Measurement of the inclusive and differential t t¯ γ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at √s = 13 TeV

Standard

Measurement of the inclusive and differential t t¯ γ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at √s = 13 TeV. / The CMS collaboration.

In: Journal of High Energy Physics, Vol. 2022, No. 5, 91, 05.2022.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f7a77ec8877547eeb14e5c4725902d44,

title = "Measurement of the inclusive and differential t t¯ γ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at √s = 13 TeV",

abstract = "The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e±μ∓, e+e−, or μ+μ−). The measurement is performed using 138 fb−1 of proton-proton collision data recorded by the CMS experiment at s = 13 TeV during the 2016–2018 data-taking period of the CERN LHC. A fiducial phase space is defined such that photons radiated by initial-state particles, top quarks, or any of their decay products are included. An inclusive cross section of 175.2 ± 2.5(stat) ± 6.3(syst) fb is measured in a signal region with at least one jet coming from the hadronization of a bottom quark and exactly one photon with transverse momentum above 20 GeV. Differential cross sections are measured as functions of several kinematic observables of the photon, leptons, and jets, and compared to standard model predictions. The measurements are also interpreted in the standard model effective field theory framework, and limits are found on the relevant Wilson coefficients from these results alone and in combination with a previous CMS measurement of the tt¯ γ production process using the lepton+jets final state.",

keywords = "Hadron-Hadron Scattering, Top Physics",

author = "{The CMS collaboration} and A. Tumasyan and W. Adam and Andrejkovic, {J. W.} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and {Escalante Del Valle}, A. and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and P. Paulitsch and Pitters, {F. M.} and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and S. Templ and W. Waltenberger and Wulz, {C. E.} and V. Chekhovsky and A. Litomin and V. Makarenko and Darwish, {M. R.} and {De Wolf}, {E. A.} and T. Janssen and T. Kello and A. Lelek and {Rejeb Sfar}, H. and {Van Mechelen}, P. and {Van Putte}, S. and {Van Remortel}, N. and Bols, {E. S.} and J. D{\textquoteright}Hondt and M. Delcourt and {El Faham}, H. and S. Lowette and S. Moortgat and A. Morton and D. M{\"u}ller and Sahasransu, {A. R.} and V. Blinov and T. Dimova and L. Kardapoltsev and A. Kozyrev and I. Ovtin and O. Radchenko and Y. Skovpen",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = may,

doi = "10.1007/JHEP05(2022)091",

language = "English",

volume = "2022",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "5",

}

RIS

TY - JOUR

T1 - Measurement of the inclusive and differential t t¯ γ cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at √s = 13 TeV

AU - The CMS collaboration

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Escalante Del Valle, A.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Mikulec, I.

AU - Paulitsch, P.

AU - Pitters, F. M.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Chekhovsky, V.

AU - Litomin, A.

AU - Makarenko, V.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Janssen, T.

AU - Kello, T.

AU - Lelek, A.

AU - Rejeb Sfar, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Moortgat, S.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Blinov, V.

AU - Dimova, T.

AU - Kardapoltsev, L.

AU - Kozyrev, A.

AU - Ovtin, I.

AU - Radchenko, O.

AU - Skovpen, Y.

PY - 2022/5

Y1 - 2022/5

N2 - The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e±μ∓, e+e−, or μ+μ−). The measurement is performed using 138 fb−1 of proton-proton collision data recorded by the CMS experiment at s = 13 TeV during the 2016–2018 data-taking period of the CERN LHC. A fiducial phase space is defined such that photons radiated by initial-state particles, top quarks, or any of their decay products are included. An inclusive cross section of 175.2 ± 2.5(stat) ± 6.3(syst) fb is measured in a signal region with at least one jet coming from the hadronization of a bottom quark and exactly one photon with transverse momentum above 20 GeV. Differential cross sections are measured as functions of several kinematic observables of the photon, leptons, and jets, and compared to standard model predictions. The measurements are also interpreted in the standard model effective field theory framework, and limits are found on the relevant Wilson coefficients from these results alone and in combination with a previous CMS measurement of the tt¯ γ production process using the lepton+jets final state.

AB - The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e±μ∓, e+e−, or μ+μ−). The measurement is performed using 138 fb−1 of proton-proton collision data recorded by the CMS experiment at s = 13 TeV during the 2016–2018 data-taking period of the CERN LHC. A fiducial phase space is defined such that photons radiated by initial-state particles, top quarks, or any of their decay products are included. An inclusive cross section of 175.2 ± 2.5(stat) ± 6.3(syst) fb is measured in a signal region with at least one jet coming from the hadronization of a bottom quark and exactly one photon with transverse momentum above 20 GeV. Differential cross sections are measured as functions of several kinematic observables of the photon, leptons, and jets, and compared to standard model predictions. The measurements are also interpreted in the standard model effective field theory framework, and limits are found on the relevant Wilson coefficients from these results alone and in combination with a previous CMS measurement of the tt¯ γ production process using the lepton+jets final state.

KW - Hadron-Hadron Scattering

KW - Top Physics

UR - http://www.scopus.com/inward/record.url?scp=85130229019&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2022)091

DO - 10.1007/JHEP05(2022)091

M3 - Article

AN - SCOPUS:85130229019

VL - 2022

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 5

M1 - 91

ER -

ID: 36544232