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Transverse Momentum Resummation for t-channel single top quark production at the LHC
2018-08-09     Text Size:  A

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

 Chinese Academy of Sciences

Seminar

Title

题目

Transverse Momentum Resummation for t-channel single top quark production at the LHC

Speaker

报告人

Bin Yan (岩斌)

Affiliation

所在单位

Department of physics and Astronomy,Michigan State University 

Date

日期

201889日(周四)下午300

Venue

地点

Conference Room 6420, ITP new building

Abstract

摘要

We study the effect of multiple soft gluon radiation on the kinematical distributions of the t- channel single top quark production at the LHC. By applying the transverse momentum dependent factorization formalism, large logarithms (of the ratio of large invariant mass Q and small total transverse momentum $q_\perp$ of the single-top plus one-jet final state system) are resummed to all orders in the expansion of the strong interaction coupling at the accuracy of next-to-leading logarithm, including the complete next-to-leading order corrections. We show that the main difference from PYTHIA prediction lies on the inclusion of the exact color coherence effect between the initial and final states in our resummation calculation, which becomes more important when the final state jet is required to be in the forward region. We further propose a new experimental observable φ? to test the effect of multiple gluon radiation in the single-top events. The effect of bottom quark mass is also discussed. 

Contact person

所内联系人

于江浩

 

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