Measurement of the absolute branching fraction of D~+→K~0e~+v_e via K~0→π~0π~0
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摘要
By analyzing 2.93 fb~(~(-1)) data collected at the center-of-mass energy s~(1/2)=3.773 GeV with the BESⅢdetector,we measure the absolute branching fraction of the semileptonic decay D~+→K~0e+v_e to be B(D~+→K~0e~+v_e) =(8.59 ±0.14 ±0.21)%using K~0→K_S~0→π~0π~0,where the first uncertainty is statistical and the second systematic.Our result is consistent with previous measurements within uncertainties..
By analyzing 2.93 fb~(~(-1)) data collected at the center-of-mass energy s~(1/2)=3.773 GeV with the BESⅢdetector,we measure the absolute branching fraction of the semileptonic decay D~+→K~0e+v_e to be B(D~+→K~0e~+v_e) =(8.59 ±0.14 ±0.21)%using K~0→K_S~0→π~0π~0,where the first uncertainty is statistical and the second systematic.Our result is consistent with previous measurements within uncertainties..
By analyzing 2.93 fb~(~(-1)) data collected at the center-of-mass energy s~(1/2)=3.773 GeV with the BESⅢdetector,we measure the absolute branching fraction of the semileptonic decay D~+→K~0e+v_e to be B(D~+→K~0e~+v_e) =(8.59 ±0.14 ±0.21)%using K~0→K_S~0→π~0π~0,where the first uncertainty is statistical and the second systematic.Our result is consistent with previous measurements within uncertainties..
引文
1 Y.Fang,G.Rong,H.L.Ma,and J.Y.Zhao,Eur.Phys.J.C,75:10(2015)
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21 D.Becirevic and A.B.Kaidalov,Phys.Lett.B,478:417(2000)
22 J.Adler et al(MARKⅢCollaboration),Phys.Rev.Lett.,62,1821(1989)
23 K.T.Chao and Y.F.Wang,Physics at BESⅢ,p.38-40
24 K.A.Olive et al(Particle Data Group),Chin.Phys.C,38:090001(2014)
25 X.Ma,Z.P.Mao,J.M.Bian et al,Chin.Phys.C,32(9):744(2008)
26 H.Albrecht et al(ARGUS Collaboration),Phys.Lett.B,241:278(1990)
2 Z.Bai et al(MARKⅢCollaboration),Phys.Rev.Lett.,66:1011(1991)
3 M.Ablikim et al(BES Collaboration),Phys.Lett.B,608:24(2005)
4 D.Besson et al(CLEO Collaboration),Phys.Rev.D,80:032005(2009)
5 J.Y.Ge et al(CLEO Collaboration),Phys.Rev.D,79:052010(2009)
6 M.Ablikim et al(BESⅢCollaboration),Study of dynamics of D~+→K~0(π+π~-)e~+v_e and D~+→π~0e~+v_e decays,publication in preparation
7 M.Ablikim et al(BESⅢCollaboration),Phys.Rev.D,92:112008(2015)
8 M.Ablikim et al(BESⅢCollaboration),Chin.Phys.C,37,123001(2013)
9 M.Ablikim et al(BESⅢCollaboration),Phys.Lett.B,753:629(2016)
10 M.Ablikim et al(BESⅢCollaboration),Nucl.Instrum.Methods A,614:345(2010)
11 M.Ablikim et al(BESⅢCollaboration),Phys.Rev.D,92:072012(2015)
12 S.Agostinelli et al(GEANT4 Collaboration),Nucl.Instrum.Methods A,506:250(2003)
13 S.Jadach,B.F.L.Ward,and Z.Was,Comp.Phys.Commu.,130:260(2000)
14 S.Jadach,B.F.L.Ward,and Z.Was,Phys.Rev.D,63:113009(2001)
15 E.Barberio and Z.Was,Comput.Phys.Commun.,79:291(1994)
16 E.A.Kureav and V.S.Fadin,Sov.J.Nucl.Phys.,41:466(1985)[Yad.Fiz.,41:733(1985)]
17 D.J.Lange,Nucl.Instrum.Methods A,462:152(2001)
18 R.G.Ping,Chin.Phys.C,32:599(2008)
19 K.Nakamura et al(Particle Data Group),J.Phys.G,37:075021(2010)and 2011 partial update for the 2012 edition
20 J.C.Chen,G.S.Huang,X.R.Qi et al,Phys.Rev.D,62:034003(2000)
21 D.Becirevic and A.B.Kaidalov,Phys.Lett.B,478:417(2000)
22 J.Adler et al(MARKⅢCollaboration),Phys.Rev.Lett.,62,1821(1989)
23 K.T.Chao and Y.F.Wang,Physics at BESⅢ,p.38-40
24 K.A.Olive et al(Particle Data Group),Chin.Phys.C,38:090001(2014)
25 X.Ma,Z.P.Mao,J.M.Bian et al,Chin.Phys.C,32(9):744(2008)
26 H.Albrecht et al(ARGUS Collaboration),Phys.Lett.B,241:278(1990)