High-statistics study of the tau(-)->pi(-)pi(0)nu(tau) decay

  • Fujikawa, M.
  • Hayashii, H.
  • Eidelman, S.
  • Adachi, I.
  • Aihara, H.
  • ... Cheon, Byung Gu
  • 외 148명
Citations

WEB OF SCIENCE

196
Citations

SCOPUS

230

초록

We report a high-statistics measurement of the branching fraction for tau(-)->pi(-)pi(0)nu(tau) and the invariant mass spectrum of the produced pi(-)pi(0) system using 72.2 fb(-1) of data recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fraction obtained is (25.24 +/- 0.01 +/- 0.39)%, where the first error is statistical and the second is systematic. The unfolded pi(-)pi(0) mass spectrum is used to determine resonance parameters for the rho(770), rho(')(1450), and rho('')(1700) mesons. We also use this spectrum to estimate the hadronic (2 pi) contribution to the anomalous magnetic moment of the muon (a(mu)(pi pi)). Our result for a(mu)(pi pi) integrated over the mass range root s=2m(pi)-1.8 GeV/c(2) is a(mu)(pi pi)=(523.5 +/- 1.5(exp)+/- 2.6(Br)+/- 2.5(isospin))x10(-10), where the first error is due to the experimental uncertainties, the second is due to the uncertainties in the branching fractions, and the third is due to the uncertainties in the isospin-violating corrections.

키워드

ELECTROWEAK RADIATIVE-CORRECTIONSPI(+)PI(-) CROSS-SECTIONMONTE-CARLO SIMULATIONPION FORM-FACTORSPECTRAL FUNCTIONSE(+)E(-) ANNIHILATIONBHABHA SCATTERINGBRANCHING RATIOSMAGNETIC-MOMENTPROGRAM BHLUMI
제목
High-statistics study of the tau(-)->pi(-)pi(0)nu(tau) decay
저자
Fujikawa, M.Hayashii, H.Eidelman, S.Adachi, I.Aihara, H.Arinstein, K.Aulchenko, V.Aushev, T.Bakich, A. M.Balagura, V.Barberio, E.Bay, A.Bedny, I.Belous, K.Bhardwaj, V.Bitenc, U.Bondar, A.Bracko, M.Brodzicka, J.Browder, T. E.Chang, P.Chao, Y.Chen, A.Cheon, Byung GuChistov, R.Cho, I. -S.Choi, Y.Dalseno, J.Dash, M.Epifanov, D.Gabyshev, N.Golob, B.Ha, H.Haba, J.Hara, K.Hasegawa, Y.Hayasaka, K.Hazumi, M.Heffernan, D.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwabuchi, M.Iwasaki, M.Kah, D. H.Kaji, H.Kataoka, S. U.Kawasaki, T.Kichimi, H.Kim, H. O.Kim, S. K.Kim, Y. I.Kim, Y. J.Korpar, S.Krizan, P.Krokovny, P.Kumar, R.Kuzmin, A.Kwon, Y. -J.Kyeong, S. -H.Lange, J. S.Lee, M. J.Lee, S. E.Limosani, A.Liu, C.Liu, Y.Liventsev, D.MacNaughton, J.Mandl, F.Matyja, A.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mizuk, R.Moloney, G. R.Mori, T.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Noguchi, S.Nozaki, T.Ohshima, T.Okuno, S.Olsen, S. L.Ozaki, H.Pakhlov, P.Pakhlova, G.Palka, H.Park, C. W.Park, H.Park, H. K.Peak, L. S.Pestotnik, R.Piilonen, L. E.Poluektov, A.Sahoo, H.Sakai, Y.Schneider, O.Schwartz, A. J.Seidl, R.Sekiya, A.Senyo, K.Sevior, M. E.Shapkin, M.Shebalin, V.Shen, C. P.Shiu, J. -G.Shwartz, B.Singh, J. B.Sokolov, A.Stanic, S.Staric, M.Sumiyoshi, T.Takasaki, F.Tamura, N.Tanaka, M.Taylor, G. N.Teramoto, Y.Trabelsi, K.Tsuboyama, T.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Vervink, K.Vinokurova, A.Wang, C. H.Wang, P.Wang, X. L.Watanabe, Y.Won, E.Yamashita, Y.Yamauchi, M.Yuan, C. Z.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.
DOI
10.1103/PhysRevD.78.072006
발행일
2008-10
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
78
7
페이지
1 ~ 22

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