H. Sieber

activity

20202025

most citedImproved exclusion limit for light dark matter from

e^{+} e^{-}

annihilation in NA64

54 citations · 232 across the 19 of their papers we have counts for

collaborators

Showing 2021Show all

6 papers · 1 filter

hep-ex2021★ 41 cited

Prospects in the search for a new light $Z^{'}$ boson with the NA64 $μ$ experiment at the CERN SPS

H. Sieber, D. Banerjee, P. Crivelli +6

A light $Z^{'}$ vector boson coupled to the second and third lepton generations through $L_{μ} - L_{τ}$ current with mass below 200 MeV provides a very viable explanation in terms of new ph…

hep-ph2021

Probing Hidden Sectors with a muon beam: Total and differential cross-sections for vector boson production in muon bremsstrahlung

D. V. Kirpichnikov, H. Sieber, L. Molina Bueno +2

Vector bosons, such as Dark Photon $A^{'}$ or $Z^{'}$ , can couple to muons and be produced in the bremsstrahlung reaction $μ^{-} + N \to μ^{-} + N + A^{'} (Z^{'})$ . Their possible subsequen…

hep-ex2021★ 54 cited

Improved exclusion limit for light dark matter from $e^{+} e^{-}$ annihilation in NA64

Yu. Andreev, D. Banerjee, J. Bernhard +55

The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson $A^{'}$ were set by the NA64 experiment for…

hep-ex2021

Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel

C. Cazzaniga, P. Odagiu, E. Depero +55

We report the results of a search for a new vector boson ( $A^{'}$ ) decaying into two dark matter particles $χ_{1} χ_{2}$ of different mass. The heavier $χ_{2}$ particle subsequently decays…

hep-ex2021★ 27 cited

Search for pseudoscalar bosons decaying into $e^{+} e^{-}$ pairs in the NA64 experiment at the CERN SPS

Yu. M. Andreev, D. Banerjee, J. Bernhard +52

We report the results of a search for a light pseudoscalar particle $a$ that couples to electrons and decays to $e^{+} e^{-}$ performed using the high-energy CERN SPS H4 electron beam.…

hep-ex2021★ 42 cited

Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector

Yu. M. Andreev, D. Banerjee, J. Bernhard +49

We performed a search for a new generic $X$ boson, which could be a scalar ( $S$ ), pseudoscalar ( $P$ ), vector ( $V$ ) or an axial vector ( $A$ ) particle produced in the 100 GeV electro…

Prospects in the search for a new light Z′ boson with the NA64μ experiment at the CERN SPS