Search for tt¯ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector
| Autor: | Aad, G, Abbott, B, Abbott, DC, Abed Abud, A, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, BS, Achkar, B, Adam, L, Adam Bourdarios, C, Adamczyk, L, Adamek, L, Adelman, J, Adersberger, M, Adiguzel, A, Adorni, S, Adye, T, Affolder, AA, Afik, Y, Agapopoulou, C, Agaras, MN, Aggarwal, A, Agheorghiesei, C, Aguilar-Saavedra, JA, Ahmad, A, Ahmadov, F, Ahmed, WS, Ai, X, Aielli, G, Akatsuka, S, Åkesson, TPA, Akilli, E, Akimov, AV, Al Khoury, K, Alberghi, GL, Albert, J, Alconada Verzini, MJ, Alderweireldt, S, Aleksa, M, Aleksandrov, IN, Alexa, C, Alexopoulos, T, Alfonsi, A, Alfonsi, F, Alhroob, M, Ali, B, Ali, S, Aliev, M, Alimonti, G, Allaire, C, Allbrooke, BMM, Allen, BW, Allport, PP, Aloisio, A, Alonso, F, Alpigiani, C, Alunno Camelia, E, Alvarez Estevez, M, Alviggi, MG, Amaral Coutinho, Y, Ambler, A, Ambroz, L, Amelung, C, Amidei, D, Amor Dos Santos, SP, Amoroso, S, Amrouche, CS, An, F, Anastopoulos, C, Andari, N, Andeen, T, Anders, JK, Andrean, SY, Andreazza, A, Andrei, V, Anelli, CR, Angelidakis, S, Angerami, A, Anisenkov, AV, Annovi, A, Antel, C, Anthony, MT, Antipov, E, Antonelli, M, Antrim, DJA, Anulli, F, Aoki, M, Aparisi Pozo, JA, Aparo, MA, Aperio Bella, L, Aranzabal Barrio, N, Araujo Ferraz, V, Araujo Pereira, R, Arcangeletti, C |
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| Přispěvatelé: | Aad, G [0000-0002-6665-4934], Abbott, B [0000-0002-5888-2734], Abed Abud, A [0000-0002-2788-3822], Abeling, K [0000-0002-1002-1652], Abhayasinghe, DK [0000-0002-2987-4006], Abidi, SH [0000-0002-8496-9294], AbouZeid, OS [0000-0002-8279-9324], Abramowicz, H [0000-0001-5329-6640], Abreu, H [0000-0002-1599-2896], Abulaiti, Y [0000-0003-0403-3697], Acharya, BS [0000-0002-8588-9157], Achkar, B [0000-0002-0288-2567], Adam, L [0000-0001-6005-2812], Adam Bourdarios, C [0000-0002-2634-4958], Adamczyk, L [0000-0002-5859-2075], Adamek, L [0000-0003-1562-3502], Adelman, J [0000-0002-1041-3496], Adiguzel, A [0000-0001-6644-0517], Adorni, S [0000-0003-3620-1149], Adye, T [0000-0003-0627-5059], Affolder, AA [0000-0002-9058-7217], Afik, Y [0000-0001-8102-356X], Agapopoulou, C [0000-0002-2368-0147], Agaras, MN [0000-0002-4355-5589], Aggarwal, A [0000-0002-1922-2039], Agheorghiesei, C [0000-0003-3695-1847], Aguilar-Saavedra, JA [0000-0002-5475-8920], Ahmadov, F [0000-0003-3644-540X], Ahmed, WS [0000-0003-0128-3279], Ai, X [0000-0003-3856-2415], Aielli, G [0000-0002-0573-8114], Akatsuka, S [0000-0002-1681-6405], Åkesson, TPA [0000-0003-4141-5408], Akilli, E [0000-0003-1309-5937], Akimov, AV [0000-0002-2846-2958], Al Khoury, K [0000-0002-0547-8199], Alberghi, GL [0000-0003-2388-987X], Albert, J [0000-0003-0253-2505], Alconada Verzini, MJ [0000-0003-2212-7830], Alderweireldt, S [0000-0002-8224-7036], Aleksa, M [0000-0002-1936-9217], Aleksandrov, IN [0000-0001-7381-6762], Alexa, C [0000-0003-0922-7669], Alfonsi, A [0000-0001-7406-4531], Alfonsi, F [0000-0002-0966-0211], Alhroob, M [0000-0001-7569-7111], Ali, B [0000-0001-8653-5556], Ali, S [0000-0001-5216-3133], Aliev, M [0000-0002-9012-3746], Alimonti, G [0000-0002-7128-9046], Allaire, C [0000-0003-4745-538X], Allbrooke, BMM [0000-0002-5738-2471], Allen, BW [0000-0002-1783-2685], Allport, PP [0000-0001-7303-2570], Aloisio, A [0000-0002-3883-6693], Alonso, F [0000-0001-9431-8156], Alpigiani, C [0000-0002-7641-5814], Alvarez Estevez, M [0000-0002-8181-6532], Alviggi, MG [0000-0003-0026-982X], Amaral Coutinho, Y [0000-0002-1798-7230], Ambler, A [0000-0003-2184-3480], Ambroz, L [0000-0002-0987-6637], Amidei, D [0000-0002-6814-0355], Amor Dos Santos, SP [0000-0001-7566-6067], Amoroso, S [0000-0001-5450-0447], An, F [0000-0002-3675-5670], Anastopoulos, C [0000-0003-1587-5830], Andari, N [0000-0002-4935-4753], Andeen, T [0000-0002-4413-871X], Anders, JK [0000-0002-1846-0262], Andrean, SY [0000-0002-9766-2670], Andreazza, A [0000-0001-5161-5759], Angelidakis, S [0000-0002-8274-6118], Angerami, A [0000-0001-7834-8750], Anisenkov, AV [0000-0002-7201-5936], Annovi, A [0000-0002-4649-4398], Antel, C [0000-0001-9683-0890], Anthony, MT [0000-0002-5270-0143], Antipov, E [0000-0002-6678-7665], Antonelli, M [0000-0002-2293-5726], Antrim, DJA [0000-0001-8084-7786], Anulli, F [0000-0003-2734-130X], Aoki, M [0000-0001-7498-0097], Aperio Bella, L [0000-0003-3942-1702], Aranzabal Barrio, N [0000-0001-9013-2274], Araujo Ferraz, V [0000-0003-1177-7563], Arcangeletti, C [0000-0001-8648-2896], Apollo - University of Cambridge Repository |
| Rok vydání: | 2020 |
| Předmět: |
Quantum Physics
hep-ex High Energy Physics::Phenomenology Molecular Atomic Nuclear & Particles Physics Hadron-Hadron scattering Particle and Plasma Physics Heavy quark production Hadron-Hadron scattering (experiments) Beyond Standard Model Jets High Energy Physics::Experiment Nuclear Nuclear Experiment Jet substructure Mathematical Physics |
| Zdroj: | Journal of High Energy Physics, vol 2020, iss 10 |
| Popis: | This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively. [Figure not available: see fulltext.] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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