ITA
ENG

Measurement of B-d(0)-(B)over-bar(d)(0) mixing rate from the time evolution of dilepton events at the Upsilon(4S)

Authors

Abe, K Abe, K Adachi, I Ahn, BS Aihara, H Akatsu, M Alimonti, G Aoki, K Asai, K Asai, M Asano, Y Aso, T Aulchenko, V Aushev, T Bakich, AM Banas, E Behari, S Behera, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chao, Y Cheon, BG Choi, SK Choi, Y Doi, Y Dragic, J Eidelman, S Enari, Y Enomoto, R Everton, CW Fang, F Fujii, H Fujita, Y Fukunaga, C Fukushima, M Garmash, A Gordon, A Gotow, K Guler, H Guo, R Haba, J Haji, T Hamasaki, H Hanagaki, K Handa, F Hara, K Hara, T Hastings, NC Hayashi, K Hayashii, H Hazumi, M Heenan, EM Higuchi, I Higuchi, T Hirai, T Hirano, H Hojo, T Hoshi, Y Hou, WS Hsu, SC Huang, HC Haung, YC Ichizawa, S Igarashi, Y Iijima, T Ikeda, H Ikeda, K Inami, K Inoue, Y Ishikawa, A Ishino, H Itoh, R Iwai, G Iwasaki, H Iwasaki, Y Jackson, DJ Jalocha, P Jang, HK Jones, M Kagan, R Kakuno, H Kaneko, J Kang, JH Kang, JS Kapusta, P Kasami, K Katayama, N Kawai, H Kawai, M Kawamura, N Kawasaki, T Kichimi, H Kim, DW Kim, H Kim, HJ Kim, H Kim, SK Kinoshita, K Kobayashi, S Koike, S Koishi, S Konishi, H Korotushenko, K Krokovny, P Kulasiri, R Kumar, S Kuniya, T Kurihara, E Kuzmin, A Kwon, YJ Lee, MH Lee, SH Leonidopoulos, C Li, HB Lu, RS Makida, Y Manabe, A Marlow, D Matsubara, T Matsuda, T Matsui, S Matsumoto, S Matsumoto, T Miyabayashi, K Miyake, H Miyata, H Moffitt, LC Mohapatra, A Moloney, GR Moorhead, GF Mori, S Mori, T Murakami, A Nagamine, T Nagasaka, Y Nagashima, Y Nakadaira, T Nakano, E Nakao, M Nakazawa, H Nam, JW Narita, S Natkaniec, Z Neichi, K Nishida, S Nitoh, O Noguchi, S Nozaki, T Ogawa, S Ohshima, T Ohshima, Y Okabe, T Okazaki, T Okuno, S Olsen, SL Ozaki, H Pakhlov, P Palka, H Park, CS Park, CW Park, H Peak, LS Peters, M Piilonen, LE Prebys, E Raaf, J Rodriguez, JL Root, N Rozanska, M Rybicki, K Ryuko, J Sagawa, H Sakai, Y Sakamoto, H Sakaue, H Satapathy, M Sato, N Satpathy, A Schrenk, S Semenov, S Sevior, ME Shibuya, H Shwartz, B Sidorov, A Sidorov, V Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, J Suzuki, K Suzuki, S Suzuki, SY Swain, SK Tajima, H Takahashi, T Takasaki, F Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Tanaka, Y Taylor, GN Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsuboyama, T Tsujita, Y Tsukamoto, T Tsukamoto, T Uehara, S Ueno, K Ujiie, N Unno, Y Uno, S Ushiroda, Y Usov, Y Vahsen, SE Varner, G Varvell, KE Wang, CC Wang, CH Wang, MZ Wang, TJ Watanabe, Y Won, E Yabsley, BD Yamada, Y Yamaga, M Yamaguchi, A Yamaguchi, H Yamaoka, H Yamaoka, Y Yamashita, Y Yamauchi, M Yanaka, S Yokoyama, M Yoshida, K Yusa, Y Yuta, H Zhang, CC Zhao, HW Zheng, Y Zhilich, V Zontar, D

Citation

K. Abe et al., Measurement of B-d(0)-(B)over-bar(d)(0) mixing rate from the time evolution of dilepton events at the Upsilon(4S), PHYS REV L, 86(15), 2001, pp. 3228-3232

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW LETTERS

ISSN journal

00319007 → ACNP

Volume

Issue

Year of publication

2001

Pages

3228 - 3232

Database

ISI

SICI code

0031-9007(20010409)86:15<3228:MOBMRF>2.0.ZU;2-Z

Abstract

We report a determination of the B-d(n)-N-n(d) mixing parameter Deltam(d) b ased on the time evolution of dilepton yields in Y (4S) decays. The measure ment is based on a 5.9 fb(-1) data sample collected by the Belie detector a t KEKB. The proper-time difference distributions for same-sign and opposite -sign dilepton events are simultaneously fitted to an expression containing Deltam(d) as a free parameter. Using both muons and electrons, we obtain D eltam(d) = 0.463 +/- 0.008 (stat) +/- 0.016 (syst) ps(-1). This is the firs t determination of Deltam(d) from time evolution measurements at the Y (4S) . We also place limits on possible CPT violations.