Sensitivity of the NEXT experiment to Xe-124 double electron capture

Martínez-Lema, G.; Felkai, R.; Toledo, J.F.; Guenette, R.; Haefner, J.; Church, E.; Laing, A.; Ripoll, L.; Novella, P.; Monrabal, F.; Woodruff, K.; Ferrario, P.; Querol, M.; Sorel, M.; Díaz, J.; Hernando Morata, J.A.; Riordan, S.; Renner, J.; Stiegler, T.; Ifergan, Y.; Fernandes, L.M.P.; Torrent, J.; Gutiérrez, R.M.; Fernandes, A.F.M.; Martínez, A.; Rogers, L.; White, J.T.; Álvarez, V.; Esteve, R.; Romo-Luque, C.; Santos, F.P.; Rodríguez, J.; Redwine, A.B.; Cárcel, S.; Ferreira, A.L.; Jones, B.J.P.; Losada, M.; Nygren, D.R.; Muñoz Vidal, J.; Simón, A.; Yahlali, N.; Díaz, G.; Escada, J.; Sofka, C.; dos Santos, J.M.F.; Generowicz, J.; Repond, J.; Para, A.; Freitas, E.D.C.; Hafidi, K.; Mora, F.J.; Goldschmidt, A.; López-March, N.; Mano, R.D.P.; Benlloch-Rodríguez, J.M.; Pérez, J.; Bailey, K.; Usón, A.; Labarga, L.; Contreras, T.; Ghosh, S.; Romeo, B.; Arnquist, I.J.; Herrero, V.; Gómez-Cadenas, J.J.; Cebrián, S.; Conde, C.A.N.; Martínez-Vara, M.; Lebrun, P.; Carrión, J.V.; Adams, C.; Hauptman, J.; Webb, R.; Martín-Albo, J.; Borges, F.I.G.M.; Azevedo, C.D.R.; The, NEXT, collaboration; Byrnes, N.; McDonald, A.D.; Weiss-Babai, R.; Henriques, C.A.O.; Johnston, S.; Diesburg, M.; Kekic, M.; González-Díaz, D.; Monteiro, C.M.B.; Veloso, J.F.C.A.; Arazi, L.; Rodríguez García, Y.; Ballester, F.; Herrero, P.; Palmeiro, B.

doi:10.1007/JHEP02(2021)203

000102139 001__ 102139
000102139 005__ 20230519145408.0
000102139 0247_ $$2doi$$a10.1007/JHEP02(2021)203
000102139 0248_ $$2sideral$$a124372
000102139 037__ $$aART-2021-124372
000102139 041__ $$aeng
000102139 100__ $$aMartínez-Lema, G.
000102139 245__ $$aSensitivity of the NEXT experiment to Xe-124 double electron capture
000102139 260__ $$c2021
000102139 5060_ $$aAccess copy available to the general public$$fUnrestricted
000102139 5203_ $$aDouble electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different, potentially providing a new channel to measure the hypothesized neutrinoless mode of these decays. The Standard-Model-allowed two-neutrino double electron capture (2¿EC EC) has been predicted for a number of isotopes, but only observed in 78Kr, 130Ba and, recently, 124Xe. The sensitivity to this decay establishes a benchmark for the ultimate experimental goal, namely the potential to discover also the lepton-number-violating neutrinoless version of this process, 0¿EC EC. Here we report on the current sensitivity of the NEXT-White detector to 124Xe 2¿EC EC and on the extrapolation to NEXT-100. Using simulated data for the 2¿EC EC signal and real data from NEXT-White operated with 124Xe-depleted gas as background, we define an optimal event selection that maximizes the NEXT-White sensitivity. We estimate that, for NEXT-100 operated with xenon gas isotopically enriched with 1 kg of 124Xe and for a 5-year run, a sensitivity to the 2¿EC EC half-life of 6 × 1022 y (at 90% confidence level) or better can be reached. [Figure not available: see fulltext.]
000102139 536__ $$9info:eu-repo/grantAgreement/EC/FP7/339787/EU/Towards the NEXT generation of bb0nu experimets/NEXT$$9info:eu-repo/grantAgreement/EC/H2020/690575/EU/InvisiblesPlus/InvisiblesPlus$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 690575-InvisiblesPlus$$9info:eu-repo/grantAgreement/EC/H2020/740055/EU/Molecule for low diffusion TPCs for rare event searches/MELODIC$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 740055-MELODIC$$9info:eu-repo/grantAgreement/ES/MINECO/CEX2018-000867-S$$9info:eu-repo/grantAgreement/ES/MINECO-MCIU/FIS2014-53371-C04$$9info:eu-repo/grantAgreement/ES/MINECO-MCIU/RTI2018-095979$$9info:eu-repo/grantAgreement/ES/MINECO/MDM-2016-0692$$9info:eu-repo/grantAgreement/ES/MINECO/RYC-2015-18820$$9info:eu-repo/grantAgreement/ES/MINECO/SEV-2014-0398
000102139 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000102139 590__ $$a6.376$$b2021
000102139 592__ $$a0.895$$b2021
000102139 594__ $$a10.3$$b2021
000102139 591__ $$aPHYSICS, PARTICLES & FIELDS$$b6 / 29 = 0.207$$c2021$$dQ1$$eT1
000102139 593__ $$aNuclear and High Energy Physics$$c2021$$dQ2
000102139 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000102139 700__ $$aMartínez-Vara, M.
000102139 700__ $$aSorel, M.
000102139 700__ $$aAdams, C.
000102139 700__ $$aÁlvarez, V.
000102139 700__ $$aArazi, L.
000102139 700__ $$aArnquist, I.J.
000102139 700__ $$aAzevedo, C.D.R.
000102139 700__ $$aBailey, K.
000102139 700__ $$aBallester, F.
000102139 700__ $$aBenlloch-Rodríguez, J.M.
000102139 700__ $$aBorges, F.I.G.M.
000102139 700__ $$aByrnes, N.
000102139 700__ $$aCárcel, S.
000102139 700__ $$aCarrión, J.V.
000102139 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza
000102139 700__ $$aChurch, E.
000102139 700__ $$aConde, C.A.N.
000102139 700__ $$aContreras, T.
000102139 700__ $$aDíaz, G.
000102139 700__ $$aDíaz, J.
000102139 700__ $$aDiesburg, M.
000102139 700__ $$aEscada, J.
000102139 700__ $$aEsteve, R.
000102139 700__ $$aFelkai, R.
000102139 700__ $$aFernandes, A.F.M.
000102139 700__ $$aFernandes, L.M.P.
000102139 700__ $$aFerrario, P.
000102139 700__ $$aFerreira, A.L.
000102139 700__ $$aFreitas, E.D.C.
000102139 700__ $$aGenerowicz, J.
000102139 700__ $$aGhosh, S.
000102139 700__ $$aGoldschmidt, A.
000102139 700__ $$aGómez-Cadenas, J.J.
000102139 700__ $$aGonzález-Díaz, D.
000102139 700__ $$aGuenette, R.
000102139 700__ $$aGutiérrez, R.M.
000102139 700__ $$aHaefner, J.
000102139 700__ $$aHafidi, K.
000102139 700__ $$aHauptman, J.
000102139 700__ $$aHenriques, C.A.O.
000102139 700__ $$aHernando Morata, J.A.
000102139 700__ $$aHerrero, P.
000102139 700__ $$aHerrero, V.
000102139 700__ $$aIfergan, Y.
000102139 700__ $$aJohnston, S.
000102139 700__ $$aJones, B.J.P.
000102139 700__ $$aKekic, M.
000102139 700__ $$aLabarga, L.
000102139 700__ $$aLaing, A.
000102139 700__ $$aLebrun, P.
000102139 700__ $$aLópez-March, N.
000102139 700__ $$aLosada, M.
000102139 700__ $$aMano, R.D.P.
000102139 700__ $$aMartín-Albo, J.
000102139 700__ $$aMartínez, A.
000102139 700__ $$aMcDonald, A.D.
000102139 700__ $$aMonrabal, F.
000102139 700__ $$aMonteiro, C.M.B.
000102139 700__ $$aMora, F.J.
000102139 700__ $$aMuñoz Vidal, J.
000102139 700__ $$aNovella, P.
000102139 700__ $$aNygren, D.R.
000102139 700__ $$aPalmeiro, B.
000102139 700__ $$aPara, A.
000102139 700__ $$aPérez, J.
000102139 700__ $$aQuerol, M.
000102139 700__ $$aRedwine, A.B.
000102139 700__ $$aRenner, J.
000102139 700__ $$aRepond, J.
000102139 700__ $$aRiordan, S.
000102139 700__ $$aRipoll, L.
000102139 700__ $$aRodríguez García, Y.
000102139 700__ $$aRodríguez, J.
000102139 700__ $$aRogers, L.
000102139 700__ $$aRomeo, B.
000102139 700__ $$aRomo-Luque, C.
000102139 700__ $$aSantos, F.P.
000102139 700__ $$ados Santos, J.M.F.
000102139 700__ $$aSimón, A.
000102139 700__ $$aSofka, C.
000102139 700__ $$aStiegler, T.
000102139 700__ $$aToledo, J.F.
000102139 700__ $$aTorrent, J.
000102139 700__ $$aUsón, A.
000102139 700__ $$aVeloso, J.F.C.A.
000102139 700__ $$aWebb, R.
000102139 700__ $$aWeiss-Babai, R.
000102139 700__ $$aWhite, J.T.
000102139 700__ $$aWoodruff, K.
000102139 700__ $$aYahlali, N.
000102139 700__ $$aThe, NEXT, collaboration
000102139 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000102139 773__ $$g2021, 203 (2021), [25 pp.]$$pJ. high energy phys.$$tJournal of High Energy Physics$$x1126-6708
000102139 8564_ $$s1001107$$uhttps://zaguan.unizar.es/record/102139/files/texto_completo.pdf$$yVersión publicada
000102139 8564_ $$s1547961$$uhttps://zaguan.unizar.es/record/102139/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000102139 909CO $$ooai:zaguan.unizar.es:102139$$particulos$$pdriver
000102139 951__ $$a2023-05-18-13:51:26
000102139 980__ $$aARTICLE

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