| 1. |
- Abele, H., et al.
(författare)
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Particle physics at the European Spallation Source
- 2023
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Ingår i: Physics reports. - : Elsevier. - 0370-1573 .- 1873-6270. ; 1023, s. 1-84
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Forskningsöversikt (refereegranskat)abstract
- Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world’s brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches).
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| 2. |
- Cirigliano, V., et al.
(författare)
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A complete update of ε0/ε in the standard model
- 2019
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Ingår i: European Physical Society Conference on High Energy Physics (EPS-HEP2019). - Trieste, Italy : Sissa Medialab. - 1824-8039. ; 364
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Konferensbidrag (refereegranskat)abstract
- The recent release of improved lattice data has revived again the interest on precise theoretical calculations of the direct CP-violation ratio ε0/ε. We present a complete update of the Standard Model prediction [1,2], including a new re-analysis of isospin-breaking corrections which are of vital importance in the theoretical determination of this observable. The Standard Model prediction, Re(ε0/ε) = (14±5)·10−4, turns out to be in good agreement with the experimental measurement.
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| 3. |
- Cirigliano, V., et al.
(författare)
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Isospin-breaking contributions to ϵ ′/ϵ
- 2020
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Ingår i: International Conference on Kaon Physics 2019 10-13 September 2019, University of Perugia, Italy. - : IOP Publishing. - 1742-6588. ; 1526
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Konferensbidrag (refereegranskat)abstract
- We present an updated analysis of isospin-violating corrections to ϵ0=ϵ in the framework of chiral perturbation theory, taking advantage of the currently improved knowledge on quark masses and nonperturbative parameters. The role of the different ingredients entering into the analysis is carefully assessed. Our final result is ωeff = 0:110 +0:090 -0:088 [1].
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| 4. |
- Cirigliano, V., et al.
(författare)
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Isospin-violating contributions to ∈′/∈
- 2020
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Ingår i: Journal of High Energy Physics. - 1029-8479. ; 2020:2
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Tidskriftsartikel (refereegranskat)abstract
- The known isospin-breaking contributions to the K → ππ amplitudes are reanalyzed, taking into account our current understanding of the quark masses and the relevant non-perturbative inputs. We present a complete numerical reappraisal of the direct CP-violating ratio ∈′/∈, where these corrections play a quite significant role. We obtain the Standard Model prediction Re (∈′/∈) = (14 ± 5) · 10−4, which is in very good agreement with the measured ratio. The uncertainty, which has been estimated conservatively, is dominated by our current ignorance about 1/NC-suppressed contributions to some relevant chiral-perturbation-theory low-energy constants.
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| 5. |
- Cirigliano, V., et al.
(författare)
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Theoretical status of ϵ ′/ϵ
- 2020. - 1
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Ingår i: Journal of Physics: Conference Series : International Conference on Kaon Physics 2019 10-13 September 2019, University of Perugia, Italy - International Conference on Kaon Physics 2019 10-13 September 2019, University of Perugia, Italy. - : IOP Publishing. - 1742-6588. ; 1526
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Konferensbidrag (refereegranskat)abstract
- We briefly overview the historical controversy around Standard Model predictions of ϵ ′/ϵ and clarify the underlying physics. A full update of this important observable is presented, with all known short-and long-distance contributions, including isospin-breaking corrections. The current Standard Model prediction, Re(ϵ ′/ϵ) = (14 ± 5) • 10-4 [1, 2], is in excellent agreement with the experimentally measured value.
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| 6. |
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| 7. |
- Ravanelli, R., et al.
(författare)
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Monitoring the impact of land cover change on surface urban heat island through Google Earth Engine : Proposal of a global methodology, first applications and problems
- 2018
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Ingår i: Remote Sensing. - : MDPI AG. - 2072-4292. ; 10:9
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Tidskriftsartikel (refereegranskat)abstract
- All over the world, the rapid urbanization process is challenging the sustainable development of our cities. In 2015, the United Nation highlighted in Goal 11 of the SDGs (Sustainable Development Goals) the importance to "Make cities inclusive, safe, resilient and sustainable". In order to monitor progress regarding SDG 11, there is a need for proper indicators, representing different aspects of city conditions, obviously including the Land Cover (LC) changes and the urban climate with its most distinct feature, the Urban Heat Island (UHI). One of the aspects of UHI is the Surface Urban Heat Island (SUHI), which has been investigated through airborne and satellite remote sensing over many years. The purpose of this work is to show the present potential of Google Earth Engine (GEE) to process the huge and continuously increasing free satellite Earth Observation (EO) Big Data for long-term and wide spatio-temporal monitoring of SUHI and its connection with LC changes. A large-scale spatio-temporal procedure was implemented under GEE, also benefiting from the already established Climate Engine (CE) tool to extract the Land Surface Temperature (LST) from Landsat imagery and the simple indicator Detrended Rate Matrix was introduced to globally represent the net effect of LC changes on SUHI. The implemented procedure was successfully applied to six metropolitan areas in the U.S., and a general increasing of SUHI due to urban growth was clearly highlighted. As a matter of fact, GEE indeed allowed us to process more than 6000 Landsat images acquired over the period 1992-2011, performing a long-term and wide spatio-temporal study on SUHI vs. LC change monitoring. The present feasibility of the proposed procedure and the encouraging obtained results, although preliminary and requiring further investigations (calibration problems related to LST determination from Landsat imagery were evidenced), pave the way for a possible global service on SUHI monitoring, able to supply valuable indications to address an increasingly sustainable urban planning of our cities.
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| 8. |
- Ravanelli, R., et al.
(författare)
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Monitoring urban heat island through google earth engine : Potentialities and difficulties in different cities of the United States
- 2018
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Ingår i: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. - : International Society for Photogrammetry and Remote Sensing. ; , s. 1467-1472
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Konferensbidrag (refereegranskat)abstract
- The aim of this work is to exploit the large-scale analysis capabilities of the innovative Google Earth Engine platform in order to investigate the temporal variations of the Urban Heat Island phenomenon as a whole. A intuitive methodology implementing a large-scale correlation analysis between the Land Surface Temperature and Land Cover alterations was thus developed. The results obtained for the Phoenix MA are promising and show how the urbanization heavily affects the magnitude of the UHI effects with significant increases in LST. The proposed methodology is therefore able to efficiently monitor the UHI phenomenon.
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