000112051 001__ 112051
000112051 005__ 20230519145552.0
000112051 0247_ $$2doi$$a10.1007/JHEP07(2021)146
000112051 0248_ $$2sideral$$a126565
000112051 037__ $$aART-2021-126565
000112051 041__ $$aeng
000112051 100__ $$aSimón A.
000112051 245__ $$aBoosting background suppression in the NEXT experiment through Richardson-Lucy deconvolution
000112051 260__ $$c2021
000112051 5060_ $$aAccess copy available to the general public$$fUnrestricted
000112051 5203_ $$aNext-generation neutrinoless double beta decay experiments aim for half-life sensitivities of ~ 1027 yr, requiring suppressing backgrounds to < 1 count/tonne/yr. For this, any extra background rejection handle, beyond excellent energy resolution and the use of extremely radiopure materials, is of utmost importance. The NEXT experiment exploits differences in the spatial ionization patterns of double beta decay and single-electron events to discriminate signal from background. While the former display two Bragg peak dense ionization regions at the opposite ends of the track, the latter typically have only one such feature. Thus, comparing the energies at the track extremes provides an additional rejection tool. The unique combination of the topology-based background discrimination and excellent energy resolution (1% FWHM at the Q-value of the decay) is the distinguishing feature of NEXT. Previous studies demonstrated a topological background rejection factor of ~ 5 when reconstructing electron-positron pairs in the 208Tl 1.6 MeV double escape peak (with Compton events as background), recorded in the NEXT-White demonstrator at the Laboratorio Subterráneo de Canfranc, with 72% signal efficiency. This was recently improved through the use of a deep convolutional neural network to yield a background rejection factor of ~ 10 with 65% signal efficiency. Here, we present a new reconstruction method, based on the Richardson-Lucy deconvolution algorithm, which allows reversing the blurring induced by electron diffusion and electroluminescence light production in the NEXT TPC. The new method yields highly refined 3D images of reconstructed events, and, as a result, significantly improves the topological background discrimination. When applied to real-data 1.6 MeV e-e+ pairs, it leads to a background rejection factor of 27 at 57% signal efficiency. [Figure not available: see fulltext.]. © 2021, The Author(s).
000112051 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000112051 590__ $$a6.376$$b2021
000112051 592__ $$a0.895$$b2021
000112051 594__ $$a10.3$$b2021
000112051 591__ $$aPHYSICS, PARTICLES & FIELDS$$b6 / 29 = 0.207$$c2021$$dQ1$$eT1
000112051 593__ $$aNuclear and High Energy Physics$$c2021$$dQ2
000112051 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000112051 700__ $$aIfergan Y.
000112051 700__ $$aRedwine A.B.
000112051 700__ $$aWeiss-Babai R.
000112051 700__ $$aArazi L.
000112051 700__ $$aAdams C.
000112051 700__ $$aAlmazán H.
000112051 700__ $$aÁlvarez V.
000112051 700__ $$aAparicio B.
000112051 700__ $$aAranburu A.I.
000112051 700__ $$aArnquist I.J.
000112051 700__ $$aAzevedo C.D.R.
000112051 700__ $$aBailey K.
000112051 700__ $$aBallester F.
000112051 700__ $$aBenlloch-Rodríguez J.M.
000112051 700__ $$aBorges F.I.G.M.
000112051 700__ $$aByrnes N.
000112051 700__ $$aCárcel S.
000112051 700__ $$aCarrión J.V.
000112051 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián S.$$uUniversidad de Zaragoza
000112051 700__ $$aChurch E.
000112051 700__ $$aConde C.A.N.
000112051 700__ $$aContreras T.
000112051 700__ $$aCossío F.P.
000112051 700__ $$aDenisenko A.A.
000112051 700__ $$aDíaz G.
000112051 700__ $$aDíaz J.
000112051 700__ $$aEscada J.
000112051 700__ $$aEsteve R.
000112051 700__ $$aFelkai R.
000112051 700__ $$aFernandes L.M.P.
000112051 700__ $$aFerrario P.
000112051 700__ $$aFerreira A.L.
000112051 700__ $$aFoss F.
000112051 700__ $$aFreitas E.D.C.
000112051 700__ $$aFreixa Z.
000112051 700__ $$aGenerowicz J.
000112051 700__ $$aGoldschmidt A.
000112051 700__ $$aGómez-Cadenas J.J.
000112051 700__ $$aGonzález R.
000112051 700__ $$aGonzález-Díaz D.
000112051 700__ $$aGosh S.
000112051 700__ $$aGuenette R.
000112051 700__ $$aGutiérrez R.M.
000112051 700__ $$aHaefner J.
000112051 700__ $$aHafidi K.
000112051 700__ $$aHauptman J.
000112051 700__ $$aHenriques C.A.O.
000112051 700__ $$aHernando Morata J.A.
000112051 700__ $$aHerrero P.
000112051 700__ $$aHerrero V.
000112051 700__ $$aHo J.
000112051 700__ $$aJones B.J.P.
000112051 700__ $$aKekic M.
000112051 700__ $$aLabarga L.
000112051 700__ $$aLaing A.
000112051 700__ $$aLebrun P.
000112051 700__ $$aLópez-March N.
000112051 700__ $$aLosada M.
000112051 700__ $$aMano R.D.P.
000112051 700__ $$aMartín-Albo J.
000112051 700__ $$aMartínez A.
000112051 700__ $$aMartínez-Vara M.
000112051 700__ $$aMartínez-Lema G.
000112051 700__ $$aMcDonald A.D.
000112051 700__ $$aMeziani Z.-E.
000112051 700__ $$aMonrabal F.
000112051 700__ $$aMonteiro C.M.B.
000112051 700__ $$aMora F.J.
000112051 700__ $$aMuñoz Vidal J.
000112051 700__ $$aNewhouse C.
000112051 700__ $$aNovella P.
000112051 700__ $$aNygren D.R.
000112051 700__ $$aOblak E.
000112051 700__ $$aOdriozola-Gimeno M.
000112051 700__ $$aPalmeiro B.
000112051 700__ $$aPara A.
000112051 700__ $$aPérez J.
000112051 700__ $$aQuerol M.
000112051 700__ $$aRenner J.
000112051 700__ $$aRipoll L.
000112051 700__ $$aRivilla I.
000112051 700__ $$aRodríguez García Y.
000112051 700__ $$aRodríguez J.
000112051 700__ $$aRogero C.
000112051 700__ $$aRogers L.
000112051 700__ $$aRomeo B.
000112051 700__ $$aRomo-Luque C.
000112051 700__ $$aSantos F.P.
000112051 700__ $$ados Santos J.M.F.
000112051 700__ $$aSorel M.
000112051 700__ $$aStanford C.
000112051 700__ $$aTeixeira J.M.R.
000112051 700__ $$aThapa P.
000112051 700__ $$aToledo J.F.
000112051 700__ $$aTorrent J.
000112051 700__ $$aUsón A.
000112051 700__ $$aVeloso J.F.C.A.
000112051 700__ $$aVuong T.T.
000112051 700__ $$aWebb R.
000112051 700__ $$aWhite J.T.
000112051 700__ $$aWoodruff K.
000112051 700__ $$aYahlali N.
000112051 700__ $$aThe NEXT collaboration
000112051 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000112051 773__ $$g2021, 7 (2021), 146$$pJ. high energy phys.$$tJournal of High Energy Physics$$x1126-6708
000112051 8564_ $$s12079324$$uhttps://zaguan.unizar.es/record/112051/files/texto_completo.pdf$$yVersión publicada
000112051 8564_ $$s1732021$$uhttps://zaguan.unizar.es/record/112051/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000112051 909CO $$ooai:zaguan.unizar.es:112051$$particulos$$pdriver
000112051 951__ $$a2023-05-18-15:51:20
000112051 980__ $$aARTICLE