Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at √<i>s</i> = 13 TeV

Tumasyan, A; Adam, W; Andrejkovic, JW; Bergauer, T; Chatterjee, S; Damanakis, K; Dragicevic, M; Escalante Del Valle, A; Hussain, PS; Jeitler, M; Krammer, N; Hensel, C; Moraes, A; Rebello Teles, P; Aldá Júnior, WL; Alves Gallo Pereira, M; Reid, ID; Barroso Ferreira Filho, M; Brandao Malbouisson, H; Carvalho, W; Kyberd, P; Chinellato, J; Da Costa, EM; Khan, A; Da Silveira, GG; Cole, JE; Coldham, K; Lechner, L; Liko, D; Mikulec, I; Paulitsch, P; Pitters, FM; Schieck, J; Schöfbeck, R; Schwarz, D; Templ, S; Waltenberger, W; Wulz, CE; Darwish, MR; Janssen, T; Kello, T; Rejeb Sfar, H; Van Mechelen, P; Bols, ES; D'Hondt, J; De Moor, A; Delcourt, M; El Faham, H; Lowette, S; Moortgat, S; Morton, A; Müller, D; Sahasransu, AR; Tavernier, S; Van Doninck, W; Vannerom, D; Clerbaux, B; De Lentdecker, G; Favart, L; Hohov, D; Jaramillo, J; Lee, K; Mahdavikhorrami, M; Makarenko, I; Malara, A; Paredes, S; Pétré, L; Postiau, N; Starling, E; Thomas, L; Vanden Bemden, M; Vander Velde, C; Vanlaer, P; Dobur, D; Knolle, J; Lambrecht, L; Mestdach, G; Niedziela, M; Rendón, C; Roskas, C; Samalan, A; Skovpen, K; Tytgat, M; Van Den Bossche, N; Vermassen, B; Wezenbeek, L; Benecke, A; Bruno, G; Bury, F; Caputo, C; David, P; Delaere, C; Donertas, IS; Giammanco, A; Jaffel, K; Jain, S; Lemaitre, V; Mondal, K; Prisciandaro, J; Taliercio, A; Tran, TT; Vischia, P; Wertz, S; Alves, GA; Coelho, E

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/28869

Title:	Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at √<i>s</i> = 13 TeV
Other Titles:	Observation of same-sign WW production from double parton scattering in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Authors:	Tumasyan, A Adam, W Andrejkovic, JW Bergauer, T Chatterjee, S Damanakis, K Dragicevic, M Escalante Del Valle, A Hussain, PS Jeitler, M Krammer, N Hensel, C Moraes, A Rebello Teles, P Aldá Júnior, WL Alves Gallo Pereira, M Reid, ID Barroso Ferreira Filho, M Brandao Malbouisson, H Carvalho, W Kyberd, P Chinellato, J Da Costa, EM Khan, A Da Silveira, GG Cole, JE Coldham, K Lechner, L Liko, D Mikulec, I Paulitsch, P Pitters, FM Schieck, J Schöfbeck, R Schwarz, D Templ, S Waltenberger, W Wulz, CE Darwish, MR Janssen, T Kello, T Rejeb Sfar, H Van Mechelen, P Bols, ES D'Hondt, J De Moor, A Delcourt, M El Faham, H Lowette, S Moortgat, S Morton, A Müller, D Sahasransu, AR Tavernier, S Van Doninck, W Vannerom, D Clerbaux, B De Lentdecker, G Favart, L Hohov, D Jaramillo, J Lee, K Mahdavikhorrami, M Makarenko, I Malara, A Paredes, S Pétré, L Postiau, N Starling, E Thomas, L Vanden Bemden, M Vander Velde, C Vanlaer, P Dobur, D Knolle, J Lambrecht, L Mestdach, G Niedziela, M Rendón, C Roskas, C Samalan, A Skovpen, K Tytgat, M Van Den Bossche, N Vermassen, B Wezenbeek, L Benecke, A Bruno, G Bury, F Caputo, C David, P Delaere, C Donertas, IS Giammanco, A Jaffel, K Jain, S Lemaitre, V Mondal, K Prisciandaro, J Taliercio, A Tran, TT Vischia, P Wertz, S Alves, GA Coelho, E
Keywords:	Parton distribution functions;W & Z bosons;hadron colliders;particles and fields
Issue Date:	1-Sep-2023
Publisher:	American Physical Society
Citation:	Tumasyan, A. et al. for the benefit of the CMS Collaboration (2023) 'Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at √<i>s</i> = 13 TeV', Physical review letters, 2023, 131 (9), 091803, pp. 1 - 20. doi: 10.1103/PhysRevLett.131.091803.
Abstract:	The first observation of the production of W^{±}W^{±} bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138 fb^{-1} recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7±11.2(stat) _{-8.6}^{+9.5}(syst)±12.1(model) fb, whereas the measured fiducial cross section is 6.28±0.81(stat)±0.69(syst)±0.37(model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.
Description:	A preprint version of this article is available at arXiv:2206.02681v2 [hep-ex], . Comments: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures and tables, can be found at https://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-21-013 (CMS Public Pages). arXiv admin note: text overlap with arXiv:1909.06265v2 [hep-ex]
URI:	https://bura.brunel.ac.uk/handle/2438/28869
DOI:	https://doi.org/10.1103/PhysRevLett.131.091803
ISSN:	0031-9007
Other Identifiers:	ORCiD: A. Tumasyan https://orcid.org/0009-0000-0684-6742 ORCiD: Joanne E. Cole https://orcid.org/0000-0001-5638-7599 ORCiD: Akram Khan https://orcid.org/0000-0002-4597-4402 ORCiD: Paul Kyberd https://orcid.org/0000-0002-7353-7090 ORCiD: Ivan D. Reid https://orcid.org/0000-0002-9235-779X CMS-SMP-21-013 CERN-EP-2022-092 arXiv:2206.02681v2 [hep-ex] arXiv:1909.06265v2 [hep-ex] 091803
Appears in Collections:	Dept of Electronic and Electrical Engineering Research Papers

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