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Cross-section measurements of top-quark pair production where the hadronically decaying top quark has transverse momentum greater than $355$ GeV are presented using 139 fb$^{-1}$ of data collected by the ATLAS experiment during proton-proton collisions at the LHC. The fiducial cross-section at $\sqrt{s}=13$ TeV is measured to be $\sigma = 1.267 \pm 0.005 \pm 0.053$ pb, where the uncertainties reflect the limited number of data events and the systematic uncertainties, giving a total uncertainty of $4.2\%$. The cross-section is measured differentially as a function of kinematic variables characterising the $t\bar{t}$ system and also as a function of variables that characterise the additional radiation in the events. The results are compared with various Monte Carlo generators, including comparisons where the generators are reweighted to match a parton-level calculation at next-to-next-to-leading order. The reweighting improves the agreement between data and theory. The measured distribution of the top-quark transverse momentum is used to set limits on the Wilson coefficients of the dimension-six operators $O_{tG}$ and $O_{tq}^{8}$ in the effective field theory framework. The obtained $95\%$ credibility intervals are $C_{tG} \in [-0.68, 0.21]$ and $C_{tq}^{8} \in [-0.30, 0.36]$. 1-39 (2021).

This deliverable is the second and final release of the EOSC Service Architecture. It sets the foundations characterising the EOSC System:(i) Its functionalities are provisioned as-a-Service; (ii) It is a highly distributed, evolving and heterogeneous hybrid cloud; (iii)Its operation and development is regulated by a set of Rules of Participation; (iv) It is modelled as an open and evolving System of Systems (SoS) where the component systems providing services include existing and emerging Research Infrastructures (including e-Infrastructures) and other types of Service Providers; (v) EOSC services provision is based on an open and evolving set of EOSC Nodes spread across several organisations and regions; (vi) EOSC Services should promote and support FAIRness. The deliverable identifies 47 classes of services that can be considered at this stage of development as the "Minimal Viable Product" able to match the EOSC overall goal. Such services include cross-cutting services together with services specifically envisaged to serve researchers, research administrators, third-party service providers as well as EOSC managers, service providers and service suppliers. This deliverable briefly highlights major contextual aspects already introduced in D5.1 and then describes the identified classes of services. The deliverable also discusses aspects related to "how" the system can/should be developed. The notions of "federation" and "interoperability" related to the building of this EOSC System are addressed highlighting the importance of dealing with these two concepts per-single service rather than from the perspective of EOSC as a whole.

The EOSC Metadata Cataloguing and Indexing service comprises the management of metadata in the whole life cycle from generation up to uploading and indexing metadata in a searchable catalogue.

We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Sklodowska-Curie Actions, European Union; Investissements d' Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF(Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of comp Measurements of the azimuthal anisotropy in lead–lead collisions at sNN−−−√ = 5.02 TeV are presented using a data sample corresponding to 0.49 nb−1 integrated luminosity collected by the ATLAS experiment at the LHC in 2015. The recorded minimum-bias sample is enhanced by triggers for “ultra-central” collisions, providing an opportunity to perform detailed study of flow harmonics in the regime where the initial state is dominated by fluctuations. The anisotropy of the charged-particle azimuthal angle distributions is characterized by the Fourier coefficients, v2–v7, which are measured using the two-particle correlation, scalar-product and event-plane methods. The goal of the paper is to provide measurements of the differential as well as integrated flow harmonics vn over wide ranges of the transverse momentum, 0.5

A search in an all-jet final state for new massive resonances decaying to $\text{ W }{}{}\text{ W }{}{}$, $\text{ W }{}{}\text{ Z }{}{}$, or $\text{ Z }{}{}\text{ Z }{}{}$ boson pairs using a novel analysis method is presented. The analysis is performed on data corresponding to an integrated luminosity of 77.3 $\,\text {fb}^{-1}$ recorded with the CMS experiment at the LHC at a centre-of-mass energy of 13 $\text {Te}\text {V}$. The search is focussed on potential narrow-width resonances with masses above 1.2 $\text {Te}\text {V}$, where the decay products of each $\text{ W }{}{}$ or $\text{ Z }{}{}$ boson are expected to be collimated into a single, large-radius jet. The signal is extracted using a three-dimensional maximum likelihood fit of the two jet masses and the dijet invariant mass, yielding an improvement in sensitivity of up to 30% relative to previous search methods. No excess is observed above the estimated standard model background. In a heavy vector triplet model, spin-1 ${\text {Z}}^{\prime }$ and ${\text {W}}^{\prime }$ resonances with masses below 3.5 and 3.8 $\text {Te}\text {V}$, respectively, are excluded at 95% confidence level. In a bulk graviton model, upper limits on cross sections are set between 27 and 0.2 $\,\text {fb}$ for resonance masses between 1.2 and 5.2 $\text {Te}\text {V}$, respectively. The limits presented in this paper are the best to date in the dijet final state. The European physical journal / C Particles and fields C 80(3), 237 (2020). doi:10.1140/epjc/s10052-020-7773-5 Published by Springer, Heidelberg

As a TCOM area, this specification describes Security, i.e. the standards and specifications for operational security, or “cybersecurity.” Ultimately, the purpose of security, in this sense, is to ensure that the infrastructure is trustworthy, and participants are able to carry out their legitimate work and collaborations, while protecting the infrastructure and data from unauthorised parties. In order to ensure that participants in e-infrastructures, research infrastructures, and identity federations (such as those operated by NRENs) can reduce the risk of security incidents, and collaborate on investigating, managing, and resolving security incidents, it is necessary to have a shared security operations framework. Specifically, this will cover • best practices, • security contacts, • processes for assessing severity (and hence urgency), • traceability of users, • defining, updating, and tracking users’ acceptance of acceptable use policies. In addition, the standards cover how the compliance is asserted in a machine readable way. There are also constraints on human readable information but the specification on how to implement these constraints is left to the federation operator and/or participants. It should also be noted that the wider issue of establishing, maintaining, and restoring trust – between organisations, communities, and infrastructures – is not covered here.

Comprehensive report of the second year of the StratusLab project.

This paper presents a study of $WW\gamma $ and $WZ\gamma $ triboson production using events from proton–proton collisions at a centre-of-mass energy of $\sqrt{s} = \text{8}\,\text{TeV}$ recorded with the ATLAS detector at the LHC and corresponding to an integrated luminosity of 20.2 fb$^{-1}$ . The $WW\gamma $ production cross-section is determined using a final state containing an electron, a muon, a photon, and neutrinos ( $e\nu \mu \nu \gamma $ ). Upper limits on the production cross-section of the $e\nu \mu \nu \gamma $ final state and the $WW\gamma $ and $WZ\gamma $ final states containing an electron or a muon, two jets, a photon, and a neutrino ( $e\nu jj\gamma $ or $\mu \nu jj\gamma $ ) are also derived. The results are compared to the cross-sections predicted by the Standard Model at next-to-leading order in the strong-coupling constant. In addition, upper limits on the production cross-sections are derived in a fiducial region optimised for a search for new physics beyond the Standard Model. The results are interpreted in the context of anomalous quartic gauge couplings using an effective field theory. Confidence intervals at 95% confidence level are derived for the 14 coupling coefficients to which $WW\gamma $ and $WZ\gamma $ production are sensitive. The European physical journal / C 77(9), 646 (2017). doi:10.1140/epjc/s10052-017-5180-3 Published by Springer, Berlin

AGINFRA+ aspires to provide a sustainable channel addressing adjacent but not fully connected user communities around Food & Agriculture, by exploiting core European e-infrastructures such as EGI.eu, OpenAIRE, EUDAT and D4Science. To this end, the project develops, extends and provides the necessary specifications and components for allowing the rapid and intuitive development of variegating data analysis workflows, where the functionalities for data storage and indexing, algorithm execution, results visualization and deployment are provided by specialized services utilizing European large-scale, cloud-based infrastructural assets. Furthermore, AGINFRA+ aspires to establish a framework facilitating the transparent documentation, exploitation and publication of research assets (datasets, mathematical models, software components and publications), to enable their reuse and repurposing from the wider research community. Thus, the vision of AGINFRA+ project is to develop a common technical infrastructure that could initially serve three user communities (namely, Agro-climatic and Economic Modelling, Food Safety & Risk Assessment and Food Security) and it could be evolved to an AGINFRA food cloud demonstrator that will be positioned as the European Open Science Cloud (EOSC)1 agri-food thematic cloud. WP8 concentrates on the dissemination of the project and its results among the identified target groups by using online and offline dissemination channels and activities. More specifically, WP8 focuses on creating awareness and engaging further the scientific communities that are related to each one of the three user communities of the project (namely, Agro-climatic and Economic Modelling, Food Safety & Risk Assessment and Food Security) and (b) creating general awareness about AGINFRA+ and the types of innovative services that scientists may use, in other scientific communities and networks (Task 8.2). Moreover, linking AGINFRA+ with international initiatives and networks that are working on open, big and interoperable data for agriculture and nutrition towards contributing to the corresponding standardisation work falls within the scope of WP8 under Task 8.3. Additionally, alignment of the work held in AGINFRA+ with the conception, development and deployment of the European Open Science Cloud (EOSC) and its integration with the existing core e-infrastructures is part of Task 8.4. Finally, WP8 aims at establishing a sustainable legal entity form (through a not-for-profit association) for the further operation and evolution of AGINFRA+ as a joint venture of involved stakeholders of innovative services that scientists may use, in other scientific communities and network (Task 8.5). WP8 has created until M18 an online infrastructure (including project website and social media channels) and a set of print dissemination materials to promote the project (Annex D). By the end of M18, the project website has been visited by 523 people (unique visitors). The social media channels count 251 community members (Facebook) and 849 followers (Twitter). These numbers are expected to be further increased as soon as additional tangible results are available via the deployed Virtual Research Environments (VREs) for the targeted project communities. Finally, the project has organized 13 major events with selected group of researchers and practitioners (see Section 3.1 and Annex A and Annex B). Moreover, the project has conducted 29 AGINFRA+ presentations and panel participations at scientific conferences, workshops and other events and was represented at 4 conferences and fairs with a booth or distributing leaflets (see Section 3.2 and Annex B). In total, more than 4615 stakeholders have been reached and 7 scientific publications (3 journal papers, 2 conference papers and 1 book chapter) were published or have submitted for publication (See Section 3.3 and Annex C). This deliverable describes online and offline dissemination channels, as well as activities, which were conducted until M18 of the project. Moreover, it provides an outlook of the dissemination activities that are planned for the next 18 months of the project, namely M19-M36. Furthermore, Key Performance Indicators are described and applied to measure the effectiveness of dissemination until M18 and allow measuring the progress in the next 18 months of the project.

A search for CP violation in $Λ_{b}^0 → pK^−$ and $Λ_b ^0 → p π^−$ decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb$^{−1}$ . The $CP$-violating asymmetries are measured to be $A_{CP}^{pK^−} = −0.020±0.013±0.019$ and $A_{CP}^{pπ^−}=−0.035±0.017±0.020$, and their difference $A_{CP}^{pK^−}−A_{CP}^{pπ^−}=0.014±0.022±0.010$, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date. Physics letters / B 787, 124 - 133 (2018). doi:10.1016/j.physletb.2018.10.039 Published by North-Holland Publ., Amsterdam