WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry...
Transcript of WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry...
![Page 1: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/1.jpg)
WIMPs: Status and prospects
Giorgio ArcadiMPIK Heidelberg
![Page 2: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/2.jpg)
Motivation and overview
WIMP paradigm is an elegant solution for the Dark Matter problem.
We provide an overview of the capability of current and future DirectDetection experiments of testing the WIMP paradigmCase of study:‘‘Dark Portals‘‘
Critical assement about the theoretical limitations of ‘‘simplified“ darkmatter models and the possibility of embedding in UV complete setups.
Giorgio Arcadi MPIK 08-05-2017
![Page 3: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/3.jpg)
WIMP scenarios feature a strong complementarity between Dark Matter searches.
Giorgio Arcadi MPIK 08-05-2017
![Page 4: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/4.jpg)
Abdallah et al. arXiv:1506.03316
Giorgio Arcadi MPIK 08-05-2017
![Page 5: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/5.jpg)
Simplified models: “Dark portals“
Mediator sector
Visible sector
SM states
Trivial dark sector
Only the DM candidateStabilized by a global symmetry
Single state interacting with DM and fermion pairs.Optional: neutral SM mediators(Higgs, Z, might do the job)
Giorgio Arcadi MPIK 08-05-2017
![Page 6: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/6.jpg)
Simplified vs UV complete models
Giorgio Arcadi MPIK 08-05-2017
+ Few free parameters: efficient interface with experimentaloutput
- Overconstrained
- Lack of theoreticalconsistency might affect theoretical predictions.
+More solid predictions.
-Potentially high numberof free parameters
![Page 7: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/7.jpg)
Complementarity in simplified models
Relic density / ID
Direct Detection
Light mediators can beproduced on shell.Additional signals(resonances) also fromdecays into SM particles.
Chala et al. 1503.05916
Giorgio Arcadi MPIK 08-05-2017
![Page 8: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/8.jpg)
Examples of Dark portals
Spin-0 mediator
Spin-1 mediator
Giorgio Arcadi MPIK 08-05-2017
Not present for Majorana fermions
![Page 9: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/9.jpg)
WIMP Paradigm
Giorgio Arcadi MPIK 08-05-2017
![Page 10: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/10.jpg)
DM Direct Detection
Microscopic description through interactions of DM with quarks (or gluons)
Translated as effective interaction with nucleons.
Two kinds of interactions customarily distinguished
Spin Indipendent (SI) interactions: Sum coherently among nucleons of the targetSpin Dependent (SD) interactions: Sensitive to the contributions from protons and nucleonsto the nuclear spin.
Giorgio Arcadi MPIK 08-05-2017
![Page 11: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/11.jpg)
Spin-0 Mediator
Spin-1 Mediator
Giorgio Arcadi MPIK 08-05-2017
Zero for Majorana fermions
![Page 12: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/12.jpg)
(Xenon Collaboration, 1512.07501)
Panda-X Collaboration, 1611.06553
Giorgio Arcadi MPIK 08-05-2017
![Page 13: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/13.jpg)
Higgs portal
Giorgio Arcadi MPIK 08-05-2017
G.A., M. Dutra, P. Ghosh, M. Lindner, Y. Mambrini, M. Pierre, F. Queiroz, 1703.07364
![Page 14: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/14.jpg)
Giorgio Arcadi MPIK 08-05-2017
Z-portal
![Page 15: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/15.jpg)
Giorgio Arcadi MPIK 08-05-2017
Spin-0 (real) mediator
Scalar DM
Vector DM
Fermion DM
G.A., M. Dutra, P. Ghosh, M. Lindner, Y. Mambrini, M. Pierre, F. Queiroz, 1703.07364
![Page 16: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/16.jpg)
Giorgio Arcadi MPIK 08-05-2017
Spin-1 mediator
Complex scalar DM
Non abelian vector DM
Dirac fermion DM
![Page 17: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/17.jpg)
Giorgio Arcadi MPIK 08-05-2017
Dirac vs Majorana
![Page 18: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/18.jpg)
ψ ψ
q
A A
q
SI cross-section induced only at one loop
S. Ipek, D. Mckenn and A. Nelson, 1404.3716
Giorgio Arcadi MPIK 08-05-2017
Pseudo-scalar portal
![Page 19: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/19.jpg)
Scalar+(light pseudoscalar mediator)
Giorgio Arcadi MPIK 08-05-2017
Pseudoscalar interpreted as pseudo-goldstone boson of a U(1) global symmetry
Enhanchement of DM annihilation cross-section by light final states.
![Page 20: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/20.jpg)
Giorgio Arcadi MPIK 08-05-2017
![Page 21: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/21.jpg)
RGE Corrections
F. d’Eramo, B. J. Kavanagh, P. Panci 1605.04917
Giorgio Arcadi MPIK 08-05-2017
![Page 22: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/22.jpg)
A. Alves, G.A., Y. Mambrini, S. Profumo, F. Queiroz, 1612.07282
Giorgio Arcadi MPIK 08-05-2017
![Page 23: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/23.jpg)
In a not gauge invariant setup axial couplings lead tocross-sections which violate perturbative unitarity(Kahlhoefer et al: 1510.02110)
Unitarity bound
Giorgio Arcadi MPIK 08-05-2017
![Page 24: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/24.jpg)
Towards UV complete models:spin-0 mediators
Giorgio Arcadi MPIK 08-05-2017
![Page 25: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/25.jpg)
Giorgio Arcadi MPIK 08-05-2017
DM Interactions
Vector DMFermion DM
Scalar DM
![Page 26: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/26.jpg)
Giorgio Arcadi MPIK 08-05-2017
![Page 27: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/27.jpg)
Extra U(1) from Grand Unified theories
Spin-1 as new gauge bosons
Giorgio Arcadi MPIK 08-05-2017
Spin-1 BSM mediators can be interpreted as gauge bosons of extra symmetrygroups
![Page 28: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/28.jpg)
General implementation:
Han et al. 1308.2738
Vectorial and axial couplings are actuallycombinations of left-handed and right-handedcurrents
Giorgio Arcadi MPIK 08-05-2017
![Page 29: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/29.jpg)
Giorgio Arcadi MPIK 08-05-2017
G.A., M. Lindner, Y. Mambrini, M. Pierre, F. Queiroz, 1704.023028
XENON1T
LZ
DARWIN
![Page 30: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/30.jpg)
Giorgio Arcadi MPIK 08-05-2017
Coupling with the visible sector throught kinetic mixing
![Page 31: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/31.jpg)
Giorgio Arcadi MPIK 08-05-2017
![Page 32: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/32.jpg)
t-channel mediators
Giorgio Arcadi MPIK 08-05-2017
Mediator is (partially) charged under the SM group. Possible complementaritywith LHC.
Dark Matter stable only if lighter than the mediator.
Coannihilations possibly relevant for the relic density.
![Page 33: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/33.jpg)
Giorgio Arcadi MPIK 08-05-2017
![Page 34: WIMPs: Status and prospects · 2018-09-18 · Only the DM candidate Stabilized by a global symmetry Single state interacting with DM ... theoretical predictions. +More solid predictions.-Potentially](https://reader036.fdocuments.us/reader036/viewer/2022070720/5ee028b3ad6a402d666b65be/html5/thumbnails/34.jpg)
Conclusions
Giorgio Arcadi MPIK 08-05-2017
We have provided an overview of current and next generationDirect Detection facilities of probing the WIMP hypothesis.
Simplest realizations suffer increasing experimental pressure.
Definite statements require to go beyond the ‘simplifiedmodels’ level.