, D. Chen, S. W. Cui, null Danzengluobu, L. K. Ding, X. H. Ding, C. Fan, C. F. Feng, Zhaoyang Feng, Z. Y. Feng, X. Y. Gao, Q. X. Geng, H. W. Guo, H. H. He, M. He, K. Hibino, N. Hotta, Haibing Hu, H. B. Hu, J. Huang, Q. Huang, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, C. Kato, K. Kawata, null Labaciren, G. M. Le, A. F. Li, J. Y. Li, Y.-Q. Lou, H. Lu, S. L. Lu, X. R. Meng, K. Mizutani, J. Mu, K. Munakata, A. Nagai, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, H. Onuma, T. Ouchi, S. Ozawa, J. R. Ren, T. Saito, T. Y. Saito, M. Sakata, T. K. Sako, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, M. Takita, Y. H. Tan, N. Tateyama, S. Torii, H. Tsuchiya, S. Udo, B. Wang, H. Wang, X. Wang, Y. Wang, Y. G. Wang, H. R. Wu, L. Xue, Y. Yamamoto, C. T. Yan, X. C. Yang, S. Yasue, Z. H. Ye, G. C. Yu, A. F. Yuan, T. Yuda, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, Y. Zhang, Yi Zhang, null Zhaxisangzhu, and X. X. Zhou
Subjects: Physics, Scintillation, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Gamma ray, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, magnetic fields, Power law, Air shower, Crab Nebula, cosmic rays, Space and Planetary Science, pulsars: individual (Crab pulsar), Moon, ISM: individual (Crab Nebula), Cherenkov radiation, Energy (signal processing), gamma rays: observations
Abstract: The Tibet-III air shower array, consisting of 533 scintillation detectors, has been operating successfully at Yangbajing in Tibet, China since 1999. Using the dataset collected by this array from 1999 November through 2005 November, we obtained the energy spectrum of $\gamma$-rays from the Crab Nebula, expressed by a power law as $(dJ/dE) = (2.09\pm0.32)\times10^{-12} (E/{\rm 3 TeV})^{-2.96\pm0.14} {\rm cm}^{-2} {\rm s}^{-1} {\rm TeV}^{-1}$ in the energy range of 1.7 to 40 TeV. This result is consistent with other independent $\gamma$-ray observations by imaging air Cherenkov telescopes. In this paper, we carefully checked and tuned the performance of the Tibet-III array using data on the moon's shadow in comparison with a detailed Monte Carlo simulation. The shadow is shifted to the west of the moon's apparent position as an effect of the geomagnetic field, although the extent of this displacement depends on the primary energy positively charged cosmic rays. This finding enables us to estimate the systematic error in determining the primary energy from its shower size. This error is estimated to be less than $\pm$12% in our experiment. This energy scale estimation is the first attempt among cosmic-ray experiments at ground level. The systematic pointing error is also estimated to be smaller than $0\fdg011$. The deficit rate and position of the moon's shadow are shown to be very stable within a statistical error of $\pm$6% year by year. This guarantees the long-term stability of point-like source observation with the Tibet-III array. These systematic errors are adequately taken into account in our study of the Crab Nebula., Comment: 12 pages, 16 figures, accepted by ApJ
Published: 2009

7. The Fermilab E771 spectrometer A large aperture spectrometer to study charm and beauty states as detected by decays into muons

Author: H.C. Ballagh, E. Gorini, C. R. Wang, S. Ramachandran, C. T. Murphy, Z. L. Cao, M. Panareo, C. Durandet, W. Selove, J. Lys, H. H. Bingham, M. He, J. Jennings, S. Misawa, Kwong Lau, Peter Mazur, T. Alexopoulos, P. Hanlet, J. Budagov, S. Conetti, P. Creti, K. S. Nelson, J. Trischuk, L. Antoniazzi, W. Yang, C. Wei, V. Elia, A. P. McManus, D. E. Wagoner, K. Hagan-Ingram, M. Jenkins, P. Torre, A. Boden, T. Lawry, R. P. Smith, M. Haire, V. Golovatyuk, Leonard Spiegel, C. Dukes, A. Blankman, S.N. Zhang, L. Fortney, W. Kononenko, G. Corti, E. Evangelista, G. Liguori, I. Tzamouranis, M. Recagni, D. Judd, A. Erwin, N. J. Zhang, F. Grancagnolo, J. Rhoades, Gianluca Introzzi, S.V. Borodin, Martin M. Block, Germano Bonomi, V. Pogosyan, T.Y. Chen, S. Tokar, N. Yao, G. H. Mo, Bradley Cox, G. Cataldi, M. Arenton, M. Cooper, David B. Cline, K. Clark, B. T. Zou, J. Segal, A. Ledovskoy, W. Kowald, L. Turnbull, J. G. Sun, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, S. V., Borodin, J., Budagov, Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, Elia, Valerio, A. R., Erwin, E., Evangelista, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, W., Kononenko, W., Kowald, K., Lau, T., Lawry, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A. P., Mcmanu, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosyan, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, I., Tzamourani, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, S. N., Zhang, and B. T., Zou
Subjects: Physics, GLASS ARRAY, Nuclear and High Energy Physics, Resistive touchscreen, Particle physics, Muon, Proton, Spectrometer, Physics::Instrumentation and Detectors, GEV POSITRONS, SHOWER, Large aperture, PERFORMANCE, RESISTIVE PLATE COUNTERS, Nuclear physics, RADIATION-DAMAGE, High mass, High Energy Physics::Experiment, Fermilab, Charm (quantum number), CALORIMETER, Nuclear Experiment, Instrumentation, SYSTEM, TRIGGER
Abstract: This paper describes the final incarnation of the Fermilab High Intensity Lab spectrometer which operated for ten years in the Proton West Area of Fermilab in the execution of two experiments (E537 and E705) which studied hadroproduction of high mass dimuon pairs. The version of the spectrometer used in E771 differed from earlier versions of the spectrometer by the addition of a silicon microstrip detector, pad chambers and resistive plate counters. These additions were implemented to give the spectrometer the capability of detection of secondary decay vertices from B --> mu or B --> J/psi --> mu mu decays. As discussed, the spectrometer in a short data taking period was able to address many kinds of physics, other than beauty decays.
Published: 1996

8. Primary cosmic-ray energy spectrum around the knee energy region measured by the Tibet hybrid experiment

Author: M Amenomori, S Ayabe, S W Cui, null Danzengluobu, L K Ding, X H Ding, C F Feng, Z Y Feng, X Y Gao, Q X Geng, H W Guo, H H He, M He, K Hibino, N Hotta, Haibing Hu, H B Hu, J Huang, Q Huang, H Y Jia, F Kajino, K Kasahara, Y Katayose, C Kato, K Kawata, null Labaciren, G M Le, J Y Li, H Lu, S L Lu, X R Meng, K Mizutani, J Mu, K Munakata, A Nagai, H Nanjo, M Nishizawa, M Ohnishi, I Ohta, H Onuma, T Ouchi, S Ozawa, J R Ren, T Saito, M Sakata, T Sasaki, M Shibata, A Shiomi, T Shirai, H Sugimoto, M Takita, Y H Tan, N Tateyama, S Torii, H Tsuchiya, S Udo, T Utsugi, B S Wang, H Wang, X Wang, Y G Wang, H R Wu, L Xue, Y Yamamoto, C T Yan, X C Yang, S Yasue, Z H Ye, G C Yu, A F Yuan, T Yuda, H M Zhang, J L Zhang, N J Zhang, X Y Zhang, Y Zhang, Yi Zhang, null Zhaxisangzhu, X X Zhou, and The Tibet Asã Collaboration
Subjects: Physics, History, Range (particle radiation), Proton, chemistry.chemical_element, Cosmic ray, Spectral line, Computer Science Applications, Education, Nuclear physics, chemistry, Primary (astronomy), Energy spectrum, Helium, Energy (signal processing)
Abstract: The Tibet hybrid experiment composed of emulsion chambers, burst detectors and the Tibet-II air-shower array was done at Yangbajing (4,300m above sea level, 606 g/cm2) in Tibet. For 3-year operation, we have observed 177 γ-families (ΣEγ > 20 TeV) accompanying air showers with the shower size Ne > 2 × 105. Using this data set and a neural network method to select proton and helium induced events, the primary proton and helium energy spectra are deduced between 1015 and 1016eV. The proton spectrum, thus obtained, can be expressed by a single power-law function with a differential index of −3.01±0.11 and −3.05±0.12 based on the QGSJET+HD and SIBYLL+HD models, respectively, which are steeper than that extrapolated from the direct observations of −2.74±0.01 in the energy range below 1014 eV. Our result suggests that the main component responsible for making the knee structure of the all-particle spectrum should be composed of nuclei heavier than helium.
Published: 2006

9. Primary proton spectrum around the knee observed by the Tibet air-shower experiment

Author: Jieru Ren, M. Ohnishi, Katsuaki Kasahara, Kazumasa Kawata, H. Y. Jia, G. C. Yu, T. Ouchi, Xuan Zhang, J. Y. Li, X. Y. Gao, L. Xue, Q. Huang, N. Tateyama, J. Mu, Zhaxisangzhu, G. M. Le, Shoji Torii, X. H. Ding, Jing Huang, K. Hibino, Yi Zhang, Y. Yamamoto, Harufumi Tsuchiya, N. Hotta, Z. Y. Feng, A. Nagai, M. Amenomori, S. Ayabe, H. Nanjo, T. Shirai, Hsiao-Chi Lu, K. Mizutani, X. R. Meng, Haibing Hu, N. J. Zhang, Chihiro Kato, M. He, Shunsuke Ozawa, H. W. Guo, M. Shibata, To. Saito, Jia Zhang, Y. Zhang, Kazuoki Munakata, I. Ohta, S. W. Cui, F. Kajino, C. T. Yan, X. C. Yang, A. F. Yuan, Z. H. Ye, H. Onuma, T. Yuda, T. Sasaki, S. Yasue, H. R. Wu, Q. X. Geng, X. Wang, Masato Takita, H. B. Hu, Huaguang Wang, Masaki Nishizawa, Labaciren, L. K. Ding, M. Sakata, Danzengluobu, Cunfeng Feng, A. Shiomi, Y. H. Tan, H. H. He, H. M. Zhang, X. X. Zhou, Yu Wang, H. Sugimoto, S. Udo, S. L. Lu, Y. Katayose, and D. Chen
Subjects: Physics, Atmospheric Science, Range (particle radiation), Proton, Astrophysics::High Energy Astrophysical Phenomena, Aerospace Engineering, chemistry.chemical_element, Flux, Astronomy and Astrophysics, Cosmic ray, Spectral line, Nuclear physics, Geophysics, Air shower, chemistry, Space and Planetary Science, General Earth and Planetary Sciences, Nuclear emulsion, Helium
Abstract: Simultaneous observation of gamma-families and their accompanying air showers was performed at Yangbajing (4300 m above sea level) in Tibet with the emulsion chambers and burst detectors which were linked with the Tibet-II air-shower array. For three years operation, we observed 177 gamma-families (Sigma E-gamma > 20 TeV) accompanying air showers with the size N-e > 2 x 10(5). Using this data and the simulation code CORSIKA, we obtained the primary proton spectrum in the energy range of 10(15)-10(16) eV. The slope of the observed spectrum is steeper than that extrapolated smoothly from the lower energy region below 10(14) eV, irrespective of the interaction models assumed in the simulation. The uncertainty of the absolute flux of protons due to the interaction model dependence involved in the simulation codes is at most 30%, which is much weaker than results of other air-shower experiments. Our experiment shows low intensity of light components (proton and helium) independent of the interaction models suggesting that the main component responsible for making the knee structure of the all-particle spectrum is composed of nuclei heavier than helium. This is the first measurement of the differential energy spectra of primary protons by selecting them event by event at the knee energy region.
Published: 2006

10. Variation of Sun shadow in the Solar Cycle 23 observed with the Tibet air shower array

Author: Labaciren, H. R. Wu, N. Tateyama, K. Mizutani, X. H. Ding, Z. Y. Feng, S. Ayabe, Harufumi Tsuchiya, Shunsuke Ozawa, X. R. Meng, Q. X. Geng, M. Amenomori, C. T. Yan, Xuan Zhang, B. S. Wang, Zhaxisangzhu, T. Yuda, X. Wang, Jieru Ren, X. C. Yang, F. Kajino, Y. Katayose, H. B. Hu, M. Shibata, Y. G. Wang, Chihiro Kato, Huaguang Wang, A. F. Yuan, M. He, Y. Yamamoto, H. Y. Jia, Haibing Hu, I. Ohta, Q. Huang, G. M. Le, H. W. Guo, J. Mu, N. Hotta, M. Izumi, M. Sakata, K. Hibino, L. Xue, G. C. Yu, X. Y. Gao, Jing Huang, S. Udo, Danzengluobu, N. J. Zhang, Hsiao-Chi Lu, Cunfeng Feng, Katsuaki Kasahara, Z. H. Ye, H. Nanjo, T. Shirai, Masaki Nishizawa, L. K. Ding, Kazuoki Munakata, Y. Zhang, M. Ohnishi, S. Yasue, S. W. Cui, A. Nagai, Takeshi Saito, Masato Takita, Jia Zhang, Kazumasa Kawata, A. Shiomi, H. Onuma, T. Sasaki, H. M. Zhang, X. X. Zhou, H. Sugimoto, Y. H. Tan, H. H. He, S. L. Lu, J. Y. Li, Shoji Torii, T. Utsugi, and T. Ouchi
Subjects: Physics, Solar minimum, Atmospheric Science, Aerospace Engineering, Astronomy, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Solar maximum, Solar cycle, Geophysics, Earth's magnetic field, Space and Planetary Science, Physics::Space Physics, Shadow, Astrophysics::Solar and Stellar Astrophysics, General Earth and Planetary Sciences, Astrophysics::Earth and Planetary Astrophysics, Interplanetary spaceflight, Sun path
Abstract: According to many solar observations, the solar activity, during the Solar Cycle 23, is gradually declining to the quiet phase from the high state in 2000–2004. The Tibet air shower array has been continuing the observation of the shadow that cosmic rays make in the direction of the sun or the moon since 1991. We have shown the influence of the magnetic field around the sun, the interplanetary and the geomagnetic fields for the sun shadow at the multi-TeV region. We discuss the variation of the Sun’s shadow with the Gnevyshev gap (GG) in the maximum phase of the Solar Cycle 23. Unfortunately, the bottom in GG corresponds to off-observation period. Nonetheless, we found the anti-correlation between the significance of the Sun’s shadow and the variation of the magnetic field intensity around GG, although the statistical significance is not so high. It is expected that a detailed analysis of the Sun’s shadow will reveal interesting features of the anti-correlation.
Published: 2006

11. Are protons still dominant at the knee of the cosmic-ray energy spectrum?

Author: M. Sakata, Xuan Zhang, Danzengluobu, Cunfeng Feng, Jia Zhang, Kazuoki Munakata, S. W. Cui, N. Tateyama, Katsuaki Kasahara, N. Hotta, Hsiao-Chi Lu, H. Nanjo, Harufumi Tsuchiya, Y. G. Wang, T. Shirai, Takeshi Saito, S. Yasue, J. Y. Li, A. F. Yuan, K. Hibino, H. Y. Jia, Jieru Ren, L. Xue, Kazumasa Kawata, Masato Takita, Shoji Torii, Zhaxisangzhu, X. C. Yang, A. Nagai, Z. H. Ye, H. B. Hu, J. Mu, Jing Huang, X. H. Ding, H. Onuma, T. Sasaki, H. W. Guo, I. Ohta, Shunsuke Ozawa, Labaciren, K. Mizutani, H. M. Zhang, X. X. Zhou, T. Ouchi, Yi Zhang, M. Amenomori, Masaki Nishizawa, G. C. Yu, H. Sugimoto, Z. Y. Feng, S. Ayabe, Y. Yamamoto, Q. Huang, G. M. Le, Haibing Hu, C. T. Yan, X. R. Meng, Y. Zhang, T. Yuda, A. Shiomi, N. J. Zhang, H. R. Wu, Chihiro Kato, M. He, Y. H. Tan, L. K. Ding, H. H. He, F. Kajino, S. L. Lu, Y. Katayose, D. Chen, X. Y. Gao, M. Ohnishi, S. Udo, M. Shibata, Q. X. Geng, X. Wang, and Huaguang Wang
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Proton, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Monte Carlo method, Hadron, FOS: Physical sciences, chemistry.chemical_element, Cosmic ray, Astrophysics, Spectral line, Nuclear physics, chemistry, Event (particle physics), Helium
Abstract: A hybrid experiment consisting of emulsion chambers, burst detectors and the Tibet II air-shower array was carried out at Yangbajing (4,300 m a.s.l., 606 g/cm$^2$) in Tibet to obtain the energy spectra of primary protons and heliums. From three-year operation, these energy spectra are deduced between $10^{15}$ and $10^{16}$ eV by triggering the air showers associated with a high energy core and using a neural network method in the primary mass separation. The proton spectrum can be expressed by a single power-law function with a differential index of $-3.01 \pm 0.11$ and $-3.05 \pm 0.12$ based on the QGSJET+HD and SIBYLL+HD models, respectively, which are steeper than that extrapolated from the direct observations of $-2.74 \pm 0.01$ in the energy range below $10^{14}$ eV. The absolute fluxes of protons and heliums are derived within 30% systematic errors depending on the hadronic interaction models used in Monte Carlo simulation. The result of our experiment suggests that the main component responsible for the change of the power index of the all-particle spectrum around $3 \times 10^{15}$ eV, so-called ``knee'', is composed of nuclei heavier than helium. This is the first measurement of the differential energy spectra of primary protons and heliums by selecting them event by event at the knee energy region., Comment: This paper has been accepted for publication Physics Letters B on October 19th, 2005. This paper has been accepted for publication Physics Letters B on October 19th, 2005
Published: 2006

12. Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment

Author: X. Wang, Harufumi Tsuchiya, T. Ouchi, J. R. Ren, Y. Katayose, I. Ohta, J. Y. Li, Zhang X, N. Hotta, M. Shibata, To. Saito, N. J. Zhang, Shunsuke Ozawa, Jing Huang, and S. L. Lu
Subjects: Physics, Nuclear and High Energy Physics, Scanner, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Noise reduction, Monte Carlo method, Resolution (electron density), Process (computing), Optics, Quality (physics), Cascade, business, Instrumentation, Energy (signal processing)
Abstract: A new method of emulsion chamber analysis by using an image scanner is developed in order to process a large number of X-ray films used in the Tibet hybrid experiment which is carried out to observe primary proton spectrum in the PeV region. The experimental procedure in this method consists of multiple steps of processing the image of the X-ray films, i.e. the detection of cascade showers induced by high-energy γ-rays, the noise reduction, the spatial reconstruction of γ-families and their energy determination. The quality of the results obtained by the new method is compared with that obtained by the current manual method or Monte Carlo simulations. It is shown that sufficiently high quality of the emulsion chamber analysis is realized by the automatic method both in energy and geometrical resolution.
Published: 2004

13. Observation of Multi-T[CLC]e[/CLC]V Gamma Rays from the Crab Nebula using the Tibet Air Shower Array

Author: M. Amenomori, S. Ayabe, P. Y. Cao, null Danzengluobu, L. K. Ding, Z. Y. Feng, Y. Fu, H. W. Guo, M. He, K. Hibino, N. Hotta, Q. Huang, A. X. Huo, K. Izu, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, null Labaciren, J. Y. Li, H. Lu, S. L. Lu, G. X. Luo, X. R. Meng, K. Mizutani, J. Mu, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, T. Ouchi, J. R. Ren, T. Saito, M. Sakata, T. Sasaki, Z. Z. Shi, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, K. Taira, Y. H. Tan, N. Tateyama, S. Torii, T. Utsugi, C. R. Wang, H. Wang, X. W. Xu, Y. Yamamoto, G. C. Yu, A. F. Yuan, T. Yuda, C. S. Zhang, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, null Zhaxisangzhu, null Zhaxiciren, W. D. Zhou, and (The Tibet ASγ Collaboration)
Subjects: Physics, Scintillation, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy and Astrophysics, Astrophysics, Crab Nebula, Air shower, Space and Planetary Science, Energy spectrum, High Energy Physics::Experiment, Cherenkov radiation, Energy (signal processing)
Abstract: The Tibet experiment, operating at Yangbajing (4,300 m above sea level), is the lowest energy air shower array and the new high density array constructed in 1996 has sensitivity to $\gamma$-ray air showers at energies as low as 3 TeV. With this new array, the Crab Nebula was observed in multi-TeV $\gamma$-rays and a signal was detected at the 5.5 $\sigma$ level. We also obtained the energy spectrum of $\gamma$-rays in the energy region above 3 TeV which partially overlaps those observed with imaging atmospheric Cherenkov telescopes. This is the first observation of $\gamma$-ray signals from point sources with a conventional air shower array using scintillation detectors.
Published: 1999

14. Measurement of thebb¯Cross Section in800GeV/cProton-Silicon Interactions

Author: S. Misawa, S. Conetti, Martin M. Block, T. Alexopoulos, M. Cooper, H. C. Ballagh, Gianluca Introzzi, V. Elia, M. Jenkins, K. Hagan-Ingram, Leonard Spiegel, T.Y. Chen, R. P. Smith, M. Haire, P. Torre, E. Gorini, David B. Cline, G. H. Mo, Wannian Yang, M. He, K. Clark, Bradley Cox, B. T. Zou, G. Liguori, E. C. Dukes, W. Selove, A. R. Erwin, C. Durandet, Michael Wayne Arenton, N. Yao, Alexander Ledovskoy, C. T. Murphy, J. Lys, J. G. Sun, V. Golovatyuk, H. H. Bingham, L.R. Fortney, L. Turnbull, C. Wei, P. Creti, L. Antoniazzi, W. Kowald, D. Judd, C. R. Wang, A. Boden, D. E. Wagoner, P. Hanlet, W. Kononenko, K. S. Nelson, A. McManus, P.O. Mazur, N. J. Zhang, F. Grancagnolo, J. Rhoades, Z. L. Cao, Kwong Lau, J. Trischuk, A. Blankman, Stanislav Tokár, Germano Bonomi, V. Pogosyan, S. Ramachandran, G. Corti, and M. Panareo
Subjects: Physics, Proton, Silicon, General Physics and Astronomy, chemistry.chemical_element, Crystallography, Cross section (physics), Particle decay, chemistry, Production (computer science), B meson, Atomic physics, Nucleon, Bar (unit)
Abstract: The cross section for b{bar b} production in 800 GeV/c pN interactions has been measured in Fermilab experiment E771 to be 43{sup +27}{sub {minus}17}(stat){sup +7}{sub {minus}7}(syst) nb per nucleon from the observation of events in which both the b and the {bar b} decay semimuonically or a B decays into a J/{psi} followed by J/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}} . {copyright} {ital 1998} {ital The American Physical Society}
Published: 1999

15. Sun's shadow by 10 TeV cosmic rays under the influence of solar activity

Author: Zhaxiciren, B. Z. Dai, X. Y. Zhang, K. Taira, W. D. Zhou, I. Ohta, P. Y. Cao, N. Hotta, Z. Z. Shi, C. R. Wang, Z. Y. Feng, Hsiao-Chi Lu, H. Nanjo, Y. Yamamoto, S. Ayabe, N. Tateyama, T. Shirai, P. X. Wang, Shoji Torii, T. Yuda, N. J. Zhang, M. Ohnishi, H. W. Guo, J. Y. Li, Dongming Mei, K. Mizutani, Jia Zhang, C. S. Zhang, Jieru Ren, Huaguang Wang, A. Shiomi, Labaciren, S. M. Liu, M. Shibata, To. Saito, H. M. Zhang, Y. Katayose, X. W. Xu, M. Sakata, T. Sasaki, H. Sugimoto, H. Y. Jia, Katsuaki Kasahara, M. Amenomori, T. Ouchi, T. Utsugi, G. C. Yu, K. Izu, L. K. Ding, S. J. Zhou, C. Shi, F. Kajino, Zhaxisangzhu, X. R. Meng, Q. Huang, K. Hibino, W. Xie, M. He, Y. Fu, A. X. Huo, A. F. Yuan, Masaki Nishizawa, S. L. Lu, Y. H. Tan, G. X. Luo, and J. Mu
Subjects: Physics, Atmospheric Science, Sunspot, Astrophysics::High Energy Astrophysical Phenomena, Aerospace Engineering, Astronomy, Astronomy and Astrophysics, Astrophysics, Coronal loop, Solar cycle, Nanoflares, Solar wind, Geophysics, Space and Planetary Science, Physics::Space Physics, Coronal mass ejection, Astrophysics::Solar and Stellar Astrophysics, General Earth and Planetary Sciences, Astrophysics::Earth and Planetary Astrophysics, Heliospheric current sheet, Interplanetary magnetic field
Abstract: We examined the Sun's shadow by 10 TeV cosmic rays observed with the Tibet air shower array during the period from 1991 through 1997. The results suggest that there is a causal relation between the shadow's movement and the changing inclination of the heliospheric current sheet of the large-scale solar magnetic field. Thus, further observations with higher statistics may provide direct information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the phase of solar activity cycle.
Published: 1999

16. Sidereal daily variation of ∼10 TeV cosmic-ray intensity observed by the Tibet air shower array

Author: Katsuaki Kasahara, Masaki Nishizawa, T. Ouchi, C. S. Zhang, K. Morimoto, H. Sugimoto, Y. Yamamoto, T. Sasaki, K. Mizutani, J. R. Ren, S. Ayabe, K. Izu, Z. Z. Shi, A. Shiomi, D.L Hall, M. Shibata, Y. H. Tan, T. Yuda, S. Yasue, F. Kajino, K. Hibino, H. Wang, M. Amenomori, N. Tateyama, Satoru Mori, M. Ohnishi, Chihiro Kato, T. Hara, Shoji Torii, Dongming Mei, L. K. Ding, M. Sakata, To. Saito, I. Ohta, H. Nanjo, T. Shirai, J. Mu, K. Taira, H. Y. Jia, N. J. Zhang, Kazuoki Munakata, and N. Hotta
Subjects: Atmospheric Science, Observation period, Aerospace Engineering, Astronomy and Astrophysics, Cosmic ray, Celestial sphere, Atmospheric sciences, Declination, Intensity (physics), Geophysics, Air shower, Space and Planetary Science, Sidereal time, General Earth and Planetary Sciences, Environmental science, Variation (astronomy)
Abstract: We analyze the sidereal daily variation of galactic cosmic-ray intensity observed by the Tibet air-shower (AS) array in one year from January to December 1992. The Tibet AS array can detect the incident direction of each AS and allows us to examine the daily variations in different declination bands on the celestial sphere. The average hourly AS count is 26,372 and the total observation period is 5,651 hours. We analyze the hourly count rates of AS classified into nine cells according to the incident direction of each AS. The hourly count rates are corrected for the atmospheric pressure effect and also for the spurious variation due to the change in the AS size-distribution. We find that the resultant daily variations in sidereal, solar and antisidereal time are influenced by a significant variation (∼0.5%) which is common for the viewing directions. It is also found that such common variation is well eliminated in the “difference” variations between the eastern and western cells. From the harmonic analysis of the “difference” variations, it is concluded that there is no significant variation observed in one year of data.
Published: 1999

17. Sensitivity of ARGO-YBJ to different composition models in the energy range 10 ÷ 500 TeV

Author: C. BACCI, K. Z. BAO, F. BARONE, B. BARTOLI, S. BUSSINO, E. CALLONI, B. Y. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, F. CESARONI, P. CRETI, DANZENGLUOBU, B. D'ETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, G. DI SCIASCIO, Z. Y. FENG, Y. FU, X. Y. GAO, Q. X. GENG, H. W. GUO, H. H. HE, M. HE, Q. HUANG, M. IACOVACCI, N. IUCCI, H. Y. JAI, C. L. JING, F. M. KONG, H. H. KUANG, LABACIREN, B. LI, J. Y. LI, Z. Q. LIU, H. LU, X. H. MA, S. M. MARI, X. R. MENG, L. MILANO, J. MU, 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. K. YAO, G. C. YU, X. D. YUE, A. F. YUAN, M. ZHA, H. M. ZHANG, J. L. ZHANG, N. J. ZHANG, X. Y. ZHANG, ZHAXISANGZHU, ZHAXICIREN, Q. Q. ZHU, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARSELLA, GIOVANNI, MARTELLO, Daniele, PANAREO, Marco, C., Bacci, K. Z., Bao, F., Barone, B., Bartoli, Bernardini, Paolo, S., Bussino, E., Calloni, B. Y., Cao, R., Cardarelli, S., Catalanotti, S., Cavaliere, F., Cesaroni, P., Creti, Danzengluobu, B., D'ETTORRE PIAZZOLI, DE MITRI, Ivan, M., DE VINCENZI, T., DI GIROLAMO, G., DI SCIASCIO, Z. Y., Feng, Y., Fu, X. Y., Gao, Q. X., Geng, H. W., Guo, H. H., He, M., He, Q., Huang, M., Iacovacci, N., Iucci, H. Y., Jai, C. L., Jing, F. M., Kong, H. H., Kuang, Labaciren, B., Li, J. Y., Li, Z. Q., Liu, H., Lu, X. H., Ma, Mancarella, Giovanni, S. M., Mari, Marsella, Giovanni, Martello, Daniele, X. R., Meng, L., Milano, J., Mu, Panareo, Marco, 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. K., Yao, G. C., Yu, X. D., Yue, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, N. J., Zhang, X. Y., Zhang, Zhaxisangzhu, Zhaxiciren, Q. Q., Zhu, Baccia, The ARGO YBJ C. o. l. l. a. b. o. r. a. t. i. o. n. C., 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’Ettorrepiazzolic, 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, and Q. Q., Zhuj
Subjects: Physics, Nuclear and High Energy Physics, Resistive touchscreen, Range (particle radiation), ARGO-YBJ, Detector, Cosmic ray, STRIPS, Cosmic Ray, Atomic and Molecular Physics, and Optics, Charged particle, law.invention, Nuclear physics, law, Shower detectors, Cosmic Ray, Resistive Plate Counters, Composition Model, Extensive Air Showers, Energy (signal processing), Argo
Abstract: The ARGO-YBJ experiment is currently under construction at the Yangbajing Cosmic Ray Laboratory (4300 m a.s.l.).The detector consists of a central carpet, 74 × 78 m2, made of a single layer of Resistive Plate Counters (RPCs), and surrounded by a partially instrumented guard ring for a total instrumented area of about 6700 m2. The digital read-out, performed by means of pick-up electrodes 6.7 × 62 cm2 (strip), allows to measure the charged particle number of small size air showers. The technique of counting the number of fired strips on the ARGO carpet corresponds to operate in the 10÷500 TeV energy region where both direct and indirect measurements on the primary cosmic radiation have been performed. Many composition models have been proposed by different experiments. In this work we discuss the ability of the ARGO detector to discriminate among some models.
Published: 2004

18. Differential cross sections ofJ/ψandψ′in 800 GeV/c p-Si interactions

Author: Stanislav Tokár, Germano Bonomi, L. Turnbull, J. Lys, J. G. Sun, Michael Wayne Arenton, M. Jenkins, H. H. Bingham, P. Torre, D. E. Wagoner, Gianluca Introzzi, R. P. Smith, M. Haire, L.R. Fortney, M. Panareo, A. McManus, W. Selove, Wannian Yang, W. Kowald, H. C. Ballagh, T. Alexopoulos, Kwong Lau, C. T. Murphy, D. Judd, K. Clark, B. T. Zou, S. Conetti, V. Pogosian, S. Ramachandran, G. Corti, P. Hanlet, V. Golovatyuk, G. H. Mo, W. Kononenko, K. S. Nelson, M. Cooper, Bradley Cox, David B. Cline, P.O. Mazur, E. Gorini, C. Durandet, A. Blankman, M. He, Catherine A. Dukes, Alexander Ledovskoy, C. Wei, J. Trischuk, Z. L. Cao, P. Creti, L. Antoniazzi, A. Boden, Martin M. Block, N. J. Zhang, V. Elia, F. Grancagnolo, J. Rhoades, A. R. Erwin, T.Y. Chen, K. Hagan-Ingram, Leonard Spiegel, N. Yao, G. Liguori, S. Misawa, and C. R. Wang
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Color model, Muon, Octet, Order (ring theory), High Energy Physics::Experiment, Production (computer science), Parton, Energy (signal processing)
Abstract: We present the x{sub F} and p{sub T} differential cross sections of J/{psi} and {psi}{sup {prime}}, respectively, in the ranges {minus}0.05{lt}x{sub F}{lt}0.25 and p{sub T}{lt}3.5 GeV/c. The data samples are constituted by about 12000 J/{psi} and 200 {psi}{sup {prime}} produced in proton-silicon interactions at 800 GeV/c and decaying into opposite sign muons. The x{sub F} and p{sub T} distributions are compared with recent results from experiments E789 at the same energy and to leading order QCD predictions using the MRS D0 parametrization for the parton structure function. The measured shapes of the differential cross sections, except for the d{sigma}/dx{sub F} at small x{sub F}, agree very well with the prediction, even though their value is quite a bit larger than the prediction. We also present the cos{theta} differential cross section of the J/{psi} which indicates unpolarized production in contrast with color octet models predictions. {copyright} {ital 1997} {ital The American Physical Society}
Published: 1997

19. Performance of RPC for the ARGO-YBJ detector operated at the Yangbajing Laboratory

Author: THE ARGO YBJ COLLABORATION, G. AIELLI, R. ASSIRO, C. BACCI, B. BARTOLI, P. BERNARDINI, X. J. BI, B. BIONDO, C. BLEVE, S. BRICOLA, F. BUDANO, BUSSINO, Severino Angelo Maria, A. K. CALABRESE MELCARNE, P. CAMARRI, D. CAMPANA, Z. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, P. CELIO, N. CHENG, P. CRETI, G. CUSUMANO, B. Z. DAI, G. DALI STAITI, DANZENGLUOBU, B. DAQUINO, E. DE MARINIS, I. DE MITRI, B. DETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, X. H. DING, G. DI SCIASCIO, C. F. FENG, ZHAOYANG FENG, ZHENYONG FENG, K. FRATINI, X. F. GAO, Q. B. GOU, H. H. HE, M. HE, HAIBING HU, HONGBO HU, Q. HUANG, M. IACOVACCI, I. JAMES, H. Y. JIA, LABACIREN, H. J. LI, J. Y. LI, B. LIBERTI, G. LIGUORI, C. Q. LIU, J. LIU, H. LU, G. MANCARELLA, A. MANGANO, G. MARSELLA, D. MARTELLO, S. MASTROIANNI, X. R. MENG, J. MU, L. NICASTRO, C. C. NING, M. PANAREO, L. PERRONE, C. PINO, C. PINTO, P. PISTILLI, E. ROSSI, 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, H. WANG, YONGGANG WANG, YUNGANG WANG, C. Y. WU, H. R. WU, 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, N. J. ZHANG, P. ZHANG, X. Y. ZHANG, Y. ZHANG, ZHAXISANGZHU, X. X. ZHOL, F. R. ZHU, Q. Q. ZHU, MARI, Stefano Maria, THE ARGO YBJ, Collaboration, G., Aielli, R., Assiro, C., Bacci, B., Bartoli, P., Bernardini, X. J., Bi, B., Biondo, C., Bleve, S., Bricola, F., Budano, Bussino, Severino Angelo Maria, A. K., CALABRESE MELCARNE, P., Camarri, D., Campana, Z., Cao, R., Cardarelli, S., Catalanotti, S., Cavaliere, P., Celio, N., Cheng, P., Creti, G., Cusumano, B. Z., Dai, G., DALI STAITI, Danzengluobu, B., Daquino, E., DE MARINIS, I., DE MITRI, B., DETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, K., Fratini, X. F., Gao, Q. B., Gou, H. H., He, M., 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., Liu, J., Liu, H., Lu, G., Mancarella, A., Mangano, Mari, Stefano Maria, G., Marsella, D., Martello, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, M., Panareo, L., Perrone, C., Pino, C., Pinto, P., Pistilli, E., Rossi, 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, H., Wang, Yonggang, Wang, Yungang, Wang, C. Y., Wu, H. R., Wu, 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, N. J., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhol, F. R., Zhu, and Q. Q., Zhu
Subjects: Gamma-ray astronomy, Extensive air shower, RPCs
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.
Published: 2003

20. Search for the Flavor Changing Neutral Current DecayD0→μ+μ−in 800 GeV Proton-Silicon Interactions

Author: T. Alexopoulos, L. Antoniazzi, M. Arenton, H. C. Ballagh, H. Bingham, A. Blankman, M. Block, A. Boden, G. Bonomi, S. V. Borodin, J. Budagov, Z. L. Cao, G. Cataldi, T. Y. Chen, K. Clark, D. Cline, S. Conetti, M. Cooper, G. Corti, B. Cox, P. Creti, E. C. Dukes, C. Durandet, V. Elia, A. R. Erwin, E. Evangelista, L. Fortney, V. Golovatyuk, E. Gorini, F. Grancagnolo, K. Hagan-Ingram, M. Haire, P. Hanlet, M. He, G. Introzzi, M. Jenkins, J. Jennings, D. Judd, W. Kononenko, W. Kowald, K. Lau, T. Lawry, A. Ledovskoy, G. Liguori, J. Lys, P. O. Mazur, A. McManus, S. Misawa, G. Mo, C. T. Murphy, K. Nelson, M. Panareo, V. Pogosian, S. Ramachandran, M. Recagni, J. Rhoades, J. Segal, W. Selove, R. P. Smith, L. Spiegel, J. G. Sun, S. Tokar, P. Torre, J. Trischuk, L. Turnbull, I. Tzamouranis, D. E. Wagoner, C. R. Wang, C. Wei, W. Yang, N. Yao, N. J. Zhang, S. N. Zhang, and B. T. Zou
Subjects: Nuclear physics, Physics, Particle physics, Silicon, chemistry, Proton, Branching fraction, Flavor-changing neutral current, General Physics and Astronomy, chemistry.chemical_element, Limit (mathematics), Fermilab
Abstract: We have searched for the flavor changing neutral current decay Do + p-l+p”in the dimuon data obtained by the E771 experiment conducted at Fermilab. No evidence is found. A branching ratio of (-1.0 ‘A:,’ f 0.2) x 10v6 is obtained, corresponding to a 90% confidence level upper limit of 3.3 x 10m6. This new upper limit is about three times more sensitive than the best published limit. (Submitted to Physical Review Letters)
Published: 1996

21. Production of , ψ′ and γ in 800 GeV/c proton-silicon interactions

Author: M. Cooper, J. Lys, H. H. Bingham, David B. Cline, A. Blankman, R. P. Smith, W. Kowald, M. Jenkins, J. Jennings, K. S. Nelson, J. G. Sun, P. Torre, C. Dukes, H. C. Ballagh, L.R. Fortney, M. Panareo, T. Alexopoulos, A. P. McManus, P.O. Mazur, Michael Wayne Arenton, G. Corti, E. Evangelista, M. He, D. E. Wagoner, K. Clark, B. T. Zou, S. Ramachandran, C. R. Wang, C. T. Murphy, W. Selove, Wannian Yang, Alexander Ledovskoy, J. Segal, V. Golovatyuk, Stanislav Tokár, S. Conetti, Germano Bonomi, S.N. Zhang, J. Trischuk, V. Pogosyan, T. Lawry, P. Hanlet, Kwong Lau, E. Gorini, C. Wei, I. Tzamouranis, C. Durandet, Gianluca Introzzi, S.V. Borodin, G. H. Mo, Bradley Cox, D. Judd, V. Elia, K. Hagan-Ingram, Leonard Spiegel, M. Recagni, W. Kononenko, Z. L. Cao, G. Cataldi, M. Haire, Martin M. Block, A. R. Erwin, A. Boden, T.Y. Chen, L. Turnbull, N. Yao, N. J. Zhang, F. Grancagnolo, J. Rhoades, G. Liguori, S. Misawa, J. Budagov, P. Creti, and L. Antoniazzi
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Cross section (physics), Spectrometer, High intensity, Prime (order theory)
Abstract: We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at s =38.7 GeV . The data have been collected with the open geometry spectrometer of the E771 Experiment at the FNAL High Intensity Lab. J ψ , ψ′ and γ total cross sections as well as the ratio B(ψ′ → μμ)σ(ψ′) (B( J ψ → μμ)σ( J ψ )) have been measured. Results are compared with theoretical predictions and with results at other energies.
Published: 1996

22. Production ofχcharmonium via 300-GeV/cpion and proton interactions on a lithium target

Author: LeCompte T, M. Haire, A. Simard, Wannian Yang, Arenton M, M. Rosati, A. Marchionni, Pavlos Ioannou, Spyros Tzamarias, B. Cox, R. Tesarek, Guffey K, Christine Kourkoumelis, L. Turnbull, D. Judd, Fortney L, C. T. Murphy, Tao Chen, Dg Stairs, Leonard Spiegel, Tan Y, P.O. Mazur, Zhang X, M. He, Chao Wang, J. L. Rosen, S. Delchamps, R. A. Rameika, C.M. Jenkins, R. P. Smith, L. K. Resvanis, J. Kuzminski, A. Manousakis-Katsikakis, F. Turkot, Cao Z, G. Zioulas, C.H. Shen, Q. Shen, Antoniazzi L, Conetti S, N. Yao, N. J. Zhang, P. Pramantiotis, D. E. Wagoner, B. T. Zou, G. Voulgaris, and T. Turkington
Subjects: Physics, Particle physics, Pion, Meson, chemistry, Proton, Stereochemistry, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, chemistry.chemical_element, Lithium
Abstract: We present a measurement and comparison of the [chi][sub [ital c]1] and [chi][sub [ital c]2] production cross sections determined from interactions of 300-GeV/[ital c] [pi][sup [plus minus]] and [ital p] with a Li target. We find [chi][sub [ital c]1]/[chi][sub [ital c]2] production ratios of 0.52[sub [minus]0.27][sup +0.57] and 0.08[sub [minus]0.15][sup +0.25] from reactions induced by [pi][sup [plus minus]] and [ital p], respectively.
Published: 1994

23. Results from the ARGO-YBJ test experiment

Author: THE ARGO YBJ COLLABORATION, G. AIELLI, R. ASSIRO, C. BACCI, B. BARTOLI, P. BERNARDINI, X. J. BI, B. BIONDO, C. BLEVE, S. BRICOLA, F. BUDANO, BUSSINO, Severino Angelo Maria, A. K. CALABRESE MELCARNE, P. CAMARRI, D. CAMPANA, Z. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, P. CELIO, N. CHENG, P. CRETI, G. CUSUMANO, B. Z. DAI, G. DALI STAITI, DANZENGLUOBU, B. DAQUINO, E. DE MARINIS, I. DE MITRI, B. DETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, X. H. DING, G. DI SCIASCIO, C. F. FENG, ZHAOYANG FENG, ZHENYONG FENG, K. FRATINI, X. F. GAO, Q. B. GOU, H. H. HE, M. HE, HAIBING HU, HONGBO HU, Q. HUANG, M. IACOVACCI, I. JAMES, H. Y. JIA, LABACIREN, H. J. LI, J. Y. LI, B. LIBERTI, G. LIGUORI, C. Q. LIU, J. LIU, H. LU, G. MANCARELLA, A. MANGANO, G. MARSELLA, D. MARTELLO, S. MASTROIANNI, X. R. MENG, J. MU, L. NICASTRO, C. C. NING, M. PANAREO, L. PERRONE, C. PINO, C. PINTO, P. PISTILLI, E. ROSSI, 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, H. WANG, YONGGANG WANG, YUNGANG WANG, C. Y. WU, H. R. WU, 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, N. J. ZHANG, P. ZHANG, X. Y. ZHANG, Y. ZHANG, ZHAXISANGZHU, X. X. ZHOL, F. R. ZHU, Q. Q. ZHU, MARI, Stefano Maria, THE ARGO YBJ, Collaboration, G., Aielli, R., Assiro, C., Bacci, B., Bartoli, P., Bernardini, X. J., Bi, B., Biondo, C., Bleve, S., Bricola, F., Budano, Bussino, Severino Angelo Maria, A. K., CALABRESE MELCARNE, P., Camarri, D., Campana, Z., Cao, R., Cardarelli, S., Catalanotti, S., Cavaliere, P., Celio, N., Cheng, P., Creti, G., Cusumano, B. Z., Dai, G., DALI STAITI, Danzengluobu, B., Daquino, E., DE MARINIS, I., DE MITRI, B., DETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, K., Fratini, X. F., Gao, Q. B., Gou, H. H., He, M., 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., Liu, J., Liu, H., Lu, G., Mancarella, A., Mangano, Mari, Stefano Maria, G., Marsella, D., Martello, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, M., Panareo, L., Perrone, C., Pino, C., Pinto, P., Pistilli, E., Rossi, 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, H., Wang, Yonggang, Wang, Yungang, Wang, C. Y., Wu, H. R., Wu, 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, N. J., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhol, F. R., Zhu, and Q. Q., Zhu
Published: 2000

24. High Altitude test of RPCs for the ARGO-YBJ experiment

Author: THE ARGO YBJ COLLABORATION, G. AIELLI, R. ASSIRO, C. BACCI, B. BARTOLI, P. BERNARDINI, X. J. BI, B. BIONDO, C. BLEVE, S. BRICOLA, F. BUDANO, BUSSINO, Severino Angelo Maria, A. K. CALABRESE MELCARNE, P. CAMARRI, D. CAMPANA, Z. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, P. CELIO, N. CHENG, P. CRETI, G. CUSUMANO, B. Z. DAI, G. DALI STAITI, DANZENGLUOBU, B. DAQUINO, E. DE MARINIS, I. DE MITRI, B. DETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, X. H. DING, G. DI SCIASCIO, C. F. FENG, ZHAOYANG FENG, ZHENYONG FENG, K. FRATINI, X. F. GAO, Q. B. GOU, H. H. HE, M. HE, HAIBING HU, HONGBO HU, Q. HUANG, M. IACOVACCI, I. JAMES, H. Y. JIA, LABACIREN, H. J. LI, J. Y. LI, B. LIBERTI, G. LIGUORI, C. Q. LIU, J. LIU, H. LU, G. MANCARELLA, A. MANGANO, G. MARSELLA, D. MARTELLO, S. MASTROIANNI, X. R. MENG, J. MU, L. NICASTRO, C. C. NING, M. PANAREO, L. PERRONE, C. PINO, C. PINTO, P. PISTILLI, E. ROSSI, 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, H. WANG, YONGGANG WANG, YUNGANG WANG, C. Y. WU, H. R. WU, 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, N. J. ZHANG, P. ZHANG, X. Y. ZHANG, Y. ZHANG, ZHAXISANGZHU, X. X. ZHOL, F. R. ZHU, Q. Q. ZHU, MARI, Stefano Maria, Bacci, C., Bao, K. Z., Barone, F., Bartoli, B., Bernardini, Paolo, 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, Giovanni, Martello, Daniele, Mei, D. M., Meng, X. R., Milano, L., Morselli, A., Mu, J., Panareo, Marco, Parisi, M., Pellizzoni, G., Peng, Z. R., Pinto, C., Pistilli, P., Reali, E., Santonico, R., Severino, G., Shen, P. R., Stanescu, C., Su, J., Sun, L. R., Sun, S. C., Surdo, A., Tan, Y. H., Vernetto, S., 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., Bernardini, P., Calloni, Enrico, Cesaroni, CARLO FRANCESCO, Danzengluobu, M., D'Ettorre, Piazzoli, Benedetto, De Vincenzi, M., Girolamo, Di, DI GIROLAMO, Tristano, Di Sciascio, G., He, Chaojie, Huang, Weiping, Iacovacci, Michele, Marsella, G., Martello, D., Panareo, M., Zhaxisangzhu, Zhaxiciren, Q. Q. Zhu, THE ARGO YBJ, Collaboration, G., Aielli, R., Assiro, C., Bacci, B., Bartoli, P., Bernardini, X. J., Bi, B., Biondo, C., Bleve, S., Bricola, F., Budano, Bussino, Severino Angelo Maria, A. K., CALABRESE MELCARNE, P., Camarri, D., Campana, Z., Cao, R., Cardarelli, S., Catalanotti, S., Cavaliere, P., Celio, N., Cheng, P., Creti, G., Cusumano, B. Z., Dai, G., DALI STAITI, B., Daquino, E., DE MARINIS, I., DE MITRI, B., DETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, K., Fratini, X. F., Gao, Q. B., Gou, M., He, Haibing, Hu, Hongbo, Hu, Q., Huang, M., Iacovacci, I., Jame, H. Y., Jia, H. J., Li, B., Liberti, G., Liguori, C. Q., Liu, J., Liu, H., Lu, G., Mancarella, A., Mangano, Mari, Stefano Maria, G., Marsella, D., Martello, S., Mastroianni, X. R., Meng, J., Mu, L., Nicastro, C. C., Ning, M., Panareo, L., Perrone, C., Pino, C., Pinto, P., Pistilli, E., Rossi, 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, H., Wang, Yonggang, Wang, Yungang, Wang, C. Y., Wu, H. R., Wu, L., Xue, H. T., Yang, Q. Y., Yang, X. C., Yang, A. F., Yuan, M., Zha, H. M., Zhang, J. L., Zhang, L., Zhang, N. J., Zhang, P., Zhang, X. Y., Zhang, Y., Zhang, X. X., Zhol, F. R., Zhu, and Q. Q., Zhu
Subjects: Physics, Nuclear and High Energy Physics, ARGO-YBJ, Astronomy, Cosmic ray, Gamma-ray astronomy, Astrophysics, Extensive air-shower, Effects of high altitude on humans, Electrode impedance, gamma-ray astronomy, RPCs, High mountain, High Energy Physics - Experiment, Ionization chamber, Instrumentation, Argo
Abstract: A 50 m**2 RPC carpet was operated at the YangBaJing Cosmic Ray Laboratory (Tibet) located 4300 m a.s.l. The performance of RPCs in detecting Extensive Air Showers was studied. Efficiency and time resolution measurements at the pressure and temperature conditions typical of high mountain laboratories, are reported., Comment: 16 pages, 10 figures, submitted to Nucl. Instr. Meth
Published: 2000

25. Results from the analysis of data collected with a 50m(2) RPC carpet at YangBaJing

Author: THE ARGO YBJ COLLABORATION, G. AIELLI, R. ASSIRO, C. BACCI, B. BARTOLI, P. BERNARDINI, X. J. BI, B. BIONDO, C. BLEVE, S. BRICOLA, F. BUDANO, BUSSINO, Severino Angelo Maria, A. K. CALABRESE MELCARNE, P. CAMARRI, D. CAMPANA, Z. CAO, R. CARDARELLI, S. CATALANOTTI, S. CAVALIERE, P. CELIO, N. CHENG, P. CRETI, G. CUSUMANO, B. Z. DAI, G. DALI STAITI, DANZENGLUOBU, B. DAQUINO, E. DE MARINIS, I. DE MITRI, B. DETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, X. H. DING, G. DI SCIASCIO, C. F. FENG, ZHAOYANG FENG, ZHENYONG FENG, K. FRATINI, X. F. GAO, Q. B. GOU, H. H. HE, M. HE, HAIBING HU, HONGBO HU, Q. HUANG, M. IACOVACCI, I. JAMES, H. Y. JIA, LABACIREN, H. J. LI, J. Y. LI, B. LIBERTI, G. LIGUORI, C. Q. LIU, J. LIU, H. LU, G. MANCARELLA, A. MANGANO, G. MARSELLA, D. MARTELLO, S. MASTROIANNI, X. R. MENG, J. MU, L. NICASTRO, C. C. NING, M. PANAREO, L. PERRONE, C. PINO, C. PINTO, P. PISTILLI, E. ROSSI, 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, H. WANG, YONGGANG WANG, YUNGANG WANG, C. Y. WU, H. R. WU, 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, N. J. ZHANG, P. ZHANG, X. Y. ZHANG, Y. ZHANG, ZHAXISANGZHU, X. X. ZHOL, F. R. ZHU, Q. Q. ZHU, MARI, Stefano Maria, Bacci, C., Bao, K. Z., Barone, F., Bartoli, B., Bernardini, P., Bussino, S., Calloni, E., Cao, B. Y., Cardarelli, R., Catalanotti, S., Cavaliere, A., Cavaliere, S., 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, Giovanni, Martello, Daniele, Mei, D. M., Meng, X. R., Milano, L., Mu, J., Panareo, Marco, Pellizzoni, G., Peng, Z. R., Pinto, C., Pistilli, P., Reali, E., Santonico, R., Sbarra, C., Shen, P. R., Stanescu, C., Su, J., Sun, L. R., Sun, S. C., Surdo, A., Tan, Y. H., Vernetto, S., 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., C., Bacci, K. Z., Bao, F., Barone, Bartoli, Bruno, P., Bernardini, S., Bussino, Calloni, Enrico, B. Y., Cao, R., Cardarelli, Catalanotti, Sergio, A., Cavaliere, 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, M., He, Q., Huang, Iacovacci, Michele, N., Iucci, H. Y., Jai, F. M., Kong, H. H., Kuang, B., Li, Z. Q., Liu, H., Lu, G., Mancarella, S. M., Mari, G., Marsella, D., Martello, D. M., Mei, X. R., Meng, L., Milano, J., Mu, M., Panareo, C., Pellizzoni, Z. R., Peng, C., Pinto, P., Pistilli, E., Reali, R., Santonico, C., Sbarra, P. R., Shen, C., Stanescu, J., Su, 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. K., Yao, X. D., Yue, A. F., Yuan, H. M., Zhang, J. L., Zhang, N. J., Zhang, T. J., Zhang, X. Y., Zhang, Q. Q., Zhu, Piazzoli, B. D., Vincenzi, M. D., Girolamo, T. D., Sciascio, G. D., Mancarella, Giovanni, Pellizzoni, C., THE ARGO YBJ, Collaboration, G., Aielli, R., Assiro, B., Bartoli, X. J., Bi, B., Biondo, C., Bleve, S., Bricola, F., Budano, Bussino, Severino Angelo Maria, A. K., CALABRESE MELCARNE, P., Camarri, D., Campana, Z., Cao, S., Catalanotti, P., Celio, N., Cheng, G., Cusumano, B. Z., Dai, G., DALI STAITI, B., Daquino, E., DE MARINIS, I., DE MITRI, B., DETTORRE PIAZZOLI, M., DE VINCENZI, T., DI GIROLAMO, X. H., Ding, G., DI SCIASCIO, C. F., Feng, Zhaoyang, Feng, Zhenyong, Feng, K., Fratini, X. F., Gao, Q. B., Gou, Haibing, Hu, Hongbo, Hu, M., Iacovacci, I., Jame, H. Y., Jia, H. J., Li, B., Liberti, G., Liguori, C. Q., Liu, J., Liu, A., Mangano, Mari, Stefano Maria, S., Mastroianni, L., Nicastro, C. C., Ning, L., Perrone, C., Pino, E., Rossi, L., Saggese, P., Salvini, X. D., Sheng, F., Shi, P., Vallania, Yonggang, Wang, Yungang, Wang, C. Y., Wu, H. R., Wu, L., Xue, Q. Y., Yang, X. C., Yang, M., Zha, L., Zhang, P., Zhang, Y., Zhang, Zhaxisangzhu, X. X., Zhol, F. R., Zhu, Bacci, C, Bao, Kz, Barone, F, Bartoli, B, Bernardini, P, Calloni, E, Cao, By, Cardarelli, R, Catalanotti, S, Cavaliere, A, Cavaliere, S, Cesaroni, F, Creti, P, 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, Kong, Fm, Kuang, Hh, Li, B, Li, Jy, Liu, Zq, Lu, H, Ma, Xh, Mancarella, G, Marsella, G, Martello, D, Mei, Dm, Meng, Xr, Milano, L, Mu, J, Panareo, M, Pellizzoni, C, Peng, Zr, Pinto, C, Pistilli, P, Reali, E, Santonico, R, Sbarra, C, Shen, Pr, Stanescu, C, Su, J, 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, Zhang, Hm, Zhang, Jl, Zhang, Nj, Zhang, Tj, Zhang, Xy, and Zhu, Qq
Subjects: Physics, gamma ray detector, Nuclear and High Energy Physics, Shower, Air shower, Altitude, Meteorology, Data analysis, Gamma Ray Bursts, Effects of high altitude on humans, Instrumentation
Abstract: An RPC carpet covering similar to 10(4) m(2) (ARGO-YBJ experiment) will be installed in the YangBaJing Laboratory (Tibet, People's Republic of China) at an altitude of 4300 m a.s.l. A test-module of similar to 50 m(2) has been put in operation in this laboratory and about 10(6) air shower events have been collected. The RPC performance at high altitude and the carpet capability of reconstructing the shower features are presented. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

26. The experiment 705 electromagnetic shower calorimeter

Author: Z. Cao, M. Arenton, L. Turnbull, Zhang X, S. Delchamps, C. T. Murphy, Tan Y, N. Yao, C. Kourkoumelis, A. Manousakis-Katsikakis, J. Kuzminski, D. Judd, Leonard Spiegel, L. Antoniazzi, F. Turkot, G. Voulgaris, T. Turkington, R. P. Smith, M. He, B. T. Zou, C.H. Shen, R. Tesarek, S. Tzamarias, G. Zioulas, N. J. Zhang, R. A. Rameika, David Wagoner, Peter Mazur, T.Y. Chen, A. Simard, K. Guffey, P. Pramantiotis, Q. Shen, L. Fortney, C. M. Jenkins, A. Marchionni, J. Weckel, J. Rosen, D. G. Stairs, B. Cox, P. Ioannou, Chao Wang, S. Conetti, LeCompte T, M. Haire, Wannian Yang, M. Rosati, and L. K. Resvanis
Subjects: Physics, Nuclear and High Energy Physics, Photon, Meson, Physics::Instrumentation and Detectors, Hadron, Electron, Particle detector, Calorimeter, Nuclear physics, Pion, High Energy Physics::Experiment, Nuclear Experiment, Instrumentation, Fermi Gamma-ray Space Telescope
Abstract: Experiment 705 at Fermi National Accelerator Laboratory has designed, built, and operated a large acceptance, highly segmented electromagnetic shower calorimeter using SF5 lead glass, SCG1-C scintillating glass, and two types of gas-based fine-grained hodoscopes. The calorimeter was used to reconstruct photons and electrons with energies ranging from a few GeV/ c 2 to over 100 GeV/ c 2 in 300 GeV/ c pion and proton interactions on a lithium target at instantaneous interaction rates approaching several MHz. Construction details of the calorimeter are given. The readout electronics, calibration, and algorithms used to reconstruct the positions and energies of showering particles are discussed. Energy resolution, position resolution, and reconstruction efficiency are assessed using both calibration electron beams and electrons and π 0 mesons reconstructed in 300 GeV/ c interactions.
Published: 1993

27. Production ofJ/ψ via ψ’ and χ decay in 300 GeV/cproton- andπ±-nucleon interactions

Author: M. Haire, Chao Wang, S. Delchamps, C. T. Murphy, M. Rosati, Conetti S, B. T. Zou, W. Yang, Cao Z, Fortney L, N. Yao, G. Zioulas, B. Cox, Christine Kourkoumelis, Guffey K, R. A. Rameika, F. Turkot, M. He, Xiang Zhang, Leonard Spiegel, D. E. Wagoner, R. P. Smith, G. Voulgaris, T. Turkington, R. Tesarek, Tan Y, P. Pramantiotis, A. Marchionni, P.O. Mazur, Tao Chen, A. Simard, Antoniazzi L, C.M. Jenkins, S. Tzamarias, D. Judd, Arenton M, A. Manousakis-Katsikakis, J. L. Rosen, L. K. Resvanis, Pavlos Ioannou, J. Kuzminski, C.H. Shen, N. J. Zhang, D. G. Stairs, L. Turnbull, Q. Shen, and LeCompte T
Subjects: Physics, Crystallography, Muon, Proton, Meson, Hadron, Radiative decay, General Physics and Astronomy, Nucleon, Quarkonium, J/psi meson
Abstract: The production of the [chi][sub 1] and [chi][sub 2] states of charmonium has been observed in 300 GeV/[ital c] [pi][sup [plus minus]][ital N] and [ital pN] interactions. The fraction of the total inclusive [ital J]/[psi] production due to radiative [chi] decay has been determined to be 0.40[plus minus]0.04, 0.37[plus minus]0.03, and 0.30[plus minus]0.04 for the [pi][sup +], [pi][sup [minus]], and proton data, respectively. Total cross sections have been obtained of 131[plus minus]18[plus minus]14 and 188[plus minus]30[plus minus]21 nb/nucleon in the 300 GeV/[ital c] [pi][sup [minus]][ital N] interactions for [chi][sub 1] and [chi][sub 2] production. By measuring the contributions to the [ital J]/[psi] production due to both [psi][prime] and radiative [chi] decay, the cross sections for direct [ital J]/[psi] production have been determined to be 97[plus minus]14, 102[plus minus]14, and 89[plus minus]12 nb/nucleon for [pi][sup +], [pi][sup [minus]], and protons, respectively.
Published: 1993

28. Measurement of the bb(bar) Cross Section in 800 GeV/c Proton-Silicon Interactions

Author: T. ALEXOPOULOS, L. ANTONIAZZI, M. ARENTON, H. C. BALLAGH, H. BINGHAM, A. BLANKMAN, M. BLOCK, A. BODEN, G. BONOMI, Z. L. CAO, T. Y. CHEN, K. CLARK, D. CLINE, S. CONETTI, M. COOPER, G. CORTI, B. COX, P. CRETI, C. DUKES, C. DURANDET, A. R. ERWIN, L. FORTNEY, V. GOLOVATYUK, F. GRANCAGNOLO, K. HAGAN INGRAM, M. HAIRE, P. HANLET, M. HE, G. INTROZZI, M. JENKINS, D. JUDD, W. KONONENKO, W. KOWALD, K. LAU, A. LEDOVSKOY, G. LIGUORI, J. LYS, P. O. MAZUR, A. MCMANUS, S. MISAWA, G. H. MO, C. T. MURPHY, K. NELSON, V. POGOSIAN, S. RAMACHANDRAN, J. RHOADES, W. SELOVE, R. P. SMITH, L. SPIEGEL, J. G. SUN, S. TOKAR, P. TORRE, J. TRISCHUK, L. TURNBULL, D. E. WAGONER, C. R. WANG, C. WEI, W. YANG, N. YAO, N. J. ZHANG, B. T. ZOU, ELIA, Valerio, GORINI, Edoardo, PANAREO, Marco, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, Z. L., Cao, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, Elia, Valerio, A. R., Erwin, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., HAGAN INGRAM, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, D., Judd, W., Kononenko, W., Kowald, K., Lau, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A., Mcmanu, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosian, S., Ramachandran, J., Rhoade, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, and B. T., Zou
Abstract: The cross section for bb̅ production in 800GeV/c pN interactions has been measured in Fermilab experiment E771 to be 43-17+27(stat)-7+7(syst)nb per nucleon from the observation of events in which both the b and the b̅ decay semimuonically or a B decays into a J/ψ followed by J/ψ→μ+μ-.
Published: 1999

29. Measurement ofJψandψ′production in 300-GeV/cproton, antiproton, andπ±interactions with nuclei

Author: R. Tesarek, F. Turkot, Cao Z, Guffey K, Tao Chen, G. Zioulas, Q. Shen, Antoniazzi L, Chao Wang, M. Rosati, Fortney L, LeCompte T, M. Haire, A. Marchionni, M. He, D. Judd, A. Manousakis-Katsikakis, Pavlos Ioannou, D. E. Wagoner, R. P. Smith, B. T. Zou, C.M. Jenkins, Wannian Yang, Tan Y, C. T. Murphy, B. Cox, P.O. Mazur, Christine Kourkoumelis, A. Simard, J. Kuzminski, S. Delchamps, Spyros Tzamarias, P. Pramantiotis, Conetti S, Arenton M, C.H. Shen, N. Yao, G. Voulgaris, T. Turkington, Dg Stairs, J. L. Rosen, L. K. Resvanis, N. J. Zhang, L. Turnbull, Zhang X, R. A. Rameika, and Leonard Spiegel
Subjects: Physics, Antiparticle, Proton, Meson, Computer Science::Information Retrieval, Hadron, Crystallography, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, Antiproton, Antimatter, Physics::Accelerator Physics, High Energy Physics::Experiment, Production (computer science), Atomic physics, Nuclear Experiment, Nucleon
Abstract: Hadroproduction of the {ital J}/{psi} and {psi}{prime} states has been studied in 300-GeV/{ital c} proton, antiproton, and {pi}{sup {plus minus}}Li interactions. Both total and differential cross sections in {ital x}{sub {ital F}} and {ital p}{sub {ital T}} have been measured for the {ital J}/{psi} for the {pi}{sup {plus minus}}, proton, and antiproton interactions. The ratio of {psi}{prime} to {ital J}/{psi} production has been determined for the four types of beam particles.
Published: 1992

30. B physics at FNAL E771

Author: C. Wei, B. Zou, W. Selove, N. Yao, Edoardo Gorini, A. Boden, F. Grancagnolo, A. P. McManus, Kwong Lau, N. J. Zhang, Wannian Yang, J. Rhoades, A. R. Erwin, D. Wagoner, H.C. Wang, L. Turnbull, Z.L. Cao, S. Golovatyuk, A. Lanza, E. C. Dukes, T. Kaeding, M. Haire, K. S. Nelson, G. Liguori, Michael Wayne Arenton, S. Ramachandran, J. Lys, E. Tsyganov, D. Judd, H. H. Bingham, P. Hanlet, M. Newcomer, C. R. Wang, J. Budagov, S. Misawa, P.O. Mazur, T. Murphy, J. G. Sun, J. Trischuk, T. Trojak, L.R. Fortney, G. Corti, M. He, W. Kononenko, Gianluca Introzzi, S.V. Borodin, G. Cataldi, S. Tokar, S.N. Zhang, M. Panareo, T. Alexopoulos, C. Durandet, A. Blankman, V. Elia, M. Jenkins, P. Torre, Leonard Spiegel, J. Jennings, M. Recagni, P. Creti, M. Cooper, R. P. Smith, L. Antoniazzi, G. H. Mo, David B. Cline, Bradley Cox, R. Vanberg, S. Conetti, Martin M. Block, J. Segal, T.Y. Chen, C. Ballagh, W. Kowald, K. Clark, T., Alexopoulo, L., Antoniazzi, M., Arenton, C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, S., Borodin, Budagov, Y. U., Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, E., Duke, C., Durandet, Elia, Valerio, A., Erwin, L., Fortney, S., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, T., Kaeding, W., Kononenko, W., Kowald, A., Lanza, K., Lau, G., Liguori, J., Ly, P., Mazur, A., Mcmanu, S., Misawa, G., Mo, T., Murphy, K., Nelson, M., Newcomer, Panareo, Marco, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R., Smith, L., Spiegel, J., Sun, S., Tokar, P., Torre, J., Trischuk, T., Trojak, E., Tsyganov, L., Turnbull, R., VAN BERG, D., Wagoner, C., Wang, H. C., Wang, C., Wei, W., Yang, N., Yao, N., Zhang, S. N., Zhang, and B., Zou
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Spectrometer, High Energy Physics::Experiment, Fermilab, Atomic and Molecular Physics, and Optics, Particle identification
Abstract: The short-term prospects for Fermilab experiment E771 - devoted to the hadroproduction of beauty - are described as well as the major characteristics of the spectrometer. Expectations for detection and reconstruction of exclusive B decay channels are discussed.
Published: 1992

31. An Updated Search of Steady TeV $\gamma-$Ray Point Sources in Northern Hemisphere Using the Tibet Air Shower Array

Author: Z. H. Ye, X. Y. Zhang, Y. Wang, H. Y. Jia, J. R. Ren, X. C. Yang, Ji-Long Zhang, Y. G. Wang, X. R. Meng, Han-Rong Wu, Haibing Hu, S. W. Cui, L. K. Ding, Hui-Min Zhang, C. Fan, Hui Wang, Hong-Bo Hu, H. W. Guo, X. J. Bi, Xiao-Hong Ding, You-Heng Tan, X. X. Zhou, Zhaoyang Feng, Ang Li, Yi Zhang, M. He, Q Huang, Jy Li, S. L. Lu, Yong Zhang, Zhaxisangzhu, C. F. Feng, Z. Y. Feng, L. Xue, B. Wang, GC Yu, Y. Q. Lou, Q. Yuan, N. J. Zhang, Gui-Ming Le, A. F. Yuan, H. Lu, Q. X. Geng, Danzengluobu, Labaciren, X. Y. Gao, Huihai He, and J. Mu
Subjects: Physics, Nuclear and High Energy Physics, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Northern Hemisphere, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Flux, Astronomy and Astrophysics, Astrophysics, Declination, Power law, Air shower, Crab Nebula, Sky, Instrumentation, media_common
Abstract: Using the data taken from Tibet II High Density (HD) Array (1997 February-1999 September) and Tibet-III array (1999 November-2005 November), our previous northern sky survey for TeV $\gamma-$ray point sources has now been updated by a factor of 2.8 improved statistics. From $0.0^{\circ}$ to $60.0^{\circ}$ in declination (Dec) range, no new TeV $\gamma-$ray point sources with sufficiently high significance were identified while the well-known Crab Nebula and Mrk421 remain to be the brightest TeV $\gamma-$ray sources within the field of view of the Tibet air shower array. Based on the currently available data and at the 90% confidence level (C.L.), the flux upper limits for different power law index assumption are re-derived, which are approximately improved by 1.7 times as compared with our previous reported limits., Comment: This paper has been accepted by hepnp
Published: 2008

32. Differential cross sections of J/psi and psi' in 800 GeV/c p-Si interactions

Author: T. Alexopoulos, L. Antoniazzi, M. Arenton, H. C. Ballagh, H. Bingham, A. Blankman, M. Block, A. Boden, G. Bonomi, Z. L. Cao, T. Y. Chen, K. Clark, D. Cline, S. Conetti, M. Cooper, G. Corti, B. Cox, P. Creti, C. Dukes, C. Durandet, V. Elia, A. R. Erwin, L. Fortney, V. Golovatyuk, F. Grancagnolo, K. HaganIngram, M. Haire, P. Hanlet, M. He, G. Introzzi, M. Jenkins, D. Judd, W. Kononenko, W. Kowald, K. Lau, A. Ledovskoy, G. Liguori, J. Lys, P. O. Mazur, A. McManus, S. Misawa, G. H. Mo, C. T. Murphy, K. Nelson, PANAREO, Marco, V. Pogosian, S. Ramachandran, J. Rhoades, W. Selove, R. P. Smith, L. Spiegel, J. G. Sun, S. Tokar, P. Torre, J. Trischuk, L. Turnbull, D. E. Wagoner, C. R. Wang, C. Wei, W. Yang, N. Yao, N. J. Zhang, B. T. Zou, GORINI, Edoardo, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, Z. L., Cao, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, V., Elia, A. R., Erwin, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., Haganingram, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, D., Judd, W., Kononenko, W., Kowald, K., Lau, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A., Mcmanu, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosian, S., Ramachandran, J., Rhoade, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, and B. T., Zou
Published: 1997

33. Underground water Cherenkov muon detector array with the Tibet air shower array for gamma-ray astronomy in the 100 TeV region

Author: M. Amenomori, S. Ayabe, X. J. Bi, D. Chen, S. W. Cui, null Danzengluobu, L. K. Ding, X. H. Ding, C. F. Feng, Zhaoyang Feng, Z. Y. Feng, X. Y. Gao, Q. X. Geng, H. W. Guo, H. H. He, M. He, K. Hibino, N. Hotta, Haibing Hu, H. B. Hu, J. Huang, Q. Huang, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, C. Kato, K. Kawata, null Labaciren, G. M. Le, A. F. Li, J. Y. Li, H. Lu, S. L. Lu, X. R. Meng, K. Mizutani, J. Mu, K. Munakata, A. Nagai, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, H. Onuma, T. Ouchi, S. Ozawa, J. R. Ren, T. Saito, T. Y. Saito, M. Sakata, T. K. Sako, T. Sasaki, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, M. Takita, Y. H. Tan, N. Tateyama, S. Torii, H. Tsuchiya, S. Udo, B. Wang, H. Wang, X. Wang, Y. G. Wang, H. R. Wu, L. Xue, Y. Yamamoto, C. T. Yan, X. C. Yang, S. Yasue, Z. H. Ye, G. C. Yu, A. F. Yuan, T. Yuda, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, Y. Zhang, Yi Zhang, null Zhaxisangzhu, and X. X. Zhou
Published: 2007

34. Production of J/psi, psi' and Upsilon in 800 GeV/c proton-silicon interactions

Author: T. Alexopoulos, L. Antoniazzi, M. Arenton, H. C. Ballagh, H. Bingham, A. Blankman, M. Block, A. Boden, G. Bonomi, S. V. Borodin, J. Budagov, Z. L. Cao, G. Cataldi, T. Y. Chen, K. Clark, D. Cline, S. Conetti, M. Cooper, G. Corti, B. Cox, P. Creti, C. Dukes, C. Durandet, A. R. Erwin, E. Evangelista, L. Fortney, V. Golovatyuk, F. Grancagnolo, K. HaganIngram, M. Haire, P. Hanlet, M. He, G. Introzzi, M. Jenkins, J. Jennings, D. Judd, W. Kononenko, W. Kowald, K. Lau, T. Lawry, A. Ledovskoy, G. Liguori, J. Lys, P. O. Mazur, A. P. McManus, S. Misawa, G. H. Mo, C. T. Murphy, K. Nelson, V. Pogosyan, S. Ramachandran, M. Recagni, J. Rhoades, J. Segal, W. Selove, R. P. Smith, L. Spiegel, J. G. Sun, S. Tokar, P. Torre, J. Trischuk, L. Turnbull, I. Tzamouranis, D. E. Wagoner, C. R. Wang, C. Wei, W. Yang, N. Yao, N. J. Zhang, S. N. Zhang, B. T. Zou, ELIA, Valerio, GORINI, Edoardo, PANAREO, Marco, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, S. V., Borodin, J., Budagov, Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, Elia, Valerio, A. R., Erwin, E., Evangelista, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., Haganingram, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, W., Kononenko, W., Kowald, K., Lau, T., Lawry, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A. P., Mcmanu, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosyan, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, I., Tzamourani, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, S. N., Zhang, and B. T., Zou
Published: 1996

35. Search for the flavor changing neutral current decay D-0->mu(+)mu(-) in 800 GeV proton-silicon interactions

Author: T. Alexopoulos, L. Antoniazzi, M. Arenton, H. C. Ballagh, H. Bingham, A. Blankman, M. Block, A. Boden, G. Bonomi, S. V. Borodin, J. Budagov, Z. L. Cao, G. Cataldi, T. Y. Chen, K. Clark, D. Cline, S. Conetti, M. Cooper, G. Corti, B. Cox, P. Creti, E. C. Dukes, C. Durandet, A. R. Erwin, E. Evangelista, L. Fortney, V. Golovatyuk, F. Grancagnolo, K. HaganIngram, M. Haire, P. Hanlet, M. He, G. Introzzi, M. Jenkins, J. Jennings, D. Judd, W. Kononenko, W. Kowald, K. Lau, T. Lawry, A. Ledovskoy, G. Liguori, J. Lys, P. O. Mazur, A. McManus, S. Misawa, G. Mo, C. T. Murphy, K. Nelson, V. Pogosian, S. Ramachandran, M. Recagni, J. Rhoades, J. Segal, W. Selove, R. P. Smith, L. Spiegel, J. G. Sun, S. Tokar, P. Torre, J. Trischuk, L. Turnbull, I. Tzamouranis, D. E. Wagoner, C. R. Wang, C. Wei, W. Yang, N. Yao, N. J. Zhang, S. N. Zhang, B. T. Zou, ELIA, Valerio, GORINI, Edoardo, PANAREO, Marco, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, S. V., Borodin, J., Budagov, Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, E. C., Duke, C., Durandet, Elia, Valerio, A. R., Erwin, E., Evangelista, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., Haganingram, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, W., Kononenko, W., Kowald, K., Lau, T., Lawry, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A., Mcmanu, S., Misawa, G., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosian, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, I., Tzamourani, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, S. N., Zhang, and B. T., Zou
Subjects: PHYSICS, LUND MONTE-CARLO, UPPER LIMIT, D-MESON PRODUCTION
Abstract: We have searched for the flavor changing neutral current decay D-0 --> mu(+)mu(-) in the dimuon data obtained by the E771 experiment conducted at Fermilab. No evidence is found. A 90% confidence level upper limit of 4.2 x 10(-6) is obtained for the branching ratio. This new upper limit is about two times lower than the best published result.
Published: 1996

36. Underground Water Cherenkov Muon Detector Array with the Tibet Air Shower Array for Gamma-Ray Astronomy in the 100 TeV Region

Author: M. Amenomori, S. Ayabe, X. J. Bi, D. Chen, S. W. Cui, null Danzengluobu, L. K. Ding, X. H. Ding, C. F. Feng, Zhaoyang Feng, Z. Y. Feng, X. Y. Gao, Q. X. Geng, H. W. Guo, H. H. He, M. He, K. Hibino, N. Hotta, Haibing Hu, H. B. Hu, J. Huang, Q. Huang, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, C. Kato, K. Kawata, null Labaciren, G. M. Le, A. F. Li, J. Y. Li, H. Lu, S. L. Lu, X. R. Meng, K. Mizutani, J. Mu, K. Munakata, A. Nagai, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, H. Onuma, T. Ouchi, S. Ozawa, J. R. Ren, T. Saito, T. Y. Saito, M. Sakata, T. K. Sako, T. Sasaki, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, M. Takita, Y. H. Tan, N. Tateyama, S. Torii, H. Tsuchiya, S. Udo, B. Wang, H. Wang, X. Wang, Y. G. Wang, H. R. Wu, L. Xue, Y. Yamamoto, C. T. Yan, X. C. Yang, S. Yasue, Z. H. Ye, G. C. Yu, A. F. Yuan, T. Yuda, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, Y. Zhang, Yi Zhang, null Zhaxisangzhu, and X. X. Zhou
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Detector, Antenna aperture, Astrophysics (astro-ph), Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Gamma-ray astronomy, Physics::Geophysics, Nuclear physics, Air shower, Space and Planetary Science, High Energy Physics::Experiment, Cherenkov radiation
Abstract: We propose to build a large water-Cherenkov-type muon-detector array (Tibet MD array) around the 37,000 m$^{2}$ Tibet air shower array (Tibet AS array) already constructed at 4,300 m above sea level in Tibet, China. Each muon detector is a waterproof concrete pool, 6 m wide $\times$ 6 m long $\times$ 1.5 m deep in size, equipped with a 20 inch-in-diameter PMT. The Tibet MD array consists of 240 muon detectors set up 2.5 m underground. Its total effective area will be 8,640 m$^{2}$ for muon detection. The Tibet MD array will significantly improve gamma-ray sensitivity of the Tibet AS array in the 100 TeV region (10-1000 TeV) by means of gamma/hadron separation based on counting the number of muons accompanying an air shower. The Tibet AS+MD array will have the sensitivity to gamma rays in the 100 TeV region by an order of magnitude better than any other previous existing detectors in the world., 4 pages, 4 figures, Accepted for publication in Astrophysics and Space Science, proceeding of "The Multi-Messenger Approach to High-Energy Gamma-Ray Sources", Barcelona, July 4-7, 2006
Published: 2006

37. A search for a new charmonium states decaying into J/psi plus charged pions

Author: T. ALEXOPOULOS, L. ANTONIAZZI, M. ARENTON, H. C. BALLAGH, H. BINGHAM, A. BLANKMAN, M. BLOCK, A. BODEN, G. BONOMI, S. V. BORODIN, Y.U. BUDAGOV, Z. L. CAO, G. CATALDI, T. Y. CHEN, K. CLARK, D. CLINE, S. CONETTI, M. COOPER, G. CORTI, B. COX, P. CRETI, C. DUKES, C. DURANDET, V. ELIA, A. R. ERWIN, E. EVANGELISTA, L. FORTNEY, V. GOLOVATYUK, GORINI, Edoardo, F. GRANCAGNOLO, K. HAGAN INGRAM, M. HAIRE, P. HANLET, M. HE, G. INTROZZI, M. JENKINS, J. JENNINGS, D. JUDD, W. KONONENKO, W. KOWALD, K. LAU, T. LAWRY, A. LEDOVSKOY, G. LIGUORI, J. LYS, A. MCMANUS, P. O. MAZUR, S. MISAWA, G. H. MO, C. T. MURPHY, K. NELSON, V. POGOSIAN, S. RAMACHANDRAN, M. RECAGNI, J. RHOADES, J. SEGAL, W. SELOVE, R. P. SMITH, L. SPIEGEL, J. G. SUN, S. TOKAR, P. TORRE, J. TRISCHUK, L. TURNBULL, I. TZAMOURANIS, D. E. WAGONER, C. R. WANG, C. WEI, W. YANG, N. YAO, N. J. ZHANG, S. N. ZHANG, B. T. ZOU, PANAREO, Marco, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, S. V., Borodin, Budagov, Y. U., Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, V., Elia, A. R., Erwin, E., Evangelista, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., HAGAN INGRAM, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, W., Kononenko, W., Kowald, K., Lau, T., Lawry, A., Ledovskoy, G., Liguori, J., Ly, A., Mcmanu, P. O., Mazur, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosian, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, I., Tzamourani, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, S. N., Zhang, and B. T., Zou
Published: 1994

38. High mass dimuon states produced in 800 GeV/c pSi interactions

Author: T. ALEXOPOULOS, L. ANTONIAZZI, M. ARENTON, H. C. BALLAGH, H. BINGHAM, A. BLANKMAN, M. BLOCK, A. BODEN, G. BONOMI, S. V. BORODIN, Y.U. BUDAGOV, Z. L. CAO, G. CATALDI, T. Y. CHEN, K. CLARK, D. CLINE, S. CONETTI, M. COOPER, G. CORTI, B. COX, P. CRETI, C. DUKES, C. DURANDET, A. R. ERWIN, E. EVANGELISTA, L. FORTNEY, V. GOLOVATYUK, F. GRANCAGNOLO, K. HAGAN INGRAM, M. HAIRE, P. HANLET, M. HE, G. INTROZZI, M. JENKINS, J. JENNINGS, D. JUDD, W. KONONENKO, W. KOWALD, K. LAU, T. LAWRY, A. LEDOVSKOY, G. LIGUORI, J. LYS, P. O. MAZUR, A. MCMANUS, S. MISAWA, G. H. MO, C. T. MURPHY, K. NELSON, V. POGOSIAN, S. RAMACHANDRAN, M. RECAGNI, J. RHOADES, J. SEGAL, W. SELOVE, R. P. SMITH, L. SPIEGEL, J. G. SUN, S. TOKAR, P. TORRE, J. TRISCHUK, L. TURNBULL, I. TZAMOURANIS, D. E. WAGONER, C. R. WANG, C. WEI, W. YANG, N. YAO, N. J. ZHANG, S. N. ZHANG, B. T. ZOU, ELIA, Valerio, GORINI, Edoardo, PANAREO, Marco, Sally Seidel, T., Alexopoulo, L., Antoniazzi, M., Arenton, H. C., Ballagh, H., Bingham, A., Blankman, M., Block, A., Boden, G., Bonomi, S. V., Borodin, Budagov, Y. U., Z. L., Cao, G., Cataldi, T. Y., Chen, K., Clark, D., Cline, S., Conetti, M., Cooper, G., Corti, B., Cox, P., Creti, C., Duke, C., Durandet, Elia, Valerio, A. R., Erwin, E., Evangelista, L., Fortney, V., Golovatyuk, Gorini, Edoardo, F., Grancagnolo, K., HAGAN INGRAM, M., Haire, P., Hanlet, M., He, G., Introzzi, M., Jenkin, J., Jenning, D., Judd, W., Kononenko, W., Kowald, K., Lau, T., Lawry, A., Ledovskoy, G., Liguori, J., Ly, P. O., Mazur, A., Mcmanu, S., Misawa, G. H., Mo, C. T., Murphy, K., Nelson, Panareo, Marco, V., Pogosian, S., Ramachandran, M., Recagni, J., Rhoade, J., Segal, W., Selove, R. P., Smith, L., Spiegel, J. G., Sun, S., Tokar, P., Torre, J., Trischuk, L., Turnbull, I., Tzamourani, D. E., Wagoner, C. R., Wang, C., Wei, W., Yang, N., Yao, N. J., Zhang, S. N., Zhang, and B. T., Zou
Subjects: branching ratio [channel cross section], leptonic decay [psi mesons], hadroproduction [psi(3685)], silicon, x-dependence [differential cross section], dimuon [mass spectrum], hadroproduction [Upsilon(9460)], experimental result [magnetic spectrometer], Albuquerque 1994/08/02, hadroproduction [J/psi(3100)], dependence [transverse momentum], pair production [muon], inclusive reaction [p nucleus], Batavia TEVATRON PS
Published: 1994

39. Observation by an Air-Shower Array in Tibet of the Multi-TeV Cosmic-Ray Anisotropy due to Terrestrial Orbital Motion Around the Sun

Author: M. Ohnishi, M. Sakata, Danzengluobu, Kazuoki Munakata, A. F. Yuan, Cunfeng Feng, Z. H. Ye, Xuan Zhang, I. Ohta, Y. Katayose, N. Tateyama, Harufumi Tsuchiya, L. Xue, Jieru Ren, Katsuaki Kasahara, Y. E. Tan, T. Yuda, X. C. Yang, H. Nanjo, K. Hibino, N. Hotta, H. R. Wu, C. T. Yan, H. W. Guo, T. Shirai, H. M. Zhang, X. X. Zhou, Yu Wang, H. B. Hu, H. Sugimoto, Hsiao-Chi Lu, X. Y. Gao, Takeshi Saito, X. H. Ding, K. Mizutani, G. C. Yu, B. S. Wang, Zhaxisangzhu, M. Amenomori, Haibing Hu, Kazumasa Kawata, Shunsuke Ozawa, M. Shibata, Y. Zhang, A. Shiomi, J. Mu, H. Y. Jia, S. W. Cui, Jing Huang, S. Yasue, Masato Takita, S. Udo, S. Mori, Masaki Nishizawa, Q. Huang, G. M. Le, T. Ouchi, J. Y. Li, Shoji Torii, Y. Yamamoto, N. J. Zhang, L. K. Ding, T. Utsugi, Jia Zhang, H. Onuma, T. Sasaki, H. H. He, S. L. Lu, Chihiro Kato, M. He, Labaciren, F. Kajino, Z. Y. Feng, S. Ayabe, X. R. Meng, Q. X. Geng, X. Wang, and Huaguang Wang
Subjects: Physics, Modulation effect, Astrophysics::High Energy Astrophysical Phenomena, Diurnal temperature variation, Astrophysics (astro-ph), General Physics and Astronomy, Astronomy, FOS: Physical sciences, Cosmic ray, Astrophysics, Air shower, Orbital motion, Physics::Space Physics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Variation (astronomy), Anisotropy, Event (particle physics)
Abstract: We report on the solar diurnal variation of the galactic cosmic-ray intensity observed by the Tibet III air shower array during the period from 1999 to 2003. In the higher-energy event samples (12 TeV and 6.2 TeV), the variations are fairly consistent with the Compton-Getting anisotropy due to the terrestrial orbital motion around the sun, while the variation in the lower-energy event sample (4.0 TeV) is inconsistent with this anisotropy. This suggests an additional anisotropy superposed at the multi-TeV energies, e.g. the solar modulation effect. This is the highest-precision measurement of the Compton-Getting anisotropy ever made., Comment: 4 pages, 2 figures, includes .bbl file
Published: 2004
Full Text: View/download PDF

40. The ARGO-YBJ experiment in Tibet

Author: A. ALOISIO, C. BACCI, K. Z. BAO, F. BARONE, B. BARTOLI, P. BERNARDINI, C. BLEVE, P. BRANCHINI, S. BUSSINO, E. CALLONI, P. CAMARRI, B. Y. CAO, R. CARDARELLI, M. CASOLINO, S. CATALANOTTI, A. CAVALIERE, S. CAVALIERE, F. CESARONI, M. CHA, P. CRETI, G. CUSIMANO, G. D'ALI STAITI, DANZENGLUOBU, V. D'ELIA, B. D'ETTORRE PIAZZOLI, M. DE VINCENZI, T. DI GIROLAMO, G. DI SCIASCIO, Z. Y. FENG, Y. FU, X. Y. GAO, Q. X. GENG, H. W. GUO, H. H. HE, Q. HUANG, M. IACOVACCI, N. IUCCI, H. Y. JAI, F. M. KONG, H. H. KUANG, LABACIREN, B. LI, J. Y. LI, B. LIBERTI, G. LIGUORI, Z. Q. LIU, H. LU, X. H. MA, G. MANCARELLA, S. M. MARI, MARSELLA, GIOVANNI, MARTELLO, Daniele, X. R. MENG, L. MILANO, T. MINEO, J. MU, L. NICASTRO, D. ORLANDO, A. PAOLONI, Z. R. PENG, P. PISTILLI, G. RASO, B. SACCO, L. SAGGESE, R. SANTONICO, L. SCARSI, P. R. SHEN, C. STANESCU, M. STORINI, L. R. SUN, S. C. SUN, A. SURDO, Y. H. TAN, P. VALLANIA, S. VERNETTO, C. R. WANG, H. WANG, H. Y. WANG, Y. N. WEI, Q. K. YAO, G. C. YU, X. D. YUE, A. F. YUAN, H. M. ZHANG, J. L. ZHANG, N. J. ZHANG, T. J. ZHANG, X. Y. ZHANG, ZHAXISANGZHU, ZHAXICIREN, Q. Q. ZHU, DE MITRI, Ivan, PANAREO, Marco, Aloisio, A., Bacci, C., Bao, K. Z., Barone, F., Bartoli, B., Bernardini, P., Bleve, C., Branchini, P., Bussino, S., Calloni, E., Camarri, P., Cao, B. Y., Cardarelli, R., Casolino, M., Catalanotti, S., Cavaliere, A., Cavaliere, S., Cesaroni, F., Cha, M., Creti, P., Cusimano, G., D'ALI STAITI, G., Danzengluobu, D'Elia, V., DE MITRI, Ivan, 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, Huang, Q., Iacovacci, M., Iucci, N., Jai, H. Y., Kong, F. M., Kuang, H. H., Labaciren, Li, B., J. Y., Li, Liberti, B., Liguori, G., Liu, Z. Q., Lu, H., X. H., Ma, Mancarella, G., Mari, S. M., Marsella, Giovanni, Martello, Daniele, Meng, X. R., Milano, L., Mineo, T., Mu, J., Nicastro, L., Orlando, D., Panareo, Marco, Paoloni, A., Peng, Z. R., Pistilli, P., Raso, G., Sacco, B., Saggese, L., Santonico, R., Scarsi, L., Shen, P. R., Stanescu, C., Storini, M., Sun, L. R., Sun, S. C., Surdo, A., Tan, Y. H., Vallania, P., Vernetto, S., Wang, C. R., Wang, H., Wang, H. Y., Wei, Y. N., 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, and Zhu, Q. Q.
Subjects: Ground based detectors, Gamma-ray sources, Gamma-ray bursts, Cosmic rays
Published: 2001

41. Primary proton spectrum between 200 TeV and 1000 TeV observed with the Tibet burst detector and air shower array

Author: N. J. Zhang, M. He, Takeshi Saito, Danzengluobu, H. M. Zhang, H. Sugimoto, Y. Katayose, T. Yuda, J. Y. Li, A. F. Yuan, K. Hibino, Zhaxisangzhu, C. S. Zhang, Jieru Ren, S. L. Lu, I. Ohta, M. Amenomori, C. R. Wang, M. Shibata, Katsuaki Kasahara, K. Taira, Z. R. Peng, Y. Yamamoto, N. Hotta, X. Y. Zhang, K. Izu, Labaciren, Z. Y. Feng, Y. Fu, M. Sakata, T. Utsugi, Hsiao-Chi Lu, K.Mizutani K.Mizutani, T. Ouchi, X. R. Meng, Huaguang Wang, T. Sasaki, T. Shirai, Caidong, F. Kajino, Masaki Nishizawa, H. Y. Jia, J. Mu, Y. H. Tan, Q. Huang, G. X. Luo, S. Ayabe, A. Shiomi, H. Nanjo, Zhaxiciren, N. Tateyama, M. Ohnishi, Z. Z. Shi, X. W. Xu, A. X. Huo, G. C. Yu, H. W. Guo, Jia Zhang, S. Torii, and L. K. Ding
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Proton, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Detector, FOS: Physical sciences, chemistry.chemical_element, Cosmic ray, Astrophysics, Power law, Nuclear physics, Air shower, chemistry, High Energy Physics::Experiment, Helium, Energy (signal processing)
Abstract: Since 1996, a hybrid experiment consisting of the emulsion chamber and burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea level, 606 g/cm^2) in Tibet. This experiment can detect air-shower cores, called as burst events, accompanied by air showers in excess of about 100 TeV. We observed about 4300 burst events accompanied by air showers during 690 days of operation and selected 820 proton-induced events with its primary energy above 200 TeV using a neural network method. Using this data set, we obtained the energy spectrum of primary protons in the energy range from 200 to 1000 TeV. The differential energy spectrum obtained in this energy region can be fitted by a power law with the index of -2.97 $\pm$ 0.06, which is steeper than that obtained by direct measurements at lower energies. We also obtained the energy spectrum of helium nuclei at particle energies around 1000 TeV., 25 pages, 22 figures, Accepted for publication in Phys. Rev. D
Published: 2000

42. A study of the shadowing of galactic cosmic rays by the sun in a quiet phase of solar activity with the Tibet air shower array

Author: M. Amenomori, S. Ayabe, null Caidong, null Danzengluobu, L. K. Ding, Z. Y. Feng, Y. Fu, H. W. Guo, M. He, K. Hibino, N. Hotta, Q. Huang, A. X. Huo, K. Izu, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, null Labaciren, J. Y. Li, H. Lu, S. L. Lu, G. X. Luo, X. R. Meng, K. Mizutani, J. Mu, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, T. Ouchi, Z. R. Peng, J. R. Ren, T. Saito, M. Sakata, T. Sasaki, Z. Z. Shi, M. Shibata, A. Shiomi, T. Shirai, Y. Suga, H. Sugimoto, K. Taira, Y. H. Tan, N. Tateyama, S. Torii, T. Utsugi, C. R. Wang, H. Wang, X. W. Xu, Y. Yamamoto, G. C. Yu, A. F. Yuan, T. Yuda, C. S. Zhang, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, null Zhaxiciren, and null Zhaxisangzhu
Subjects: Physics, Solar minimum, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Solar cycle, Air shower, Earth's magnetic field, Space and Planetary Science, Shadow, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Ultra-high-energy cosmic ray, Astrophysics::Earth and Planetary Astrophysics, Interplanetary spaceflight
Abstract: We have shown that the Sun's shadow by high energy cosmic rays moves year by year and its behavior is correlated with a time variation of the large-scale structure of the solar and interplanetary magnetic fields. The solar activity was near minimum in the period from 1996 through 1997. Using the data obtained with the Tibet air shower array, we examined the shadowing of cosmic rays by the Sun in this quiet phase of solar cycle, and found that the Sun's shadow was just in the apparent direction of the Sun, though it was observed at the position considerably away from the Sun to the south-west in the period between 1990 and 1993. It is known that the magnetic pole of equivalent solar dipole was reversed during the previous active phase, and near solar minimum the dipole was aligned with the rotating axis, preserving its N-pole on the north pole side of the Sun. This causes the solar magnetic field to shift the Sun's shadow to the east. Thus, the observed results suggest that the shift of the Sun's shadow due to the solar magnetic field was pushed back by the effect of the geomagnetic field, since the geomagnetic field always make the shadow shift to the west. We discuss the Sun's shadow observed during the period near solar minimum in 1996-1997 and compare it with the simulation results., 13 pages, 6 figures, to appear in ApJ
Published: 2000

43. Measurement of air shower cores to study the cosmic ray composition in the knee energy region

Author: A. X. Huo, K. Izu, N. J. Zhang, S. L. Lu, N. Tateyama, H. W. Guo, Jia Zhang, S. Torii, X. R. Meng, Y. Fu, M. He, Z. Z. Shi, M. Amenomori, C. S. Zhang, Jieru Ren, T. Sasaki, Huaguang Wang, Masaki Nishizawa, Zhaxisangzhu, Z. Y. Feng, M. Shibata, M. Sakata, K. Hibino, T. Yuda, A. Shiomi, T. Ouchi, Y. H. Tan, Zhaxiciren, H. M. Zhang, J. Y. Li, J. Mu, I. Ohta, H. Sugimoto, H. Nanjo, C. R. Wang, Danzengluobu, Y. Yamamoto, G. C. Yu, X. W. Xu, Q. Huang, S. Ayabe, L. K. Ding, A. F. Yuan, F. Kajino, Caidong, Z. R. Peng, G. X. Luo, Labaciren, M. Ohnishi, T. Shirai, H. Y. Jia, T. Utsugi, N. Hotta, X. Y. Zhang, Hsiao-Chi Lu, K. Taira, To. Saito, K.Mizutani K.Mizutani, Katsuaki Kasahara, and Y. Katayose
Subjects: Physics, Nuclear and High Energy Physics, Astrophysics (astro-ph), Monte Carlo method, FOS: Physical sciences, Cosmic ray, Astrophysics, Nuclear physics, Air shower, Event data, Scintillation counter, Nuclear emulsion, Detector array, Energy (signal processing)
Abstract: Since 1996, a hybrid experiment consisting of an emulsion chamber and a burst detector array and the Tibet-II air shower array has been operated at Yangbajing (4300 m above sea level) in Tibet. This experiment can detect air-shower cores, called burst events, accompanied by air showers in excess of about 100 TeV. Using the burst event data observed by this experiment, we discuss the primary cosmic ray composition around the knee in comparison with the Monte Carlo simulations. In this paper, we show that all the features of burst events are wholly compatible with the heavy enriched composition in the knee energy region., 20 pages, 21 figures, to appear in Physical Review D
Published: 2000

44. Hadroproduction of theχ1andχ2states of charmonium in 800-GeV/cproton-silicon interactions

Author: M. Jenkins, P. Torre, T. Alexopoulos, M. Cooper, David B. Cline, W. Selove, Gianluca Introzzi, J. G. Sun, R. P. Smith, M. Haire, C. T. Murphy, G. H. Mo, S. Misawa, P. Creti, E. C. Dukes, L. Antoniazzi, Bradley Cox, Michael Wayne Arenton, M. He, D. Judd, Z. L. Cao, J. Lys, L. Turnbull, K. S. Nelson, N. Yao, H. H. Bingham, Stanislav Tokár, W. Kowald, P. Hanlet, V. Elia, G. Liguori, S. Conetti, C. Wei, Alexander Ledovskoy, H. C. Ballagh, P.O. Mazur, Germano Bonomi, E. Gorini, Leonard Spiegel, D. E. Wagoner, V. Pogosyan, V. Golovatyuk, K. Clark, Martin M. Block, A. R. Erwin, B. T. Zou, Kwong Lau, A. McManus, Wannian Yang, J. Trischuk, T.Y. Chen, C. Durandet, C. R. Wang, K. Hagan, A. Boden, S. Ramachandran, A. Blankman, G. Corti, N. J. Zhang, F. Grancagnolo, J. Rhoades, W. Kononenko, and L.R. Fortney
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Silicon, Proton, 010308 nuclear & particles physics, Radiative decay, chemistry.chemical_element, Sigma, 01 natural sciences, 7. Clean energy, Nuclear physics, Color model, chemistry, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: The cross sections for the hadroproduction of the {chi}{sub 1} and {chi}{sub 2} states of charmonium in proton-silicon collisions at {radical}(s)=38.8 GeV have been measured in Fermilab fixed target experiment 771. The {chi} states were observed via their radiative decay to J/{psi}{gamma}, where the photon converted to e{sup +}e{sup -} in the material of the spectrometer. The estimated values for the {chi}{sub 1} and {chi}{sub 2} cross sections for x{sub F}>0 are 263{+-}69(stat){+-}32(syst) and 498{+-}143(stat){+-}67(syst) nb per nucleon, respectively. The resulting {sigma}({chi}{sub 1})/{sigma}({chi}{sub 2}) ratio of 0.53{+-}0.20(stat){+-}0.07(syst), although somewhat larger than most theoretical expectations, can be accommodated by the latest theoretical estimates. (c) 2000 The American Physical Society.
Published: 2000

45. Search for hidden charm states decaying into J/ psi or psi ' plus pions

Author: C. T. Murphy, Guffey K, C.M. Jenkins, Q. Shen, Leonard Spiegel, Cao Z, Bradley Cox, M. He, P. Pramantiotis, R. Tesarek, F. Turkot, B. T. Zou, Antoniazzi L, L. Fortney, A. Manousakis-Katsikakis, Tao Chen, G. Zioulas, Dg Stairs, D. Judd, R. A. Rameika, R. P. Smith, J. Kuzminski, Arenton M, Conetti S, D. E. Wagoner, Pavlos Ioannou, N. Yao, A. Marchionni, C.H. Shen, SW Delchamps, Tan Y, G. Voulgaris, T. Turkington, G. Corti, N. J. Zhang, Christine Kourkoumelis, P.O. Mazur, A. Simard, LeCompte T, M. Haire, Wannian Yang, L. Turnbull, Zhang X, Spyros Tzamarias, Chao Wang, M. Rosati, J. L. Rosen, and L. K. Resvanis
Subjects: Physics, Particle physics, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, Pion, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Computer Science::Information Retrieval, High Energy Physics::Experiment, Mathematical physics
Abstract: A search has been made in 300 GeV/[ital c] [pi][sup [plus minus]]- and proton-Li interactions for production of states that decay into [ital J]/[psi] or [psi][prime] plus one or two pions. A 2.5[sigma] enhancement in the [ital J]/[psi] [pi][sup 0] spectrum, possibly the recently reported [sup 1][ital P][sub 1] state of charmonium, is observed at a mass of 3.527 GeV/[ital c][sup 2]. In the [ital J]/[psi] plus two pion mass spectrum, we report, together with the expected [psi][prime][r arrow][ital J]/[psi] [pi][sup +][pi][sup [minus]], the tentative observation of a structure at a mass of 3.836 GeV/[ital c][sup 2]. No enhancements are seen in the [ital J]/[psi] [pi][sup [plus minus]][pi][sup [plus minus]], [ital J]/[psi] [pi][sup [plus minus]][pi][sup 0], [ital J]/[psi] [pi][sup [plus minus]], or [psi][prime] [pi][sup [plus minus]] mass spectra.
Published: 1994

46. A Proposal to Continue the Study of Hidden Charm and Beauty States by Triggering on High Transverse Momentum Single Muons and High Mass Dimuons in 800 GeV/c pN Interactions

Author: J. Lys, Gianluca Introzzi, L. Turnbull, Y. Lomakin, S. Misawa, A. Dolgert, J. Rhoades, G. H. Mo, D. E. Wagoner, S. Ramachandran, J. G. Sun, Bradley Cox, T. Lawry, I.E. Chirikov-Zorin, A. Semenov, A. R. Erwin, P. Pistilli, A. Kurilin, S. Conetti, M. Panareo, Irakli Minashvili, A. McManus, N. Zhuravlev, N. Yao, Edoardo Gorini, I. Tzamouranis, G.A. Chlachidze, K. S. Nelson, V.G. Timofeev, A.G. Volodko, V. V. Glagolev, G. Cataldi, C. R. Wang, V. Geger, P.O. Mazur, A. Lanza, G. Corti, Germano Bonomi, V. Pogosian, A. Razinkov, H. H. Bingham, D. Judd, V. Elia, K. Hagan-Ingram, Leonard Spiegel, M. Recagni, C. Durandet, C. T. Murphy, D. Khubua, M. Emery, V. Kushpil, W. Davis, P. Hanlet, F. Grancagnolo, S.L. Bagdasarov, Wannian Yang, N. Rusyakovich, M. Jenkins, P. Torre, N. J. Zhang, T. Alexopoulos, V. Golovatyuk, C. Ballagh, D. Dzhincharadze, Kwong Lau, Catherine A. Dukes, Z. L. Cao, G. Liguori, D. Chapman, M. He, Alexander Ledovskoy, S. Tokar, Michael Wayne Arenton, Vladimir B. Flyagin, C. Glover, M. Cooper, V. Rumyantsev, J. Budagov, David B. Cline, Martin M. Block, S. Malyukov, R. P. Smith, M. Haire, T.Y. Chen, P. Creti, G. Massey, E.N. Tsyganov, N. Malakhov, Sergio P Ratti, K. Clark, J. Jennings, J. Trischuk, and T. Gabriel
Subjects: Nuclear physics, Physics, Particle physics, Muon, media_common.quotation_subject, Transverse momentum, Beauty, High mass, Charm (quantum number), media_common
Published: 1993

47. A combination drift chamber/pad chamber for very high readout rates

Author: C. T. Murphy, A. Blankman, W. Kononenko, J. Trischuk, N. Yao, G. Cataldi, Edoardo Gorini, A. Lanza, E. C. Dukes, S. Conetti, L. Turnbull, W. Selove, Wannian Yang, H. H. Bingham, A. Boden, F. Grancagnolo, Martin M. Block, N. J. Zhang, Thomas LeCompte, J. Rhoades, W. Kowald, T.Y. Chen, J. Segal, G. Corti, Z. L. Cao, M. Jenkins, C. R. Wang, P. Torre, S. Misawa, J. Budagov, Gianluca Introzzi, S.V. Borodin, A. R. Erwin, P. Creti, L. Antoniazzi, V. Golovatyuk, J. Lys, M. Cooper, T. Yao, L.R. Fortney, D. E. Wagoner, T. Trojak, A. McManus, D. Judd, David B. Cline, S. Ramachandran, G. Liguori, M. Panareo, T. Kaeding, J. G. Sun, K. S. Nelson, V. Elia, S. Tokar, Leonard Spiegel, M. Recagni, P. Hanlet, G. H. Mo, T. Alexopoulos, P.O. Mazur, Bradley Cox, R. VanBerg, K. Clark, C. Ballagh, J. Rosen, C. Durandet, S.N. Zhang, C. Wei, M. He, Michael Wayne Arenton, E. Tsyganov, M. Newcomer, Kwong Lau, J. Jennings, R. P. Smith, and M. Haire
Subjects: High rate, Physics, Optics, Spectrometer, Physics::Instrumentation and Detectors, business.industry, Transverse momentum, Coordinate system, Laboratory experiment, Approx, business, Fermi Gamma-ray Space Telescope, Anode
Abstract: Six medium-sized ({approx}1 {times} 2 m{sup 2}) drift chambers with pad and stripe readout have been constructed for and are presently operating in Fermi National Accelerator Laboratory experiment E-771. Each chamber module actually represents a pair of identical planes: two sets of anode wires, two sets of stripes, and two sets of pads. The wire planes are read out separately and represent X measurements in the coordinate system of the experiment. The twin stripe and pad planes are internally paired within the chamber modules; stripe signals represent Y measurements and pad signals combination X and Y measurements. Signals which develop on the stripes and pads are mirror (but inverted) images of what is seen on the wires. In addition to being used in the off-line pattern recognition, pad signals are also used as inputs to an on-line high transverse momentum (pt) trigger processor. While the techniques involved in the design and construction of the chambers are not novel, they may be of interest to experiments contemplating very large area, high rate chambers for future spectrometers.
Published: 1991

48. [Determination of chlorphenamine and propantheline bromide in pukeling tablets by differential--linear combination derivative spectrophotometry]

Author: L M, Lin, N J, Zhang, and H Y, Wang
Subjects: Chlorpheniramine, Drug Combinations, Spectrophotometry, Ultraviolet, Propantheline, Tablets
Abstract: This paper provides the basic principle and experimental technique of differential--linear combination equal value derivative spectrophotometry. Quantitative analysis of three or four component--mixture can be done without separation. This method was investigated to assay the contents of chlorphenamine and propantheline bromide in Pukeling tablets by using UV-210A spectrophotometer. The average recoveries of chlorphenamine and propantheline bromide were 100.2 +/- 1.49% (CV) and 99.89 +/- 1.03% (CV) respectively. The results showed that it not only can effectively remove disturbances from each other, but also give higher sensitivity and accuracy.
Published: 1991

49. Tibet air shower array: results and future plan

Author: M Amenomori, X J Bi, D Chen, S W Cui, null Danzengluobu, L K Ding, X H Ding, C Fan, C F Feng, Z Feng, Z Y Feng, X Y Gao, Q X Geng, H W Guo, H H He, M He, K Hibino, N Hotta, H Hu, H B Hu, J Huang, Q Huang, H Y Jia, F Kajino, K Kasahara, Y Katayose, C Kato, K Kawata, null Labaciren, G M Le, A F Li, J Y Li, Y -Q Lou, H Lu, S L Lu, X R Meng, K Mizutani, J Mu, K Munakata, A Nagai, H Nanjo, M Nishizawa, M Ohnishi, I Ohta, H Onuma, T Ouchi, S Ozawa, J R Ren, T Saito, T Y Saito, M Sakata, T K Sako, M Shibata, A Shiomi, T Shirai, H Sugimoto, M Takita, Y H Tan, N Tateyama, S Torii, H Tsuchiya, S Udo, B Wang, H Wang, X Wang, Y Wang, Y G Wang, H R Wu, L Xue, Y Yamamoto, C T Yan, X C Yang, S Yasue, Z H Ye, G C Yu, A F Yuan, T Yuda, H M Zhang, J L Zhang, N J Zhang, X Y Zhang, Y Zhang, null Zhaxisangzhu, X X Zhou, and The Tibet ASγ Collaboration
Subjects: History, Geography, Altitude, Air shower, Meteorology, Plan (archaeology), Sea level, Computer Science Applications, Education, Muon detector
Abstract: The Tibet air shower array, which has an effective area of 36,900 m2, has been in operation at Yangbajing in Tibet, China at an altitude of 4,300 m above sea level. In this paper, we will briefly introduce the recent gamma-ray observation with the present Tibet air shower array and our future plan which is called the Tibet muon detector (MD) project.
Published: 2008

50. Results from the E-705 electromagnetic shower position detector

Author: G. Voulgaris, T. Turkington, D. E. Wagoner, K.W. Lai, M. Rosati, C.M. Jenkins, N. Yao, I. Koutentakis, A. Manousakis-Katsikakis, C. T. Murphy, A. Simard, Spyros Tzamarias, Q. Shen, T. Pramantiotis, W. Tucker, Bradley Cox, R. A. Rameika, K. Guffey, B. Etemadi, M. Haire, T.Y. Chen, W. Yang, N. J. Zhang, He Mao, Leonard Spiegel, Xiang Zhang, A. Marchionni, Christine Kourkoumelis, F. Turkot, D. Judd, Dg Stairs, L. Turnbull, J. L. Rosen, P. Ioannu, R. Tesarek, Chao Wang, L. K. Resvanis, M. Vassiliou, L.R. Fortney, Michael Wayne Arenton, R. P. Smith, P.O. Mazur, G. Zioulas, J. Kuzminski, C.H. Shen, S. Conetti, and S. Delchamps
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Particle accelerator, STRIPS, Electromagnetic radiation, Particle detector, law.invention, Optics, Nuclear Energy and Engineering, Hodoscope, law, Position (vector), Measuring instrument, Calibration, Electrical and Electronic Engineering, business
Abstract: A fine-grain hodoscope to measure the position of showers in the outer (>52 cm) region of the E-705 electromagnetic calorimeter is described. The hodoscope is constructed with two layers of vertical conducting plastic tubes for the X position measurement of showers. Y position measurement of showers was accomplished by cathode-induced horizontal strips. A 50/50-ethane mixture bubbled through isopropyl alcohol at 0 degrees C was circulated through the tubes in parallel. The tubes were operated at +1.925 kV on the wire (below the region of saturated avalanche) in the limited proportionality mode. The hodoscope is described, and results are presented for the position resolution, shower width, and charge detected as a function of calibration electron energy. >
Published: 1989

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