PhysicsResultsSUS10003 < CMSPublic

CMSPublic Web>PhysicsResults>PhysicsResultsSUS>PhysicsResultsSUS10003 (2013-05-13, RobBainbridge) (raw view)

---+!! Search for Supersymmetry in pp Collisions at 7 !TeV in Events with Jets  and Missing Transverse Energy

This analysis is published in [[http://dx.doi.org/10.1016/j.physletb.2011.03.021][Phys.Lett. B698 (2011) 196-218]] and is also available at [[http://arxiv.org/abs/1101.1628][arXiv:1101.1628]].

---++ Abstract

A search for supersymmetry with R-parity conservation in proton-proton collisions at a centre-of-mass energy of 7 !TeV is presented. The data correspond to an integrated luminosity of 35 pb<sup> -1</sup> collected by the CMS experiment at the LHC. The search is performed in events with jets and significant missing transverse energy, characteristic of the decays of heavy, pair-produced squarks and gluinos. The primary background, from standard model multijet production, is reduced by several orders of magnitude to a negligible level by the application of a set of robust kinematic requirements. With this selection, the data are consistent with the standard model backgrounds, namely t &#772;t, W + jet and Z + jet production, which are estimated from data control samples. Limits are set on the parameters of the constrained minimal supersymmetric extension of the standard model. These limits extend those set previously by experiments at the Tevatron and LEP colliders.

---++ Plots from the paper

%TABLE{ datavalign="middle" }%
| *Figure * | *Abbreviated Caption* |
| [[%ATTACHURL%/RA1_ExclusionLimit_tanb3.pdf][<img src="%ATTACHURLPATH%/RA1_ExclusionLimit_tanb3.png" alt="RA1_ExclusionLimit_tanb3.pdf" width=300/>]] | CMSSM exclusion plot for tanb=3. |
| [[%ATTACHURLPATH%/AllcombinedHT_all.pdf][<img src="%ATTACHURLPATH%/AllcombinedHT_all.png" alt="AllcombinedHT_all.pdf" width=300/>]] | H<sub>T</sub> distribution for all Jets. |
| [[%ATTACHURLPATH%/350GevAlphaT_all.pdf][<img src="%ATTACHURLPATH%/350GevAlphaT_all.png" alt="350GevAlphaT_all.pdf" width=300/>]] | &#945;<sub>T</sub> after HT > 350 !GeV selection for dijet events. |
| [[%ATTACHURLPATH%/n350GevAlphaT_all.pdf][<img src="%ATTACHURLPATH%/n350GevAlphaT_all.png" alt="n350GevAlphaT_all.pdf" width=300/>]] | &#945;<sub>T</sub> after HT > 350 !GeV selection for >=3 jet events. |
| [[%ATTACHURLPATH%/AllCutscombinedBiasedDeltaPhi_after_alphaT_55_all.pdf][<img src="%ATTACHURLPATH%/AllCutscombinedBiasedDeltaPhi_after_alphaT_55_all.png" alt="AllCutscombinedBiasedDeltaPhi_after_alphaT_55_all.png" width=300/>]] | Dphi* after final selection |
| [[%ATTACHURLPATH%/AllCutscombinedEffectiveMass_after_alphaT_55_all.pdf][<img src="%ATTACHURLPATH%/AllCutscombinedEffectiveMass_after_alphaT_55_all.png" alt="AllCutscombinedEffectiveMass_after_alphaT_55_all.png" width=300/>]] | Effective Mass Meff after final selection. |
| [[%ATTACHURLPATH%/Ratio_Multi2Incl-final.pdf][<img src="%ATTACHURLPATH%/Ratio_Multi2Incl-final.png" alt="Ratio_Multi2Incl-final.pdf" width=300/>]] | &#945;<sub>T</sub> ratio vs HT for alphaT cut values of 0.51 and 0.55. |
| [[%ATTACHURLPATH%/Ratio_Multi2Incl-final-lmx.pdf][<img src="%ATTACHURLPATH%/Ratio_Multi2Incl-final-lmx.png" alt="Ratio_Multi2Incl-final-lmx.pdf" width=300/>]] | &#945;<sub>T</sub> ratio vs HT in presence of LM1 signal. |

---++[[http://cdsweb.cern.ch/record/1320934/files/SUS03view-9.pdf][Link to SUS-10-003 paper in CDS ]]

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
png	AllCutscombinedBiasedDeltaPhi_after_alphaT_55_all.png	r1	manage	162.6 K	2011-02-19 - 08:29	UnknownUser
pdf	RA1_ExclusionLimit_tanb3.pdf	r1	manage	22.0 K	2011-02-19 - 08:17	UnknownUser

Topic revision: r16 - 2013-05-13 - RobBainbridge

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