主頁 > Measurement of $K^{0} _{\mu 3}$ form factors |
Article | |
Report number | hep-ex/0703002 ; CERN-PH-EP-2006-033 ; CERN-PH-EP-2006-033 |
Title | Measurement of $K^{0} _{\mu 3}$ form factors |
Related title | FORM-FACTORS |
Author(s) |
Lai, A. (INFN, Cagliari ; Cagliari U.) ; Marras, D. (INFN, Cagliari ; Cagliari U.) ; Bevan, A. (Cambridge U.) ; Dosanjh, R.S. (Cambridge U.) ; Gershon, T.J. (Cambridge U.) ; Hay, B. (Cambridge U.) ; Kalmus, G.E. (Cambridge U.) ; Lazzeroni, C. (Cambridge U.) ; Munday, D.J. (Cambridge U.) ; Olaiya, E. (Cambridge U.) ; Parker, Michael Andrew (Cambridge U.) ; White, T.O. (Cambridge U.) ; Wotton, S.A. (Cambridge U.) ; Barr, G. (CERN) ; Bocquet, G. (CERN) ; Ceccucci, A. (CERN) ; Cuhadar-Donszelmann, T. (CERN) ; Cundy, D. (CERN) ; D'Agostini, G. (CERN) ; Doble, N. (CERN) ; Falaleev, V. (CERN) ; Gatignon, L. (CERN) ; Gonidec, A. (CERN) ; Gorini, B. (CERN) ; Govi, G. (CERN) ; Grafstrom, P. (CERN) ; Kubischta, W. (CERN) ; Lacourt, A. (CERN) ; Norton, A. (CERN) ; Palestini, S. (CERN) ; Panzer-Steindel, B. (CERN) ; Taureg, H. (CERN) ; Velasco, M. (CERN) ; Wahl, H. (CERN) ; Cheshkov, C. (Dubna, JINR) ; Hristov, P. (Dubna, JINR) ; Kekelidze, V. (Dubna, JINR) ; Litov, L. (Dubna, JINR) ; Madigozhin, D. (Dubna, JINR) ; Molokanova, N. (Dubna, JINR) ; Potrebenikov, Yu. (Dubna, JINR) ; Stoynev, S. (Dubna, JINR) ; Zinchenko, A. (Dubna, JINR) ; Knowles, I. (Edinburgh U.) ; Martin, V. (Edinburgh U.) ; Sacco, R. (Edinburgh U.) ; Walker, A. (Edinburgh U.) ; Contalbrigo, M. (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P. (INFN, Ferrara ; Ferrara U.) ; Duclos, J. (INFN, Ferrara ; Ferrara U.) ; Frabetti, P.L. (INFN, Ferrara ; Ferrara U.) ; Gianoli, A. (INFN, Ferrara ; Ferrara U.) ; Martini, M. (INFN, Ferrara ; Ferrara U.) ; Petrucci, F. (INFN, Ferrara ; Ferrara U.) ; Savrie, M. (INFN, Ferrara ; Ferrara U.) ; Bizzeti, A. (INFN, Florence ; Florence U.) ; Calvetti, M. (INFN, Florence ; Florence U.) ; Collazuol, G. (INFN, Florence ; Florence U.) ; Graziani, G. (INFN, Florence ; Florence U.) ; Iacopini, E. (INFN, Florence ; Florence U.) ; Lenti, M. (INFN, Florence ; Florence U.) ; Ruggiero, G. (INFN, Florence ; Florence U.) ; Veltri, M. (INFN, Florence ; Florence U.) ; Becker, H.G. (Mainz U., Inst. Phys.) ; Eppard, K. (Mainz U., Inst. Phys.) ; Eppard, M. (Mainz U., Inst. Phys.) ; Fox, H. (Mainz U., Inst. Phys.) ; Kalter, A. (Mainz U., Inst. Phys.) ; Kleinknecht, K. (Mainz U., Inst. Phys.) ; Koch, U. (Mainz U., Inst. Phys.) ; Kopke, L. (Mainz U., Inst. Phys.) ; Lopes da Silva, P. (Mainz U., Inst. Phys.) ; Marouelli, P. (Mainz U., Inst. Phys.) ; Pellmann, I. (Mainz U., Inst. Phys.) ; Peters, A. (Mainz U., Inst. Phys.) ; Renk, B. (Mainz U., Inst. Phys.) ; Schmidt, S.A. (Mainz U., Inst. Phys.) ; Schonharting, V. (Mainz U., Inst. Phys.) ; Schue, Y. (Mainz U., Inst. Phys.) ; Wanke, R. (Mainz U., Inst. Phys.) ; Winhart, A. (Mainz U., Inst. Phys.) ; Wittgen, M. (Mainz U., Inst. Phys.) ; Chollet, J.C. (Orsay, LAL) ; Fayard, L. (Orsay, LAL) ; Iconomidou-Fayard, L. (Orsay, LAL) ; Ocariz, J. (Orsay, LAL) ; Unal, G. (Orsay, LAL) ; Wingerter-Seez, I. (Orsay, LAL) ; Anzivino, G. (Perugia U. ; INFN, Perugia) ; Cenci, P. (Perugia U. ; INFN, Perugia) ; Imbergamo, E. (Perugia U. ; INFN, Perugia) ; Lubrano, P. (Perugia U. ; INFN, Perugia) ; Mestvirishvili, A. (Perugia U. ; INFN, Perugia) ; Nappi, A. (Perugia U. ; INFN, Perugia) ; Pepe, M. (Perugia U. ; INFN, Perugia) ; Piccini, M. (Perugia U. ; INFN, Perugia) ; Bertanza, L. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Carosi, R. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Casali, R. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Cerri, C. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Cirilli, M. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Costantini, F. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Fantechi, R. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Giudici, S. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Mannelli, I. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Pierazzini, G. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Sozzi, M. (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Cheze, J.B. (DAPNIA, Saclay) ; Cogan, J. (DAPNIA, Saclay) ; De Beer, M. (DAPNIA, Saclay) ; Debu, P. (DAPNIA, Saclay) ; Formica, A. (DAPNIA, Saclay) ; Granier de Cassagnac, R. (DAPNIA, Saclay) ; Mazzucato, E. (DAPNIA, Saclay) ; Peyaud, B. (DAPNIA, Saclay) ; Turlay, R. (DAPNIA, Saclay) ; Vallage, B. (DAPNIA, Saclay) ; Bernhard, R. (Siegen U.) ; Holder, M. (Siegen U.) ; Maier, A. (Siegen U.) ; Ziolkowski, M. (Siegen U.) ; Arcidiacono, R. (Turin U. ; INFN, Turin) ; Biino, C. (Turin U. ; INFN, Turin) ; Cartiglia, N. (Turin U. ; INFN, Turin) ; Marchetto, F. (Turin U. ; INFN, Turin) ; Menichetti, Ezio A. (Turin U. ; INFN, Turin) ; Pastrone, N. (Turin U. ; INFN, Turin) ; Nassalski, J. (Warsaw, Inst. Nucl. Studies) ; Rondio, E. (Warsaw, Inst. Nucl. Studies) ; Szleper, M. (Warsaw, Inst. Nucl. Studies) ; Wislicki, W. (Warsaw, Inst. Nucl. Studies) ; Wronka, S. (Warsaw, Inst. Nucl. Studies) ; Dibon, H. (Vienna, OAW) ; Fischer, G. (Vienna, OAW) ; Jeitler, M. (Vienna, OAW) ; Markytan, M. (Vienna, OAW) ; Mikulec, I. (Vienna, OAW) ; Neuhofer, G. (Vienna, OAW) ; Pernicka, M. (Vienna, OAW) ; Taurok, A. (Vienna, OAW) ; Widhalm, L. (Vienna, OAW) |
Affiliation | (CERN) ; (Univ. e Sezione dell'INFN di Cagliari, Cagliari, Italy) ; (Univ. of Cambridge) ; (JINR, Dubna, Russian Federation) ; (Univ. of Edinburgh) ; (Univ. Mainz, Mainz, Germany) ; (Univ. de Paris-Sud, Orsay, France) ; (Univ. e Sezione dell'INFN di Perugia, Perugia, Italy) ; (Scuola Normale Superiore e Sezione dell'INFN di Pisa, Pisa, Italy) ; (DSM/DAPNIA, CEA Saclay, Gif-sur-Yvette, France) ; (Univ. Siegen, Siegen, Germany) ; (LHEP, Warsaw, Poland) ; (Institut für Hochenergiephysik, Wien, Austria) |
Publication | 2007 |
Imprint | 15 Oct 2006 |
Number of pages | 21 |
Note | revised version submitted on 2008-02-18 15:01:38 22 pages 7 figures |
In: | Phys. Lett. B 647 (2007) 341-350 |
DOI | 10.1016/j.physletb.2007.02.039 |
Subject category | Particle Physics - Experiment |
Accelerator/Facility, Experiment | CERN SPS ; NA48 |
Abstract | This paper reports on a new high precision measurement of the form factors of the $K_{L}\rightarrow \pi^{\pm} \mu^{\mp} \nu_{\mu}$} decay. The data sample of about $2.3 \times 10^{6}$ events was recorded in 1999 by the NA48 experiment at CERN. Studying the Dalitz plot density we measured a linear, $\lambda^{'}_{+} = (16.8\pm 2.3_{stat} \pm 2.4_{syst})\times 10^{-3}$, and a quadratic, $\lambda^{''}_{+} = (4.0\pm 1.0_{stat} \pm 1.0_{syst})\times 10^{-3}$ term in the power expansion of the vector form factor. No evidence was found for a second order term for the scalar form factor; the linear slope was determined to be $\lambda_{0} = (9.1\pm 1.1_{stat} \pm 0.8_{syst})\times 10^{-3}$. \noindent Using a linear fit our results were: $\lambda_{+} = (26.1\pm 0.6_{stat} \pm 0.8_{syst} )\times 10^{-3}$ and, $\lambda_{0} = (12.6\pm 0.7_{stat} \pm 1.0_{syst} )\times 10^{-3}$. A pole fit of the form factors yields: $m_V = ( 915 \pm 10_{stat} \pm 17_{syst} )$ MeV/c$^2$ and $m_S = (1348 \pm 43_{stat} \pm 53_{syst} )$ MeV/c$^2$. |
Copyright/License | Elsevier B.V. |