First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam-Reference-Cited by-同舟云学术

First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam

Published:2024-05-21 Issue:21 Volume:132 Page:
ISSN:0031-9007
Container-title:Physical Review Letters
language:en
Short-container-title:Phys. Rev. Lett.

Author:

Andreev Yu. M.¹^ORCID,Banerjee D.²^ORCID,Banto Oberhauser B.³^ORCID,Bernhard J.²^ORCID,Bisio P.⁴⁵,Charitonidis N.²^ORCID,Crivelli P.³^ORCID,Depero E.³^ORCID,Dermenev A. V.¹^ORCID,Donskov S. V.¹^ORCID,Dusaev R. R.¹^ORCID,Enik T.⁶^ORCID,Frolov V. N.⁶,Gardikiotis A.⁷^ORCID,Gertsenberger S. V.⁶^ORCID,Girod S.²,Gninenko S. N.¹⁸^ORCID,Hösgen M.⁹,Joosten R.¹⁰,Kachanov V. A.¹^ORCID,Kambar Y.⁶^ORCID,Karneyeu A. E.¹^ORCID,Kasianova E. A.⁶,Kekelidze G.⁶^ORCID,Ketzer B.⁹^ORCID,Kirpichnikov D. V.¹^ORCID,Kirsanov M. M.¹^ORCID,Kolosov V. N.¹,Kramarenko V. A.¹⁶^ORCID,Kravchuk L. V.¹^ORCID,Krasnikov N. V.¹⁶^ORCID,Kuleshov S. V.⁸¹¹^ORCID,Lyubovitskij V. E.¹¹²¹¹^ORCID,Lysan V.⁶^ORCID,Matveev V. A.⁶^ORCID,Mena Fredes R.¹¹¹²,Mena Yanssen R. G.¹¹¹²,Molina Bueno L.¹³^ORCID,Mongillo M.³^ORCID,Peshekhonov D. V.⁶^ORCID,Polyakov V. A.¹^ORCID,Radics B.¹⁴^ORCID,Salamatin K. M.⁶^ORCID,Samoylenko V. D.¹,Shchukin D. A.¹^ORCID,Soto O.¹⁵¹¹,Sieber H.³^ORCID,Tikhomirov V. O.¹^ORCID,Tlisova I. V.¹^ORCID,Toropin A. N.¹^ORCID,Tuzi M.¹³^ORCID,Veit M. B.¹⁶,Volkov P. V.¹⁶^ORCID,Volkov V. Yu.¹^ORCID,Voronchikhin I. V.¹^ORCID,Zamora-Saá J.⁸¹¹^ORCID,Zhevlakov A. S.⁶^ORCID

Affiliation:

1. Authors affiliated with an institute covered by a cooperation agreement with CERN

2. CERN, European Organization for Nuclear Research, CH-1211 Geneva, Switzerland

3. ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland

4. INFN, Sezione di Genova, 16147 Genova, Italia

5. Università degli Studi di Genova, 16126 Genova, Italia

6. Authors affiliated with an international laboratory covered by a cooperation agreement with CERN

7. Physics Department, University of Patras, 265 04 Patras, Greece

8. Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andres Bello, Fernandez Concha 700, Santiago, Chile

9. Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany

10. Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany

11. Millennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile

12. Universidad Técnica Federico Santa María and CCTVal, 2390123 Valparaíso, Chile

13. Instituto de Fisica Corpuscular (CSIC/UV), Carrer del Catedratic Jose Beltran Martinez, 2, 46980 Paterna, Valencia, Spain

14. York University, Toronto, Canada

15. Departamento de Fisica, Facultad de Ciencias, Universidad de La Serena, Avenida Cisternas 1200, La Serena, Chile

16. Johannes Gutenberg Universitaet Mainz, Germany

Abstract

We report the first search for dark sectors performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from the M2 beamline at the CERN Super Proton Synchrotron with a momentum of 160 GeV/c are directed to an active target. The signal signature consists of a single scattered muon with momentum <80 GeV/c in the final state, accompanied by missing energy, i.e., no detectable activity in the downstream calorimeters. For a total dataset of (1.98±0.02)×1010 muons on target, no event is observed in the expected signal region. This allows us to set new limits on the remaining (mZ′,gZ′) parameter space of a new Z′ (Lμ−Lτ) vector boson which could explain the muon (g−2)μ anomaly. Additionally, our study excludes part of the parameter space suggested by the thermal dark matter relic abundance. Our results pave the way to explore dark sectors and light dark matter with muon beams in a unique and complementary way to other experiments.

Published by the American Physical Society

2024

Funder

CERN

Rheinische Friedrich-Wilhelms-Universität Bonn

Eidgenössische Technische Hochschule Zürich

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Agencia Nacional de Investigación y Desarrollo

Ministerio de Ciencia e Innovación

Agencia Estatal de Investigación

Federación Española de Enfermedades Raras

HISKP