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Measurement of the CKM angle γ using B± → DK± with D → K0Sπ+π−, K0SK+K− decays

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Abstract: A binned Dalitz plot analysis ofB±→DK±decays, withD→K0Sπ+π−andD→K0SK+K−, is performed to measure the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angleγ. The analysis exploits asample of proton-proton collision data corresponding to...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Falabella, A. (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Grünberg, Oliver (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Heß, Miriam (Author) , Jäger, Andreas (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Marian (Author) , Stahl, Sascha (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: October 16, 2014
In: Journal of high energy physics
Year: 2014, Issue: 10
ISSN:1029-8479
DOI:10.1007/JHEP10(2014)097
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP10(2014)097
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Author Notes:The LCHb Collaboration
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Summary:Abstract: A binned Dalitz plot analysis ofB±→DK±decays, withD→K0Sπ+π−andD→K0SK+K−, is performed to measure the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angleγ. The analysis exploits asample of proton-proton collision data corresponding to 3.0 fb−1collected by the LHCb experiment. Measurements from CLEO-c of the variation of the strong-interaction phaseof the D decay over the Dalitz plot are used as inputs. The values of the parameters arefound to be x+= (−7.7±2.4±1.0±0.4)×10−2,x−= (2.5±2.5±1.0±0.5)×10−2,y+= (−2.2±2.5±0.4±1.0)×10−2, andy−= (7.5±2.9±0.5±1.4)×10−2. The first,second, and third uncertainties are the statistical, the experimental systematic, and thatassociated with the precision of the strong-phase parameters. These are the most precisemeasurements of these observables and correspond toγ= (62+15−14)◦, with a second solution at γ→γ+ 180◦, and rB= 0.080+0.019−0.021, wherer B is the ratio between the suppressed and favoured B decay amplitudes.
Item Description:Im Titel sind "+" "-" und "0" in K0Sπ+π−, K0SK+K− hochgestellt
Im Titel ist "s" in K0Sπ+π−, K0SK+K− tiefgestellt
The LCHb Collaboration: R. Aaij, S. Bachmann, A. Bien, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, A. Falabella, C. Färber, E. Gersabeck, L. Grillo, O. Grünberg, X. Han, S. Hansmann-Menzemer, A. Jaeger, M. Kolpin, K. Kreplin, G. Krocker, B. Leverington, J. Marks, M. Meissner, M. Neuner, T. Nikodem, P. Seyfert, M. Stahl, S. Stahl, U. Uwer, M. Vesterinen, C. Voss, R. Waldi, S. Wandernoth, D. Wiedner, A. Zhelezov und weitere 676
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Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP10(2014)097

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