CP violation measurements in three-body charmless B decays

This study reports \textit{CP} asymmetry measurements in charmless three-body decays of \textit{B} mesons, both using the Run II data from proton-proton collisions at a center-of-mass energy of 13 $TeV$, collected by the LHCb detector from 2015 to 2018, with an integrated luminosity of 5.9 $fb^{-1}$. Significant \textit{CP} asymmetries are observed in $B^\pm \rightarrow \pi^\pm \pi^+ \pi^-$ and $B^\pm \rightarrow K^\pm K^+ K^-$ decays, while the previously observed asymmetry in $B^\pm \rightarrow \pi^\pm K^+ K^-$ decays is confirmed, and the \textit{CP} asymmetry of $B^\pm \rightarrow K^\pm \pi^+ \pi^-$ decays is found to be compatible with zero. Additionally, a new method is used to measure the \textit{CP} asymmetry in charmless $B \rightarrow PV$ decays, showing significant asymmetry in $B^\pm \rightarrow K^\pm \pi^+ \pi^-$ decays dominated by $\rho(770)$, representing the first observation of \textit{CP} violation in this process. Other decay channels show \textit{CP} asymmetries compatible with zero.Comment: 6 pages, 3 figures, Proceedings of 12th Workshop on the CKM Unitarity Triangl

Formação interdisciplinar no jornalismo: uma experiência de articulação entre as disciplinas de Linguagem de Programação Visual e Oratória

Este artigo é resultado de uma pesquisa aplicada que interligou as disciplinas de Oratória e Linguagem de Programação Visual no curso de Jornalismo na UFMA de Imperatriz. A proposta foi testar uma didática interdisciplinar e prática com o intuito de promover uma reflexão inicial sobre a formação na área e a viabilidade em incluir nesse processo estudos sobre linguagem de programação por meio da criação de aplicativos. A proposta de levar alunos, sem experiência anterior com a linguagem de softwares, a produzir conteúdo e o próprio APP teve o objetivo de levantar a discussão sobre o quanto uma formação mais convergente, incluindo domínio técnico de algumas linguagens, como softwares, e interdisciplinar, pode contribuir para o desenvolvimento de um jornalista mais preparado o mercado e mais autônomo para atuar na condução da sua própria carreira

Formação interdisciplinar no jornalismo: uma experiência de articulação entre as disciplinas de Linguagem de Programação Visual e Oratória

Este artigo é resultado de uma pesquisa aplicada que interligou as disciplinas de Oratória e Linguagem de Programação Visual no curso de Jornalismo na UFMA de Imperatriz. A proposta foi testar uma didática interdisciplinar e prática com o intuito de promover uma reflexão inicial sobre a formação na área e a viabilidade em incluir nesse processo estudos sobre linguagem de programação por meio da criação de aplicativos. A proposta de levar alunos, sem experiência anterior com a linguagem de softwares, a produzir conteúdo e o próprio APP teve o objetivo de levantar a discussão sobre o quanto uma formação mais convergente, incluindo domínio técnico de algumas linguagens, como softwares, e interdisciplinar, pode contribuir para o desenvolvimento de um jornalista mais preparado o mercado e mais autônomo para atuar na condução da sua própria carreira

Cost Study for Implementing the Green Roof in Boa Vista/RR

Tendo como sustentabilidades como alternativas vi veis e concretas o telhado verde surge como uma inova o exitosa e tecnol gica para a constru o civil a fim de amenizar os efeitos nocivos ao meio ambiente desta ind stria em Boa Vista RR Assim foi estabelecida uma an lise do custo da instala o da cobertura verde em um prot tipo constru do no Centro Universit rio Est cioda Amaz nia em Boa Vista RR Ao analisar o custo da cobertura sustent vel mostrou-se significativo para o Estado de Roraima al m deuma promo o de qualidade socioambiental com custos acess veis para popula o boa vistens

Cystatin C based estimation of glomerular filtration rate and association with atherosclerosis imaging markers in people living with HIV

Introduction: Reduced estimated glomerular filtration rate (eGFR) is associated with increased risk of cardiovascular disease among people living with HIV (PLWH). It is unclear whether eGFR equations incorporating Cystatin C (CysC) measurements are more predictive of preclinical CVD than those using only creatinine (Cr). Objectives: The study aimed to determine which of the three Chronic Kidney Disease Epidemiology (CKD-EPI) eGFR equations is most associated with carotid intima media thickness (CIMT) and coronary artery calcium (CAC) score. Methods: This cross-sectional analysis of pooled data from three large cohorts compared the associations between the three CKD-EPI eGFR equations (Cr, CysC, and Cr-CysC) with CIMT and CAC score using multivariable regression analysis. eGFR and CIMT were analyzed as continuous variables. CAC scores were analyzed as a binary variable (detectable calcification versus nondetectable) and as a log10 Agatston score in those with detectable CAC. Results: 1487 participants were included, and of these 910 (562 HIV+, 348 HIV-) had CIMT measurements and 366 (296 HIV+, 70 HIV-) had CAC measurements available. In HIV- participants, GFR estimated by any CKD-EPI equation did not significantly correlate with CIMT or CAC scores. When PLWH were analyzed separately including HIV-specific factors, only GFR estimated using Cr-Cys C correlated with CIMT [β= -0.90, 95% CI (-1.67,-0.13) μm; p=0.023]. Similarly, eGFR correlated with Agatston scores only when using cystatin C-based eGFR [β= -8.63, 95% CI (-16.49,-0.77) HU; p=0.034]. Associations between other eGFR formulas and CAC did not reach statistical significance. Conclusion: In PLWH, preclinical atherosclerosis may be more closely correlated with eGFR using formulae that incorporate CysC measurements than Cr alone

Multidifferential study of identified charged hadron distributions in ZZ-tagged jets in proton-proton collisions at s=\sqrt{s}=13 TeV

Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a $Z$ boson. The charged-hadron distributions are studied longitudinally and transversely to the jet direction for jets with transverse momentum 20 $< p_{\textrm{T}} < 100$ GeV and in the pseudorapidity range $2.5 < \eta < 4$. The data sample was collected with the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.64 fb$^{-1}$. Triple differential distributions as a function of the hadron longitudinal momentum fraction, hadron transverse momentum, and jet transverse momentum are also measured for the first time. This helps constrain transverse-momentum-dependent fragmentation functions. Differences in the shapes and magnitudes of the measured distributions for the different hadron species provide insights into the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb public pages

Study of the B−→Λc+Λˉc−K−B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-} decay

The decay $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ is studied in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV using data corresponding to an integrated luminosity of 5 $\mathrm{fb}^{-1}$ collected by the LHCb experiment. In the $\Lambda_{c}^+ K^{-}$ system, the $\Xi_{c}(2930)^{0}$ state observed at the BaBar and Belle experiments is resolved into two narrower states, $\Xi_{c}(2923)^{0}$ and $\Xi_{c}(2939)^{0}$, whose masses and widths are measured to be $$m(\Xi_{c}(2923)^{0}) = 2924.5 \pm 0.4 \pm 1.1 \,\mathrm{MeV}, \\ m(\Xi_{c}(2939)^{0}) = 2938.5 \pm 0.9 \pm 2.3 \,\mathrm{MeV}, \\ \Gamma(\Xi_{c}(2923)^{0}) = \phantom{000}4.8 \pm 0.9 \pm 1.5 \,\mathrm{MeV},\\ \Gamma(\Xi_{c}(2939)^{0}) = \phantom{00}11.0 \pm 1.9 \pm 7.5 \,\mathrm{MeV},$$ where the first uncertainties are statistical and the second systematic. The results are consistent with a previous LHCb measurement using a prompt $\Lambda_{c}^{+} K^{-}$ sample. Evidence of a new $\Xi_{c}(2880)^{0}$ state is found with a local significance of $3.8\,\sigma$, whose mass and width are measured to be $2881.8 \pm 3.1 \pm 8.5\,\mathrm{MeV}$ and $12.4 \pm 5.3 \pm 5.8 \,\mathrm{MeV}$, respectively. In addition, evidence of a new decay mode $\Xi_{c}(2790)^{0} \to \Lambda_{c}^{+} K^{-}$ is found with a significance of $3.7\,\sigma$. The relative branching fraction of $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ with respect to the $B^{-} \to D^{+} D^{-} K^{-}$ decay is measured to be $2.36 \pm 0.11 \pm 0.22 \pm 0.25$, where the first uncertainty is statistical, the second systematic and the third originates from the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb public pages

Measurement of the ratios of branching fractions R(D∗)\mathcal{R}(D^{*}) and R(D0)\mathcal{R}(D^{0})

The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The tau lepton is identified in the decay mode $\tau^{-}\to\mu^{-}\nu_{\tau}\bar{\nu}_{\mu}$. The measured values are $\mathcal{R}(D^{*})=0.281\pm0.018\pm0.024$ and $\mathcal{R}(D^{0})=0.441\pm0.060\pm0.066$, where the first uncertainty is statistical and the second is systematic. The correlation between these measurements is $\rho=-0.43$. Results are consistent with the current average of these quantities and are at a combined 1.9 standard deviations from the predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb public pages