Determination of the number of ψ(3686)events at BESⅢ
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摘要
The numbers of ψ(3686) events accumulated by the BESⅢ detector for the data taken during 2009 and2012 are determined to be(107.0±0.8)×10~6 and(341.1±2.1)×10~6, respectively, by counting inclusive hadronic events,where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of ψ(3686) events for the two data taking periods is(448.1±2.9)×10~6.
The numbers of ψ(3686) events accumulated by the BESⅢ detector for the data taken during 2009 and2012 are determined to be(107.0±0.8)×10~6 and(341.1±2.1)×10~6, respectively, by counting inclusive hadronic events,where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of ψ(3686) events for the two data taking periods is(448.1±2.9)×10~6.
The numbers of ψ(3686) events accumulated by the BESⅢ detector for the data taken during 2009 and2012 are determined to be(107.0±0.8)×10~6 and(341.1±2.1)×10~6, respectively, by counting inclusive hadronic events,where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of ψ(3686) events for the two data taking periods is(448.1±2.9)×10~6.
引文
1 C.Patrignani et al(Particle Data Group),Chin.Phy.C,2016,40:100001
2 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,2013,37:063001
3 M.Ablikim et al(BESIII Collaboration),Nucl.Instrum.Meth.A,2010,614:345
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8 D.J.Lange et al,Nucl.Instrum.Meth.A,462:152(2001);R.G.Ping et al,Chin.Phys.C,32:599(2008)
9 J.C.Chen et al,Phys.Rev.D,70:011102(R)(2005)
10 M.Ablikim et al(BES Collaboration),Phys.Lett.B,677:239(2009)
11 Y.Weng,et al Chin.Phys.C,31:703(2007)
12 M.Ablikim et al(BES Collaboration),Phys.Rev.Lett.,97:121801(2006)
13 M.Ablikim et al(BESIII Collaboration),Phys.Rev.D,90:012001(2014)
14 M.Ablikim et al(BESIII Collaboration),Phys.Lett.B,710:594(2012)
15 N.Berger et al,Chin.Phys.C,34:1779(2010)
2 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,2013,37:063001
3 M.Ablikim et al(BESIII Collaboration),Nucl.Instrum.Meth.A,2010,614:345
4 L.Malter,Phys.Rev.,50(1):48(1936)
5 M.Y.Dong,et al Chin.Phys.C,2016,40:016001
6 S.Agostinelli et al(GEANT4 Collaboration),Nucl.Instrum.Meth.A,2003,506:250;J.Allison et al,IEEE Trans.Nucl.Sci.,53:270(2006)
7 S.Jadach,B.F.L.Ward,and Z.Was,Comput.Phys.Commun.,130:260(2000);S.Jadach,B.F.L.Ward,and Z.Was,Phys.Rev.D,63:113009(2001)
8 D.J.Lange et al,Nucl.Instrum.Meth.A,462:152(2001);R.G.Ping et al,Chin.Phys.C,32:599(2008)
9 J.C.Chen et al,Phys.Rev.D,70:011102(R)(2005)
10 M.Ablikim et al(BES Collaboration),Phys.Lett.B,677:239(2009)
11 Y.Weng,et al Chin.Phys.C,31:703(2007)
12 M.Ablikim et al(BES Collaboration),Phys.Rev.Lett.,97:121801(2006)
13 M.Ablikim et al(BESIII Collaboration),Phys.Rev.D,90:012001(2014)
14 M.Ablikim et al(BESIII Collaboration),Phys.Lett.B,710:594(2012)
15 N.Berger et al,Chin.Phys.C,34:1779(2010)
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