scholarly journals Rare charm c→uνν¯ dineutrino null tests for e+e− machines

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Rigo Bause ◽  
Hector Gisbert ◽  
Marcel Golz ◽  
Gudrun Hiller
Keyword(s):  
Rare Charm

Chapter 27 Rare and Forbidden Charm Decays

2009 ◽  
Vol 24 (supp01) ◽  
pp. 673-683
Author(s):  
Hai-Bo Li ◽  
Ya-Dong Yang
Keyword(s):  
New Physics ◽  
Charm Decays ◽  
Rare Charm

The following sections are included: Introduction Rare Charm Decays in the SM New Physics Analysis Summary

scholarly journals Searches for rare charm decays at LHCb

2017 ◽  
Author(s):  
Dominik Stefan Mitzel ◽  
Keyword(s):  
Charm Decays ◽  
Rare Charm

scholarly journals Impact of $$b \rightarrow s \ell \ell $$ anomalies on rare charm decays in non-universal $$Z'$$ models

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
Ashutosh Kumar Alok ◽  
Neetu Raj Singh Chundawat ◽  
Dinesh Kumar
Keyword(s):  
New Physics ◽  
Tree Level ◽  
Long Distance ◽  
Charm Decays ◽  
Decay Modes ◽  
The Standard Model ◽  
Quark Level ◽  
Level Transition ◽  
The Impact ◽  
Rare Charm

AbstractIn this work, we study the impact of $$b \rightarrow s \ell \ell $$ b → s ℓ ℓ , $$B_s - \bar{B_s}$$ B s - B s ¯ mixing and neutrino trident measurements on observables in decays induced by $$c \rightarrow u $$ c → u transition in the context of a non-universal $$Z'$$ Z ′ model which generates $$C^{\mathrm{NP}}_{9} <0$$ C 9 NP < 0 and $$C^{\mathrm{NP}}_9 = - \,C^{\mathrm{NP}}_{10} $$ C 9 NP = - C 10 NP new physics scenarios at the tree level. We inspect the effects on $$D^0 \rightarrow \pi ^0 \nu {\bar{\nu }}$$ D 0 → π 0 ν ν ¯ , $$D^+ \rightarrow \pi ^+ \nu {\bar{\nu }}$$ D + → π + ν ν ¯ and $$B_c \rightarrow B^+ \nu {\bar{\nu }} $$ B c → B + ν ν ¯ decays which are induced by the quark level transition $$c \rightarrow u \nu {\bar{\nu }}$$ c → u ν ν ¯ . The fact that the branching ratios of these decays are negligible in the standard model (SM) and the long distance effects are relatively smaller in comparison to their charged dileptons counterparts, they are considered to provide genuine null-tests of SM. Therefore the observation of these modes at the level of current as well as planned experimental sensitivities would imply unambiguous signature of new physics. Using the constraints on $$Z'$$ Z ′ couplings coming from a combined fit to $$b \rightarrow s \ell \ell $$ b → s ℓ ℓ , $$\varDelta M_s$$ Δ M s and neutrino trident data, we find that any meaningful enhancement over the SM value is ruled out in the considered framework. The same is true for $$D - {\bar{D}}$$ D - D ¯ mixing observable $$\varDelta M_D$$ Δ M D along with $$D^0 \rightarrow \mu ^+ \mu ^-$$ D 0 → μ + μ - and $$D^+ \rightarrow \pi ^+ \mu ^+ \mu ^-$$ D + → π + μ + μ - decay modes which are induced through $$c \rightarrow u \mu ^+ \mu ^-$$ c → u μ + μ - transition.

scholarly journals Manifestations of warped extra dimension in rare charm decays and asymmetries

2014 ◽  
Vol 90 (1) ◽  
Author(s):  
Ayan Paul ◽  
Alejandro de la Puente ◽  
Ikaros I. Bigi
Keyword(s):  
Extra Dimension ◽  
Charm Decays ◽  
Warped Extra Dimension ◽  
Rare Charm
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