Institut de Ciències del Cosmos (ICCUB): Recent submissions
Now showing items 21-40 of 1020
Evryscope and K2 Constraints on TRAPPIST-1 Superflare Occurrence and Planetary Habitability
The nearby ultracool dwarf TRAPPIST-1 possesses several Earth-sized terrestrial planets, three of which have equilibrium temperatures that may support liquid surface water, making it a compelling target for exoplanet ...
Very high-energy gamma-ray follow-up program using neutrino triggers from IceCube
We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is ...
Measurement of the properties of the Ξb∗0 baryon
We perform a search for near-threshold Ξb 0 resonances decaying to Ξb −π+ in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. We observe one ...
A hidden-charm S=-1 pentaquark from the decay of Λb into J/ψηΛ states
The hidden-charm pentaquark Pc(4450) observed recently by the LHCb collaboration may be of molecular nature, as advocated by some unitary approaches that also predict pentaquark partners in the strangeness S=−1 sector. In ...
The cosmological bias factor of damped Lyman alpha systems: dependence on metal line strength
We measure the cosmological bias factor of damped Ly α absorbers (DLAs) from their crosscorrelation with the Ly α forest absorption, as a function of the DLA metal strength, defined from an average of equivalent widths of ...
Gravitational waves in the presence of a cosmological constant
We derive the effects of a nonzero cosmological constant Λ on gravitational wave propagation in the linearized approximation of general relativity. In this approximation, we consider the situation where the metric can be ...
A study of the Z production cross-section in pp collisions at s√=7 TeV using tau final states
A measurement of the inclusive Z → ττ cross-section in pp collisions at s√=7TeV is presented based on a dataset of 1.0 fb−1 collected by the LHCb detector. Candidates for Z → τ τ decays are identified through reconstructed ...
Measurement of J/ψ production in pp collisions at √s=2.76TeV
The production of J/ψ mesons is studied with the LHCb detector using data from pp collisions at √s = 2.76 TeV corresponding to an integrated luminosity of 71 nb−1 . The differential cross-section for inclusive J/ψ production ...
Measurement of the forward Z boson production cross-section in pp collisions at √s=13 TeV
A measurement of the production cross-section of Z bosons in pp collisions at s√=13s=13 TeV is presented using dimuon and dielectron final states in LHCb data. The cross-section is measured for leptons with pseudorapidities ...
Axion-Higgs interplay in the two-Higgs-doublet model
he Zhitnitsky and Dine, Fischler and Srednicki (DFSZ) model is a natural extension of the two-Higgs-doublet model containing an additional singlet, endowed with a Peccei-Quinn symmetry, and leading to a physically acceptable ...
Signatures of extended radio emission from escaping electrons in the Lighthouse Nebula
Several supersonic runaway pulsar wind nebulae (sPWNe) with jet-like extended structures have been recently discovered in X-rays. If these structures are the product of electrons escaping the system and diffusing into the ...
Longitudinal Coherence in a Holographic Model of Asymmetric Collisions
As a model of the longitudinal structure in heavy ion collisions, we simulate gravitational shock wave collisions in anti-de Sitter space in which each shock is composed of multiple constituents. We find that all constituents ...
From manifolds to Lagrangian coherent structures in galactic bar models
We study the dynamics near the unstable Lagrangian points in galactic bar models using dynamical system tools in order to determine the global morphology of a barred galaxy. We aim at the case of non-autonomous models, in ...
Measurement of forward W and Z boson production in pp collisions at (Formula Presented.) TeV
Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of s√=8s=8 TeV. The analysis is based on an integrated luminosity of 2.0 fb−1 recorded with the LHCb ...
A precise measurement of the B-0 meson oscillation frequency
The oscillation frequency, Delta m(d), of B-0 mesons is measured using semileptonic decays with a D- or D*(-) meson in the final state. The data sample corresponds to 3.0 fb(-1) of pp collisions, collected by the LHCb ...
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging
We describe in detail a previously published measurement of C P violation in B 0 - ¯ B 0 oscillations, based on an integrated luminosity of 425.7 fb − 1 collected by the BABAR experiment at the PEPII collider. We apply ...
Woods-Saxon type of mean-field potentials with effective mass derived from the D1S Gogny force
Analytic average mean-field potentials of the Fermi-function (Woods-Saxon) type for the whole nuclear chart with space-dependent effective mass are deduced from the D1S Gogny force. Those ready-for-use potentials are ...
Analysis of the resonant components in ¯¯¯B0→J/ψπ+π−
Interpretation of C P violation measurements using charmonium decays, in both the ¯¯¯ B 0 and ¯¯¯ B 0 s systems, can be subject to changes due to "penguin" type diagrams. These effects can be investigated using measurements ...
Dalitz plot analysis of the D + → K − K + K + decay
The resonant structure of the doubly Cabibbo-suppressed decay D+→K−K+K+ is studied for the first time. The measurement is based on a sample of pp-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb ...
Detection of persistent VHE gamma-ray emission from PKS 1510-089 by the MAGIC telescopes during low states between 2012 and 2017
PKS 1510-089 is a flat spectrum radio quasar strongly variable in the optical and GeV range. To date, very high-energy (VHE, > 100 GeV) emission has been observed from this source either during long high states of optical ...
