Tracking of charged particles with nanosecond lifetimes at LHCb
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Published:2024-07-30
Issue:7
Volume:84
Page:
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ISSN:1434-6052
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Container-title:The European Physical Journal C
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language:en
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Short-container-title:Eur. Phys. J. C
Author:
, Aaij R.ORCID, Abdelmotteleb A. S. W.ORCID, Beteta C. Abellan, Abudinén F.ORCID, Ackernley T.ORCID, Adams J. A.ORCID, Adefisoye A. A.ORCID, Adeva B.ORCID, Adinolfi M.ORCID, Adlarson P.ORCID, Agapopoulou C.ORCID, Aidala C. A.ORCID, Ajaltouni Z., Akar S.ORCID, Akiba K.ORCID, Albicocco P.ORCID, Albrecht J.ORCID, Alessio F.ORCID, Alexander M.ORCID, Aliouche Z.ORCID, Alvarez Cartelle P.ORCID, Amalric R.ORCID, Amato S.ORCID, Amey J. L.ORCID, Amhis Y.ORCID, An L.ORCID, Anderlini L.ORCID, Andersson M.ORCID, Andreianov A.ORCID, Andreola P.ORCID, Andreotti M.ORCID, Andreou D.ORCID, Anelli A.ORCID, Ao D.ORCID, Archilli F.ORCID, Argenton M.ORCID, Arguedas Cuendis S.ORCID, Artamonov A.ORCID, Artuso M.ORCID, Aslanides E.ORCID, Atzeni M.ORCID, Audurier B.ORCID, Bacher D.ORCID, Bachiller Perea I.ORCID, Bachmann S.ORCID, Bachmayer M.ORCID, Back J. J.ORCID, Baladron Rodriguez P.ORCID, Balagura V.ORCID, Baldini W.ORCID, Bao H.ORCID, Baptista de Souza Leite J.ORCID, Barbetti M.ORCID, Barbosa I. R.ORCID, Barlow R. J.ORCID, Barnyakov M.ORCID, Barsuk S.ORCID, Barter W.ORCID, Bartolini M.ORCID, Bartz J.ORCID, Baryshnikov F.ORCID, Basels J. M.ORCID, Bassi G.ORCID, Batsukh B.ORCID, Bay A.ORCID, Beck A.ORCID, Becker M.ORCID, Bedeschi F.ORCID, Bediaga I. B.ORCID, Belin S.ORCID, Bellee V.ORCID, Belous K.ORCID, Belov I.ORCID, Belyaev I.ORCID, Benane G.ORCID, Bencivenni G.ORCID, Ben-Haim E.ORCID, Berezhnoy A.ORCID, Bernet R.ORCID, Bernet Andres S.ORCID, Bertolin A.ORCID, Betancourt C.ORCID, Betti F.ORCID, Bex J.ORCID, Bezshyiko Ia.ORCID, Bhom J.ORCID, Bieker M. S.ORCID, Biesuz N. V.ORCID, Billoir P.ORCID, Biolchini A.ORCID, Birch M.ORCID, Bishop F. C. R.ORCID, Bitadze A.ORCID, Bizzeti A.ORCID, Blake T.ORCID, Blanc F.ORCID, Blank J. E.ORCID, Blusk S.ORCID, Bocharnikov V.ORCID, Boelhauve J. A.ORCID, Boente Garcia O.ORCID, Boettcher T.ORCID, Bohare A.ORCID, Boldyrev A.ORCID, Bolognani C. S.ORCID, Bolzonella R.ORCID, Bondar N.ORCID, Borgato F.ORCID, Borghi S.ORCID, Borsato M.ORCID, Borsuk J. T.ORCID, Bouchiba S. A.ORCID, Bowcock T. J. V.ORCID, Boyer A.ORCID, Bozzi C.ORCID, Bradley M. J., Brea Rodriguez A.ORCID, Breer N.ORCID, Brodzicka J.ORCID, Brossa Gonzalo A.ORCID, Brown J.ORCID, Brundu D.ORCID, Buchanan E., Buonaura A.ORCID, Buonincontri L.ORCID, Burke A. T.ORCID, Burr C.ORCID, Butkevich A.ORCID, Butter J. S.ORCID, Buytaert J.ORCID, Byczynski W.ORCID, Cadeddu S.ORCID, Cai H., Calabrese R.ORCID, Calderon Ramirez S.ORCID, Calefice L.ORCID, Cali S.ORCID, Calvi M.ORCID, Calvo Gomez M.ORCID, Camargo Magalhaes P.ORCID, Cambon Bouzas J.ORCID, Campana P.ORCID, Campora Perez D. H.ORCID, Campoverde Quezada A. 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V.ORCID, Closier J.ORCID, Cocha Toapaxi C.ORCID, Coco V.ORCID, Cogan J.ORCID, Cogneras E.ORCID, Cojocariu L.ORCID, Collins P.ORCID, Colombo T.ORCID, Comerma-Montells A.ORCID, Congedo L.ORCID, Contu A.ORCID, Cooke N.ORCID, Corredoira I.ORCID, Correia A.ORCID, Corti G.ORCID, Cottee Meldrum J. J., Couturier B.ORCID, Craik D. C.ORCID, Cruz Torres M.ORCID, Curras Rivera E.ORCID, Currie R.ORCID, Da Silva C. L.ORCID, Dadabaev S.ORCID, Dai L.ORCID, Dai X.ORCID, Dall’Occo E.ORCID, Dalseno J.ORCID, D’Ambrosio C.ORCID, Daniel J.ORCID, Danilina A.ORCID, d’Argent P.ORCID, Davidson A.ORCID, Davies J. E.ORCID, Davis A.ORCID, De Aguiar Francisco O.ORCID, De Angelis C.ORCID, de Boer J.ORCID, De Bruyn K.ORCID, De Capua S.ORCID, De Cian M.ORCID, De Freitas Carneiro Da Graca U.ORCID, De Lucia E.ORCID, De Miranda J. M.ORCID, De Paula L.ORCID, De Serio M.ORCID, De Simone P.ORCID, De Vellis F.ORCID, de Vries J. 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N.ORCID, Fan Y.ORCID, Fang B.ORCID, Fantini L.ORCID, Faria M.ORCID, Farmer K.ORCID, Fazzini D.ORCID, Felkowski L.ORCID, Feng M.ORCID, Feo M.ORCID, Fernandez Gomez M.ORCID, Fernez A. D.ORCID, Ferrari F.ORCID, Ferreira Rodrigues F.ORCID, Ferrillo M.ORCID, Ferro-Luzzi M.ORCID, Filippov S.ORCID, Fini R. A.ORCID, Fiorini M.ORCID, Fischer K. M.ORCID, Fitzgerald D. S.ORCID, Fitzpatrick C.ORCID, Fleuret F.ORCID, Fontana M.ORCID, Foreman L. F.ORCID, Forty R.ORCID, Foulds-Holt D.ORCID, Franco Sevilla M.ORCID, Frank M.ORCID, Franzoso E.ORCID, Frau G.ORCID, Frei C.ORCID, Friday D. A.ORCID, Fu J.ORCID, Fuehring Q.ORCID, Fujii Y.ORCID, Fulghesu T.ORCID, Gabriel E.ORCID, Galati G.ORCID, Galati M. D.ORCID, Gallas Torreira A.ORCID, Galli D.ORCID, Gambetta S.ORCID, Gandelman M.ORCID, Gandini P.ORCID, Ganie B.ORCID, Gao H.ORCID, Gao R.ORCID, Gao Y.ORCID, Gao Y.ORCID, Gao Y., Garau M.ORCID, Garcia Martin L. M.ORCID, Garcia Moreno P.ORCID, García Pardiñas J.ORCID, Garg K. G.ORCID, Garrido L.ORCID, Gaspar C.ORCID, Geertsema R. E.ORCID, Gerken L. L.ORCID, Gersabeck E.ORCID, Gersabeck M.ORCID, Gershon T.ORCID, Ghorbanimoghaddam Z., Giambastiani L.ORCID, Giasemis F. I.ORCID, Gibson V.ORCID, Giemza H. K.ORCID, Gilman A. L.ORCID, Giovannetti M.ORCID, Gioventù A.ORCID, Gironella Gironell P.ORCID, Giugliano C.ORCID, Giza M. A.ORCID, Gkougkousis E. L.ORCID, Glaser F. C.ORCID, Gligorov V. V.ORCID, Göbel C.ORCID, Golobardes E.ORCID, Golubkov D.ORCID, Golutvin A.ORCID, Gomes A.ORCID, Gomez Fernandez S.ORCID, Goncalves Abrantes F.ORCID, Goncerz M.ORCID, Gong G.ORCID, Gooding J. A.ORCID, Gorelov I. V.ORCID, Gotti C.ORCID, Grabowski J. P.ORCID, Granado Cardoso L. A.ORCID, Graugés E.ORCID, Graverini E.ORCID, Grazette L.ORCID, Graziani G.ORCID, Grecu A. T.ORCID, Greeven L. M.ORCID, Grieser N. A.ORCID, Grillo L.ORCID, Gromov S.ORCID, Gu C.ORCID, Guarise M.ORCID, Guittiere M.ORCID, Guliaeva V.ORCID, Günther P. 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Abstract
AbstractA method is presented to reconstruct charged particles with lifetimes between $$10\,\text {ps} $$
10
ps
and $$10\,\text {ns},$$
10
ns
,
which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the $${\varXi } ^- $$
Ξ
-
baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at $$\sqrt{s} =13\,\text {TeV},$$
s
=
13
TeV
,
corresponding to an integrated luminosity of 2.0$$\,\text {fb} ^{-1}$$
fb
-
1
collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.
Publisher
Springer Science and Business Media LLC
Reference38 articles.
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