Covi, Laura

[["dc.bibliographiccitation.artnumber","2703"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","The European Physical Journal C"],["dc.bibliographiccitation.lastpage","16"],["dc.bibliographiccitation.volume","74"],["dc.contributor.author","Catena, Riccardo"],["dc.contributor.author","Covi, Laura"],["dc.date.accessioned","2019-07-09T11:41:08Z"],["dc.date.available","2019-07-09T11:41:08Z"],["dc.date.issued","2014"],["dc.description.abstract","We reviewthe status of different dark-matter candidates in the context of supersymmetric models, in particular the neutralino as a realization of the WIMP mechanism and the gravitino. We give a summary of the recent bounds in direct and indirect detection and also of the LHC searches relevant for the dark-matter question. We also discuss the implications of the Higgs discovery for the supersymmetric dark-matter models and give the prospects for the future years."],["dc.identifier.doi","10.1140/epjc/s10052-013-2703-4"],["dc.identifier.fs","605189"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11719"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58358"],["dc.language.iso","en"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/289442/EU//INVISIBLES"],["dc.relation.euproject","INVISIBLES"],["dc.relation.issn","1434-6052"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","SUSY dark matter(s)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","115006"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW D"],["dc.bibliographiccitation.volume","92"],["dc.contributor.author","Arcadi, Giorgio"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Nardecchia, Marco"],["dc.date.accessioned","2018-11-07T09:47:35Z"],["dc.date.available","2018-11-07T09:47:35Z"],["dc.date.issued","2015"],["dc.description.abstract","A very simple way to obtain comparable baryon and dark matter densities in the early Universe is through their contemporary production from the out-of-equilibrium decay of a mother particle, if both populations are suppressed by comparably small numbers, i.e., the CP violation in the decay and the branching fraction, respectively. We present a detailed study of this kind of scenario in the context of an R-parity violating realization of the minimal supersymmetric standard model in which the baryon asymmetry and the gravitino dark matter are produced by the decay of a Bino. A quantitative determination, in a realistic particle physics framework, of these two quantities is quite involving, due to the non trivial determination of the abundance of the decaying Bino, as well as due to the impact of wash-out processes and of additional sources both for the baryon asymmetry and the DM relic density. To achieve a quantitative determination of the baryon and dark matter abundances, we have implemented and solved a system of coupled Boltzmann equations for the particle species involved in their generation, including all the relevant processes. In the most simple, but still general, limit, in which the processes determining the abundance and the decay rate of the Bino are mediated by degenerate right-handed squarks, the correct values of the dark matter and baryon relic densities are achieved for a Bino mass between 50 and 100 TeV, Gluino next-to-lightest supersymmetric particle mass in the range 15-60 TeV, and a gravitino mass between 100 GeV and few TeV. These high masses are unfortunately beyond the kinematical reach of the LHC. On the contrary, an antiproton signal from the decays of the gravitino lightest supersymmetric particle might be within the sensibility of AMS-02 and gamma-ray telescopes."],["dc.description.sponsorship","European Union [PITNGA-2011-289442]"],["dc.identifier.doi","10.1103/PhysRevD.92.115006"],["dc.identifier.isi","000366096200005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35145"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","2470-0029"],["dc.relation.issn","2470-0010"],["dc.title","Gravitino dark matter and low-scale baryogenesis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","115008"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW D"],["dc.bibliographiccitation.volume","92"],["dc.contributor.author","Arbey, Alexandre"],["dc.contributor.author","Battaglia, Marco"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Hasenkamp, Jasper"],["dc.contributor.author","Mahmoudi, Farvah"],["dc.date.accessioned","2018-11-07T09:47:34Z"],["dc.date.available","2018-11-07T09:47:34Z"],["dc.date.issued","2015"],["dc.description.abstract","Gravitino dark matter (DM) represents a compelling scenario in supersymmetry (SUSY), which brings together a variety of data from cosmology and collider physics. We discuss the constraints obtained from the LHC on supersymmetric models with gravitino dark matter and the neutralino next-to-lightest SUSY particle, which is the case most difficult to disentangle at colliders from a neutralino lightest SUSY particle forming DM. The phenomenological SUSY model with 19 + 1 free parameters is adopted. Results are obtained from broad scans of the phase space of these uncorrelated parameters. The relation between gravitino mass, gluino mass and reheating temperature as well as the derived constraints on these parameters are discussed in detail. This relation offers a unique opportunity to place stringent bounds on the cosmological model, within the gravitino dark matter scenario, from the results of the LHC searches in run-2 and the planned high-luminosity upgrade."],["dc.identifier.doi","10.1103/PhysRevD.92.115008"],["dc.identifier.isi","000366169900005"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12709"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35140"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/289442/EU//INVISIBLES"],["dc.relation.issn","2470-0029"],["dc.relation.issn","2470-0010"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","LHC constraints on gravitino dark matter"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Reports on Progress in Physics"],["dc.contributor.author","Billard, Julien"],["dc.contributor.author","Boulay, Mark"],["dc.contributor.author","Cebrian, S"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Fiorillo, Giuliana"],["dc.contributor.author","Green, Anne M"],["dc.contributor.author","Kopp, Joachim"],["dc.contributor.author","Majorovits, Bela"],["dc.contributor.author","Palladino, Kimberly"],["dc.contributor.author","Petricca, Federica"],["dc.contributor.author","Schumann, Marc"],["dc.date.accessioned","2022-04-01T10:02:48Z"],["dc.date.available","2022-04-01T10:02:48Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract This Report provides an extensive review of the experimental programme of direct detection searches of particle dark matter. It focuses mostly on European efforts, both current and planned, but does it within a broader context of a worldwide activity in the field. It aims at identifying the virtues, opportunities and challenges associated with the different experimental approaches and search techniques. It presents scientific and technological synergies, both ex- isting and emerging, with some other areas of particle physics, notably collider and neutrino programmes, and beyond. It addresses the issue of infrastructure in light of the growing needs and challenges of the different experimental searches. Finally, the Report makes a number of recommendations from the perspective of a long-term future of the field. They are introduced, along with some justification, in the opening Overview and Recommendations section and are next summarised at the end of the Report. Overall, we recommend that the direct search for dark matter particle interactions with a detector target should be given top priority in astroparticle physics, and in all particle physics, and beyond, as a positive measurement will provide the most unambiguous confirmation of the particle nature of dark matter in the Universe."],["dc.identifier.doi","10.1088/1361-6633/ac5754"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/106008"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1361-6633"],["dc.relation.issn","0034-4885"],["dc.title","Direct Detection of Dark Matter – APPEC Committee Report "],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","039"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Cosmology and Astroparticle Physics"],["dc.bibliographiccitation.lastpage","39"],["dc.bibliographiccitation.volume","2014"],["dc.contributor.author","Covi, L."],["dc.contributor.author","Dradi, F."],["dc.date.accessioned","2019-07-09T11:40:55Z"],["dc.date.available","2019-07-09T11:40:55Z"],["dc.date.issued","2014"],["dc.description.abstract","We consider scenarios of gravitino LSP and DM with stop NLSP both within R-parity conserving and R-parity violating supersymmetry (RPC and RPV SUSY, respectively). We discuss cosmological bounds from Big Bang Nucleosynthesis (BBN) and the gravitino abundance and then concentrate on the signals of long-lived stops at the LHC as displaced vertices or metastable particles. Finally we discuss how to distinguish R-parity conserving and R-parity breaking stop decays if they happen within the detector and how to suppress SM backgrounds."],["dc.format.extent","34"],["dc.identifier.doi","10.1088/1475-7516/2014/10/039"],["dc.identifier.fs","606276"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11476"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58295"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/289442/EU//INVISIBLES"],["dc.relation.euproject","INVISIBLES"],["dc.relation.issn","1475-7516"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.rights.access","openAccess"],["dc.title","Long-lived stop at the LHC with or without R-parity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","064"],["dc.bibliographiccitation.issue","09"],["dc.bibliographiccitation.journal","Journal of Cosmology and Astroparticle Physics"],["dc.bibliographiccitation.volume","2022"],["dc.contributor.affiliation","Covi, Laura;"],["dc.contributor.affiliation","Khan, Sarif;"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Khan, Sarif"],["dc.date.accessioned","2022-12-01T08:31:05Z"],["dc.date.available","2022-12-01T08:31:05Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:13:20Z"],["dc.description.abstract","Abstract\r\n \r\n In the Standard Model a Dark Matter candidate is missing, but it is relatively\r\n simple to enlarge the model including one or more suitable particles.\r\n We consider in this paper one such extension, inspired by simplicity and\r\n by the goal to solve more than just the Dark Matter issue.\r\n Indeed we consider a local U(1) extension of the SM providing an\r\n axion particle to solve the strong CP problem and including RH neutrinos\r\n with appropriate mass terms. One of the latter is decoupled from the SM\r\n leptons and can constitute stable sterile neutrino DM.\r\n In this setting, the PQ symmetry arises only as an accidental symmetry\r\n but its breaking by higher order operators is sufficiently suppressed to\r\n avoid introducing a large\r\n θ\r\n contribution.\r\n The axion decay constant and the RH neutrino masses are related\r\n to the same v.e.v.s and the PQ scale and both DM densities are determined by\r\n the parameters of the axion and scalar sector.\r\n The model predicts in general a mixed Dark Matter\r\n scenario with both axion and sterile neutrino DM and is characterised by\r\n a reduced density and observational signals from each single component."],["dc.identifier.doi","10.1088/1475-7516/2022/09/064"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/118070"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-621"],["dc.relation.eissn","1475-7516"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Axion and FIMP dark matter in a 𝖴(1) extension of the Standard Model"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","063"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of Cosmology and Astroparticle Physics"],["dc.contributor.author","Arcadi, Giorgio"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Dradi, Federico"],["dc.date.accessioned","2018-11-07T09:33:55Z"],["dc.date.available","2018-11-07T09:33:55Z"],["dc.date.issued","2014"],["dc.description.abstract","We study the possible signals at LHC of the minimal models of decaying dark matter. Those models are characterized by the fact that DM interacts with SM particles through renormalizable coupling with an additional heavier charged state. Such interaction allows to produce a substantial abundance of DM in the early Universe via the decay of the charged heavy state, either in- or out-of-equilibrium. Moreover additional couplings of the charged particle open up decay channels for the DM, which can nevertheless be sufficiently long-lived to be a good DM candidate and within reach of future Indirect Detection observations. We compare the cosmologically favored parameter regions to the LHC discovery reach and discuss the possibility of simultaneous detection of DM decay in Indirect Detection."],["dc.description.sponsorship","European Union [PITN-GA-2011-289442]"],["dc.identifier.doi","10.1088/1475-7516/2014/10/063"],["dc.identifier.fs","606275"],["dc.identifier.isi","000345990800064"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11478"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32068"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/289442/EU//INVISIBLES"],["dc.relation.issn","1475-7516"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","LHC prospects for minimal decaying dark matter"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","106"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.contributor.author","Choi, Ki-Young"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Kim, Jihn E."],["dc.contributor.author","Roszkowski, Leszek"],["dc.date.accessioned","2018-11-07T09:11:19Z"],["dc.date.available","2018-11-07T09:11:19Z"],["dc.date.issued","2012"],["dc.description.abstract","Axino arises in supersymmetric versions of axion models and is a natural candidate for cold or warm dark matter. Here we revisit axino dark matter produced thermally and non-thermally in light of recent developments. First we discuss the definition of axino relative to low energy axion one for several KSVZ and DFSZ models of the axion. Then we review and refine the computation of the dominant QCD production in order to avoid unphysical cross-sections and, depending on the model, to include production via SU(2) and U(1) interactions and Yukawa couplings."],["dc.identifier.doi","10.1007/JHEP04(2012)106"],["dc.identifier.isi","000304148100032"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8899"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26694"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1029-8479"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","Axino cold dark matter revisited"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","193"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2019"],["dc.contributor.author","Biswas, Anirban"],["dc.contributor.author","Choubey, Sandhya"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Khan, Sarif"],["dc.date.accessioned","2021-11-22T14:31:46Z"],["dc.date.available","2021-11-22T14:31:46Z"],["dc.date.issued","2019"],["dc.description.abstract","In this work, we explain three beyond standard model (BSM) phenomena, namely neutrino masses, the baryon asymmetry of the Universe and Dark Matter, within a single model and in each explanation the right handed (RH) neutrinos play the prime role. Indeed by just introducing two RH neutrinos we can generate the neutrino masses by the Type-I seesaw mechanism. The baryon asymmetry of the Universe can arise from thermal leptogenesis from the decay of lightest RH neutrino before the decoupling of the electroweak sphaleron transitions, which redistribute the B − L number into a baryon number. At the same time, the decay of the RH neutrino can produce the Dark Matter (DM) as an asymmetric Dark Matter component. The source of CP violation in the two sectors is exactly the same, related to the complex couplings of the neutrinos. By determining the comoving number density for different values of the CP violation in the DM sector, we obtain a particular value of the DM mass after satisfying the relic density bound. We also give prediction for the DM direct detection (DD) in the near future by different ongoing DD experiments."],["dc.identifier.doi","10.1007/JHEP05(2019)193"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16224"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/93401"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation","info:eu-repo/grantAgreement/EC/H2020/690575/EU//InvisiblesPlus"],["dc.relation","info:eu-repo/grantAgreement/EC/H2020/674896/EU//ELUSIVES"],["dc.relation.eissn","1029-8479"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Cosmology of Theories beyond the SM; Neutrino Physics"],["dc.subject.ddc","530"],["dc.title","Common origin of baryon asymmetry, Dark Matter and neutrino mass"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","005"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Journal of Cosmology and Astroparticle Physics"],["dc.contributor.author","Arcadi, Giorgio"],["dc.contributor.author","Covi, Laura"],["dc.date.accessioned","2018-11-07T09:21:43Z"],["dc.date.available","2018-11-07T09:21:43Z"],["dc.date.issued","2013"],["dc.description.abstract","We consider a minimal Dark Matter model with just two additional states, a Dark Matter Majorana fermion and a colored or electroweakly charged scalar, without introducing any symmetry to stabilize the DM state. We identify the parameter region where an indirect DM signal would be within the reach of future observations and the DM relic density generated fits the observations. We find in this way two possible regions in the parameter space, corresponding to a FIMP/SuperWIMP or a WIMP DM. We point out the different collider signals of this scenario and how it will be possible to measure the different couplings in case of a combined detection."],["dc.description.sponsorship","European Union [PITN-GA-2011-289442]"],["dc.identifier.doi","10.1088/1475-7516/2013/08/005"],["dc.identifier.isi","000324032800008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29175"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1475-7516"],["dc.title","Minimal decaying Dark Matter and the LHC"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]