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","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.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","043"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Journal of Cosmology and Astroparticle Physics"],["dc.contributor.author","Binder, Tobias"],["dc.contributor.author","Covi, Laura"],["dc.contributor.author","Kamada, Ayuki"],["dc.contributor.author","Murayama, Hitoshi"],["dc.contributor.author","Takahashi, Tomo"],["dc.contributor.author","Yoshida, Naoki"],["dc.date.accessioned","2018-11-07T10:05:55Z"],["dc.date.available","2018-11-07T10:05:55Z"],["dc.date.issued","2016"],["dc.description.abstract","Dark Matter (DM) models providing possible alternative solutions to the smallscale crisis of the standard cosmology are nowadays of growing interest. We consider DM interacting with light hidden fermions via well-motivated fundamental operators showing the resultant, matter power spectrum is suppressed on subgalactic scales within a plausible parameter region. Our basic description of the evolution of cosmological perturbations relies on a fully consistent first principles derivation of a perturbed Fokker-Planck type equation, generalizing existing literature. The cosmological perturbation of the Fokker-Planck equation is presented for the first time in two different gauges, where the results transform into each other according to the rules of gauge transformation. Furthermore, our focus lies on a, derivation of a broadly applicable and easily computable collision term showing important phenomenological differences to other existing approximations. As one of the Main results and concerning the small-scale crisis, we show the equal importance of vector and scalar boson mediated interactions between the DM and the light fermions."],["dc.identifier.doi","10.1088/1475-7516/2016/11/043"],["dc.identifier.isi","000397734100043"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14436"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39000"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1475-7516"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Matter power spectrum in hidden neutrino interacting dark matter models: a closer look at the collision term"],["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","023"],["dc.bibliographiccitation.issue","7"],["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","2018-11-07T09:54:57Z"],["dc.date.available","2018-11-07T09:54:57Z"],["dc.date.issued","2015"],["dc.description.abstract","We investigate the possibility of reproducing the recently reported 3.55 keV line in some simple decaying dark matter scenarios. In all cases a keV scale decaying DM is coupled with a scalar field charged under SM gauge interactions and thus capable of pair production at the LHC. We will investigate how the demand of a DM lifetime compatible with the observed signal, combined with the requirement of the correct DM relic density through the freeze-in mechanism, impacts the prospects of observation at the LHC of the decays of the scalar field."],["dc.description.sponsorship","ERC advanced grant Higgs@LHC; European Union [PITN-GA-2011-289442]"],["dc.identifier.doi","10.1088/1475-7516/2015/07/023"],["dc.identifier.fs","614264"],["dc.identifier.isi","000359259500023"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12078"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36649"],["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","3.55 keV line in minimal decaying dark matter scenarios"],["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"]]