184 research outputs found

    Assessment Protocol to Evaluate the Degree of Conservation of Habitats of Community Interest: A Case Study for the 5220* HCI in the Westernmost Localities of Europe

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    The westernmost European nucleus of the 5220* Habitat of Community Interest (HCI) is located in the province of M谩laga (Andalusia). In this area, the 5220* HCI is characterized by the presence of scrublands of Gymnosporia senegalensis subsp. europaea. This is a relict species in Europe, with inhabits only in the southeast of the Iberian Peninsula. The westernmost Iberian nuclei of the 5220* HCI are constituted by three isolated nuclei (M谩laga鈥揜inc贸n de la Victoria; Torremolinos; and Pizarra). These nuclei have been only partially mapped. The objectives were: to map the 5220* HCI characterized by G. senegalensis subsp. europaea in detail; to evaluate its degree of conservation (DC); and to identify the chronosequences of the evolution of this habitat from 1957 to 2021, and its fragmentation. Our results have contributed to generating a 1:10,000 scale cartography of the habitat. In general, the DC obtained was from good to excellent. With an excellent DC value, one inland locality (Pizarra) was highlighted. However, the highest reduction in the value of DC was observed in the localities of Torremolinos and M谩laga鈥揜inc贸n de la Victoria which, in addition, have reduced the area of occupancy (AOO) and are fragmented. It is important to note that some areas of M谩laga鈥揜inc贸n de la Victoria reached excellent values of DC, indicating the need to carry out protection.This paper was supported by the project CEIJ-006- 鈥淓valuaci贸n del estado de conservaci贸n del litoral mediterr谩neo terrestre en el sureste ib茅rico (M谩laga-Granada, Espa帽a) mediante el uso de flora relevante, al贸ctonas invasoras y h谩bitats 92/43UE. Propuesta de gesti贸n鈥 of the Campus of International Global Excellence of the Sea. A. Picornell was supported by a postdoctoral grant financed by the Consejer铆a de Transformaci贸n Econ贸mica, Industria, Conocimiento y Universidades (Junta de Andaluc铆a, POSTDOC_21_00056). This publication has been also funded by the University of Malaga (鈥淚 Plan Propio de Investigaci贸n, Transferencia y Divulgaci贸n Cient铆fica de la Universidad de M谩laga鈥). Partial funding for open access charge: Universidad de M谩lag

    Observation of the Rare Decay of the 畏 Meson to Four Muons

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    A search for the rare 畏鈫捨+渭鈭捨+渭鈭 double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101鈥夆塮b鈭1. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the 畏鈫捨+渭鈭 decay as normalization, the branching fraction B(畏鈫捨+渭鈭捨+渭鈭)=[5.0卤0.8(stat)卤0.7(syst)卤0.7(B2渭)]脳10鈭9 is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions

    Search for new physics in multijet events with at least one photon and large missing transverse momentum in proton-proton collisions at 13 TeV