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Title: The Farley‐Buneman Spectrum in 2‐D and 3‐D Particle‐in‐Cell Simulations
Award ID(s):
1755350
PAR ID:
10176879
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
Journal of Geophysical Research: Space Physics
Volume:
125
Issue:
1
ISSN:
2169-9380
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  1. A<sc>bstract</sc> A time-dependent, flavour-tagged measurement ofCPviolation is performed withB0→ D+Dand$$ {B}_s^0 $$ B s 0 →$$ {D}_s^{+}{D}_s^{-} $$ D s + D s decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 6 fb−1. InB0→ D+Ddecays theCP-violation parameters are measured to be$$ {\displaystyle \begin{array}{c}{S}_{D^{+}{D}^{-}}=-0.552\pm 0.100\left(\textrm{stat}\right)\pm 0.010\left(\textrm{syst}\right),\\ {}{C}_{D^{+}{D}^{-}}=0.128\pm 0.103\left(\textrm{stat}\right)\pm 0.010\left(\textrm{syst}\right).\end{array}} $$ S D + D = 0.552 ± 0.100 stat ± 0.010 syst , C D + D = 0.128 ± 0.103 stat ± 0.010 syst . In$$ {B}_s^0 $$ B s 0 →$$ {D}_s^{+}{D}_s^{-} $$ D s + D s decays theCP-violating parameter formulation in terms ofϕsand|λ|results in$$ {\displaystyle \begin{array}{c}{\phi}_s=-0.086\pm 0.106\left(\textrm{stat}\right)\pm 0.028\left(\textrm{syst}\right)\textrm{rad},\\ {}\mid {\lambda}_{D_s^{+}{D}_s^{-}}\mid =1.145\pm 0.126\left(\textrm{stat}\right)\pm 0.031\left(\textrm{syst}\right).\end{array}} $$ ϕ s = 0.086 ± 0.106 stat ± 0.028 syst rad , λ D s + D s = 1.145 ± 0.126 stat ± 0.031 syst . These results represent the most precise single measurement of theCP-violation parameters in their respective channels. For the first time in a single measurement,CPsymmetry is observed to be violated inB0→ D+Ddecays with a significance exceeding six standard deviations. 
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  2. null (Ed.)