Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Ubiali, Maria"'
Autor:
Ubiali, Maria
The unprecedented precision of experimental measurements at the Large Hadron Collider (LHC) and the increased statistics that will be reached in the High-Luminosity phase of the LHC (HL-LHC) are pushing the phenomenology community to a new precision
Externí odkaz:
http://arxiv.org/abs/2404.08508
Due to the pseudo-scalar nature of the axion-like particle (ALP), the CP- conserving production of two Higgs bosons via the ALP necessarily involves an additional Z or $\gamma$ boson. We examine the existing constraints from di-Higgs searches at Run
Externí odkaz:
http://arxiv.org/abs/2404.08062
Autor:
The NNPDF Collaboration, Ball, Richard D., Barontini, Andrea, Candido, Alessandro, Carrazza, Stefano, Cruz-Martinez, Juan, Del Debbio, Luigi, Forte, Stefano, Giani, Tommaso, Hekhorn, Felix, Kassabov, Zahari, Laurenti, Niccolò, Magni, Giacomo, Nocera, Emanuele R., Rabemananjara, Tanjona R., Rojo, Juan, Schwan, Christopher, Stegeman, Roy, Ubiali, Maria
We extend the existing leading (LO), next-to-leading (NLO), and next-to-next-to-leading order (NNLO) NNPDF4.0 sets of parton distribution functions (PDFs) to approximate next-to-next-to-next-to-leading order (aN$^3$LO). We construct an approximation
Externí odkaz:
http://arxiv.org/abs/2402.18635
Autor:
Costantini, Mark N., Hammou, Elie, Kassabov, Zahari, Madigan, Maeve, Mantani, Luca, Alvarado, Manuel Morales, Moore, James M., Ubiali, Maria
We present the open-source SIMUnet code, designed to fit Standard Model Effective Field Theory (SMEFT) Wilson coefficient alongside Parton Distribution Functions (PDFs) of the proton. SIMUnet can perform SMEFT global fits, as well as simultaneous fit
Externí odkaz:
http://arxiv.org/abs/2402.03308
Autor:
The NNPDF Collaboration, Ball, Richard D., Barontini, Andrea, Candido, Alessandro, Carrazza, Stefano, Cruz-Martinez, Juan, Del Debbio, Luigi, Forte, Stefano, Giani, Tommaso, Hekhorn, Felix, Kassabov, Zahari, Laurenti, Niccolò, Magni, Giacomo, Nocera, Emanuele R., Rabemananjara, Tanjona R., Rojo, Juan, Schwan, Christopher, Stegeman, Roy, Ubiali, Maria
We include uncertainties due to missing higher order corrections to QCD computations (MHOU) used in the determination of parton distributions (PDFs) in the recent NNPDF4.0 set of PDFs. We use our previously published methodology, based on the treatme
Externí odkaz:
http://arxiv.org/abs/2401.10319
Autor:
The NNPDF Collaboration, Ball, Richard D., Barontini, Andrea, Candido, Alessandro, Carrazza, Stefano, Cruz-Martinez, Juan, Del Debbio, Luigi, Forte, Stefano, Giani, Tommaso, Hekhorn, Felix, Kassabov, Zahari, Laurenti, Niccolò, Magni, Giacomo, Nocera, Emanuele R., Rabemananjara, Tanjona R., Rojo, Juan, Schwan, Christopher, Stegeman, Roy, Ubiali, Maria
We construct a set of parton distribution functions (PDFs), based on the recent NNPDF4.0 PDF set, that also include a photon PDF. The photon PDF is constructed using the LuxQED formalism, while QED evolution accounting for O(alpha), O(alpha alphas) a
Externí odkaz:
http://arxiv.org/abs/2401.08749
Autor:
Hammou, Elie, Kassabov, Zahari, Madigan, Maeve, Mangano, Michelangelo L., Mantani, Luca, Moore, James, Alvarado, Manuel Morales, Ubiali, Maria
The interpretation of LHC data, and the assessment of possible hints of new physics, require the precise knowledge of the proton structure in terms of parton distribution functions (PDFs). We present a systematic methodology designed to determine whe
Externí odkaz:
http://arxiv.org/abs/2307.10370
Publikováno v:
JHEP09(2023)063
In this paper we explore the coupling of a light axion-like particle (ALP) to top quarks. We use high-energy LHC probes, and examine both the direct probe to this coupling in associated production of a top-pair with an ALP, and the indirect probe thr
Externí odkaz:
http://arxiv.org/abs/2303.17634
Autor:
Kassabov, Zahari, Madigan, Maeve, Mantani, Luca, Moore, James, Alvarado, Manuel Morales, Rojo, Juan, Ubiali, Maria
We assess the impact of top quark production at the LHC on global analyses of parton distributions (PDFs) and of Wilson coefficients in the SMEFT, both separately and in the framework of a joint interpretation. We consider the broadest top quark data
Externí odkaz:
http://arxiv.org/abs/2303.06159
Autor:
The NNPDF Collaboration, Ball, Richard D., Cruz-Martinez, Juan, Del Debbio, Luigi, Forte, Stefano, Kassabov, Zahari, Nocera, Emanuele R., Rojo, Juan, Stegeman, Roy, Ubiali, Maria
We respond to the criticism raised by Courtoy et al., in which the faithfulness of the NNPDF4.0 sampling is questioned and an under-estimate of the NNPDF4.0 PDF uncertainties is implied. We list, correct, and clarify in detail a number of inaccurate
Externí odkaz:
http://arxiv.org/abs/2211.12961