Enhancing the doubly-longitudinal polarization in WZ production at the LHC

Thi Nhung Dao; Duc Ninh Le

doi:10.15625/0868-3166/18077

Author affiliations

Authors

Thi Nhung Dao Faculty of Fundamental Sciences, PHENIKAA University, Hanoi 12116, Vietnam
Duc Ninh Le Faculty of Fundamental Sciences, PHENIKAA University, Hanoi 12116, Vietnam https://orcid.org/0000-0003-0823-5157

DOI:

https://doi.org/10.15625/0868-3166/18077

Abstract

We present new results for the theoretical prediction of doubly-polarized cross sections of \(WZ\) events at the LHC using leptonic decays. Compared to the previous studies, two new kinematic cuts are considered. These cuts are designed to enhance the doubly-longitudinal (LL) polarization and, at the same time, study the Radiation Amplitude Zero effect. We found a new cut on the rapidity separation between the \(Z\) boson and the electron from the \(W\) decay which makes the LL fraction largest, namely \(|\Delta y_{Z,e}| < 0.5\). This result is obtained at the next-to-leading order in the strong and electroweak couplings.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

References

[ATLAS collaboration], Observation of gauge boson joint-polarisation states in (Wpm Z) production from pp collisions at (sqrt{s} = 13) TeV with the ATLAS detector, Phys. Lett. B 843 (2023) 137895

J. A. Aguilar-Saavedra and J. Bernabeu, Breaking down the entire W boson spin observables from its decay, Phys. Rev. D 93 (2016) 011301 DOI: https://doi.org/10.1103/PhysRevD.93.011301

A. Denner and G. Pelliccioli, Polarized electroweak bosons in (W^+W^-) production at the LHC including NLO QCD effects, J. High. Energy Phys. 09 (2020) 164. DOI: https://doi.org/10.1007/JHEP09(2020)164

A. Denner and G. Pelliccioli, NLO QCD predictions for doubly-polarized WZ production at the LHC, Phys. Lett. B 814 (2021) 136107 DOI: https://doi.org/10.1016/j.physletb.2021.136107

D. N. Le and J. Baglio, Doubly-polarized WZ hadronic cross sections at NLO QCD + EW accuracy, Eur. Phys. J. C 82 (2022) 917 DOI: https://doi.org/10.1140/epjc/s10052-022-10887-9

D. N. Le, J. Baglio and T. N. Dao, Doubly-polarized WZ hadronic production at NLO QCD+EW: calculation method and further results, Eur. Phys. J. C 82 (2022) 1103 DOI: https://doi.org/10.1140/epjc/s10052-022-11032-2

A. Denner, C. Haitz and G. Pelliccioli, NLO QCD corrections to polarised di-boson production in semi-leptonic final states, Phys. Rev. D 107 (2023) 053004. DOI: https://doi.org/10.1103/PhysRevD.107.053004

A. Denner and G. Pelliccioli, NLO EW and QCD corrections to polarized ZZ production in the four-chargedlepton channel at the LHC, J. High. Energy Phys. 2021 (2021) 97. DOI: https://doi.org/10.1007/JHEP10(2021)097

R. Poncelet and A. Popescu, NNLO QCD study of polarised (W^+W^-) production at the LHC, J. High. Energy Phys. 07 (2021) 023. DOI: https://doi.org/10.1007/JHEP07(2021)023

ATLAS collaboration, M. Aaboud et al., Measurement of the (Wpm Z) boson pair-production cross section in pp collisions at (sqrt{s} = 13) TeV with the ATLAS Detector, Phys. Lett. B 762 (2016) 1.

ATLAS collaboration, M. Aaboud et al., Measurement of (Wpm Z) production cross sections and gauge boson

polarisation in pp collisions at (sqrt{s} = 13) TeV with the ATLAS detector, Eur. Phys. J. C 79 (2019) 535.

R. Franceschini, G. Panico, A. Pomarol, F. Riva and A. Wulzer, Electroweak Precision Tests in High-Energy Diboson Processes, J. High. Energy Phys. 02 (2018) 111. DOI: https://doi.org/10.1007/JHEP02(2018)111

U. Baur, T. Han and J. Ohnemus, Amplitude zeros in W+- Z production, Phys. Rev. Lett. 72 (1994) 3941. DOI: https://doi.org/10.1103/PhysRevLett.72.3941

A. Denner, S. Dittmaier, M. Roth and D. Wackeroth, Electroweak radiative corrections to (e^+e^- to WW to 4) fermions in double pole approximation: The RACOONWW approach, Nucl. Phys. B 587 (2000) 67. DOI: https://doi.org/10.1016/S0550-3213(00)00511-3

G. Watt and R. S. Thorne, Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs, J. High. Energy Phys. 08 (2012) 052. DOI: https://doi.org/10.1007/JHEP08(2012)052

J. Gao and P. Nadolsky, A meta-analysis of parton distribution functions, J. High. Energy Phys. 07 (2014) 035. DOI: https://doi.org/10.1007/JHEP07(2014)035

L. A. Harland-Lang, A. D. Martin, P. Motylinski and R. S. Thorne, Parton distributions in the LHC era: MMHT 2014 PDFs, Eur. Phys. J. C 75 (2015) 204. DOI: https://doi.org/10.1140/epjc/s10052-015-3397-6

NNPDF collaboration, R. D. Ball et al., Parton distributions for the LHC Run II, J. High. Energy Phys. 04 (2015) 040. DOI: https://doi.org/10.1007/JHEP04(2015)040

J. Butterworth et al., PDF4LHC recommendations for LHC Run II, J. Phys. G 43 (2016) 023001. DOI: https://doi.org/10.1088/0954-3899/43/2/023001

S. Dulat, T.-J. Hou, J. Gao, M. Guzzi, J. Huston, P. Nadolsky et al., New parton distribution functions from a global analysis of quantum chromodynamics, Phys. Rev. D 93 (2016) 033006. DOI: https://doi.org/10.1103/PhysRevD.93.033006

D. de Florian, G. F. R. Sborlini and G. Rodrigo, QED corrections to the Altarelli-Parisi splitting functions, Eur. Phys. J. C 76 (2016) 282. DOI: https://doi.org/10.1140/epjc/s10052-016-4131-8

S. Carrazza, S. Forte, Z. Kassabov, J. I. Latorre and J. Rojo, An Unbiased Hessian Representation for Monte Carlo PDFs, Eur. Phys. J. C 75 (2015) 369. DOI: https://doi.org/10.1140/epjc/s10052-015-3590-7

A. Manohar, P. Nason, G. P. Salam and G. Zanderighi, How bright is the proton? A precise determination of the photon parton distribution function, Phys. Rev. Lett. 117 (2016) 242002. DOI: https://doi.org/10.1103/PhysRevLett.117.242002

A. V. Manohar, P. Nason, G. P. Salam and G. Zanderighi, The Photon Content of the Proton, J. High. Energy Phys. 12 (2017) 046. DOI: https://doi.org/10.1007/JHEP12(2017)046

A. Buckley, J. Ferrando, S. Lloyd, K. Nordström, B. Page, M. Rüfenacht et al., LHAPDF6: parton density access in the LHC precision era, Eur. Phys. J. C 75 (2015) 132. DOI: https://doi.org/10.1140/epjc/s10052-015-3318-8