Blar i Bergen Open Research Archive på forfatter "Mehtar-Tani, Yacine"
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Cone-Size Dependence of Jet Suppression in Heavy-Ion Collisions
Mehtar-Tani, Yacine; Pablos Alfonso, Daniel; Tywoniuk, Konrad (Journal article; Peer reviewed, 2021)The strong suppression of high-pT jets in heavy-ion collisions is a result of elastic and inelastic energy loss suffered by the jet multiprong collection of color charges that are resolved by medium interactions. Hence, ... -
Dynamical grooming of QCD jets
Mehtar-Tani, Yacine; Soto-Ontoso, Alba; Tywoniuk, Konrad (Journal article; Peer reviewed, 2020-02-06)We propose a new class of infrared-collinear and Sudakov safe observables with an associated jet grooming technique that removes dynamically soft and large angle branches. It is based on identifying the hardest branch in ... -
Improved opacity expansion for medium-induced parton splitting
Mehtar-Tani, Yacine; Tywoniuk, Konrad (Journal article; Peer reviewed, 2020-06-30)We present a new expansion scheme to compute the rate for parton splittings in dense and finite QCD media. In contrast to the standard opacity expansion, our expansion is performed around the harmonic oscillator whose ... -
Medium-induced radiative kernel with the Improved Opacity Expansion
Barata, João; Mehtar-Tani, Yacine; Soto-Ontoso, Alba; Tywoniuk, Konrad (Journal article; Peer reviewed, 2021)We calculate the fully differential medium-induced radiative spectrum at next-to-leading order (NLO) accuracy within the Improved Opacity Expansion (IOE) framework. This scheme allows us to gain analytical control of the ... -
Revisiting transverse momentum broadening in dense QCD media
Barata, João; Mehtar-Tani, Yacine; Soto-Ontoso, Alba; Tywoniuk, Konrad (Journal article; Peer reviewed, 2021)We reconsider the problem of transverse momentum broadening of a highly energetic parton suffering multiple scatterings in dense colored media, such as the thermal quark-gluon plasma or large nuclei. In the framework of ... -
Tagging boosted hadronic objects with dynamical grooming
Mehtar-Tani, Yacine; Tywoniuk, Konrad; Soto-Ontoso, Alba (Journal article; Peer reviewed, 2020)We evaluate the phenomenological applicability of the dynamical grooming technique, introduced by Y. Mehtar-Tani, A. Soto-Ontoso, and K. Tywoniuk [Phys. Rev. D 101, 034004 (2020)], to boosted W and top tagging at LHC ...