Study of →π<sup>+sup>π<sup>−sup>π<sup>0sup> with CMD-2 detector
- 作者：R.R. Akhmetshin ; V.M. Aulchenko ; V.Sh. Banzarov ; L.M. Barkov ; N.S. Bashtovoy ; A.E. Bondar ; D.V. Bondarev ; A.V. Bragin ; S.I. Eidelman ; D.A. Epifanov et al.
- 刊名：Physics Letters B
- 出版年：2006
- 期刊代码：58_03702693
- 类别：ph
- 出版时间：9 November 2006
- 卷：642
- 期：3
- 页码：203-209
- 文件大小：654 K
摘要
The cross section of the process style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4M1TXKC-6&_mathId=mml38&_user=10&_cdi=5539&_rdoc=8&_handle=V-WA-A-W-WU-MsSAYVW-UUA-U-AAZCWBCWVC-AAZWYAZUVC-VWWEADBV-WU-U&_acct=C000050221&_version=1&_userid=10&md5=629f92284f55ab5ad6985267f90483c4" title="Click to view the MathML source">e<sup>+sup>e<sup>−sup>→π<sup>+sup>π<sup>−sup>π<sup>0sup> has been measured in the c.m. energy range 984–1060 MeV with the CMD-2 detector at the VEPP-2M collider. The obtained value of style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4M1TXKC-6&_mathId=mml39&_user=10&_cdi=5539&_rdoc=8&_handle=V-WA-A-W-WU-MsSAYVW-UUA-U-AAZCWBCWVC-AAZWYAZUVC-VWWEADBV-WU-U&_acct=C000050221&_version=1&_userid=10&md5=c7c60020714ca10f165e16317d1d4552" title="Click to view the MathML source">Br(→e<sup>+sup>e<sup>−sup>)Br(→π<sup>+sup>π<sup>−sup>π<sup>0sup>)=(4.51±0.16±0.11)×10<sup>−5sup> is in good agreement with the previous measurements and has the best accuracy. Analysis of the Dalitz plot was performed. The contributions of the dominant style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4M1TXKC-6&_mathId=mml40&_user=10&_cdi=5539&_rdoc=8&_handle=V-WA-A-W-WU-MsSAYVW-UUA-U-AAZCWBCWVC-AAZWYAZUVC-VWWEADBV-WU-U&_acct=C000050221&_version=1&_userid=10&md5=1bdbebffed63f21b8cdf9e712767078d" title="Click to view the MathML source">→ρπ mechanism as well as of a small direct style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TVN-4M1TXKC-6&_mathId=mml41&_user=10&_cdi=5539&_rdoc=8&_handle=V-WA-A-W-WU-MsSAYVW-UUA-U-AAZCWBCWVC-AAZWYAZUVC-VWWEADBV-WU-U&_acct=C000050221&_version=1&_userid=10&md5=991cd3841df8f78d0fbad98a73b5202d" title="Click to view the MathML source">→3π amplitude were determined.