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pro vyhledávání: '"N. Takashimizu"'
Akademický článek
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Autor:
N. Nakajima, Takashi Sasaki, S. S. Myung, Hyunyong Kim, H. Miyata, Y. Yamashita, Y. Sakai, D. Y. Kim, Kazuo Abe, K. Gotow, H. S. Ahn, C. Rosenfeld, A. M. Bacala, M. Shirai, T. J. Wang, J. S. Kang, A. Abashian, Yuki Fujii, R. L. Lander, S. Kobayashi, A. Kimura, Tsunehiko Omori, T. Nozaki, Moo Hyun Lee, K. Ueno, Saroj Kumar Sahu, Richard Breedon, S. K. Choi, Hiroyuki Sagawa, M. Sato, N. Takashimizu, A. Maki, L. Y. Zheng, Winston Ko, S.L. Olsen, P. N. Kirk, T. Aso, L. E. Piilonen, J. Rowe, Yasuhiro Sugimoto, A. Murakami, S. K. Kim, Kazumasa Miyano, Susumu Terada, S. Behari, Yoshimasa Kurihara, Steve Schnetzer, Y. Takaiwa, S. Matsumoto
Publikováno v:
Physics Letters B. 424:405-410
We observe ηc production in the two photon process e+e−→e+e−ηc at an e+e− center-of-mass energy of 58 GeV. We determine the radiative decay width Γγγ(ηc) to be 27±16(sta)±10(sys) keV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f16d3123b684ad0e7f3581cef767f000
https://doi.org/10.1016/s0370-2693(98)00203-2
https://doi.org/10.1016/s0370-2693(98)00203-2
Autor:
Koji Abe, S. S. Myung, S. Behari, H. S. Ahn, Yasuhiro Sugimoto, K. Gotow, Y. Sakai, P. N. Kirk, H. Miyata, Y. Yamashita, Winston Ko, Y. Takaiwa, D. Y. Kim, L. E. Piilonen, A. Abashian, K. Ueno, S. Choi, Hiroyuki Sagawa, N. Takashimizu, Saroj Kumar Sahu, R. L. Lander, J. Rowe, Yoshimasa Kurihara, M. Satou, Tsunehiko Omori, T. Kojima, Steve Schnetzer, C. Rosenfeld, S. K. Choi, N. Nakajima, Takashi Sasaki, Hyunyong Kim, S. Kanda, S. Matsumoto, T. Nozaki, Yuki Fujii, A. Maki, L. Y. Zheng, Richard Breedon, M. Shirai, T. J. Wang, J. S. Kang, S. Kobayashi, Moo Hyun Lee, T. Aso, S. L. Olsen, S. K. Kim, Kazumasa Miyano, Susumu Terada, A. Murakami
Publikováno v:
Physics Letters B. 420:233-240
A measurement of the strong coupling constant αS is presented using hadronic events produced in e+e− annihilations at s =58.0 GeV from the AMY detector at TRISTAN. The measurement is based on comparisons of the distributions of thrust, heavy jet m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1f343c66bd1c897e81c9e7795310b51
https://doi.org/10.1016/s0370-2693(97)01571-2
https://doi.org/10.1016/s0370-2693(97)01571-2
Autor:
Yasuhiro Sugimoto, A. Murakami, N Takashimizu, S. Matsumoto, S. Kobayashi, Saroj Kumar Sahu, S. Behari
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 385:463-470
We report on an electromagnetic calorimeter for the extremely forward region of the AMY detector at the TRISTAN e+ e− collider. The calorimeter has a lead-scintillating-fiber sandwich structure and photodiode readout. It has been installed as a par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475ee010126d7b0f9faf8af409ac0951
https://doi.org/10.1016/s0168-9002(96)01213-2
https://doi.org/10.1016/s0168-9002(96)01213-2
Autor:
N. Takashimizu, T. Sasaki, H. Miyata, T. Aso, K. Miyano, N. Nakajima, K. Ohkubo, M. Satou, M. Shirai, Y. Yamashita, K. Abe, Y. Fujii, S. Igarashi, Y. Kurihara, M.H. Lee, F. Liu, A. Maki, T. Nozaki, T. Omori, H. Sagawa, Y. Sakai, Y. Sugimoto, Y. Takaiwa, S. Terada, P. Kirk, T.J. Wang, A. Abashian, K. Gotow, L. Piilonen, S.K. Choi, C. Rosenfeld, L.Y. Zheng, R.E. Breedon, Winston Ko, R.L. Lander, J. Rowe, S. Kanda, S.L. Olsen, K. Ueno, F. Kajino, S. Schnetzer, S. Behari, S. Kobayashi, A. Murakami, S.K. Sahu, J.S. Kang, D.Y. Kim, S.S. Myung, H.S. Ahn, S.K. Kim, S. Matsumoto
Publikováno v:
Physics Letters B. 384:481-486
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abf67adbf5b477292fd4261c9ea4f57e
https://doi.org/10.1016/0370-2693(96)00933-1
https://doi.org/10.1016/0370-2693(96)00933-1
Autor:
Takashi Sasaki, P. N. Kirk, Hiroyuki Sagawa, Suyong Choi, K. Gotow, Y. Fujii, S. S. Myung, C. Rosenfeld, A. Murakami, M. H. Lee, M. Shirai, Y. Yamashita, S. Igarashi, F. Liu, A. Maki, T. Aso, L. Y. Zheng, K. Ohkubo, S. Kobayashi, D. Y. Kim, S. Behari, Yasuhiro Sugimoto, S. Matsumoto, T. Nozaki, Stephen L. Olsen, H. S. Ahn, N. Takashimizu, Yoshimasa Kurihara, Kazuo Abe, N. Nakajima, S. Kanda, M. Yang, R. L. Lander, S. K. Sahu, Kazumasa Miyano, T. J. Wang, Y. Takaiwa, Steve Schnetzer, H. Fujimoto, Susumu Terada, Winston Ko, Richard Breedon, K. Ueno, M. Sato, Seong Keun Kim, A. Abashian, J. S. Kang, F. Kajino, J. Rowe, Tsunehiko Omori, H. Miyata, Y. Sakai, L. E. Piilonen
Publikováno v:
Physics Letters B. 381:365-371
The forward-backward asymmetry in e(+)e(-) --> b (b) over bar at root s = 57.9 GeV and the b-quark branching ratio to muons have been measured using neural networks. Unlike previous methods for measuring the b (b) over bar forward-backward asymmetry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ea76657c6e82216a5b25bd6e8f00fc1
https://doi.org/10.1016/0370-2693(96)00543-6
https://doi.org/10.1016/0370-2693(96)00543-6
Autor:
L. E. Piilonen, K. Ueno, S. Kanda, M. Yang, J. S. Kang, F. Liu, S. S. Myung, Yasuhiro Sugimoto, N. Takashimizu, S. Behari, S. Kobayashi, Moo Hyun Lee, K. Gotow, Y. Fujii, H. S. Ahn, A. Murakami, Yoshimasa Kurihara, Steve Schnetzer, T. Aso, Hiroyuki Sagawa, H. Miyata, T. Nozaki, Y. Sakai, S.L. Olsen, Y. Takaiwa, D. Y. Kim, A. Abashian, P. N. Kirk, J. Rowe, S. Matsumoto, Tsunehiko Omori, S. K. Sahu, Kazumasa Miyano, Kazuo Abe, Winston Ko, Y. Yamashita, H. Fujimoto, Susumu Terada, Richard Breedon, T. J. Wang, M. Sato, A. Maki, L. Y. Zheng, C. Rosenfeld, S. K. Kim, N. Nakajima, R. L. Lander, Takashi Sasaki, S. K. Choi, K. Ohkubo, M. Shirai
Publikováno v:
Physics Letters B. 374:304-312
We have measured the ratio of the average sub-jet multiplicity in 3-jet to 2-jet events, R(23), and 4-jet to 2-jet events, R(24), using the e(+)e(-) annihilation data at root s = 58 GeV obtained from the AMY detector. We compare the measured values o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86c9e4871485d1602eaa75bc53ea05b4
https://doi.org/10.1016/0370-2693(96)00328-0
https://doi.org/10.1016/0370-2693(96)00328-0
Autor:
Richard Breedon, R. L. Lander, C. Rosenfeld, M. Sato, T. J. Wang, S. K. Sahu, Kazumasa Miyano, L. E. Piilonen, Hiroyuki Sagawa, Y. Fujii, Y. Takaiwa, Tsunehiko Omori, H. Fujimoto, T. Nozaki, S. Behari, Stephen L. Olsen, Susumu Terada, A. Abashian, S. Igarashi, S. S. Myung, J. S. Kang, N. Takashimizu, S. Kobayashi, F. Liu, F. Kajino, Yoshimasa Kurihara, H. Miyata, D. Y. Kim, Y. Sakai, K. Ohkubo, A. Maki, Moo Hyun Lee, M. Shirai, A. Murakami, J. Rowe, L. Y. Zheng, Kazuo Abe, Seong Keun Kim, N. Nakajima, H. S. Ahn, P. N. Kirk, Winston Ko, Y. Yamashita, Takashi Sasaki, Suyong Choi, M. Yang, S. Matsumoto, Steve Schnetzer, S. Kanda, K. Gotow, T. Aso, K. Ueno, Y. Sugimoto
Publikováno v:
Physics Letters B. 369:86-92
A study of e + e − annihilations into final states containing a single energetic photon with no accompanying particles is made at a center of mass energy of 57.8 GeV. The measured cross section is consistent with expectations from standard model pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab9dec2d1ee6508a5ff3e4d075a89673
https://doi.org/10.1016/0370-2693(95)01590-6
https://doi.org/10.1016/0370-2693(95)01590-6
Autor:
S. Wilson, L. E. Piilonen, Saroj Kumar Sahu, J. Rowe, A. Bodek, C. Rosenfeld, M. E. Mattson, S. Behari, J. S. Kang, Dong-Chul Son, N. Takashimizu, S. K. Choi, K. Ohkubo, Tsunehiko Omori, D. Haim, L. M. Chinitz, K. W. Park, T. Nozaki, Hiroyuki Sagawa, S. Kobayashi, P. N. Kirk, S. Ebara, Moo Hyun Lee, M. Oyoshi, D. Y. Kim, Bj Kim, S. Lusin, Stephen L. Olsen, Y. Yamashita, T. Kumita, Yoshimasa Kurihara, H. Miyata, Takashi Sasaki, R. L. Lander, Y. Sakai, C. P. Cheng, C. A. Fry, Winston Ko, C. Velissaris, D. K. Cho, Yasuhiro Sugimoto, Ryuki Tanaka, Y. Takaiwa, T. Ishizuka, Y. S. Chung, M. H. Ye, F. Liu, A. Abashian, S. K. Kim, F. Kajino, Kazumasa Miyano, Susumu Terada, K. Gotow, Y. Fujii, S. S. Myung, A. Murakami, K. B. Lee, Richard Breedon, T. Aso, S. Kanda, K. Ueno, J. Vinson, J. R. Smith, K. L. Sterner, David Stuart, R. C. Walker, Steve Schnetzer, A. Maki, L. Y. Zheng, Kazuo Abe, M. Shirai, S. Matsumoto
Publikováno v:
Physical Review D. 52:4872-4876
We have measured the azimuthal correlation of hadrons produced in e(+)e(-) annihilations at root s=58 GeV. In perturbative QCD these correlations are sensitive to the interference between soft gluons emitted at large angles with respect to the event
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f457260318da95461bc2265364d8e74
https://doi.org/10.1103/physrevd.52.4872
https://doi.org/10.1103/physrevd.52.4872
Autor:
L. E. Piilonen, Bj Kim, S. K. Sahu, Kazumasa Miyano, K. Ohkubo, Seong Keun Kim, M. H. Lee, Susumu Terada, K. Gotow, Y. Fujii, M. Oyoshi, N. Nakajima, A. Murakami, P. N. Kirk, T. Aso, S. Behari, H. S. Ahn, Suyong Choi, Takashi Sasaki, R. L. Lander, Y. Yamashita, S. Matsumoto, S. Kobayashi, Kisoo Lee, Kazuo Abe, K. Ueno, Y. Sugimoto, A. Abashian, H. Fujimoto, J. R. Smith, S. Kanda, M. Yang, Winston Ko, Hiroyuki Sagawa, J. Rowe, J. S. Kang, F. Kajino, Tsunehiko Omori, Dong-Chul Son, T. J. Wang, A. Bodek, Ryuki Tanaka, Steve Schnetzer, M. Shirai, Y. Takaiwa, N. Takashimizu, C. Rosenfeld, H. Miyata, Y. Sakai, Stephen L. Olsen, S. S. Myung, A. Maki, L. Y. Zheng, Yoshimasa Kurihara, T. Nozaki, F. Liu, D. Y. Kim, Richard Breedon, M. Sato
Publikováno v:
Physics Letters B. 363:249-258
Measurements of open charm production in photon-photon collisions made with the AMY detector at TRISTAN are reported. Charmed hadrons were identified by detecting the high momentum muons or electrons from their semileptonic decays. The data sample co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd26bb3ee0a6f156412a2845f5beafc8
https://doi.org/10.1016/0370-2693(95)01175-0
https://doi.org/10.1016/0370-2693(95)01175-0