Search for leptonic charge asymmetry in $$ t\overline{t}W $$ production in final states with three leptons at $$ \sqrt{s} $$ = 13 TeV

descriptionPublicationkeyboard_double_arrow_right Article , Research , Report , Preprint 05 Jul 2023Embargo end date: 01 Jan 2023 Germany, France, Spain, Italy, Italy, Italy, Italy, Italy, South Africa, Italy, Germany, Germany, Italy, Germany, Italy, Poland, South Africa, Italy, Italy, Switzerland English Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,023 (eissn: 1029-8479,

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Authors: Aad, Georges; Abbott, Braden Keim; Abbott, D. C.; Abeling, Kira; Abidi, Haider; Aboulhorma, Asmaa; Abramowicz, Halina; +193 Authors

Aad, Georges; Abbott, Braden Keim; Abbott, D. C.; Abeling, Kira; Abidi, Haider; Aboulhorma, Asmaa; Abramowicz, Halina; Abreu, Henso; Abulaiti, Yiming; Abusleme Hoffman, A. C.; Acharya, Bobby Samir; Adam Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Addepalli, Sagar; Adelman, Jahred; Adiguzel, Aytul; Adorni Braccesi Chiassi, Sofia; Adye, Tim; Affolder, Tony; Affolder, A. A.; Afik, Yoav; Agaras, Merve Nazlim; Agarwala, Jinky; Aggarwal, Anamika; Agheorghiesei, Catalin; Aguilar Saavedra, Juan Antonio; Ahmad, Ammara; Ahmadov, Faig; Ahmed, Waleed Syed; Ahuja, Sudha; Ai, Xiaocong; Aielli, Giulio; Ait Tamlihat, Malak; Aitbenchikh, Brahim; Aizenberg, Iakov; Akbiyik, Melike; Åkesson, T. P. A.; Akimov, Andrei; Al Khoury, Konie; Alberghi, Gian Luigi; Albert, Justin; Albicocco, Pietro; Alderweireldt, Sara; Aleksa, Martin; Aleksandrov, I. N.; Alexa, Calin; Alexopoulos, Theodoros; Alfonsi, Alice; Alfonsi, Fabrizio; Alhroob, Muhammad; Ali, Babar; Ali, Shahzad; Aliev, Malik; Alimonti, Gianluca; Alkakhi, Wael; Allaire, Corentin; Allbrooke, Benedict; Allendes Flores, Cristian Andres; Allport, Philip Patrick; Aloisio, Alberto; Alonso, Francisco; Alpigiani, Cristiano; Alvarez Estevez, Manuel; Alvarez Fernandez, Adrian; Alviggi, Mariagrazia; Aly, Mohamed; Do Amaral Coutinho, Yara; Ambler, Alessandro; Amelung, Christoph; Amerl, Maximilian; Ames, Christoph; Amidei, Dante; Amor Dos Santos, Susana Patricia; Amos, Kieran Robert; Ananiev, Viktor; Anastopoulos, Christos; Andeen, Timothy Robert; Anders, John Kenneth; Andrean, Stefio Yosse; Andreazza, Attilio; Angelidakis, Stylianos; Angerami, Aaron; Anisenkov, Alexey; Annovi, Alberto; Antel, Claire; Anthony, Matthew Thomas; Antipov, Egor; Antonelli, Mario; Antrim, Daniel Joseph; Anulli, Fabio; Aoki, Masato; Aoki, Takumi; Aparisi Pozo, Javier Alberto; Aparo, Marco; Aperio Bella, Ludovica; Appelt, Christian; Aranzabal Barrio, Nordin; Araujo Ferraz, Victor; Arcangeletti, Chiara; Arce, Ayana Tamu; Arena, Eloisa; Arguin, Jean-Francois; Argyropoulos, Spyros; Arling, Jan-Hendrik; Armbruster, Aaron James; Arnaez, Olivier; Arnold, Hannah; Arrubarrena Tame, Zulit Paola; Artoni, Giacomo; Asada, Haruka; Asai, Kanae; Asai, Shoji; Asbah, Nedaa Alexandra; Assahsah, Jihad; Assamagan, Ketevi Adikle; Astalos, Robert; Atkin, Ryan Justin; Atkinson, Markus Julian; Atlay, Naim Bora; Atmani, Hicham; Atmasiddha, Prachi; Augsten, Kamil; Auricchio, Silvia; Auriol, Adrien; Austrup, Volker Andreas; Avner, Gal; Avolio, Giuseppe; Axiotis, Konstantinos; Azuelos, Georges; Babal, Dominik; Bachacou, Henri; Bachas, Konstantinos; Bachiu, Alexander; Backman, Karl Filip; Badea, Anthony; Bagnaia, Paolo; Bahmani, Marzieh; Bailey, A. J.; Bailey, Virginia; Baines, J. T.; Bakalis, Christos; Baker, Keith; Bakker, Pepijn Johannes; Bakos, Evelin; Bakshi Gupta, Debottam; Balaji, Shyam; Balasubramanian, Rahul; Baldin, Evgenii; Balek, Petr; Ballabene, Eric; Balli, Fabrice; Baltes, Lisa Marie; Balunas, William Keaton; Balz, Johannes; Banas, Elzbieta; Bandieramonte, Marilena; Bandyopadhyay, Anjishnu; Bansal, Shubham; Barak, Liron; Barberio, Elisabetta; Barberis, Dario; Barbero, Marlon Benoit; Barbour, Gregory; Barends, Kevin Nicholas; Barillari, Teresa; Barisits, Martin; Barklow, Tim; Barnett, Michael; Baron, Petr; Baron Moreno, D. A.; Baroncelli, Toni; Baroncelli, A.; Barone, Gaetano; Barr, A. J.; Barranco Navarro, Laura; Barreiro Alonso, Fernando; Barreiro Guimaraes Da Costa, Joao; Barron, Uriel; Barros Teixeira, M. G.; Barsov, Sergey; Bartels, Falk; Bartoldus, Rainer; Barton, Adam Edward; Bartos, Pavol; Basalaev, Artem; Basan, Alexander; Baselga Bacardit, Marta; Bashta, Inna; Bassalat, Ahmed; Basso, Matthew Joseph; Basson, Candice Ruth; Bates, Richard; Batlamous, Souad; Batley, Richard; Batool, Binish; Battaglia, Marco; Battulga, Daariimaa; Bauce, Matteo; Bauer, Patrick;

Search for leptonic charge asymmetry in $$ t\overline{t}W $$ production in final states with three leptons at $$ \sqrt{s} $$ = 13 TeV

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Abstract

Abstract A search for the leptonic charge asymmetry ($$ {A}_{\textrm{c}}^{\ell } $$ A c ℓ ) of top-quark-antiquark pair production in association with a W boson ($$ t\overline{t}W $$ t t ¯ W ) is presented. The search is performed using final states with exactly three charged light leptons (electrons or muons) and is based on $$ \sqrt{s} $$ s = 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. A profile-likelihood fit to the event yields in multiple regions corresponding to positive and negative differences between the pseudorapidities of the charged leptons from top-quark and top-antiquark decays is used to extract the charge asymmetry. At reconstruction level, the asymmetry is found to be −0.12 ± 0.14 (stat.) ± 0.05 (syst.). An unfolding procedure is applied to convert the result at reconstruction level into a charge-asymmetry value in a fiducial volume at particle level with the result of −0.11 ± 0.17 (stat.) ± 0.05 (syst.). The Standard Model expectations for these two observables are calculated using Monte Carlo simulations with next-to-leading-order plus parton shower precision in quantum chromodynamics and including next-to-leading-order electroweak corrections. They are $$ -{0.084}_{-0.003}^{+0.005} $$ − 0.084 − 0.003 + 0.005 (scale) ± 0.006 (MC stat.) and $$ -{0.063}_{-0.004}^{+0.007} $$ − 0.063 − 0.004 + 0.007 (scale) ± 0.004 (MC stat.) respectively, and in agreement with the measurements.

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Germany, France, Spain, Italy, Italy, Italy, Italy, Italy, South Africa, Italy, Germany, Germany, Italy, Germany, Italy, Poland, South Africa, Italy, Italy, Switzerland

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Keywords

electron, numerical calculations, Monte Carlo, lepton, 13000 GeV-cms, top physics, Muon, charge asymmetry, QC770-798, Charge: asymmetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Hadron-Hadron Scattering; Top Physics, final state: ((n)jet 3lepton), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 025.063, top, pair production, info:eu-repo/classification/ddc/530, hadron-hadron scattering, unfolding, Perturbation theory: higher-order, Data analysis method, perturbation theory: higher-order, higher-order: 1, Antiquark: pair production, ATLAS, Top Physics, Quantum chromodynamics: perturbation theory, Parton: showers, higher-order, 1, P p: scattering, CERN LHC Coll, Final state: ((n)jet 3lepton), Electroweak interaction: correction, Higher-order: 1, W: associated production, top: pair production, numerical calculations: Monte Carlo, top+X, antiquark: pair production, p p: scattering, data analysis method, CERN Lab, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ttV, -, ttW, Electron, 530, parton: showers, Hadron-Hadron Scattering, Top Physics, Nuclear and particle physics. Atomic energy. Radioactivity, muon, quantum chromodynamics, TeV, Experimental results, Top: pair production, quantum chromodynamics: perturbation theory, Hadron-Hadron Scattering, Numerical calculations: Monte Carlo, P p: colliding beams, antiquark, pair production, charge, asymmetry, 541, High Energy Physics - Experiment; High Energy Physics - Experiment, electroweak interaction: correction, rapidity, parton, showers, electroweak interaction, correction, charge: asymmetry, Rapidity, p p: colliding beams, 500.2, experimental results

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