Measurement of integrated luminosity and center-of-mass energy of data taken by BESⅢ at s~(1/2)=2.125 GeV
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摘要
To study the nature of the state Y(2175),a dedicated data set of e~ + e~-collision data was collected at the center-of-mass energy of 2.125 GeV with the BESⅢ detector at the BEPCⅡ collider.By analyzing large-angle Bhabha scattering events,the integrated luminosity of this data set is determined to be 108.49±0.02±0.85 pb~(-1),where the first uncertainty is statistical and the second one is systematic.In addition,the center-of-mass energy of the data set is determined with radiative dimuon events to be 2126.55±0.03±0.85 MeV,where the first uncertainty is statistical and the second one is systematic.
To study the nature of the state Y(2175),a dedicated data set of e~ + e~-collision data was collected at the center-of-mass energy of 2.125 GeV with the BESⅢ detector at the BEPCⅡ collider.By analyzing large-angle Bhabha scattering events,the integrated luminosity of this data set is determined to be 108.49±0.02±0.85 pb~(-1),where the first uncertainty is statistical and the second one is systematic.In addition,the center-of-mass energy of the data set is determined with radiative dimuon events to be 2126.55±0.03±0.85 MeV,where the first uncertainty is statistical and the second one is systematic.
To study the nature of the state Y(2175),a dedicated data set of e~ + e~-collision data was collected at the center-of-mass energy of 2.125 GeV with the BESⅢ detector at the BEPCⅡ collider.By analyzing large-angle Bhabha scattering events,the integrated luminosity of this data set is determined to be 108.49±0.02±0.85 pb~(-1),where the first uncertainty is statistical and the second one is systematic.In addition,the center-of-mass energy of the data set is determined with radiative dimuon events to be 2126.55±0.03±0.85 MeV,where the first uncertainty is statistical and the second one is systematic.
引文
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23 S.Das,ar Xiv:1603.08591[hep-ex]
2 B.Aubert et al(Ba Bar Collaboration),Phys.Rev.D,74:091103(2006)
3 B.Aubert et al(Ba Bar Collaboration),Phys.Rev.D,76:012008(2007)
4 M.Ablikim et al(BES Collaboration),Phys.Rev.Lett.,100:102003(2008)
5 C.P.Shen et al(Belle Collaboration),Phys.Rev.D,80:031101(2009)
6 M.Ablikim et al(BESIII Collaboration),Phys.Rev.D,91:052017(2015)
7 G.J.Ding and M.L.Yan,Phys.Lett.B,650:390(2007)
8 G.J.Ding and M.L.Yan,Phys.Lett.B,657:49(2007)
9 Z.G.Wang,Nucl.Phys.A,791:106(2007)
10 E.Klempt and A.Zaitsev,Phys.Rep.,454:1(2007)
11 M.Ablikim et al(BESIII Collaboration),Nucl.Instrum.Methods Phys.Res.,Sect.A,614:345(2010)
12 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,40:063001(2016)
13 S.Agostinelli et al(GEANT4 Collaboration),Nucl.Instrum.Methods Phys.Res.,Sect A,506:250(2003)
14 J.Allison et al,IEEE Trans.Nucl.Sci.,53:270(2006)
15 G.Balossini,C.M.Carloni Calame,G.Montagna,O.Nicrossini and F.Piccinini,Nucl.Phys.B,758:227(2006)
16 R.G.Ping,Chin.Phys.C,32:599(2008)
17 D.J.Lange,Nucl.Meth.A,462:152(2001)
18 B.Andersson,The Lund Model,(Cambridge University Press,1998)
19 B.Andersson,H.Hu,hep-ph/9910285(1999)
20 N.Berger,K.Zhu et al,Chin.Phys.C,34:1779(2010)
21 M.Ablikim et al(BESIII Collabroation),Chin.Phys.C,41:063001(2017)
22 T.Skwarnicki et al,Report No.DESY F31-86-02(1986)(unpublished)
23 S.Das,ar Xiv:1603.08591[hep-ex]