<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>W</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math>production at the LHC in the four-site Higgsless model

Accomando, Elena; Becciolini, Diego; Curtis, S. De; Dominici, D.; Fedeli, L.

doi:10.1103/physrevd.84.115014

Cited by 12 publications

(35 citation statements)

References 71 publications

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“…In terms of these four parameters, physical masses and couplings of the extra gauge bosons to ordinary matter can be obtained via a complete numerical algorithm. This is one of the main results of [26], where this computation was described at length, so we refer the reader to it for further details. The outcome is the ability to reliably and accurately describe the full parameter space of the 4-site model even in regions of low mass and high z where previously used approximations would fail.…”

Section: A Parameter Spacementioning

confidence: 75%

“…Its construction is presented in [21] while some of its phenomenological consequences are analysed in [25,26,27,28].…”

Section: The 4-site Model With a Singlet Composite Scalar Statementioning

confidence: 99%

“…other than z (which, as shown in [26], is a good approximation of the ratio between physical In terms of the above quantities, the Lagrangian describing the interaction between gauge bosons and fermions has the following expression:…”

Section: A Parameter Spacementioning

confidence: 99%

“…(27), considering a luminosity of 10 fb −1 . Here, we note that, for almost all masses and z values considered, the So cuts allow for the largest statistical significances.…”

Section: Distributionsmentioning

confidence: 99%

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Charged diboson production at the LHC in a four-site model with a composite Higgs boson

et al. 2012

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We investigate the scope of the LHC in probing the parameter space of a 4-site model supplemented by one composite Higgs state, assuming all past, current and future energy and luminosity stages of the CERN machine. We concentrate on the yield of charged di-boson production giving two opposite-charge different-flavour leptons and missing (transverse) energy, i.e., events induced via the subprocess qq → e + ν e µ −ν µ + c.c., which enables the production in the intermediate step of all additional neutral and charged gauge bosons belonging to the spectrum of this model, some of which in resonant topologies. We find this channel accessible over the background at all LHC configurations after a dedicated cut-based analysis. We finally compare the yield of the di-boson mode to that of Drell-Yan processes and establish that they have complementary strengths, one covering regions of parameter space precluded to the others and vice versa.

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Section: A Parameter Spacementioning

confidence: 75%

“…Its construction is presented in [21] while some of its phenomenological consequences are analysed in [25,26,27,28].…”

Section: The 4-site Model With a Singlet Composite Scalar Statementioning

confidence: 99%

Section: A Parameter Spacementioning

confidence: 99%

“…(27), considering a luminosity of 10 fb −1 . Here, we note that, for almost all masses and z values considered, the So cuts allow for the largest statistical significances.…”

Section: Distributionsmentioning

confidence: 99%

See 2 more Smart Citations

Charged diboson production at the LHC in a four-site model with a composite Higgs boson

et al. 2012

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“…In particular, the negative interference resulted in observed weaker exclusion limits in the case of the left-interacting compared to the right-interacting W ′ [15]. The interference and its consequences were also discussed in papers [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The specificity of searches for W′, Z′ and γ′ coming from extra dimensions

Boos

Bunichev

Perfilov

et al. 2014

J. High Energ. Phys.

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Abstract:We discuss the specificity of searches for hypothetical W ′ , Z ′ and γ ′ bosons at hadron colliders in single top quark and µ + ν µ production and Drell-Yan processes assuming these particles to be the Kaluza-Klein excitations of the gauge bosons of the Standard Model. In this case any process mediated by W is also mediated by the whole KK tower of its excitations, whereas to the processes mediated by Z and γ there is not only a contribution from their KK towers, but also from that of the graviton. The contributions of the towers above W ′ , Z ′ and γ ′ and above the first excitation of the graviton are included with the help of effective four-fermion Lagrangians. We compute the cross-sections of these processes taking into account the contributions of the Standard Model gauge bosons, of their first KK modes and of the corresponding KK towers and discuss the impact of the interference between them. For pp-collisions at the LHC with the center of mass energy 14 TeV we found specific changes of the distribution tails due to the interference effects. Such a modification of distribution tails is characteristic for the processes mediated by particles coming from extra dimensions and should always be taken into account when looking for them.

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Heavy vector triplets: bridging theory and data

Pappadopulo

Thamm

Torre

et al. 2014

J. High Energ. Phys.

202

299

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We introduce a model-independent strategy to study narrow resonances which we apply to a heavy vector triplet of the Standard Model (SM) group for illustration. The method is based on a simplified phenomenological Lagrangian which reproduces a large class of explicit models. Firstly, this allows us to derive robust model-independent phenomenological features and, conversely, to identify the peculiarities of different explicit realizations. Secondly, limits on σ × BR can be converted into bounds on a few relevant parameters in a fully analytic way, allowing for an interpretation in any given explicit model. Based on the available 8 TeV LHC analyses, we derive current limits and interpret them for vector triplets arising in weakly coupled (gauge) and strongly coupled (composite) extensions of the SM. We point out that a model-independent limit setting procedure must be based on purely on-shell quantities, like σ × BR. Finite width effects altering the limits can be considerably reduced by focusing on the on-shell signal region. We illustrate this aspect with a study of the invariant mass distribution in di-lepton searches and the transverse mass distribution in lepton-neutrino final states. In addition to this paper we provide a set of online tools available at a dedicated webpage [1].

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W′production at the LHC in the four-site Higgsless model

Cited by 12 publications

References 71 publications

Charged diboson production at the LHC in a four-site model with a composite Higgs boson

Charged diboson production at the LHC in a four-site model with a composite Higgs boson

The specificity of searches for W′, Z′ and γ′ coming from extra dimensions

Heavy vector triplets: bridging theory and data

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