D0 - Particle Data Group

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Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998) Γ K − π + Γ /Γtotal K − π + Γ /Γtotal K − π + Γ /Γtotal K − π + /Γtotal Hadronic modes modes with a a aa K K or or KKKK KKKK K K Γ19/Γ Γ19/Γ VALUE 0.0385±0.0009 OUR OUR FIT EVTS DOCUMENT ID TECN COMMENT 0.0388±0.0009 OUR OUR AVERAGE 0.0381±0.0015±0.0016 0.0390±0.0009±0.0012 5392 31 ARTUSO 31 BARATE 98 CLE2 97C ALEP e + e− ≈ Υ(4S) From Z decays 0.045 ±0.006 ±0.004 32 ALBRECHT 94 ARG e + e− ≈ Υ(4S) 0.0341±0.0012±0.0028 0.0395±0.0008±0.0017 1173 31 ALBRECHT 4208 94F ARG e + e− ≈ Υ(4S) 31,33 AKERIB 93 CLE2 e + e− 0.0362±0.0034±0.0044 31 DECAMP 91J ALEP ≈ Υ(4S) From Z decays 0.045 ±0.008 ±0.005 0.042 ±0.004 ±0.004 56 930 31 ABACHI ADLER 88 HRS 88C MRK3 e + e− 29 GeV e + e− 3.77 GeV 0.041 ±0.006 263 34 SCHINDLER 81 MRK2 e + e− 3.771 GeV 0.043 ±0.010 130 35 PERUZZI 77 MRK1 e + e− 3.77 GeV 31 ABACHI 88, DECAMP 91J, AKERIB 93, ALBRECHT 94F, BARATE 97C, and AR- TUSO 98 use D∗ (2010) + → D0 π + decays. The π + is both slow and of low pT with respect to the event thrust axis or nearest jet (≈ D∗+ direction). The excess number of such π + ’s over background gives the number of D∗ (2010) + → D0 π + events, and the fraction with D0 → K− π + gives the D0 → K− π + branching fraction. 32 ALBRECHT 94 uses D0 mesons from B0 → D∗+ ℓ− νℓ decays. This is a different set of events than used by ALBRECHT 94F. 33 This AKERIB 93 value includes radiative corrections; without them the value is 0.0391 ± 0.0008 ± 0.0017. 34 SCHINDLER 81 (MARK-2) measures σ(e + e− → ψ(3770)) × branching fraction to be 0.24 ± 0.02 nb. We use the MARK-3 (ADLER 88C) valueofσ=5.8±0.5±0.6nb. 35 PERUZZI 77 (MARK-1) measures σ(e + e− → ψ(3770)) × branching fraction to be 0.25 ± 0.05 nb. We use the MARK-3 (ADLER 88C) valueofσ=5.8±0.5±0.6nb. Γ K 0 π0 /Γ K − π + Γ K 0 π0 /Γ K − π + Γ K 0 π0 /Γ K − π + Γ K 0 π0 /Γ K − π + VALUE EVTS DOCUMENT ID TECN COMMENT 0.55±0.06 OUR FIT FIT Error includes scale factor of 1.1. 1.36±0.23±0.22 119 ANJOS 92B E691 γ Be 80–240 GeV Γ K 0 π0 /Γ K 0 π + π− Γ K 0 π0 /Γ K 0 π + π− Γ K 0 π0 /Γ K 0 π + π− Γ K 0 π0 /Γ K 0 π + π− Γ20/Γ19 Γ20/Γ19 Γ20/Γ19 Γ20/Γ19 Γ20/Γ21 Γ20/Γ21 Γ20/Γ21 Γ20/Γ21 VALUE 0.390±0.031 0.390±0.031 OUR FIT EVTS DOCUMENT ID TECN COMMENT 0.378±0.033 0.378±0.033 OUR AVERAGE 0.44 ±0.02 ±0.05 1942 PROCARIO 93B CLE2 e + e− 10.36–10.7 GeV 0.34 ±0.04 ±0.02 92 36 ALBRECHT 92P ARG e + e− ≈ 10 GeV 0.36 ±0.04 ±0.08 104 KINOSHITA 91 CLEO e + e− ∼ 10.7 GeV 36 This value is calculated from numbers in Table 1 of ALBRECHT 92P. HTTP://PDG.LBL.GOV Page 16 Created: 6/29/1998 12:22
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998) Γ K 0 π + π− Γ /Γtotal K 0 π + π− Γ /Γtotal K 0 π + π− Γ /Γtotal K 0 π + π− /Γtotal Γ21/Γ Γ21/Γ VALUE EVTS DOCUMENT ID TECN COMMENT 0.054 ±0.004 OUR OUR FIT Error includes scale factor of 1.2. 0.055 ±0.005 OUR OUR AVERAGE 0.0503±0.0039±0.0049 284 37 ALBRECHT 94F ARG e + e− ≈ Υ(4S) 0.064 ±0.005 ±0.010 ADLER 87 MRK3 e + e− 3.77 GeV 0.052 ±0.016 32 38 SCHINDLER 81 MRK2 e + e− 3.771 GeV 0.079 ±0.023 28 39 PERUZZI 77 MRK1 e + e− 3.77 GeV 37 See the footnote on the ALBRECHT 94F measurement of Γ(K− π + )/Γtotal for the method used. 38 SCHINDLER 81 (MARK-2) measures σ(e + e− → ψ(3770)) × branching fraction to be 0.30 ± 0.08 nb. We use the MARK-3 (ADLER 88C) valueofσ=5.8±0.5±0.6nb. 39 PERUZZI 77 (MARK-1) measures σ(e + e− → ψ(3770)) × branching fraction to be 0.46 ± 0.12 nb. We use the MARK-3 (ADLER 88C) valueofσ=5.8±0.5±0.6nb. Γ K 0 π + π− /Γ K − π + Γ K 0 π + π− /Γ K − π + Γ K 0 π + π− /Γ K − π + Γ K 0 π + π− /Γ K − π + Γ21/Γ19 Γ21/Γ19 Γ21/Γ19 Γ21/Γ19 VALUE EVTS DOCUMENT ID TECN COMMENT 1.41±0.10 OUR FIT FIT Error includes scale factor of 1.2. 1.65±0.17 OUR AVERAGE AVERAGE 1.61±0.10±0.15 1.7 ±0.8 856 35 FRABETTI AVERY 94J E687 80 SPEC γ Be Eγ =220 GeV γ N → D∗+ 2.8 ±1.0 116 PICCOLO 77 MRK1 e + e− 4.03, 4.41 GeV Γ K 0 ρ0 /Γ K 0 π + π− Γ K 0 ρ0 /Γ K 0 π + π− Γ K 0 ρ0 /Γ K 0 π + π− Γ K 0 ρ0 /Γ K 0 π + π− Γ22/Γ21 Γ22/Γ21 Γ22/Γ21 Γ22/Γ21 VALUE DOCUMENT ID TECN COMMENT 0.223±0.027 0.223±0.027 OUR AVERAGE Error includes scale factor of 1.2. 0.350±0.028±0.067 0.227±0.032±0.009 FRABETTI ALBRECHT 94G E687 93D ARG γ Be, Eγ ≈ 220 GeV e + e−≈ 10 GeV 0.215±0.051±0.037 ANJOS 93 E691 γ Be 90–260 GeV 0.20 ±0.06 ±0.03 0.12 ±0.01 ±0.07 FRABETTI ADLER 92B E687 87 MRK3 γ Be Eγ = 221 GeV e + e− 3.77 GeV Γ K 0 f0(980) /Γ K 0 π + π− Γ K 0 f0(980) /Γ K 0 π + π− Γ K 0 f0(980) /Γ K 0 π + π− Γ K 0 f0(980) /Γ K 0 π + π− Unseen decay modes of the f 0 (980) are included. Γ73/Γ21 Γ73/Γ21 Γ73/Γ21 Γ73/Γ21 VALUE 0.105±0.029 0.105±0.029 OUR AVERAGE AVERAGE DOCUMENT ID TECN COMMENT 0.131±0.031±0.034 0.088±0.035±0.012 FRABETTI ALBRECHT 94G E687 93D ARG γ Be, Eγ ≈ 220 GeV e + e−≈ 10 GeV Γ K 0 f2(1270) /Γ K 0 π + π− Γ K 0 f2(1270) /Γ K 0 π + π− Γ K 0 f2(1270) /Γ K 0 π + π− Γ K 0 f2(1270) /Γ K 0 π + π− Unseen decay modes of the f 2 (1270) are included. Γ77/Γ21 Γ77/Γ21 Γ77/Γ21 Γ77/Γ21 VALUE 0.076±0.028 OUR OUR OUR AVERAGE AVERAGE DOCUMENT ID TECN COMMENT 0.065±0.025±0.030 0.088±0.037±0.014 FRABETTI ALBRECHT 94G E687 93D ARG γ Be, Eγ ≈ 220 GeV e + e−≈ 10 GeV Γ K 0 f0(1370) /Γ K 0 π + π− Γ K 0 f0(1370) /Γ K 0 π + π− Γ K 0 f0(1370) /Γ K 0 π + π− Γ K 0 f0(1370) /Γ K 0 π + π− Unseen decay modes of the f 0 (1370) are included. Γ79/Γ21 Γ79/Γ21 Γ79/Γ21 Γ79/Γ21 VALUE DOCUMENT ID TECN COMMENT 0.13 ±0.04 ±0.04 OUR AVERAGE AVERAGE 0.123±0.035±0.049 0.131±0.045±0.021 FRABETTI ALBRECHT 94G E687 93D ARG γ Be, Eγ ≈ 220 GeV e + e−≈ 10 GeV HTTP://PDG.LBL.GOV Page 17 Created: 6/29/1998 12:22
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