Options
Search for Light Dark Matter with NA64 at CERN
Journal
Physical Review Letters
Date Issued
2023-10-20
Author(s)
Yu. M. Andreev
D. Banerjee
B. Banto Oberhauser
J. Bernhard
P. Bisio
A. Celentano
N. Charitonidis
A. G. Chumakov
D. Cooke
P. Crivelli
E. Depero
A. V. Dermenev
S. V. Donskov
R. R. Dusaev
T. Enik
V. N. Frolov
R. B. Galleguillos Silva
A. Gardikiotis
S. V. Gertsenberger
S. Girod
S. N. Gninenko
M. Hösgen
V. A. Kachanov
Y. Kambar
A. E. Karneyeu
E. A. Kasianova
G. D. Kekelidze
B. Ketzer
D. V. Kirpichnikov
M. M. Kirsanov
V. N. Kolosov
V. A. Kramarenko
L. V. Kravchuk
N. V. Krasnikov
V. Lysan
A. Marini
L. Marsicano
V. A. Matveev
R. Mena Fredes
R. G. Mena Yanssen
L. Molina Bueno
M. Mongillo
D. V. Peshekhonov
V. A. Polyakov
B. Radics
K. M. Salamatin
V. D. Samoylenko
H. Sieber
D. A. Shchukin
O. Soto
V. O. Tikhomirov
I. V. Tlisova
A. N. Toropin
M. Tuzi
B. I. Vasilishin
P. V. Volkov
V. Yu. Volkov
I. V. Voronchikhin
J. Zamora-Saá
A. S. Zhevlakov
Abstract
Thermal dark matter models with particle χ masses below the electroweak scale can provide an
explanation for the observed relic dark matter density. This would imply the existence of a new feeble
interaction between the dark and ordinary matter. We report on a new search for the sub-GeV χ production
through the interaction mediated by a new vector boson, called the dark photon A0
, in collisions of 100 GeV
electrons with the active target of the NA64 experiment at the CERN SPS. With 9.37 × 1011 electrons on
target collected during 2016–2022 runs NA64 probes for the first time the well-motivated region of
parameter space of benchmark thermal scalar and fermionic dark matter models. No evidence for dark
matter production has been found. This allows us to set the most sensitive limits on the A0 couplings to
photons for masses mA0 ≲ 0.35 GeV, and to exclude scalar and Majorana dark matter with the χ − A0
coupling αD ≤ 0.1 for masses 0.001 ≲ mχ ≲ 0.1 GeV and 3mχ ≤ mA0 .
explanation for the observed relic dark matter density. This would imply the existence of a new feeble
interaction between the dark and ordinary matter. We report on a new search for the sub-GeV χ production
through the interaction mediated by a new vector boson, called the dark photon A0
, in collisions of 100 GeV
electrons with the active target of the NA64 experiment at the CERN SPS. With 9.37 × 1011 electrons on
target collected during 2016–2022 runs NA64 probes for the first time the well-motivated region of
parameter space of benchmark thermal scalar and fermionic dark matter models. No evidence for dark
matter production has been found. This allows us to set the most sensitive limits on the A0 couplings to
photons for masses mA0 ≲ 0.35 GeV, and to exclude scalar and Majorana dark matter with the χ − A0
coupling αD ≤ 0.1 for masses 0.001 ≲ mχ ≲ 0.1 GeV and 3mχ ≤ mA0 .
Subjects
File(s)
No Thumbnail Available
Name
PhysRevLett.131.161801 (1)_compressed (1).pdf
Size
508 KB
Format
Checksum
