D. G. Cerdeño

Consejo Superior de Investigaciones Científicas

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A. N. Villano

University of Colorado Denver

S. R. Golwala

California Institute of Technology

E. Figueroa‐Feliciano

Fermi National Accelerator Laboratory

R. W. Schnee

South Dakota School of Mines and Technology

M. E. Huber

University of Colorado Denver

T. Saab

University of Florida

B. Loer

Pacific Northwest National Laboratory

R. Bunker

Pacific Northwest National Laboratory

J. Sander

University of Hildesheim

J. Cooley

Southern Methodist University

Cooperative Institutions

Centre National de la Recherche Scientifique

113

Stanford University

105

European Organization for Nuclear Research

103

SLAC National Accelerator Laboratory

100

Kavli Institute for Particle Astrophysics and Cosmology

Fermi National Accelerator Laboratory

Universidad Autónoma de Madrid

University of California, Berkeley

California Institute of Technology

Texas A&M University

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Publisher’s Note: Silicon detector results from the first five-tower run of CDMS II [Phys. Rev. D88, 031104(R) (2013)]

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2013)

R. Agnese Z. Ahmed A. J. Anderson S. Arrenberg D. Balakishiyeva

10.1103/physrevd.88.059901

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Citations (12)

The minimal phantom sector of the standard model: Higgs phenomenology and Dirac leptogenesis

Journal of High Energy Physics (2006)

D. G. Cerdeño A. Dedes Thomas E. J. Underwood

Leptogenesis

Higgs sector

Technicolor

Goldstone boson

Vector boson

10.1088/1126-6708/2006/09/067

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Citations (53)

Global fits of the cMSSM including the first LHC and XENON100 data

Journal of Cosmology and Astroparticle Physics (2012)

Gianfranco Bertone D. G. Cerdeño Mattia Fornasa Roberto Ruiz de Austri Charlotte Strege

We present updated global fits of the constrained Minimal Supersymmetric Standard Model (cMSSM), including the most recent constraints from the ATLAS and CMS detectors at the LHC, as well as the most recent results of the XENON100 experiment. Our robust analysis takes into account both astrophysical and hadronic uncertainties that enter in the calculation of the rate of WIMP-induced recoils in direct detection experiment. We study the consequences for neutralino Dark Matter, and show that current direct detection data already allow to robustly rule out the so-called Focus Point region, therefore demonstrating the importance of particle astrophysics experiments in constraining extensions of the Standard Model of Particle Physics. We also observe an increased compatibility between results obtained from a Bayesian and a Frequentist statistical perspective. We find that upcoming ton-scale direct detection experiments will probe essentially the entire currently favoured region (at the 99% level), almost independently of the statistical approach used. Prospects for indirect detection of the cMSSM are further reduced.

WIMP

Astroparticle physics

10.1088/1475-7516/2012/01/015

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Citations (73)

A 119-125 GeV Higgs from a string derived slice of the CMSSM

Journal of High Energy Physics (2012)

Luis Aparicio D. G. Cerdeño Luis E. Ibáñez

CMB cold spot

Superpartner

10.1007/jhep04(2012)126

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Citations (80)

First Direct Limits on Lightly Ionizing Particles with Electric Charge Less than e/6

Physical Review Letters (2015)

R. Agnese A. J. Anderson D. Balakishiyeva R. Basu Thakur D. A. Bauer

While the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. We report results from the Cryogenic Dark Matter Search (CDMS II) experiment that give the first direct-detection limits for cosmogenically produced relativistic particles with electric charge lower than e/6. A search for tracks in the six stacked detectors of each of two of the CDMS II towers finds no candidates, thereby excluding new parameter space for particles with electric charges between e/6 and e/200.

Electric charge

Particle (ecology)

10.1103/physrevlett.114.111302

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Citations (22)

Medium effects in supernovae constraints on light mediators

Physical review. D/Physical review. D. (2021)

D. G. Cerdeño Marina Cermeño M. Ángeles Pérez-García E. Reid

In this article, we reevaluate supernovae (SN) constraints on the diffusion time of neutrinos for a family of extensions of the Standard Model that incorporate new light scalar and vector mediators. We compute the neutrino mean free path, taking into account medium effects in the neutrino-nucleon scattering cross-section, and a radial dependence of the density, energy, and temperature inside the proto-neutron star to determine the coupling strengths compatible with SN1987A constraints on the time duration signal of diffusing neutrinos. We show that medium effects can induce an order of magnitude enhancement in the neutrino mean free path with respect to the vacuum calculation. The increase is more significant when new physics terms dominate over the Standard Model contribution (that is, for small mediator mass and large couplings). Finally, we interpret these results as bounds on the parameter space of a vector $U(1)_{B-L}$ model and scalar lepton number conserving and lepton number violating scenarios, improving on previous results in the literature where medium effects were ignored. We show that SN constraints on the neutrino diffusion time lie within regions of the parameter space that are already ruled out by other experimental constraints. We also comment on potential limits due to changes in the SN equation of state or right-handed neutrino free-streaming, but argue that detailed numerical simulations are needed to improve the reliability of these limits.

Lepton number

10.1103/physrevd.104.063013

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Citations (9)

B anomalies and dark matter: a complex connection

The European Physical Journal C (2019)

D. G. Cerdeño Andrew Cheek Pablo Martín-Ramiro J. M. Moreno

We study an extension of the Standard Model that addresses the hints of lepton flavour universality violation observed in $B\to K^{(*)} l^+l^-$ decays at LHCb, while providing a viable candidate for dark matter. The model incorporates two new scalar fields and a Majorana fermion that induce one-loop contributions to $B$ meson decays. We show that agreement with observational data requires the new couplings to be complex and that the Majorana fermion can reproduce the observed dark matter relic density. This combination of cosmological and flavour constraints sets an upper limit on the dark matter and mediator masses. We have studied LHC dijet and dilepton searches, finding that they rule out large regions of parameter space by setting lower bounds on the dark matter and mediator masses. In particular, dilepton bounds are much more constraining in a future high-luminosity phase. Finally, we have computed the scattering cross section of dark matter off nuclei and compared it to the sensitivity of current and future direct detection experiments, showing that parts of the parameter space could be accessible in the future to multi-ton experiments. Future collider and direct DM searches complement each other to probe large areas of the parameter space of this model.

Majorana fermion

10.1140/epjc/s10052-019-6979-x

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Citations (27)

On the correlation between the local dark matter and stellar velocities

Journal of Cosmology and Astroparticle Physics (2019)

Nassim Bozorgnia Azadeh Fattahi D. G. Cerdeño Carlos S. Frenk Facundo A. Gómez

The dark matter velocity distribution in the Solar neighbourhood is an important astrophysical input which enters in the predicted event rate of dark matter direct detection experiments. It has been recently suggested that the local dark matter velocity distribution can be inferred from that of old or metal-poor stars in the Milky Way. We investigate this potential relation using six high resolution magneto-hydrodynamical simulations of Milky Way-like galaxies of the Auriga project. We do not find any correlation between the velocity distributions of dark matter and old stars in the Solar neighbourhood. Likewise, there are no strong correlations between the local velocity distributions of dark matter and metal-poor stars selected by applying reasonable cuts on metallicity. In some simulated galaxies, extremely metal-poor stars have a velocity distribution that is statistically consistent with that of the dark matter, but the sample of such stars is so small that we cannot draw any strong conclusions.

10.1088/1475-7516/2019/06/045

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Citations (16)

Direct detection of neutralino dark matter in supergravity

Journal of High Energy Physics (2005)

Seungwon Baek D. G. Cerdeño Yeong Gyun Kim Pyungwon Ko Carlos Muñoz

Chargino

Gaugino

Gravitino

10.1088/1126-6708/2005/06/017

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Citations (22)

New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment

Physical Review Letters (2016)

R. Agnese A. J. Anderson T. Aramaki M. Asai W. Baker

The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5 GeV/c^{2}.

WIMP

Massive particle

Low Mass

10.1103/physrevlett.116.071301

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Citations (357)