LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Brossa Gonzalo, A., Costa Sobral, C. M., Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Lupton, Oliver, Mathad, A., Millard, E., Poluektov, Anton and Wicht, Jean). (2019) Measurement of the branching fractions of the decays D+→K−K+K+, D+→π−π+K+ and D+s→π−K+K+. Journal of High Energy Physics, 2019 . 176. doi:10.1007/JHEP03(2019)176 ISSN 1029-8479.

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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(D+s→ π−K+K+)B(D+s→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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Journal of High Energy Physics
Publisher:	Springer
ISSN:	1029-8479
Official Date:	27 March 2019
Dates:	Date Event 27 March 2019 Published 5 March 2019 Accepted
Volume:	2019
Article Number:	176
DOI:	10.1007/JHEP03(2019)176
Institution:	University of Warwick
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Related URLs:	Publisher Other Repository
Open Access Version:	ArXiv
Contributors:	Contribution Name Contributor ID Research Group LHCb Collaboration, UNSPECIFIED

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