Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at root s = 7 TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36 pb(-1). The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Lambda(+) = 5.6 TeV (Lambda(-) = 6.7 TeV) for destructive (constructive) interference is obtained at the 95% confidence level.

Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at root s=7 TeV / V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., M., F., R., F., V. M., G., J., H., S., H., M., H., N., H., J., H., M., J., G., K., W., K., M., K., D., L., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 106:(2011), p. 201804. [10.1103/physrevlett.106.201804]

Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at root s=7 TeV

BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;TRACZYK, PIOTR WOJCIECH;SANTANASTASIO, FRANCESCO;
2011

Abstract

Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at root s = 7 TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36 pb(-1). The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Lambda(+) = 5.6 TeV (Lambda(-) = 6.7 TeV) for destructive (constructive) interference is obtained at the 95% confidence level.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at root s=7 TeV / V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., M., F., R., F., V. M., G., J., H., S., H., M., H., N., H., J., H., M., J., G., K., W., K., M., K., D., L., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 106:(2011), p. 201804. [10.1103/physrevlett.106.201804]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/385009
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