Study of the [Formula: see text] and [Formula: see text] decays with the ATLAS detector

The European Physical Journal. C, Particles and Fields
G AadATLAS Collaboration

Abstract

The decays [Formula: see text] and [Formula: see text] are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb[Formula: see text] of pp collisions collected at centre-of-mass energies [Formula: see text] TeV and 8 TeV, respectively. Signal candidates are identified through [Formula: see text] and [Formula: see text] decays. With a two-dimensional likelihood fit involving the [Formula: see text] reconstructed invariant mass and an angle between the [Formula: see text] and [Formula: see text] candidate momenta in the muon pair rest frame, the yields of [Formula: see text] and [Formula: see text], and the transverse polarisation fraction in [Formula: see text] decay are measured. The transverse polarisation fraction is determined to be [Formula: see text], and the derived ratio of the branching fractions of the two modes is [Formula: see text], where the first error is statistical and the second is systematic. Finally, a sample of [Formula: see text] decays is used to derive the ratios of branching fractions [Formula: see text] and [Formula: see text], where the third error corresponds to the uncertainty of the branching fraction of [Formula: see text] decay. The a...Continue Reading

References

Jun 4, 2008·Physical Review Letters·J P AlexanderUNKNOWN CLEO Collaboration
Dec 6, 2014·Physical Review Letters·G AadUNKNOWN ATLAS Collaboration

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Citations

Nov 15, 2007·BMC Systems Biology·Kirill Evlampiev, Hervé Isambert
Feb 15, 2005·BMC Bioinformatics·Harold J DrabkinJudith A Blake
Apr 2, 2019·Chemical & Pharmaceutical Bulletin·Hongrui TaoHua Zhang
Jul 6, 2016·Scientific Reports·Jairo PatiñoAlain Vanderpoorten
May 30, 2017·Homeopathy : the Journal of the Faculty of Homeopathy·Afonso Miguel CavacoSevgi Şar
May 8, 2018·Journal of the American Society for Mass Spectrometry·Huong T H NguyenFrantišek Tureček
Mar 27, 2019·Journal of the American Society for Mass Spectrometry·Michael J van StipdonkArpad Somogyi
Jun 20, 2018·BMC Psychiatry·Jörn Conell, Ute Lewitzka
Jul 30, 2016·The European Physical Journal. C, Particles and Fields·A AndronicP Zhuang
Sep 24, 2021··Aidos IssadykovKanat Nurlan

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Software Mentioned

Geant
ATLAS
Pythia
EvtGen

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