Title: Electroweak dark matter at future hadron colliders

Abstract

In a large class of scenarios, dark matter (DM) particles that belong to a multiplet of the standard model (SM) weak interactions are challenging to probe in direct detection experiments due to loop-suppressed cross sections. Direct production at colliders is thus crucial to look for such DM candidates, and under current estimates, future runs of the 14-TeV LHC are projected to probe masses of around 300 GeV for DM belonging to an SU(2) doublet (Higgsino-like), and 900 GeV for SU(2) triplet (winolike). We examine how far this mass reach can be extended at the proposed 27-TeV high-energy upgrade of the LHC (HE-LHC), and compare the results to the case for a 100-TeV hadron collider. Following a detector setup similar to that of the ATLAS tracking system for the run-2 LHC upgrade, with a new insertable b-layer (IBL), a disappearing charged track analysis at the HE-LHC can probe Higgsino-like (winolike) DM mass of up to 600 GeV (2.1 TeV) at the 95% C.L. The monojet and missing transverse momentum search, on the otherhand, has a weaker reach of 490 GeV (700 GeV) at 95% C.L. for the Higgsino-like (winolike) states. The mass range accessible in the collider searches can be complementarymore » to the indirect detection probes using gamma rays from dwarf-spheroidal galaxies.« less

Authors:

Han, Tao; Mukhopadhyay, Satyanarayan; Wang, Xing

Publication Date:

2018-08-16

Research Org.:

Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1464866

Alternate Identifier(s):

OSTI ID: 1498926

Grant/Contract Number:  

[FG02-95ER40896]

Resource Type:

Published Article

Journal Name:

Physical Review D

Additional Journal Information:

[Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 3]; Journal ID: ISSN 2470-0010

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS