Abstract
The branching fractions of the doubly Cabibbo-suppressed decays D + → K − K + K + , D + → π − π + K + and D s + → π − K + K + are measured using the decays D + → K − π + π + and D s + → K − K + π + as normalisation channels. The measurements are performed using proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb −1 . The results are
ℬ(D+→K−K+K+)ℬ(D+→K−π+π+)=(6.541±0.025±0.042)×10−4,ℬ(D+→π−π+K+)ℬ(D+→K−π+π+)=(5.231±0.009±0.023)×10−3,ℬ(Ds+→π−K+K+)ℬ(Ds+→K−K+π+),=(2.372±0.024±0.025)×10−3,
where the uncertainties are statistical and systematic, respectively. These are the most precise measurements up to date.
ℬ(D+→K−K+K+)ℬ(D+→K−π+π+)=(6.541±0.025±0.042)×10−4,ℬ(D+→π−π+K+)ℬ(D+→K−π+π+)=(5.231±0.009±0.023)×10−3,ℬ(Ds+→π−K+K+)ℬ(Ds+→K−K+π+),=(2.372±0.024±0.025)×10−3,
where the uncertainties are statistical and systematic, respectively. These are the most precise measurements up to date.
Original language | English |
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Article number | 176 |
Number of pages | 24 |
Journal | Journal of High Energy Physics |
Volume | 2019 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2019 |
Externally published | Yes |
Keywords
- Branching fraction
- Charm physics
- Flavor physics
- Hadron-Hadron scattering (experiments)