Measurement of double-differential cross sections for top quark pair production in pp collisions at s√=8 TeV and impact on parton distribution functions

Name: Measurement of double-differential cross sections for top quark pair production in pp collisions at s√=8 TeV and impact on parton distribution functions
Author: Sirunyan, A. M., Işıldak, Bora

İsim	Measurement of double-differential cross sections for top quark pair production in pp collisions at s√=8 TeV and impact on parton distribution functions
Yazar	Sirunyan, A. M., Işıldak, Bora
Basım Tarihi:	2017
Basım Yeri	- Springer International Publishing
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1434-6044
Kayıt Numarası	8dae6425-dbf4-4d83-af7b-8ca8288cf361
Lokasyon	Natural and Mathematical Sciences
Tarih	2017
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	Normalized double-differential cross sections for top quark pair ( tt¯tt¯ ) production are measured in pp collisions at a centre-of-mass energy of 8 TeVTeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 fb−1fb−1 . The measurement is performed in the dilepton e±μ∓e±μ∓ final state. The tt¯tt¯ cross section is determined as a function of various pairs of observables characterizing the kinematics of the top quark and tt¯tt¯ system. The data are compared to calculations using perturbative quantum chromodynamics at next-to-leading and approximate next-to-next-to-leading orders. They are also compared to predictions of Monte Carlo event generators that complement fixed-order computations with parton showers, hadronization, and multiple-parton interactions. Overall agreement is observed with the predictions, which is improved when the latest global sets of proton parton distribution functions are used. The inclusion of the measured tt¯tt¯ cross sections in a fit of parametrized parton distribution functions is shown to have significant impact on the gluon distribution.
DOI	10.1140/epjc/s10052-017-4984-5
Cilt	77

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Measurement of double-differential cross sections for top quark pair production in pp collisions at s√=8 TeV and impact on parton distribution functions

Yazar Sirunyan, A. M., Işıldak, Bora

Basım Tarihi 2017

Basım Yeri - Springer International Publishing

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1434-6044

Kayıt Numarası 8dae6425-dbf4-4d83-af7b-8ca8288cf361

Lokasyon Natural and Mathematical Sciences

Tarih 2017

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin Normalized double-differential cross sections for top quark pair ( tt¯tt¯ ) production are measured in pp collisions at a centre-of-mass energy of 8 TeVTeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 fb−1fb−1 . The measurement is performed in the dilepton e±μ∓e±μ∓ final state. The tt¯tt¯ cross section is determined as a function of various pairs of observables characterizing the kinematics of the top quark and tt¯tt¯ system. The data are compared to calculations using perturbative quantum chromodynamics at next-to-leading and approximate next-to-next-to-leading orders. They are also compared to predictions of Monte Carlo event generators that complement fixed-order computations with parton showers, hadronization, and multiple-parton interactions. Overall agreement is observed with the predictions, which is improved when the latest global sets of proton parton distribution functions are used. The inclusion of the measured tt¯tt¯ cross sections in a fit of parametrized parton distribution functions is shown to have significant impact on the gluon distribution.

DOI 10.1140/epjc/s10052-017-4984-5

Cilt 77