TY - JOUR
T1 - Search for heavy, long-lived, charged particles with large ionisation energy loss in pp collisions at √s = 13 TeV using the ATLAS experiment and the full Run 2 dataset
AU - ATLAS Collaboration
AU - Allport, Phil
AU - Bellos, Panagiotis
AU - Bird, Gareth
AU - Bracinik, Juraj
AU - Charlton, David
AU - Chisholm, Andrew
AU - Fitschen, Tobias
AU - George, William
AU - Gonella, Laura
AU - Hawkes, Chris
AU - Kempster, Jacob
AU - Mendes Jacques Da Costa, Antonio Manuel
AU - Neep, Thomas
AU - Newman, Paul
AU - Nikolopoulos, Konstantinos
AU - Stampekis, Alexis
AU - Thomas, Jurgen
AU - Thompson, Paul
AU - Virdee, Gov
AU - Ward, Robert
AU - Watson, Alan
AU - Watson, Miriam
PY - 2023/6/26
Y1 - 2023/6/26
N2 - This paper presents a search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 139 fb−1 of proton--proton collisions at √s = 13 TeV. These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses, dE/dx. Trajectories reconstructed solely by the inner tracking system and a dE/dx measurement in the pixel detector layers provide sensitivity to particles with lifetimes down to O(1) ns with a mass, measured using the Bethe--Bloch relation, ranging from 100 GeV to 3 TeV. Interpretations for pair-production of R-hadrons, charginos and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending considerably beyond those from previous searches in broad ranges of lifetime.
AB - This paper presents a search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 139 fb−1 of proton--proton collisions at √s = 13 TeV. These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses, dE/dx. Trajectories reconstructed solely by the inner tracking system and a dE/dx measurement in the pixel detector layers provide sensitivity to particles with lifetimes down to O(1) ns with a mass, measured using the Bethe--Bloch relation, ranging from 100 GeV to 3 TeV. Interpretations for pair-production of R-hadrons, charginos and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending considerably beyond those from previous searches in broad ranges of lifetime.
KW - Beyond Standard Model
KW - Exotics
KW - Hadron-Hadron Scattering
KW - Supersymmetry
U2 - 10.1007/JHEP06(2023)158
DO - 10.1007/JHEP06(2023)158
M3 - Article
SN - 1126-6708
VL - 2023
JO - JHEP
JF - JHEP
IS - 6
M1 - 158
ER -