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24 papers · 2 filters
High-precision search for dark photon dark matter with the Parkes Pulsar Timing Array
Xiao Xue, Zi-Qing Xia, Xingjiang Zhu +20
The nature of dark matter remains obscure in spite of decades of experimental efforts. The mass of dark matter candidates can span a wide range, and its coupling with the Standard…
Correlators of heavy-light quark currents in HQET: OPE at three loops
K. G. Chetyrkin, A. G. Grozin
Coefficient functions of the operator product expansion of correlators of HQET heavy--light quark currents are calculated up operators of dimension 4 up to to 3 loops.
Simplified models for resonant neutral scalar production with missing transverse energy final states
Henning Bahl, Victor Martin Lozano, Georg Weiglein
Additional Higgs bosons appear in many extensions of the Standard Model (SM). While most existing searches for additional Higgs bosons concentrate on final states consisting of SM…
Vacuum (meta-)stability in the SSM
Thomas Biekötter, Sven Heinemeyer, Georg Weiglein
We perform an analysis of the vacuum stability of the neutral scalar potential of the -from- Supersymmetric Standard Model (SSM). As an example scenario, we discuss the a…
Parton distribution function uncertainties in theoretical predictions for far-forward tau neutrinos at the Large Hadron Collider
Weidong Bai, Milind Diwan, Maria Vittoria Garzelli +3
New experiments to measure neutrinos in the far-forward region at the Large Hadron Collider (LHC) are under design or already in preparation. Two of them, FASER and SND@LHC, are…
External leg corrections as an origin of large logarithms
Henning Bahl, Johannes Braathen, Georg Weiglein
The appearance of large logarithmic corrections is a well-known phenomenon in the presence of widely separated mass scales. In this work, we point out the existence of large Sudako…