• Inicio
  • Resultados de la búsqueda
  • Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a Z Boson from pp Collisions at sqrt[s]=13  TeV.

Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a Z Boson from pp Collisions at sqrt[s]=13  TeV.

Physical review letters (2019-05-06)
M Aaboud, G Aad, B Abbott, O Abdinov, B Abeloos, D K Abhayasinghe, S H Abidi, O S AbouZeid, N L Abraham, H Abramowicz, H Abreu, Y Abulaiti, B S Acharya, S Adachi, L Adam, L Adamczyk, J Adelman, M Adersberger, A Adiguzel, T Adye, A A Affolder, Y Afik, C Agheorghiesei, J A Aguilar-Saavedra, F Ahmadov, G Aielli, S Akatsuka, T P A Åkesson, E Akilli, A V Akimov, G L Alberghi, J Albert, P Albicocco, M J Alconada Verzini, S Alderweireldt, M Aleksa, I N Aleksandrov, C Alexa, D Alexandre, T Alexopoulos, M Alhroob, B Ali, G Alimonti, J Alison, S P Alkire, C Allaire, B M M Allbrooke, B W Allen, P P Allport, A Aloisio, A Alonso, F Alonso, C Alpigiani, A A Alshehri, M I Alstaty, B Alvarez Gonzalez, D Álvarez Piqueras, M G Alviggi, B T Amadio, Y Amaral Coutinho, A Ambler, L Ambroz, C Amelung, D Amidei, S P Amor Dos Santos, S Amoroso, C S Amrouche, F An, C Anastopoulos, L S Ancu, N Andari, T Andeen, C F Anders, J K Anders, K J Anderson, A Andreazza, V Andrei, C R Anelli, S Angelidakis, I Angelozzi, A Angerami, A V Anisenkov, A Annovi, C Antel, M T Anthony, M Antonelli, D J A Antrim, F Anulli, M Aoki, J A Aparisi Pozo, L Aperio Bella, G Arabidze, J P Araque, V Araujo Ferraz, R Araujo Pereira, A T H Arce, R E Ardell, F A Arduh, J-F Arguin, S Argyropoulos
RESUMEN

This Letter presents a search for the production of a long-lived neutral particle (Z_{d}) decaying within the ATLAS hadronic calorimeter, in association with a standard model (SM) Z boson produced via an intermediate scalar boson, where Z→ℓ^{+}ℓ^{-} (ℓ=e, μ). The data used were collected by the ATLAS detector during 2015 and 2016 pp collisions with a center-of-mass energy of sqrt[s]=13  TeV at the Large Hadron Collider and correspond to an integrated luminosity of 36.1±0.8  fb^{-1}. No significant excess of events is observed above the expected background. Limits on the production cross section of the scalar boson times its decay branching fraction into the long-lived neutral particle are derived as a function of the mass of the intermediate scalar boson, the mass of the long-lived neutral particle, and its cτ from a few centimeters to one hundred meters. In the case that the intermediate scalar boson is the SM Higgs boson, its decay branching fraction to a long-lived neutral particle with a cτ approximately between 0.1 and 7 m is excluded with a 95% confidence level up to 10% for m_{Z_{d}} between 5 and 15 GeV.

MATERIALES
Referencia del producto
Marca
Descripción del producto

Sigma-Aldrich
2-Chloroethyl acrylate, contains >100 ppm MEHQ as inhibitor, 97%