Luminosity measurements for the R scan experiment at BESIII
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摘要
By analyzing the large-angle Bhabha scattering events e~+e~-→(γ)e~+e~-and diphoton events e~+e~-→(γ)γγ for the data sets collected at center-of-mass(c.m.) energies between 2.2324 and 4.5900 Ge V(131 energy points in total) with the upgraded Beijing Spectrometer(BESIII) at the Beijing Electron-Positron Collider(BEPCII), the integrated luminosities have been measured at the different c.m. energies, individually. The results are important inputs for the R value and J/ψ resonance parameter measurements.
By analyzing the large-angle Bhabha scattering events e~+e~-→(γ)e~+e~-and diphoton events e~+e~-→(γ)γγ for the data sets collected at center-of-mass(c.m.) energies between 2.2324 and 4.5900 Ge V(131 energy points in total) with the upgraded Beijing Spectrometer(BESIII) at the Beijing Electron-Positron Collider(BEPCII), the integrated luminosities have been measured at the different c.m. energies, individually. The results are important inputs for the R value and J/ψ resonance parameter measurements.
By analyzing the large-angle Bhabha scattering events e~+e~-→(γ)e~+e~-and diphoton events e~+e~-→(γ)γγ for the data sets collected at center-of-mass(c.m.) energies between 2.2324 and 4.5900 Ge V(131 energy points in total) with the upgraded Beijing Spectrometer(BESIII) at the Beijing Electron-Positron Collider(BEPCII), the integrated luminosities have been measured at the different c.m. energies, individually. The results are important inputs for the R value and J/ψ resonance parameter measurements.
引文
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9 B.Andersson,The Lund Model(Cambridge University Press,1998)
10 S.Nova,A.Olchevski,and T.Todorov(DELPHI Collaboration),DELPHI 90-35 PROG,152(1990)
11 N.Berger,K.Zhu et al,Chin.Phys.C,34:1779(2010)
12 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,37:123001(2013)
13 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,39:093001(2015)
2 M.Davier et al,Eur.Phys.J.C,71:1515(2011)
3 F.Jegerlehner,ar Xiv:1511.04473v2[hep-ph](2015)
4 M.Ablikim et al(BESIII Collaboration),Nucl.Instrum.Methods A,614:345(2010)
5 G.Balossini et al,Nucl.Phys.B,758:227(2006)
6 G.Balossini et al,Phys.Lett.B,663:209(2008)
7 C.M.Carloni Calame et al,Nucl.Phys.Proc.Suppl.,131:48(2004)
8 S.Jadach,B.F.L.Ward,and Z.Was,Comp.Phys.Commun.,130 :260(2000);Phys.Rev.D,63:113009(2001)
9 B.Andersson,The Lund Model(Cambridge University Press,1998)
10 S.Nova,A.Olchevski,and T.Todorov(DELPHI Collaboration),DELPHI 90-35 PROG,152(1990)
11 N.Berger,K.Zhu et al,Chin.Phys.C,34:1779(2010)
12 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,37:123001(2013)
13 M.Ablikim et al(BESIII Collaboration),Chin.Phys.C,39:093001(2015)
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