Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV
TL;DR: In this article, the authors show that fermionic dark matter (DM) communicating with the standard model via the Higgs portal is a viable scenario, even if a SM-like Higgs is found at around 125 GeV.
About: This article is published in Physics Letters B.The article was published on 2012-09-17 and is currently open access. It has received 244 citations till now. The article focuses on the topics: Higgs field & Higgs mechanism.
Citations
More filters
TL;DR: A review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities, and Collider and Indirect Detection will not be neglected when they represent a complementary probe.
Abstract: Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.
772 citations
Academia Sinica1, Imperial College London2, University of Lyon3, École normale supérieure de Lyon4, CERN5, Tel Aviv University6, University of Southampton7, SLAC National Accelerator Laboratory8, Durham University9, University of Melbourne10, Rutgers University11, International School for Advanced Studies12, Université libre de Bruxelles13, Chinese Academy of Sciences14, University of California, Davis15, Vrije Universiteit Brussel16, University of Freiburg17, University of Geneva18, University of Bonn19, King's College London20, University of Maryland, College Park21, University of Oxford22, Argonne National Laboratory23, Fermilab24, University of Grenoble25, University of California, Santa Barbara26, University of Malaya27, University of Oregon28, Harvard University29, Royal Holloway, University of London30, University College London31, Ohio State University32, Texas Tech University33, Brown University34, University of Amsterdam35, University of Chicago36, Rutherford Appleton Laboratory37, University of California, Irvine38, KEK39, University of Glasgow40, Lawrence Berkeley National Laboratory41, University of California, Berkeley42, University of Zurich43, University of Toronto44, University of Oklahoma45, Max Planck Society46, Weizmann Institute of Science47, New York University48, McMaster University49, Perimeter Institute for Theoretical Physics50
TL;DR: In this paper, a set of simplified models for dark matter and its interactions with the Standard Model particles are presented, and the guiding principles underpinning these simplified models are spelled out, and some suggestions for implementation are presented.
318 citations
Academia Sinica1, Imperial College London2, University of Lyon3, École normale supérieure de Lyon4, CERN5, Tel Aviv University6, University of Southampton7, SLAC National Accelerator Laboratory8, Durham University9, University of Melbourne10, Rutgers University11, International School for Advanced Studies12, Chinese Academy of Sciences13, Université libre de Bruxelles14, University of California, Davis15, Vrije Universiteit Brussel16, University of Freiburg17, University of Geneva18, University of Bonn19, King's College London20, University of Maryland, College Park21, University of Oxford22, Argonne National Laboratory23, Fermilab24, University of Grenoble25, University of California, Santa Barbara26, University of Malaya27, University of Oregon28, Harvard University29, Royal Holloway, University of London30, University College London31, Ohio State University32, Texas Tech University33, Brown University34, University of Amsterdam35, University of Chicago36, Rutherford Appleton Laboratory37, University of California, Irvine38, KEK39, University of Glasgow40, University of California, Berkeley41, Lawrence Berkeley National Laboratory42, University of Zurich43, University of Toronto44, University of Oklahoma45, Max Planck Society46, Weizmann Institute of Science47, New York University48, McMaster University49, Perimeter Institute for Theoretical Physics50
TL;DR: In this article, a set of simplified models for dark matter and its interactions with the Standard Model particles are presented, and the guiding principles underpinning these simplified models are spelled out, and some suggestions for implementation are presented.
Abstract: This document outlines a set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these simplified models have when applied to dark matter searches at the LHC, and to provide a number of useful expressions for reference. The list of models includes both s-channel and t-channel scenarios. For s-channel, spin-0 and spin-1 mediation is discussed, and also realizations where the Higgs particle provides a portal between the dark and visible sectors. The guiding principles underpinning the proposed simplified models are spelled out, and some suggestions for implementation are presented.
294 citations
TL;DR: In this paper, the authors discuss both experimental and theoretical aspects of searches for dark matter at the Large Hadron Collider (LHC) and provide an overview of the various experimental search channels, followed by a summary of different theoretical approaches for predicting dark matter signals.
Abstract: This review discusses both experimental and theoretical aspects of searches for dark matter at the LHC. An overview of the various experimental search channels is given, followed by a summary of the different theoretical approaches for predicting dark matter signals. A special emphasis is placed on the interplay between LHC dark matter searches and other kinds of dark matter experiments, as well as among different types of LHC searches.
283 citations
TL;DR: The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs Boson decays, using multiple production and decay channels with up to 4.7 fb(-1) of...
Abstract: The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb(-1) of ...
271 citations
References
More filters
TL;DR: In this paper, the authors proposed a light boson invoked by XDM to mediate a large inelastic scattering cross section for the DAMA annual modulation signal at low velocities at redshift, which could produce observable effects on the ionization history of the universe.
Abstract: � > 1GeV 1 . The long range allows a Sommerfeld enhancement to boost the annihilation cross section as required, without altering the weak-scale annihilation cross section during dark matter freeze-out in the early universe. If the dark matter annihilates into the new force carrier φ, its low mass can make hadronic modes kinematically inaccessible, forcing decays dominantly into leptons. If the force carrier is a non-Abelian gauge boson, the dark matter is part of a multiplet of states, and splittings between these states are naturally generated with size αm� � MeV, leading to the eXciting dark matter (XDM) scenario previously proposed to explain the positron annihilation in the galactic center observed by the INTEGRAL satellite; the light boson invoked by XDM to mediate a large inelastic scattering cross section is identified with the φ here. Somewhat smaller splittings would also be expected, providing a natural source for the parameters of the inelastic dark matter (iDM) explanation for the DAMA annual modulation signal. Since the Sommerfeld enhancement is most significant at low velocities, early dark matter halos at redshift � 10 potentially produce observable effects on the ionization history of the universe. Because of the enhanced cross section, detection of substructure is more probable than with a conventional WIMP. Moreover, the low velocity dispersion of dwarf galaxies and Milky Way subhalos can increase the substructure annihilation signal by an additional order of magnitude or more.
1,682 citations
TL;DR: In this article, a generic mechanism via which thermal relic WIMP dark matter may be decoupled from the Standard Model, namely through a combination of WIMPs annihilation to metastable mediators with subsequent delayed decay to Standard Model states, is considered.
1,033 citations
"Higgs portal, fermionic dark matter..." refers background in this paper
...This situation is similar to secluded DM models [48], where DM annihilations into light mediator particles have been discussed, see also [49,50]....
[...]
TL;DR: A new module of the micrOMEGAs package is presented for the calculation of WIMP–nuclei elastic scattering cross sections relevant for the direct detection of dark matter through its interaction with nuclei in a large detector.
822 citations
"Higgs portal, fermionic dark matter..." refers background or methods in this paper
... on the signal strength reduction factor obtained from a combination of all search channels. 3.4 Numerical results We have performed a numerical scan over the parameters of this model using micrOMEGAs[29, 30]. We assume m H 1 = 125 GeV and set g P = 0. Then we scan randomly over m ˜;g S;v 2;; 4, and m H 2 or ˚ as free parameters. In order to ensure perturbativity, we impose that the absolute value of ...
[...]
...d given DM mass we determine the sizes of iby requiring that the thermal relic density is obtained in the interval 0:09 < h2 <0:13. For the thermal freeze-out calculations we use the micrOMEGAs [29,30] public code, and we assume m h= 125 GeV. 4 The curve for 1= 5 = 0 corresponds to parity conservation, i.e., pure scalar coupling. This case was considered for example in [2,10,14] and is incompatible...
[...]
...the limit from XENON100 [19]. where m red = m pm ˜=(m p+ m ˜) is the reduced mass of the DM{proton system and g Hp= m p v " X q=u;d;s f(p) q + 2 9 1 X q=u;d;s f(p) q !# ˇ1:3 10 3 ; (9) see e.g., [29], where also values for f(p) q are given. The operator O 5, on the other hand, induces a velocity suppressed scattering ˙(˜p!˜p) = 2 ˇ (C 5g Hp) 2 m red m2 h 2 2: (10) where typically ˘10 3. Hen...
[...]
Columbia University1, University of California, Los Angeles2, University of Zurich3, University of Münster4, University of Coimbra5, University of Nantes6, Weizmann Institute of Science7, University of Mainz8, Shanghai Jiao Tong University9, Max Planck Society10, Rice University11, University of Bologna12
TL;DR: The XENON100 detector, installed underground at the Laboratori Nazionali del Gran Sasso of INFN, Italy, finds no evidence for dark matter, leading to the most stringent limit on dark matter interactions today.
Abstract: We present results from the direct search for dark matter with the XENON100 detector, installed underground at the Laboratori Nazionali del Gran Sasso of INFN, Italy. XENON100 is a two-phase time-projection chamber with a 62 kg liquid xenon target. Interaction vertex reconstruction in three dimensions with millimeter precision allows the selection of only the innermost 48 kg as the ultralow background fiducial target. In 100.9 live days of data, acquired between January and June 2010, no evidence for dark matter is found. Three candidate events were observed in the signal region with an expected background of (1.8{+-}0.6) events. This leads to the most stringent limit on dark matter interactions today, excluding spin-independent elastic weakly interacting massive particle (WIMP) nucleon scattering cross sections above 7.0x10{sup -45} cm{sup 2} for a WIMP mass of 50 GeV/c{sup 2} at 90% confidence level.
815 citations
"Higgs portal, fermionic dark matter..." refers background or methods or result in this paper
...The scattering cross section is shown for several ratios of pseudo scalar coupling to scalar coupling Λ1/Λ5, and compared to the limit from XENON100 [19]....
[...]
...The points above the blue line are excluded at 95% CL by the XENON100 experiment [19]....
[...]
...On the one hand, the new generation of direct DM detection experiments [19, 20] is starting to probe DM–nucleon scattering cross sections of roughly the size given by a single Higgs exchange with the SM Yukawa couplings to the quarks....
[...]
...This case was considered for example in [2, 10, 14] and is incompatible with the bound from XENON100 [19] for DM masses mχ ....
[...]
29 Mar 2012
TL;DR: In this article, the authors reported results from searches for the standard model Higgs boson in proton-proton collisions at square root(s) = 7 TeV in five decay modes: gamma pair, b-quark pair, tau lepton pair, W pair, and Z pair.
Abstract: Combined results are reported from searches for the standard model Higgs boson in proton-proton collisions at sqrt(s)=7 TeV in five Higgs boson decay modes: gamma pair, b-quark pair, tau lepton pair, W pair, and Z pair. The explored Higgs boson mass range is 110-600 GeV. The analysed data correspond to an integrated luminosity of 4.6-4.8 inverse femtobarns. The expected excluded mass range in the absence of the standard model Higgs boson is 118-543 GeV at 95% CL. The observed results exclude the standard model Higgs boson in the mass range 127-600 GeV at 95% CL, and in the mass range 129-525 GeV at 99% CL. An excess of events above the expected standard model background is observed at the low end of the explored mass range making the observed limits weaker than expected in the absence of a signal. The largest excess, with a local significance of 3.1 sigma, is observed for a Higgs boson mass hypothesis of 124 GeV. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-600 (110-145) GeV is estimated to be 1.5 sigma (2.1 sigma). More data are required to ascertain the origin of this excess.
786 citations