Ratios of W and Z cross sections at large boson $p_T$ as a constraint on PDFs and background to new physics

Malik, Sarah Alam; Watt, Graeme

doi:10.1007/JHEP02(2014)025

Ratios of W and Z cross sections at large boson $$p_T$$ as a constraint on PDFs and background to new physics

Journal Article · Wed Feb 05 00:00:00 EST 2014 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP02(2014)025· OSTI ID:1226265

Malik, Sarah Alam ^[1]; Watt, Graeme ^[2]

Rockefeller Univ., New York, NY (United States)
Universitat Zurich (Switzerland)

We motivate a measurement of various ratios of W and Z cross sections at the Large Hadron Collider (LHC) at large values of the boson transverse momentum (p _T ≳ M W,Z ). We study the dependence of predictions for these cross-section ratios on the multiplicity of associated jets, the boson p _T and the LHC centre-of-mass energy. We present the flavour decomposition of the initial-state partons and an evaluation of the theoretical uncertainties. We also show that the W ⁺ /W ^-ratio is sensitive to the up-quark to down-quark ratio of parton distribution functions (PDFs), while other theoretical uncertainties are negligible, meaning that a precise measurement of the W ⁺ /W ^- ratio at large boson p _T values could constrain the PDFs at larger momentum fractions x than the usual inclusive W charge asymmetry. The W ^± /Z ratio is insensitive to PDFs and most other theoretical uncertainties, other than possibly electroweak corrections, and a precise measurement will therefore be useful in validating theoretical predictions needed in data-driven methods, such as using W (→ ℓν) + jets events to estimate the Z(→ νν¯) + jets background in searches for new physics at the LHC. Furthermore, the differential W and Z cross sections themselves, dσ/dp _T , have the potential to constrain the gluon distribution, provided that theoretical uncertainties from higher-order QCD and electroweak corrections are brought under control, such as by inclusion of anticipated next-to-next-to-leading order QCD corrections.

View Accepted Manuscript (DOE)

Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1226265

Alternate ID(s):: OSTI ID: 22470354

Report Number(s):: FERMILAB-PUB--13-106-PPD; arXiv eprint number arXiv:1304.2424

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 25 Vol. 2014; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

References (60)

Jet production rates in association with W and Z bosons in pp collisions at $ \sqrt {s} = 7 {\text{TeV}} $ Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Journal of High Energy Physics, Vol. 2012, Issue 1 https://doi.org/10.1007/JHEP01(2012)010	journal	January 2012
Search for supersymmetry in final states with missing transverse energy and 0, 1, 2, or ≥3 b-quark jets in 7 TeV pp collisions using the variable α T Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Journal of High Energy Physics, Vol. 2013, Issue 1 https://doi.org/10.1007/JHEP01(2013)077	journal	January 2013
Two-loop QCD helicity amplitudes for $ q\overline q $ → W ±γ and $ q\overline q $ → Z 0γ Gehrmann, Thomas; Tancredi, Lorenzo Journal of High Energy Physics, Vol. 2012, Issue 2 https://doi.org/10.1007/JHEP02(2012)004	journal	February 2012
Measurement of the cross-section for Z → e+e- production in pp collisions at $\sqrt{s}=7$ TeV Aaij, R.; Beteta, C. Abellan; Adametz, A. Journal of High Energy Physics, Vol. 2013, Issue 2 https://doi.org/10.1007/JHEP02(2013)106	journal	February 2013
Transverse-momentum spectra of electroweak bosons near threshold at NNLO Becher, Thomas; Bell, Guido; Lorentzen, Christian Journal of High Energy Physics, Vol. 2014, Issue 2 https://doi.org/10.1007/JHEP02(2014)004	journal	February 2014
Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector Aad, G.; Abajyan, T.; Abbott, B. Journal of High Energy Physics, Vol. 2013, Issue 4 https://doi.org/10.1007/JHEP04(2013)075	journal	April 2013
Two-loop QCD helicity amplitudes for gg → Z g and gg →Zγ Gehrmann, Thomas; Tancredi, Lorenzo; Weihs, Erich Journal of High Energy Physics, Vol. 2013, Issue 4 https://doi.org/10.1007/JHEP04(2013)101	journal	April 2013
Parton distribution benchmarking with LHC data Ball, Richard D.; Carrazza, Stefano; Del Debbio, Luigi Journal of High Energy Physics, Vol. 2013, Issue 4 https://doi.org/10.1007/JHEP04(2013)125	journal	April 2013
Electroweak corrections and Bloch-Nordsieck violations in 2-to-2 processes at the LHC Stirling, W. J.; Vryonidou, E. Journal of High Energy Physics, Vol. 2013, Issue 4 https://doi.org/10.1007/JHEP04(2013)155	journal	April 2013
Electroweak corrections to dilepton + jet production at hadron colliders Denner, Ansgar; Dittmaier, Stefan; Kasprzik, Tobias Journal of High Energy Physics, Vol. 2011, Issue 6 https://doi.org/10.1007/JHEP06(2011)069	journal	June 2011
MadGraph 5: going beyond Alwall, Johan; Herquet, Michel; Maltoni, Fabio Journal of High Energy Physics, Vol. 2011, Issue 6 https://doi.org/10.1007/JHEP06(2011)128	journal	June 2011
Inclusive W and Z production in the forward region at $ \sqrt {s} = 7\,{\text{TeV}} $ Aaij, R.; Abellan Beteta, C.; Adametz, A. Journal of High Energy Physics, Vol. 2012, Issue 6 https://doi.org/10.1007/JHEP06(2012)058	journal	June 2012
Higgs boson self-coupling measurements using ratios of cross sections Goertz, Florian; Papaefstathiou, Andreas; Yang, Li Lin Journal of High Energy Physics, Vol. 2013, Issue 6 https://doi.org/10.1007/JHEP06(2013)016	journal	June 2013
Measurement of the production cross section of jets in association with a Z boson in pp collisions at $ \sqrt{s}=7 $ TeV with the ATLAS detector Aad, G.; Abajyan, T.; Abbott, B. Journal of High Energy Physics, Vol. 2013, Issue 7 https://doi.org/10.1007/JHEP07(2013)032	journal	July 2013
PDF dependence of Higgs cross sections at the Tevatron and LHC: response to recent criticism Thorne, R. S.; Watt, G. Journal of High Energy Physics, Vol. 2011, Issue 8 https://doi.org/10.1007/JHEP08(2011)100	journal	August 2011
Cross section ratios between different CM energies at the LHC: opportunities for precision measurements and BSM sensitivity Mangano, Michelangelo L.; Rojo, Juan Journal of High Energy Physics, Vol. 2012, Issue 8 https://doi.org/10.1007/JHEP08(2012)010	journal	August 2012
Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs Watt, G.; Thorne, R. S. Journal of High Energy Physics, Vol. 2012, Issue 8 https://doi.org/10.1007/JHEP08(2012)052	journal	August 2012
Giant QCD K-factors beyond NLO Rubin, Mathieu; Salam, Gavin P.; Sapeta, Sebastian Journal of High Energy Physics, Vol. 2010, Issue 9 https://doi.org/10.1007/JHEP09(2010)084	journal	September 2010
Parton distribution function dependence of benchmark Standard Model total cross sections at the 7 TeV LHC Watt, G. Journal of High Energy Physics, Vol. 2011, Issue 9 https://doi.org/10.1007/JHEP09(2011)069	journal	September 2011
Using γ + jets production to calibrate the Standard Model $ Z\left( { \to v\bar{v}} \right) $ + jets background to new physics processes at the LHC Ask, S.; Parker, M. A.; Sandova, T. Journal of High Energy Physics, Vol. 2011, Issue 10 https://doi.org/10.1007/JHEP10(2011)058	journal	October 2011
Measurement of the inclusive W and Z production cross sections in pp collisions at $ \sqrt {s} = 7 $ TeV with the CMS experiment Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Journal of High Energy Physics, Vol. 2011, Issue 10 https://doi.org/10.1007/JHEP10(2011)132	journal	October 2011
Search for supersymmetry in hadronic final states using M T2 in pp collisions at $ \sqrt{s}=7 $ TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Journal of High Energy Physics, Vol. 2012, Issue 10 https://doi.org/10.1007/JHEP10(2012)018	journal	October 2012
Hard semi-inclusive processes in QCD Dokshitzer, Yu. L.; D'yakonov, D. I.; Troyan, S. I. Physics Letters B, Vol. 78, Issue 2-3 https://doi.org/10.1016/0370-2693(78)90025-4	journal	September 1978
Lepton pair production at large transverse momentum in second order QCD Ellis, R. K.; Martinelli, G.; Petronzio, R. Nuclear Physics B, Vol. 211, Issue 1 https://doi.org/10.1016/0550-3213(83)90188-8	journal	January 1983
Transverse momentum distribution in Drell-Yan pair and W and Z boson production Collins, J. C.; Soper, Davison E.; Sterman, George Nuclear Physics B, Vol. 250, Issue 1-4 https://doi.org/10.1016/0550-3213(85)90479-1	journal	January 1985
The complete computation of high-pT W and Z production in second-order QCD Arnold, Peter B.; Hall Reno, M. Nuclear Physics B, Vol. 319, Issue 1 https://doi.org/10.1016/0550-3213(89)90600-7	journal	June 1989
W and Z transverse momentum distributions: resummation in qT-space Ellis, R. K.; Veseli, Siniša Nuclear Physics B, Vol. 511, Issue 3 https://doi.org/10.1016/S0550-3213(97)00655-X	journal	February 1998
One-loop weak corrections to hadronic production of Z bosons at large transverse momenta Kühn, Johann H.; Kulesza, A.; Pozzorini, S. Nuclear Physics B, Vol. 727, Issue 1-2 https://doi.org/10.1016/j.nuclphysb.2005.08.019	journal	October 2005
Electroweak corrections to W-boson hadroproduction at finite transverse momentum Hollik, W.; Kasprzik, T.; Kniehl, B. A. Nuclear Physics B, Vol. 790, Issue 1-2 https://doi.org/10.1016/j.nuclphysb.2007.09.013	journal	February 2008
Electroweak corrections to hadronic production of W bosons at large transverse momenta Kühn, Johann H.; Kulesza, A.; Pozzorini, S. Nuclear Physics B, Vol. 797, Issue 1-2 https://doi.org/10.1016/j.nuclphysb.2007.12.029	journal	July 2008
Parton distributions with LHC data Ball, Richard D.; Bertone, Valerio; Carrazza, Stefano Nuclear Physics B, Vol. 867, Issue 2 https://doi.org/10.1016/j.nuclphysb.2012.10.003	journal	February 2013
MCFM for the Tevatron and the LHC Campbell, John M.; Ellis, R. K. Nuclear Physics B - Proceedings Supplements, Vol. 205-206 https://doi.org/10.1016/j.nuclphysbps.2010.08.011	journal	August 2010
One-loop weak corrections to γ/Z hadro-production at finite transverse momentum Maina, Ezio; Moretti, Stefano; Ross, Douglas A. Physics Letters B, Vol. 593, Issue 1-4 https://doi.org/10.1016/j.physletb.2004.04.043	journal	July 2004
Logarithmic electroweak corrections to hadronic Z+1 jet production at large transverse momentum Kühn, Johann H.; Kulesza, A.; Pozzorini, S. Physics Letters B, Vol. 609, Issue 3-4 https://doi.org/10.1016/j.physletb.2005.01.059	journal	March 2005
Squark and gluino production with jets Plehn, T.; Rainwater, D.; Skands, P. Physics Letters B, Vol. 645, Issue 2-3 https://doi.org/10.1016/j.physletb.2006.12.009	journal	February 2007
Electroweak corrections to large transverse momentum production of W bosons at the LHC Kühn, Johann H.; Kulesza, A.; Pozzorini, S. Physics Letters B, Vol. 651, Issue 2-3 https://doi.org/10.1016/j.physletb.2007.06.028	journal	July 2007
Production of Drell–Yan lepton pairs in hadron collisions: Transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy Bozzi, Giuseppe; Catani, Stefano; Ferrera, Giancarlo Physics Letters B, Vol. 696, Issue 3 https://doi.org/10.1016/j.physletb.2010.12.024	journal	January 2011
Theoretical issues in PDF determination and associated uncertainties Ball, Richard D.; Bertone, Valerio; Del Debbio, Luigi Physics Letters B, Vol. 723, Issue 4-5 https://doi.org/10.1016/j.physletb.2013.05.019	journal	June 2013
New Generation of Parton Distributions with Uncertainties from Global QCD Analysis Pumplin, Jonathan; Stump, Daniel Robert; Huston, Joey Journal of High Energy Physics, Vol. 2002, Issue 07 https://doi.org/10.1088/1126-6708/2002/07/012	journal	July 2002
ALPGEN, a generator for hard multiparton processes in hadronic collisions Mangano, Michelangelo L.; Piccinini, Fulvio; Polosa, Antonio D. Journal of High Energy Physics, Vol. 2003, Issue 07 https://doi.org/10.1088/1126-6708/2003/07/001	journal	July 2003
Electroweak corrections to hadronic photon production at large transverse momenta Kühn, Johann H.; Kulesza, Anna; Pozzorini, Stefano Journal of High Energy Physics, Vol. 2006, Issue 03 https://doi.org/10.1088/1126-6708/2006/03/059	journal	March 2006
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
The anti- k _t jet clustering algorithm Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory Journal of High Energy Physics, Vol. 2008, Issue 04 https://doi.org/10.1088/1126-6708/2008/04/063	journal	April 2008
Event generation with SHERPA 1.1 Gleisberg, T.; Höche, S.; Krauss, F. Journal of High Energy Physics, Vol. 2009, Issue 02 https://doi.org/10.1088/1126-6708/2009/02/007	journal	February 2009
QCD radiation in the production of heavy colored particles at the LHC Alwall, Johan; Visscher, Simon de; Maltoni, Fabio Journal of High Energy Physics, Vol. 2009, Issue 02 https://doi.org/10.1088/1126-6708/2009/02/017	journal	February 2009
Electroweak corrections to W + jet hadroproduction including leptonic W-boson decays Denner, Ansgar; Dittmaier, Stefan; Kasprzik, Tobias Journal of High Energy Physics, Vol. 2009, Issue 08 https://doi.org/10.1088/1126-6708/2009/08/075	journal	August 2009
Vector Boson Production at Hadron Colliders: A Fully Exclusive QCD Calculation at Next-to-Next-to-Leading Order Catani, Stefano; Cieri, Leandro; Ferrera, Giancarlo Physical Review Letters, Vol. 103, Issue 8 https://doi.org/10.1103/PhysRevLett.103.082001	journal	August 2009
Precise Predictions for W + 4 -Jet Production at the Large Hadron Collider Berger, C. F.; Bern, Z.; Dixon, L. J. Physical Review Letters, Vol. 106, Issue 9 https://doi.org/10.1103/PhysRevLett.106.092001	journal	March 2011
Resummation for W and Z Production at Large p T Becher, Thomas; Lorentzen, Christian; Schwartz, Matthew D. Physical Review Letters, Vol. 108, Issue 1 https://doi.org/10.1103/PhysRevLett.108.012001	journal	January 2012
Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W → ℓ ν and Z → ℓ ℓ Cross Sections Aad, G.; Abbott, B.; Abdallah, J. Physical Review Letters, Vol. 109, Issue 1 https://doi.org/10.1103/PhysRevLett.109.012001	journal	July 2012
Charm Production in Association with an Electroweak Gauge Boson at the LHC Stirling, W. J.; Vryonidou, E. Physical Review Letters, Vol. 109, Issue 8 https://doi.org/10.1103/PhysRevLett.109.082002	journal	August 2012
Measurement of the Electron Charge Asymmetry in Inclusive W Production in p p Collisions at s = 7 TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 109, Issue 11 https://doi.org/10.1103/PhysRevLett.109.111806	journal	September 2012
Search for New Physics in the Multijet and Missing Transverse Momentum Final State in Proton-Proton Collisions at s = 7 TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 109, Issue 17 https://doi.org/10.1103/PhysRevLett.109.171803	journal	October 2012
Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions Alwall, J.; Höche, S.; Krauss, F. The European Physical Journal C, Vol. 53, Issue 3 https://doi.org/10.1140/epjc/s10052-007-0490-5	journal	December 2007
Parton distributions for the LHC Martin, A. D.; Stirling, W. J.; Thorne, R. S. The European Physical Journal C, Vol. 63, Issue 2 https://doi.org/10.1140/epjc/s10052-009-1072-5	journal	July 2009
Charge asymmetry in W + jets production at the LHC Kom, Chun-Hay; Stirling, W. James The European Physical Journal C, Vol. 69, Issue 1-2 https://doi.org/10.1140/epjc/s10052-010-1353-z	journal	June 2010
Charge asymmetry ratio as a probe of quark flavour couplings of resonant particles at the LHC Kom, Chun-Hay; Stirling, W. James The European Physical Journal C, Vol. 71, Issue 2 https://doi.org/10.1140/epjc/s10052-011-1546-0	journal	February 2011
Extended parameterisations for MSTW PDFs and their effect on lepton charge asymmetry from W decays Martin, A. D.; Mathijssen, A. J. Th. M.; Stirling, W. J. The European Physical Journal C, Vol. 73, Issue 2 https://doi.org/10.1140/epjc/s10052-013-2318-9	journal	February 2013
Precision Higgs coupling measurements at the LHC through ratios of production cross sections Djouadi, Abdelhak The European Physical Journal C, Vol. 73, Issue 7 https://doi.org/10.1140/epjc/s10052-013-2498-3	journal	July 2013
Progress in the Determination of the Partonic Structure of the Proton Forte, Stefano; Watt, Graeme Annual Review of Nuclear and Particle Science, Vol. 63, Issue 1 https://doi.org/10.1146/annurev-nucl-102212-170607	journal	October 2013

Cited By (18)

Parton distributions for the LHC run II Ball, Richard D.; Bertone, Valerio; Carrazza, Stefano Journal of High Energy Physics, Vol. 2015, Issue 4 https://doi.org/10.1007/jhep04(2015)040	journal	April 2015
Pinning down the large-x gluon with NNLO top-quark pair differential distributions Czakon, Michał; Hartland, Nathan P.; Mitov, Alexander Journal of High Energy Physics, Vol. 2017, Issue 4 https://doi.org/10.1007/jhep04(2017)044	journal	April 2017
Searches for third-generation squark production in fully hadronic final states in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Journal of High Energy Physics, Vol. 2015, Issue 6 https://doi.org/10.1007/jhep06(2015)116	journal	June 2015
The impact of the LHC Z-boson transverse momentum data on PDF determinations Boughezal, Radja; Guffanti, Alberto; Petriello, Frank Journal of High Energy Physics, Vol. 2017, Issue 7 https://doi.org/10.1007/jhep07(2017)130	journal	July 2017
QCD analysis of the CMS inclusive differential Z production data at s = 8 TeV Chatterjee, Rajdeep M.; Guchait, Monoranjan; Plačakytė, Ringailė Physical Review D, Vol. 94, Issue 3 https://doi.org/10.1103/physrevd.94.034035	journal	August 2016
Phenomenology of the Z boson plus jet process at NNLO Boughezal, Radja; Liu, Xiaohui; Petriello, Frank Physical Review D, Vol. 94, Issue 7 https://doi.org/10.1103/physrevd.94.074015	journal	October 2016
Can New Physics Hide inside the Proton? Carrazza, Stefano; Degrande, Celine; Iranipour, Shayan Physical Review Letters, Vol. 123, Issue 13 https://doi.org/10.1103/physrevlett.123.132001	journal	September 2019
QCD and strongly coupled gauge theories: challenges and perspectives Brambilla, N.; Eidelman, S.; Foka, P. The European Physical Journal C, Vol. 74, Issue 10 https://doi.org/10.1140/epjc/s10052-014-2981-5	journal	October 2014
HERAFitter: Open source QCD fit project Alekhin, S.; Behnke, O.; Belov, P. The European Physical Journal C, Vol. 75, Issue 7 https://doi.org/10.1140/epjc/s10052-015-3480-z	journal	July 2015
Precise predictions for $$V+$$ V + jets dark matter backgrounds Lindert, J. M.; Pozzorini, S.; Boughezal, R. The European Physical Journal C, Vol. 77, Issue 12 https://doi.org/10.1140/epjc/s10052-017-5389-1	journal	December 2017
The impact of the LHC Z-boson transverse momentum data on PDF determinations Boughezal, R.; Guffanti, A.; Petriello, F. Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.10368	text	January 2017
Pinning down the large-x gluon with NNLO top-quark pair differential distributions Czakon, Michal Wiktor; Hartland, Nathan P.; Mitov, Alexander RWTH Aachen University https://doi.org/10.18154/rwth-2017-04516	text	January 2017
HERAFitter : Open Source QCD Fit Project Alekhin, S.; Behnke, O.; Belov, P. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2015-03913	text	January 2015
Precise predictions for V plus jets dark matter backgrounds M., Lindert, Jonas; Stefan, Pozzorini,; Radja, Boughezal, ETH Zurich https://doi.org/10.3929/ethz-b-000221833	text	January 2017
Phenomenology of the Z-boson plus jet process at NNLO Boughezal, Radja; Liu, Xiaohui; Petriello, Frank arXiv https://doi.org/10.48550/arxiv.1602.08140	text	January 2016
Pinning down the large-x gluon with NNLO top-quark pair differential distributions Czakon, Michał; Hartland, Nathan P.; Mitov, Alexander arXiv https://doi.org/10.48550/arxiv.1611.08609	text	January 2016
Can New Physics hide inside the proton? Carrazza, Stefano; Degrande, Celine; Iranipour, Shayan arXiv https://doi.org/10.48550/arxiv.1905.05215	text	January 2019
QCD and Strongly Coupled Gauge Theories: Challenges and Perspectives Garcia Tormo, Xavier EDP Sciences https://doi.org/10.7892/boris.60803	text	January 2014

Similar Records

Impact of PDF uncertainties at large x on heavy boson production

Journal Article · Fri Jun 01 00:00:00 EDT 2012 · Journal of High Energy Physics · OSTI ID:1053013

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Phenomenology-HEP

Ratios of W and Z cross sections at large boson $$p_T$$ as a constraint on PDFs and background to new physics

Citation Formats

References (60)

Cited By (18)

Similar Records

Related Subjects