Search for a τ+τ- Resonance in e+e- →μ+μ-τ+τ- Events with the Belle II Experiment

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dc.contributor.authorAdachi, I.en
dc.contributor.authorAdamczyk, K.en
dc.contributor.authorAggarwal, L.en
dc.contributor.authorAhmed, H.en
dc.contributor.authorAihara, H.en
dc.contributor.authorAkopov, N.en
dc.contributor.authorAloisio, A.en
dc.contributor.authorAnh Ky, N.en
dc.contributor.authorAsner, D. M.en
dc.contributor.authorAtmacan, H.en
dc.contributor.authorAushev, T.en
dc.contributor.authorAushev, V.en
dc.contributor.authorAversano, M.en
dc.contributor.authorBabu, V.en
dc.contributor.authorBae, H.en
dc.contributor.authorBahinipati, S.en
dc.contributor.authorBambade, P.en
dc.contributor.authorBanerjee, S.en
dc.contributor.authorBansal, S.en
dc.contributor.authorBarrett, M.en
dc.contributor.authorBaudot, J.en
dc.contributor.authorBauer, M.en
dc.contributor.authorBaur, A.en
dc.contributor.authorBeaubien, A.en
dc.contributor.authorBecker, J.en
dc.contributor.authorBehera, P. K.en
dc.contributor.authorBennett, J. V.en
dc.contributor.authorBernieri, E.en
dc.contributor.authorBernlochner, F. U.en
dc.contributor.authorBertacchi, V.en
dc.contributor.authorBertemes, M.en
dc.contributor.authorBertholet, E.en
dc.contributor.authorBessner, M.en
dc.contributor.authorBettarini, S.en
dc.contributor.authorBhardwaj, V.en
dc.contributor.authorBhuyan, B.en
dc.contributor.authorBianchi, F.en
dc.contributor.authorBilka, T.en
dc.contributor.authorBilokin, S.en
dc.contributor.authorBiswas, D.en
dc.contributor.authorBobrov, A.en
dc.contributor.authorBodrov, D.en
dc.contributor.authorBolz, A.en
dc.contributor.authorBorah, J.en
dc.contributor.authorBozek, A.en
dc.contributor.authorBračko, M.en
dc.contributor.authorBranchini, P.en
dc.contributor.authorBrowder, T. E.en
dc.contributor.authorBudano, A.en
dc.contributor.authorBussino, S.en
dc.contributor.authorCampajola, M.en
dc.contributor.authorCao, L.en
dc.contributor.authorCasarosa, G.en
dc.contributor.authorCecchi, C.en
dc.contributor.authorCerasoli, J.en
dc.contributor.authorChang, M. C.en
dc.contributor.authorChang, P.en
dc.contributor.authorCheaib, R.en
dc.contributor.authorCheema, P.en
dc.contributor.authorChekelian, V.en
dc.contributor.authorChen, Y. Q.en
dc.contributor.authorCheon, B. G.en
dc.contributor.authorChilikin, K.en
dc.contributor.authorChirapatpimol, K.en
dc.contributor.authorCho, H. E.en
dc.contributor.authorCho, K.en
dc.contributor.authorCho, S. J.en
dc.contributor.authorChoi, S. K.en
dc.contributor.authorChoudhury, S.en
dc.contributor.authorCinabro, D.en
dc.contributor.authorCochran, J.en
dc.contributor.authorCorona, L.en
dc.contributor.authorCremaldi, L. M.en
dc.contributor.authorCunliffe, S.en
dc.contributor.authorCzank, T.en
dc.contributor.authorDas, S.en
dc.contributor.authorDattola, F.en
dc.contributor.authorDe La Cruz-Burelo, E.en
dc.contributor.authorDe La Motte, S. A.en
dc.contributor.authorDe Marino, G.en
dc.contributor.authorDe Nardo, G.en
dc.contributor.authorDe Nuccio, M.en
dc.contributor.authorDe Pietro, G.en
dc.contributor.authorDe Sangro, R.en
dc.contributor.authorDestefanis, M.en
dc.contributor.authorDey, S.en
dc.contributor.authorDe Yta-Hernandez, A.en
dc.contributor.authorDhamija, R.en
dc.contributor.authorDi Canto, A.en
dc.contributor.authorDi Capua, F.en
dc.contributor.authorDingfelder, J.en
dc.contributor.authorDoleŽal, Z.en
dc.contributor.authorDomínguez Jiménez, I.en
dc.contributor.authorDong, T. V.en
dc.contributor.authorDorigo, M.en
dc.contributor.authorDort, K.en
dc.contributor.authorDossett, D.en
dc.contributor.authorDreyer, S.en
dc.contributor.authorDubey, S.en
dc.contributor.authorDujany, G.en
dc.date.accessioned2023-12-08T18:21:05Zen
dc.date.available2023-12-08T18:21:05Zen
dc.date.issued2023-09-22en
dc.date.issued2023-09-21en
dc.description.abstractWe report the first search for a nonstandard-model resonance decaying into τ pairs in e+e-→μ+μ-τ+τ- events in the 3.6-10 GeV/c2 mass range. We use a 62.8 fb-1 sample of e+e- collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 particle coupling only to the heavier lepton families, a Higgs-like spin-0 particle that couples preferentially to charged leptons (leptophilic scalar), and an axionlike particle, respectively. We observe no evidence for a signal and set exclusion limits at 90% confidence level on the product of cross section and branching fraction into τ pairs, ranging from 0.7 to 24 fb, and on the couplings of these processes. We obtain world-leading constraints on the couplings for the leptophilic scalar model for masses above 6.5 GeV/c2 and for the axionlike particle model over the entire mass range.en
dc.description.versionPublished versionen
dc.format.extentPages 121802en
dc.format.mediumPrinten
dc.identifier121802 (Article number)en
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.131.121802en
dc.identifier.eissn1079-7114en
dc.identifier.issn0031-9007en
dc.identifier.issue12en
dc.identifier.orcidPiilonen, Leo [0000-0001-6836-0748]en
dc.identifier.pmid37802942en
dc.identifier.urihttps://hdl.handle.net/10919/117149en
dc.identifier.volume131en
dc.languageengen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/37802942en
dc.relation.urihttp://dx.doi.org/10.1103/physrevlett.131.121802en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectBelle II Collaborationen
dc.subject5106 Nuclear and Plasma Physicsen
dc.subject5107 Particle and High Energy Physicsen
dc.subject4902 Mathematical Physicsen
dc.subject49 Mathematical Sciencesen
dc.subject51 Physical Sciencesen
dc.subject40 Engineeringen
dc.titleSearch for a τ+τ- Resonance in e+e- →μ+μ-τ+τ- Events with the Belle II Experimenten
dc.title.serialPhysical Review Lettersen
dc.typeArticle - Refereeden
dc.type.otherJournal Articleen
dcterms.dateAccepted2023-08-08en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Tech/Science/Physicsen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen

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