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Tumasyan, A.;
Adam, W.;
Andrejkovic, J. W.;
Bergauer, T.;
Chatterjee, S.;
Damanakis, K.;
Dragicevic, M.;
Del Valle, A. Escalante;
Hussain, P. S.;
Jeitler, M.;
Krammer, N.;
Lechner, L.;
Liko, D.;
Mikulec, I.;
Paulitsch, P.;
Pitters, F. M.;
Schieck, J.;
Schöfbeck, R.;
Schwarz, D.;
Sonawane, M.;
Templ, S.;
Waltenberger, W.;
Wulz, C.-E.;
Darwish, M. R.;
[...]
Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$
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- Medientyp: E-Artikel
- Titel: Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$
- Beteiligte: Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Del Valle, A. Escalante; Hussain, P. S.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Templ, S.; Waltenberger, W.; Wulz, C.-E.; Darwish, M. R.; [...]
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Erschienen:
Springer Science and Business Media LLC, 2023
- Erschienen in: The European Physical Journal C
- Sprache: Englisch
- DOI: 10.1140/epjc/s10052-023-12050-4
- ISSN: 1434-6052
- Entstehung:
- Anmerkungen:
- Beschreibung: <jats:title>Abstract</jats:title><jats:p>The mass of the top quark is measured in 36.3<jats:inline-formula><jats:alternatives><jats:tex-math>$$\,\text {fb}^{-1}$$</jats:tex-math><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></jats:alternatives></jats:inline-formula> of LHC proton–proton collision data collected with the CMS detector at <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$</jats:tex-math><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></jats:alternatives></jats:inline-formula>. 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 <jats:inline-formula><jats:alternatives><jats:tex-math>$$171.77\pm 0.37\,\text {Ge}\hspace{-.08em}\text {V} $$</jats:tex-math><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></jats:alternatives></jats:inline-formula>. This approach significantly improves the precision over previous measurements.</jats:p>
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