Abstract
We discuss the impact for light neutralinos in an effective minimal supersymmetric extension of the standard model of the recent results presented by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider for a search of supersymmetry in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 35pb-1. We find that, in the specific case of light neutralinos, efficiencies for the specific signature searched by ATLAS (jets+missing transverse energy and an isolated lepton) imply a lower sensitivity compared to CMS (which searches for jets+missing transverse energy). Focusing on the CMS bound, if squark soft masses of the three families are assumed to be degenerate, the combination of the ensuing constraint on squark and gluino masses with the experimental limit on the b→s+γ decay imply a lower bound on the neutralino mass mχ that can reach the value of 11.9 GeV, depending on the gluino mass. On the other hand, when the universality condition among squark soft parameters is relaxed, the lower bound on mχ is not constrained by the CMS measurement and then remains at the value 7.5 GeV derived in previous papers.
| Original language | English |
|---|---|
| Article number | 095016 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 83 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2011 May 23 |
Fingerprint
ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Impact of the recent results by the CMS and ATLAS collaborations at the CERN Large Hadron Collider on an effective minimal supersymmetric extension of the standard model. / Scopel, S.; Choi, Suyong; Fornengo, N.; Bottino, A.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 83, No. 9, 095016, 23.05.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Impact of the recent results by the CMS and ATLAS collaborations at the CERN Large Hadron Collider on an effective minimal supersymmetric extension of the standard model
AU - Scopel, S.
AU - Choi, Suyong
AU - Fornengo, N.
AU - Bottino, A.
PY - 2011/5/23
Y1 - 2011/5/23
N2 - We discuss the impact for light neutralinos in an effective minimal supersymmetric extension of the standard model of the recent results presented by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider for a search of supersymmetry in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 35pb-1. We find that, in the specific case of light neutralinos, efficiencies for the specific signature searched by ATLAS (jets+missing transverse energy and an isolated lepton) imply a lower sensitivity compared to CMS (which searches for jets+missing transverse energy). Focusing on the CMS bound, if squark soft masses of the three families are assumed to be degenerate, the combination of the ensuing constraint on squark and gluino masses with the experimental limit on the b→s+γ decay imply a lower bound on the neutralino mass mχ that can reach the value of 11.9 GeV, depending on the gluino mass. On the other hand, when the universality condition among squark soft parameters is relaxed, the lower bound on mχ is not constrained by the CMS measurement and then remains at the value 7.5 GeV derived in previous papers.
AB - We discuss the impact for light neutralinos in an effective minimal supersymmetric extension of the standard model of the recent results presented by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider for a search of supersymmetry in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 35pb-1. We find that, in the specific case of light neutralinos, efficiencies for the specific signature searched by ATLAS (jets+missing transverse energy and an isolated lepton) imply a lower sensitivity compared to CMS (which searches for jets+missing transverse energy). Focusing on the CMS bound, if squark soft masses of the three families are assumed to be degenerate, the combination of the ensuing constraint on squark and gluino masses with the experimental limit on the b→s+γ decay imply a lower bound on the neutralino mass mχ that can reach the value of 11.9 GeV, depending on the gluino mass. On the other hand, when the universality condition among squark soft parameters is relaxed, the lower bound on mχ is not constrained by the CMS measurement and then remains at the value 7.5 GeV derived in previous papers.
UR - http://www.scopus.com/inward/record.url?scp=79960774494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960774494&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.83.095016
DO - 10.1103/PhysRevD.83.095016
M3 - Article
AN - SCOPUS:79960774494
VL - 83
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 9
M1 - 095016
ER -