Search for quark compositeness with the dijet centrality ratio in pp collisions at √s=7  TeV

CMS Collaboration; Khachatryan, V; Aguiló, E; Amsler, C; Chiochia, V (2010). Search for quark compositeness with the dijet centrality ratio in pp collisions at √s=7 TeV. Physical Review Letters, 105(26):262001 -15pp.

Abstract

A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s=7  TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9  pb-1 collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.

Abstract

A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s=7  TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9  pb-1 collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.

Statistics

Citations

38 citations in Web of Science®
29 citations in Scopus®

Altmetrics

Detailed statistics

Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 2010 16 Feb 2011 15:47 05 Apr 2016 14:46 American Physical Society 0031-9007 https://doi.org/10.1103/PhysRevLett.105.262001 http://arxiv.org/abs/1010.4439

Preview
Content: Accepted Version
Filetype: PDF
Size: 394kB
View at publisher

Article Networks

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.