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Paper IPM / Particles / 11897

School of Particles and Accelerator

Title:

Measurement of the Ratio of the 3-jet to 2-jet Cross Sections in pp Collisions at sqrt(s) = 7 TeV

Author(s):

1 .	Hessamadin Arfaei
2 .	Hamed Bakhshiansohi
3 .	Seyed Mohsen Etesami
4 .	Ali Fahim
5 .	Majid Hashemi
6 .	Abideh Jafari
7 .	Mohsen Khakzad
8 .	A Mohammadi
9 .	Mojtaba Mohammadi Najafabadi
10 .	Saeid Paktinat Mehdiabadi
11 .	Batool Safarzadeh
12 .	Maryam Zeinali

Status:

Submitted

Journal:

Phys. Lett. B

Year:

2011

Supported by:

IPM

Abstract:

A measurement of the ratio of the inclusive 3-jet to 2-jet cross sections as a function of the total jet transverse momentum, HT, in the range 0.2 <H(T)< 2.5 TeV is presented. The data have been collected at a proton-proton centre-of-mass energy of 7 TeV with the CMS detector at the LHC, and correspond to an integrated luminosity of 36 pb(-1). Comparisons are made between the data and the predictions of different QCD-based Monte Carlo models for multijet production. All models considered in this study are consistent with the data for H(T)> 0.5 TeV. This measurement extends to an HT range that has not been explored before

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