Hi,
I am bit confused by these numbers.
Let' take the resonant ones.
In the DECAY.DEC we have (B0 for instance):
0.000180 pi+ e- anti-nu_e PHOTOS ISGW2;
0.000260 rho+ e- anti-nu_e PHOTOS ISGW2;
0.000165 a_1+ e- anti-nu_e PHOTOS ISGW2;
0.000102 b_1+ e- anti-nu_e PHOTOS ISGW2;
0.000014 a_0+ e- anti-nu_e PHOTOS ISGW2;
0.000014 a_2+ e- anti-nu_e PHOTOS ISGW2;
pi and rho cannot go in kaons. 60% is already gone.
This implies that a_1,b_1, ecc.. have to go in the 25% of the cases in
kaons.
I see:
Decay a_1+
0.4920 rho0 pi+ VVS_PWAVE 1.0 0.0 0.0 0.0 0.0 0.0;
0.5080 rho+ pi0 VVS_PWAVE 1.0 0.0 0.0 0.0 0.0 0.0;
Decay b_1+
0.9984 omega pi+ VVS_PWAVE 1.0 0.0 0.0 0.0 0.0 0.0;
0.0016 pi+ gamma VSP_PWAVE;
Decay a_0+
0.9000 eta pi+ PHSP;
0.1000 anti-K0 K+ PHSP;
Decay a_2+
0.3500 rho0 pi+ TVS_PWAVE 0.0 0.0 1.0 0.0 0.0 0.0;
0.3500 rho+ pi0 TVS_PWAVE 0.0 0.0 1.0 0.0 0.0 0.0;
0.1440 eta pi+ TSS;
0.1050 omega pi+ pi0 PHSP;
0.0480 anti-K0 K+ TSS;
0.0030 pi+ gamma PHSP;
Only a_0 and a_2 can contribute.
Then it should be 10%*2% + 5%*2% = 0.3%
Similar argument for the B+.
Then, where does that 10% come from? What am I missing here?
Daniele
>
> Hoi,
>
> the determination of this involved a bit more than calculating the BF
> in DECAY.DEC, since I was interested also in the JETSET ssbar popping
> rates for the nonresonant MC.
>
> In http://www.slac.stanford.edu/~ursl/talks/030603/ssbar.eps.gz you
> can find the p* distribution of el and mu in all b2u events (top), in
> b2u events without strangeness (middle) and in b2u events with
> strangeness (bottom). The left column shows resonant production, the
> right column non-resonant.
>
> In resonant (non-resonant) b2u events the fraction of events with
> strangeness is 0.120+/-0.004 (0.162+/-0.003). The error is statistical.
>
> Cheers,
> --U.
>
>
> PS: The different shapes of these spectra ...
>
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