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	Author	LHCb Collaboration (Aaij, R. et al); Jaimes Elles, S.J.; Jashal, B.K.; Martinez-Vidal, F.; Oyanguren, A.; Rebollo De Miguel, M.; Sanderswood, I., Zhuo, J.
	Title	Search for B+c → π+μ+μ- decays and measurement of the branching fraction ratio B(B+c → ψ(2S)π+)/B(B+c< /i> → J/ψπ+)			Type	Journal Article
	Year	2024	Publication	European Physical Journal C	Abbreviated Journal	Eur. Phys. J. C
	Volume	84	Issue	5	Pages	468 - 17pp
	Keywords
	Abstract	The first search for nonresonant B-c(+) -> pi(+)mu(+)mu(-) decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb(-1). No evidence for an excess of signal events over background is observed and an upper limit is set on the branching fraction ratio B(B-c(+) -> pi(+)mu(+)mu(-))/B(B-c(+) -> J/psi pi(+)) < 2.1x10(-4) at 90% confidence level. Additionally, an updated measurement of the ratio of the B-c(+) -> psi(2S)pi(+) and B-c(+) -> J/psi pi(+) branching fractions is reported. The ratio B(B-c(+) -> psi(2S)pi+)/B(B-c(+) -> J/psi pi(+)) is measured to be 0.254 +/- 0.018 +/- 0.003 +/- 0.005, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the leptonic J/psi and psi(2S) decays. This measurement is the most precise to date and is consistent with previous LHCb results.
	Address	[Barbetti, M.; Egede, U.; Fujii, Y.; Hadavizadeh, T.; Henderson, R. D. L.; Lane, J. J.; Liu, F. L.; Monk, M.; Song, R.; Walton, E. J.; Ward, J. A.] Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia, Email: fernando.abudinen@cern.ch
	Corporate Author				Thesis
	Publisher	Springer	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1434-6044	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001281883300001			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	6475
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