Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/87753
Título: | Search for heavy particles in the b-tagged dijet mass distribution with additional b-tagged jets in proton-proton collisions at p root s=13 TeV with the ATLAS experiment |
Autor(es): | Castro, Nuno Filipe Onofre, A. ATLAS Collaboration |
Data: | 2022 |
Editora: | American Physical Society (APS) |
Revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2022). Measurements of jet observables sensitive to b-quark fragmentation in (tt)over-bar events at the LHC with the ATLAS detector. PHYSICAL REVIEW D, 106(3). doi: 10.1103/PhysRevD.106.032008 |
Resumo(s): | Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36 fb-1 of s=13 TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark decay products are color connected to the proton beam remnants. The unfolded distributions are compared with the predictions of several modern Monte Carlo parton-shower generators and generator tunes, and a wide range of agreement with the data is observed, with p values varying from 5×10-4 to 0.98. These measurements complement similar measurements from e+e- collider experiments in which the b quarks originate from a color singlet Z/γ∗. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/87753 |
DOI: | 10.1103/PhysRevD.106.032008 |
ISSN: | 2470-0010 |
e-ISSN: | 2470-0029 |
Versão da editora: | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.106.032008 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevD.106.032008.pdf | 1,68 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons