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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	Measurements of the branching fraction ratio B(φ → μ+μ-)/B(φ → e+e-) with charm meson decays			Type	Journal Article
	Year	2024	Publication	Journal of High Energy Physics	Abbreviated Journal	J. High Energy Phys.
	Volume	05	Issue	5	Pages	293 - 24pp
	Keywords	B Physics; Branching fraction; Charm Physics; Hadron-Hadron Scattering
	Abstract	Measurements of the branching fraction ratio B(phi -> mu(+)mu(-))/B(phi -> e(+)e(-)) with D-s(+) -> pi(+)phi and D+ -> pi(+)phi decays, denoted R-phi pi(s) and R-phi pi(d), are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb(-1) of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ -> K+ J/psi(-> e(+) e(-)) and B+ -> K+ J/psi(-> mu(+)mu(-)) decay modes. The combination of the results yields R-phi pi = 1.022 +/- 0.012 (stat) +/- 0.048 (syst). The result is compatible with previous measurements of the phi -> l(+) l(-) branching fractions and predictions based on the Standard Model.
	Address	[Egede, U.; Fujii, Y.; Hadavizadeh, T.; Henderson, R. D. L.; Lane, J. J.; Monk, M.; Song, R.; Walton, E. J.; Ward, J. A.] Monash Univ, Sch Phys & Astron, Melbourne, Australia, Email: dlancier@hep.phy.cam.ac.uk
	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	1029-8479	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001270450100001			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	6289
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