Publikation: Zeitschriftenartikel

Measurements of the branching fractions of [lambda]+cp+, [lambda]+cpKK+, and [lambda]+cpK+

Grunddaten
Abstract
Autoren
Einrichtung

Grunddaten

Titel	Measurements of the branching fractions of [lambda]+cp+, [lambda]+cpKK+, and [lambda]+cpK+
Erscheinungsjahr	2018
Heft-Nr.	3
Jahr	2018
Publikationsform	Elektronische Ressource
Publikationsart	Zeitschriftenartikel
Sprache	Englisch
DOI	10.1007/JHEP03(2018)043
Letzte Änderung	05.01.2021 06:05:51
Bearbeitungsstatus	durch UB Rostock abschließend validiert
Dauerhafte URL	http://purl.uni-rostock.de/fodb/pub/64680
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Abstract

The ratios of the branching fractions of the decays c + p+, c + pKK+, and c + pK+ with respect to the Cabibbo-favoured c + pK+ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb1: B(+cp+)B(+cpK+)=(7.44±0.08±0.18)%,B(+cpKK+)B(+cpK+)=(1.70±0.03±0.03)%B(+cpK+)B(+cpK+)=(0.165±0.015±0.005)%,B(c+p+)B(c+pK+)=(7.44±0.08±0.18)%,B(c+pKK+)B(c+pK+)=(1.70±0.03±0.03)%B(c+pK+)B(c+pK+)=(0.165±0.015±0.005)%, \begin{array}{l}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{\pi}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(7.44\pm 0.08\pm 0.18\right)\%,\hfill \\ {}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{K}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(1.70\pm 0.03\pm 0.03\right)\%\hfill \\ {}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{K}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(0.165\pm 0.015\pm 0.005\right)\%,\hfill \end{array} where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world-average value for B(+cpK+)B(c+pK+) \mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right) , the corresponding branching fractions are B(+cp+)=(4.72±0.05±0.11±0.25)×103,B(+cpKK+)=(1.08±0.02±0.02±0.06)×103,B(+cpK+)=(1.04±0.09±0.03±0.05)×104,B(c+p+)=(4.72±0.05±0.11±0.25)×103,B(c+pKK+)=(1.08±0.02±0.02±0.06)×103,B(c+pK+)=(1.04±0.09±0.03±0.05)×104, \begin{array}{l}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{\pi}^{+}\right)=\left(4.72\pm 0.05\pm 0.11\pm 0.25\right)\times {10}^{-3},\hfill \\ {}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{K}^{+}\right)=\left(1.08\pm 0.02\pm 0.02\pm 0.06\right)\times {10}^{-3},\hfill \\ {}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{K}^{+}\right)=\left(1.04\pm 0.09\pm 0.03\pm 0.05\right)\times {10}^{-4},\hfill \end{array} where the final uncertainty is due to B(+cpK+)B(c+pK+) \mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right) . Open image in new window

Autoren

Aaij, Roel
D'Argent, Philippe
Bachmann, Sebastian
Berninghoff, Daniel
Braun, Svende
Comerma-Montells, Albert
De Cian, Michel
Dziewiecki, Michal
Esen, Sevda
Gerick, David
Grabowski, Jascha
Grünberg, Oliver
Han, Xiaoxue
Hansmann-Menzemer, Stephanie
Heß, Miriam
Kecke, Matthieu
Khanji, Basem
Kolpin, Michael
Kopecná, Renata
Leverington, Blake
Marks, Jörg
Meinert, Nis
Mitzel, Dominik
Neubert, Sebastian
Neuner, Max
Nikodem, Thomas
Piucci, Alessio
Stahl, Marian
Stemmle, Simon
Uwer, Ulrich
Viemann, Harald
Waldi, Roland
Zhelezov, Alexey
van Tilburg, Jeroen

Einrichtung

MNF/Institut für Physik (IfPH)