Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at √s=8 TeV

Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Bergauer, T; Dragicevic, M; Eroe, J; Fabjan, C; Friedl, M; Fruehwirth, R; Ghete, VM; Hartl, C; Hoermann, N; Hrubec, J; Jeitler, M; Kiesenhofer, W; Knuenz, V; Krammer, M; Kraetschmer, I; Liko, D

doi:10.1140/epjc/s10052-015-3451-4

File(s)

Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at [Formula: see text][Formula: see text].pdf (1.27 MB)

Published version

OA Location

http://link.springer.com/article/10.1140/epjc/s10052-015-3451-4

Author(s)

Khachatryan, V

Sirunyan, AM

Tumasyan, A

Adam, W

Bergauer, T

more

Type

Journal Article

Abstract

Results are presented from a search for particle dark matter (DM), extra dimensions, and unparticles using events containing a jet and an imbalance in transverse momentum. The data were collected by the CMS detector in proton–proton collisions at the LHC and correspond to an integrated luminosity of 19.7fb-1at a centre-of-mass energy of 8TeV. The number of observed events is found to be consistent with the standard model prediction. Limits are placed on the DM-nucleon scattering cross section as a function of the DM particle mass for spin-dependent and spin-independent interactions. Limits are also placed on the scale parameter MD in the Arkani-Hamed, Dimopoulos, and Dvali (ADD) model of large extra dimensions, and on the unparticle model parameter ΛU. The constraints on ADD models and unparticles are the most stringent limits in this channel and those on the DM-nucleon scattering cross section are an improvement over previous collider results.

Date Issued

2015-05-29

Date Acceptance

2015-05-11

Citation

European Physical Journal C, 2015, 75 (4)

URI

http://hdl.handle.net/10044/1/34094

DOI

10.1140/epjc/s10052-015-3451-4

ISSN

1434-6052

Publisher

Springer Verlag

Journal / Book Title

European Physical Journal C

Volume

75

Issue

4

Copyright Statement

License URL

http://creativecommons.org/licenses/by/4.0/

Sponsor

Science and Technology Facilities Council (STFC)

Grant Number

ST/K003844/1 GRIDPP

ST/L00609X/1 GRIDPP

ST/J005665/1

ST/J004901/1

ST/K001604/1

ST/I005912/1

ST/M005356/1

Subjects

Science & Technology

Physical Sciences

Physics, Particles & Fields

Physics

COLLIDER SIGNATURES

hep-ex

Nuclear & Particles Physics

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics

0206 Quantum Physics

Publication Status

Published

Article Number

ARTN 235