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Aad, G.Aix Marseille Univ, CPPM, IN2P3, CNRS, Marseille, France.
(author)
Search in diphoton and dielectron final states for displaced production of Higgs or Z bosons with the ATLAS detector in √s=13 TeV pp collisions
- Article/chapterEnglish2023
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AMER PHYSICAL SOC,2023
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LIBRIS-ID:oai:DiVA.org:su-223411
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-223411URI
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https://doi.org/10.1103/PhysRevD.108.012012DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-339388URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-515714URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20231108
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For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.108.012012
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A search is presented for displaced production of Higgs bosons or Z bosons, originating from the decay of a neutral long-lived particle (LLP) and reconstructed in the decay modes H→γγ and Z→ee. The analysis uses the full Run 2 dataset of proton-proton collisions delivered by the LHC at an energy of √s=13 TeV between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an integrated luminosity of 139 fb−1. Exploiting the capabilities of the ATLAS liquid argon calorimeter to precisely measure the arrival times and trajectories of electromagnetic objects, the analysis searches for the signature of pairs of photons or electrons which arise from a common displaced vertex and which arrive after some delay at the calorimeter. The results are interpreted in a gauge-mediated supersymmetry breaking model with pair-produced Higgsinos that decay to LLPs, and each LLP subsequently decays into either a Higgs boson or a Z boson. The final state includes at least two particles that escape direct detection, giving rise to missing transverse momentum. No significant excess is observed above the background expectation. The results are used to set upper limits on the cross section for Higgsino pair production, up to a mass of 369 (704) GeV for decays with 100% branching ratio of to Higgs (Z) bosons for a lifetime of 2 ns. A model-independent limit is also set on the production of pairs of photons or electrons with a significant delay in arrival at the calorimeter.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Andrean, Stefio Y.,1991-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)stan8823
(author)
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Backman, Filip,1991-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)fiba9596
(author)
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Barranco Navarro, Laura,1990-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)laba6803
(author)
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Bohm, Christian,1946-KTH,Stockholms universitet,Fysikum,Partikel- och astropartikelfysik(Swepub:kth)u128x0hb
(author)
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Clément, Christophe,1972-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)clement
(author)
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Dunne, Katherine,1987-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)duka4053
(author)
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Hellman, Sten,1956-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sten
(author)
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Ingebretsen Carlson, Tom,1989-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)toca8159
(author)
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Kim, Dongwon,1989-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)doki7224
(author)
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Lee, SuhyunStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sule7128
(author)
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Lou, Xuanhong,1995-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)xulo6599
(author)
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Milstead, David A.,1970-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)milstead
(author)
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Moa, Torbjörn,1953-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)moa
(author)
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Pasuwan, Patrawan,1990-KTH,Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Partikel- och astropartikelfysik(Swepub:kth)u1bwjttr
(author)
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Pereira Sanchez, Laura,1995-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)lape0222
(author)
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Richter, Stefan,1988-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)stri5038
(author)
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Silverstein, Samuel B.,1967-Stockholms universitet,Fysikum(Swepub:su)silver
(author)
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Sjölin, Jörgen,1968-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sjolin
(author)
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Strandberg, Sara,1977-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)strandberg
(author)
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Strübig, Antonia,1985-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)anst7511
(author)
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Valdés Santurio, Eduardo,1984-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)edval
(author)
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Zwalinski, L.CERN, Geneva, Switzerland.
(author)
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Lund-Jensen, BengtKTH,Partikel- och astropartikelfysik(Swepub:kth)u13bp6vd
(author)
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Ripellino, GiuliaKTH,Partikel- och astropartikelfysik(Swepub:kth)u13f31yo
(author)
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Strandberg, JonasKTH,Partikel- och astropartikelfysik(Swepub:kth)u1midk9y
(author)
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Asimakopoulou, Eleni M.Uppsala universitet,Högenergifysik(Swepub:uu)eleas553
(author)
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Bergeås Kuutmann, Elin,1980-Uppsala universitet,Högenergifysik(Swepub:uu)elibe340
(author)
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Bokan, PetarUppsala universitet,Högenergifysik,Georg August Univ Gottingen, Phys Inst 2, Gottingen, Germany(Swepub:uu)petbo828
(author)
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Brenner, RichardUppsala universitet,Högenergifysik(Swepub:uu)richbren
(author)
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Ekelöf, TordUppsala universitet,Högenergifysik(Swepub:uu)tordeke
(author)
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Ellajosyula, VenugopalUppsala universitet,Högenergifysik(Swepub:uu)venel845
(author)
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Ellert, MattiasUppsala universitet,Högenergifysik(Swepub:uu)mel03009
(author)
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Ferrari, Arnaud,1973-Uppsala universitet,Högenergifysik(Swepub:uu)arfer499
(author)
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Isacson, Max F.Uppsala universitet,Högenergifysik(Swepub:uu)maxis346
(author)
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Mårtensson, Mikael U. F.Uppsala universitet,Högenergifysik(Swepub:uu)mikma359
(author)
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Aix Marseille Univ, CPPM, IN2P3, CNRS, Marseille, France.Fysikum
(creator_code:org_t)
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In:Physical Review D: AMER PHYSICAL SOC108:12470-00102470-0029
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