@Article{ATLASCollaborationAad_etal2023,
author="ATLAS Collaboration (Aad, G. et al
and Amos, K. R.
and Aparisi Pozo, J. A.
and Bailey, A. J.
and Cabrera Urban, S.
and Cantero, J.
and Cardillo, F.
and Castillo Gimenez, V.
and Costa, M. J.
and Didenko
and Escobar, C.
and Fiorini, L.
and Fullana Torregrosa, E.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gomez Delegido, A. J.
and Gonzalez de la Hoz, S.
and Gonzalvo Rodriguez, G. R.
and Guerrero Rojas, J. G. R.
and Higon-Rodriguez, E.
and Lacasta, C.
and Lozano Bahilo, J. J.
and Marti-Garcia, S.
and Martinez Agullo, P.
and Miralles Lopez, M.
and Mitsou, V. A.
and Monsonis Romero, L.
and Moreno Llacer, M.
and Munoz Perez, D.
and Navarro-Gonzalez, J.
and Poveda, J.
and Prades Iba{\~{n}}ez, A.
and Rubio Jimenez, A.
and Ruiz-Martinez, A.
and Sabatini, P.
and Salt, J.
and Sanchez Sebastian, V.
and Sayago Galvan, I.
and Senthilkumar, V.
and Soldevila, U.
and Sanchez, J.
and Torro Pastor, E.
and Valero, A.
and Valls Ferrer, J. A.
and Varriale, L.
and Villaplana Perez, M.
and Vos, M.",
title="Observation of the $\gamma$$\gamma$ {\textrightarrow} $\tau$$\tau$ Process in Pb plus Pb Collisions and Constraints on the $\tau$-Lepton Anomalous Magnetic Moment with the ATLAS Detector",
journal="Physical Review Letters",
year="2023",
publisher="Amer Physical Soc",
volume="131",
number="15",
pages="151802--23pp",
abstract="This Letter reports the observation of tau-lepton-pair production in ultraperipheral lead-lead collisions Pb + Pb -> Pb(gamma gamma -> tau tau)Pb and constraints on the tau-lepton anomalous magnetic moment a(tau). The dataset corresponds to an integrated luminosity of 1.44 nb(-1) of LHC Pb + Pb collisions at root(NN)-N-s = 5.02 TeV recorded by the ATLAS experiment in 2018. Selected events contain one muon from a t-lepton decay, an electron or charged-particle track(s) from the other tau-lepton decay, little additional central-detector activity, and no forward neutrons. The gamma gamma -> tau tau process is observed in Pb + Pb collisions with a significance exceeding 5 standard deviations and a signal strength of mu(tau tau) = 1.03(-0.05)(+0.06) assuming the standard model value for a(tau). To measure a(tau), a template fit to the muon transverse-momentum distribution from tau-lepton candidates is performed, using a dimuon (gamma gamma -> $\mu$mu) control sample to constrain systematic uncertainties. The observed 95{\%} confidence-level interval for a(tau) is -0.057 < a(tau) < 0.024.",
optnote="WOS:001094306100001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5837), last updated on Mon, 18 Dec 2023 08:45:05 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.131.151802",
opturl="https://arxiv.org/abs/2204.13478",
opturl="https://doi.org/10.1103/PhysRevLett.131.151802",
language="English"
}