Electroweak Sudakov Corrections to New Physics Searches at the LHC

被引：25

作者：

Chiesa, Mauro ^{[1
,2
]}

Montagna, Guido ^{[1
,2
]}

Barze, Luca ^{[3
]}

Moretti, Mauro ^{[4
,5
]}

Nicrosini, Oreste ^{[2
]}

Piccinini, Fulvio ^{[2
]}

Tramontano, Francesco ^{[6
,7
]}

机构：

[1] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy

[2] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[3] CERN, PH TH Dept, CH-1211 Geneva, Switzerland

[4] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44100 Ferrara, Italy

[5] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[6] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

[7] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 12期

关键词：

LOOP LEADING LOGARITHMS; RADIATIVE-CORRECTIONS; TRANSVERSE-MOMENTUM; HADRONIC PRODUCTION; WEAK CORRECTIONS; TEV SCALE; W-BOSONS;

D O I：

10.1103/PhysRevLett.111.121801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compute the one-loop electroweak Sudakov corrections to the production process Z(nu(nu) over bar)+ n jets, with n = 1, 2, 3, in pp collisions at the LHC. It represents the main irreducible background to new physics searches at the energy frontier. The results are obtained at the leading and next-to-leading logarithmic accuracy by implementing the general algorithm of Denner and Pozzorini in the event generator for multiparton processes ALPGEN. For the standard selection cuts used by the ATLAS and CMS Collaborations, we show that the Sudakov corrections to the relevant observables can grow up to - 40% at root s p = 14 TeV. We also include the contribution due to undetected real radiation of massive gauge bosons, to show to what extent the partial cancellation with the large negative virtual corrections takes place in realistic event selections.

引用

页数：5

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