arXiv : Same-sign WW scattering at the LHC: can we discover BSM effects before discovering new states?

Kalinowski, Jan; Tkaczyk, Sławomir; Szleper, Michał; Rosiek, Janusz; Pokorski, Stefan; Kozów, Paweł

doi:10.1140/epjc/s10052-018-5885-y

Article
Report number	arXiv:1802.02366 ; CERN-TH-2017-269
Title	Same-sign WW scattering at the LHC: can we discover BSM effects before discovering new states?
Related title	Same-sign WW scattering at the LHC: can we discover BSM effects before discovering new states?
Author(s)	Kalinowski, Jan (CERN ; Warsaw U.) ; Kozów, Paweł (Warsaw U.) ; Pokorski, Stefan (Warsaw U.) ; Rosiek, Janusz (Warsaw U.) ; Szleper, Michał (Warsaw, Inst. Nucl. Studies ; NCBJ, Swierk) ; Tkaczyk, Sławomir (Fermilab)
Publication	2018-05-22
Imprint	2018-02-07
Number of pages	24
Note	24 pages
In:	Eur. Phys. J. C 78 (2018) 403
DOI	10.1140/epjc/s10052-018-5885-y
Subject category	hep-ph ; Particle Physics - Phenomenology
Abstract	It is possible that measurements of vector boson scattering (VBS) at the LHC will reveal disagreement with Standard Model predictions, but no new particles will be observed directly. The task is then to learn as much as possible about the new physics from a VBS analysis carried within the framework of the Effective Field Theory (EFT). In this paper we discuss issues related to the correct usage of the EFT when the WW invariant mass is not directly accessible experimentally, as in purely leptonic W decay channels. The strategies for future data analyses in case such scenario indeed occurs are proposed.
Copyright/License	publication: (License: CC-BY-4.0) preprint: (License: arXiv nonexclusive-distrib 1.0)

$Cartoon plot which shows the regions in $f_i$ and $\Lambda$ (for an arbitrary higher-dimension operator ${\cal O}_i$) in terms of BSM signal observability and applicability of EFT ``models$ $Typical examples of kinematic distributions used for the assessment of BSM signal significances. Shown are the distributions of $M_{ll}$, $M_{o1}$ and $R_{pT}$ (in log scale): in the Standard Model (solid lines), with $f_{T1}$=0.1/TeV$^{-4}$ and the high-$M_{WW}$ tail treatment according to Eq.~(\ref{unitarized}) (dashed lines), and with $f_{T1}$=0.1/TeV$^{-4}$ and the high-$M_{WW}$ tail treatment according to Eq.~(\ref{dsigma}) (dotted lines). Assumed is $\sqrt{s}$ = 14 TeV and an integrated luminosity of 3 ab$^{-1}$.$ $Typical examples of BSM signal significances computed as a function of $f_{S0}$ (upper row) and $f_{T1}$ (lower row) based on different kinematic distributions. Here the $\Lambda$ cutoff is assumed equal to the unitarity limit. Shown are predictions obtained by using Eq.~(\ref{dsigma}) (solid lines) and Eq.~(\ref{unitarized}) (dashed lines). The dotted lines show the difference in standard deviations between the two respective calculations. Assumed is $\sqrt{s}$ = 14 TeV and an integrated luminosity of 3 ab$^{-1}$.$ Show more plots

Corresponding record in: Inspire

Back to search

レコード　生成： 2018-02-09, 最終変更： 2021-11-12

ほとんど同じレコード

Article from SCOAP3: