Search for Lepton-Flavor Violation in Z-Boson Decays with τ Leptons with the ATLAS Detector
Articolo
Data di Pubblicazione:
2021
Abstract:
A search for lepton-flavor-violating Z -> e tau and Z -> mu tau decays with pp collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139 fb(-1) of Run 2 pp collisions at root s = 13 TeV and is combined with the results of a similar ATLAS search in the final state in which the tau lepton decays hadronically, using the same data set as well as Run 1 data. The addition of leptonically decaying tau leptons significantly improves the sensitivity reach for Z -> l tau decays. The Z -> l tau branching fractions are constrained in this analysis to B(Z -> e tau) < 7.0 x 10(-6) and B (Z -> mu tau) < 7.2 x 10(-6) at 95% confidence level. The combination with the previously published analyses sets the strongest constraints to date: B(Z -> e tau) < 5.0 x 10(-6) and B(Z -> mu tau) < 6.5 x 10(-6) at 95% confidence level.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Aad, G; Abbott, B; Abbott, D C; Abed Abud, A; Abeling, K; Abhayasinghe, D K; Abidi, S H; Abramowicz, H; Abreu, H; Abulaiti, Y; Abusleme Hoffman, A C; Acharya, B S; Achkar, B; Adam, L; Adam Bourdarios, C; Adamczyk, L; Adamek, L; Adelman, J; Adiguzel, A; Adorni, S; Adye, T; Affolder, A A; Afik, Y; Agapopoulou, C; Agaras, M N; Agarwala, J; Aggarwal, A; Agheorghiesei, C; Aguilar-Saavedra, J A; Ahmad, A; Ahmadov, F; Ahmed, W S; Ai, X; Aielli, G; Akatsuka, S; Akbiyik, M; Åkesson, T P A; Akimov, A V; Al Khoury, K; Alberghi, G L; Albert, J; Alconada Verzini, M J; Alderweireldt, S; Aleksa, M; Aleksandrov, I N; Alexa, C; Alexopoulos, T; Alfonsi, A; Alfonsi, F; Alhroob, M; Ali, B; Ali, S; Aliev, M; Alimonti, G; Allaire, C; Allbrooke, B M M; Allport, P P; Aloisio, A; Alonso, F; Alpigiani, C; Alunno Camelia, E; Alvarez Estevez, M; Alviggi, M G; Amaral Coutinho, Y; Ambler, A; Ambroz, L; Amelung, C; Amidei, D; Amor Dos Santos, S P; Amoroso, S; Amrouche, C S; Anastopoulos, C; Andari, N; Andeen, T; Anders, J K; Andrean, S Y; Andreazza, A; Andrei, V; Angelidakis, S; Angerami, A; Anisenkov, A V; Annovi, A; Antel, C; Anthony, M T; Antipov, E; Antonelli, M; Antrim, D J A; Anulli, F; Aoki, M; Aparisi Pozo, J A; Aparo, M A; Aperio Bella, L; Aranzabal, N; Araujo Ferraz, V; Arcangeletti, C; Arce, A T H; Arena, E; Arguin, J-F; Argyropoulos, S; Arling, J-H; Armbruster, A J; Armstrong, A; Arnaez, O; Arnold, H; Arrubarrena Tame, Z P; Artoni, G; Asada, H; Asai, K; Asai, S; Asbah, N A; Asimakopoulou, E M; Asquith, L; Assahsah, J; Assamagan, K; Astalos, R; Atkin, R J; Atkinson, M; Atlay, N B; Atmani, H; Atmasiddha, P A; Augsten, K; Auricchio, S; Austrup, V A; Avner, G; Avolio, G; Ayoub, M K; Azuelos, G; Babal, D; Bachacou, H; Bachas, K; Backman, F; Badea, A; Bagnaia, P; Bahrasemani, H; Bailey, A J; Bailey, V R; Baines, J T; Bakalis, C; Baker, O K; Bakker, P J; Bakos, E; Bakshi Gupta, D; Balaji, S; Balasubramanian, R; Baldin, E M; Balek, P; Ballabene, E; Balli, F; Balunas, W K; Balz, J; Banas, E; Bandieramonte, M; Bandyopadhyay, A; Barak, L; Barberio, E L; Barberis, D; Barbero, M; Barbour, G; Barends, K N; Barillari, T; Barisits, M-S; Barkeloo, J; Barklow, T; Barnett, B M; Barnett, R M; Baroncelli, A; Barone, G; Barr, A J; Barranco Navarro, L; Barreiro, F; Barreiro Guimarães da Costa, J; Barron, U; Barsov, S; Bartels, F; Bartoldus, R; Bartolini, G; Barton, A E; Bartos, P; Basalaev, A; Basan, A; Bashta, I; Bassalat, A; Basso, M J; Basson, C R; Bates, R L; Batlamous, S; Batley, J R; Batool, B; Battaglia, M; Bauce, M; Bauer, F; Bauer, P; Bawa, H S; Bayirli, A; Beacham, J B; Beau, T; Beauchemin, P H; Becherer, F; Bechtle, P; Beck, H P; Becker, K; Becot, C; Beddall, A J; Bednyakov, V A; Bee, C P; Beermann, T A; Begalli, M; Begel, M; Behera, A; Behr, J K; Beirao Da Cruz E Silva, C; Beirer, J F; Beisiegel, F; Belfkir, M; Bella, G; Bellagamba, L; Bellerive, A; Bellos, P; Beloborodov, K; Belotskiy, K; Belyaev, N L; Benchekroun, D; Benhammou, Y; Benjamin, D P; Benoit, M; Bensinger, J R; Bentvelsen, S; Beresford, L; Beretta, M; Berge, D; Bergeaas Kuutmann, E; Berger, N; Bergmann, B; Bergsten, L J; Beringer, J; Berlendis, S; Bernardi, G; Bernius, C; Bernlochner, F U; Berry, T; Berta, P; Berthold, A; Bertram, I A; Bessidskaia Bylund, O; Bethke, S; Betti, A; Bevan, A J; Bhatta, S; Bhattacharya, D S; Bhattarai, P; Bhopatkar, V S; Bi, R; Bianchi, R M; Biebel, O; Bielski, R; Biesuz, N V; Biglietti, M; Billoud, T R V; Bindi, M; Bingul, A; Bini, C; Biondi, S; Birch-Sykes, C J; Bird, G A; Birman, M; Bisanz, T; Biswal, J P; Biswas, D; Bitadze, A; Bittrich, C; Bjørke, K; Bloch, I; Blocker, C; Blue, A; Blumenschein, U; Blumenthal, J; Bobbink, G J; Bobrovnikov, V S; Bogavac, D; Bogdanchikov, A G; Bohm, C; Boisvert, V; Bokan, P; Bold, T; Bomben, M; Bona, M; Boonekamp, M; Booth, C D; Borbély, A G; Borecka-Bielska, H M; Borgna, L S; Borissov, G; Bortoletto, D; Boscherini, D; Bosman, M; Bossio Sola, J D; Bouaouda, K; Boudreau, J; Bouhova
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