First observation of the decay Lb->Dsp

dc.rights.license	CC-BY-NC-ND
dc.contributor.advisor	Tuning, N.
dc.contributor.advisor	Mischke, A.
dc.contributor.advisor	Grelli, A.G.
dc.contributor.author	Tervoert, M.J.
dc.date.accessioned	2018-07-18T17:01:04Z
dc.date.available	2018-07-18T17:01:04Z
dc.date.issued	2017
dc.identifier.uri	https://studenttheses.uu.nl/handle/20.500.12932/29303
dc.description.abstract	We present the first observation of the decay Lb->Dsp with a significance of 20sigma using proton-proton data collected with the Lhcb at sqrt(s)=7 TeV, sqrt(s)=8 TeV, and sqrt(s)=13 TeV, corresponding to a total integrated luminosity of 4.9 fb^(-1). Furthermore, considering the normalisation decay Lb->LcPi, we report a branching fraction of BF(Lb->Dsp)=(10.7+/-1.2)x10^-6 (excluding systematic uncertainties). This result could help understanding the long standing discrepancy on the value of \|Vub\|.
dc.description.sponsorship	Utrecht University
dc.format.extent	6243875
dc.format.mimetype	application/pdf
dc.language.iso	en
dc.title	First observation of the decay Lb->Dsp
dc.type.content	Master Thesis
dc.rights.accessrights	Open Access
dc.subject.keywords	Particle Physics; LHCb; Branching Fraction
dc.subject.courseuu	Experimental Physics