Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$
A. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamInstitut für Hochenergiephysik, Vienna, AustriaJanik Walter AndrejkovicInstitut für Hochenergiephysik, Vienna, AustriaT. BergauerInstitut für Hochenergiephysik, Vienna, AustriaS. ChatterjeeInstitut für Hochenergiephysik, Vienna, AustriaK. DamanakisInstitut für Hochenergiephysik, Vienna, AustriaM. DragicevicInstitut für Hochenergiephysik, Vienna, AustriaA. E Del ValleInstitut für Hochenergiephysik, Vienna, AustriaPriya Sajid HussainInstitut für Hochenergiephysik, Vienna, AustriaM. JeitlerInstitut für Hochenergiephysik, Vienna, AustriaN KrammerInstitut für Hochenergiephysik, Vienna, AustriaL. LechnerInstitut für Hochenergiephysik, Vienna, AustriaD. LikoInstitut für Hochenergiephysik, Vienna, AustriaI. MikulecInstitut für Hochenergiephysik, Vienna, AustriaP. PaulitschInstitut für Hochenergiephysik, Vienna, AustriaF. M. PittersInstitut für Hochenergiephysik, Vienna, AustriaJ. SchieckInstitut für Hochenergiephysik, Vienna, AustriaR. SchöfbeckInstitut für Hochenergiephysik, Vienna, AustriaD. SchwarzInstitut für Hochenergiephysik, Vienna, AustriaM. SonawaneInstitut für Hochenergiephysik, Vienna, AustriaS. TemplInstitut für Hochenergiephysik, Vienna, AustriaW. WaltenbergerInstitut für Hochenergiephysik, Vienna, AustriaC.-E. WulzInstitut für Hochenergiephysik, Vienna, AustriaM. R. DarwishInstitute of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, EgyptX. JanssenUniversiteit Antwerpen, Antwerpen, BelgiumT. KelloUniversiteit Antwerpen, Antwerpen, BelgiumH. Rejeb SfarUniversiteit Antwerpen, Antwerpen, BelgiumP. Van MechelenUniversiteit Antwerpen, Antwerpen, BelgiumE. S. BolsVrije Universiteit Brussel, Brussels, BelgiumJ. D’HondtA. De MoorVrije Universiteit Brussel, Brussels, BelgiumM. DelcourtVrije Universiteit Brussel, Brussels, BelgiumH. El FahamVrije Universiteit Brussel, Brussels, BelgiumS. LowetteVrije Universiteit Brussel, Brussels, BelgiumS. MoortgatVrije Universiteit Brussel, Brussels, BelgiumA. MortonVrije Universiteit Brussel, Brussels, BelgiumD. MüllerVrije Universiteit Brussel, Brussels, BelgiumA. R. SahasransuVrije Universiteit Brussel, Brussels, BelgiumS. TavernierVrije Universiteit Brussel, Brussels, BelgiumW. Van DoninckVrije Universiteit Brussel, Brussels, BelgiumD. VanneromVrije Universiteit Brussel, Brussels, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Brussels, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Brussels, BelgiumL. FavartUniversité Libre de Bruxelles, Brussels, BelgiumD. HohovUniversité Libre de Bruxelles, Brussels, BelgiumJ. JaramilloUniversité Libre de Bruxelles, Brussels, BelgiumK. LeeKorea University, Seoul, KoreaM. MahdavikhorramiUniversité Libre de Bruxelles, Brussels, BelgiumI. MakarenkoUniversité Libre de Bruxelles, Brussels, BelgiumA. MalaraUniversité Libre de Bruxelles, Brussels, BelgiumS. ParedesUniversité Libre de Bruxelles, Brussels, BelgiumL. PétréUniversité Libre de Bruxelles, Brussels, BelgiumN. PostiauUniversité Libre de Bruxelles, Brussels, BelgiumLaurent ThomasUniversité Libre de Bruxelles, Brussels, BelgiumM. Vanden BemdenUniversité Libre de Bruxelles, Brussels, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Brussels, BelgiumP. VanlaerUniversité Libre de Bruxelles, Brussels, BelgiumD. DoburGhent University, Ghent, BelgiumJ. KnolleGhent University, Ghent, BelgiumLuka LambrechtGhent University, Ghent, BelgiumGianny MestdachGhent University, Ghent, BelgiumCésar RendónGhent University, Ghent, BelgiumAmrutha SamalanGhent University, Ghent, BelgiumK. SkovpenGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumN. Van Den BosscheGhent University, Ghent, BelgiumB. VermassenGhent University, Ghent, BelgiumLiam WezenbeekGhent University, Ghent, BelgiumA. BeneckeUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. BrunoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumF. BuryUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. CaputoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. DavidUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. DelaereUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumI. S. DonertasUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. GiammancoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. JaffelUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumSa. JainUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumV. Lemaı̂treUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. MondalUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. TaliercioUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumT. T. TranUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. VischiaUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumS. WertzUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. A. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilE. CoelhoCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilC. HenselCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilA. MoraesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilP. Rebello TelesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilW.L Aldá JúniorUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Alves Gallo PereiraUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Barroso Ferreira FilhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilH. MalbouissonUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilW. CarvalhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilJ. ChinellatoUniversidade Estadual de Campinas, Campinas, BrazilE. M. Da CostaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilG. G. Da SilveiraFederal University of Rio Grande do Sul, Porto Alegre, BrazilD. De Jesus DamiãoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilV. Dos Santos SousaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilS. Fonseca De SouzaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
ABI
Аннотация
Abstract The mass of the top quark is measured in 36.3 $$\,\text {fb}^{-1}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> of LHC proton–proton collision data collected with the CMS detector at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mspace/> <mml:mtext>Te</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math> . The measurement uses a sample of top quark pair candidate events containing one isolated electron or muon and at least four jets in the final state. For each event, the mass is reconstructed from a kinematic fit of the decay products to a top quark pair hypothesis. A profile likelihood method is applied using up to four observables per event to extract the top quark mass. The top quark mass is measured to be $$171.77\pm 0.37\,\text {Ge}\hspace{-.08em}\text {V} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>171.77</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.37</mml:mn> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math> . This approach significantly improves the precision over previous measurements.
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