Observation of Z decays to four leptons with the CMS detector at the LHC

A bstract The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb −1 at TeV collected by the CMS detector at the Large Hadron Collider. A pronounced resonance peak, with a statist...

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Veröffentlicht in:The journal of high energy physics 2012-12, Vol.2012 (12), Article 34
Hauptverfasser: Suarez, R. Gonzalez, Dero, V., Klein, B., Tytgat, M., Pagano, D., Genchev, V., Iaydjiev, P., Chen, H. S., Jiang, C. H., Ptochos, F., Radi, A., Lassila-Perini, K., Lehti, S., Tuuva, T., Heracleous, N., Cherepanov, V., Steinbrück, G., Barth, C., Hauth, T., Simonis, H. J., Bhatnagar, V., Fiore, L., Iaselli, G., Dallavalle, G. M., Fanfani, A., Gonzi, S., Colafranceschi, S., De Guio, F., Malvezzi, S., De Cosa, A., Giassi, A., Park, C., Choi, Y. K., Villasenor-Cendejas, L. M., Shoaib, M., Korablev, A., Ryutin, R., Uzunian, A., Flix, J., Cifuentes, J. A. Brochero, Matorras, F., Rodrigo, T., Ruiz-Jimeno, A., Abbaneo, D., Funk, W., Karavakis, E., Mozer, M. U., Quertenmont, L., Antunes, J. Rodrigues, Schäfer, C., Spiga, D., Lecomte, P., Pandolfi, F., Pauss, F., Chao, Y., Gokbulut, G., Kangal, E. E., Aliev, T., Deniz, M., Kreczko, L., Brown, R. M., Cutajar, M., Hatherell, Z., Wakefield, S., Scarborough, T., Cox, P. T., Gardner, M., Pellett, D., Rutherford, B., West, C., Bornheim, A., Wagner, S. R., Tan, P., Drozdetskiy, A., Fu, Y., Snowball, M., Weinberg, M., Kalakhety, H., Evdokimov, O., Norbeck, E., Yetkin, T., Murray, M., Lu, Y., Bose, S., Kravchenko, I., Kumar, A., Schmitt, M., Vuosalo, C., Hegeman, J., Piroué, P., Koybasi, O., Boulahouache, C., Rose, K., Perloff, A., Kovitanggoon, K., Libeiro, T., Florez, C., Goodell, J., Hirosky, R., Loveless, R.
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container_end_page
container_issue 12
container_start_page
container_title The journal of high energy physics
container_volume 2012
creator Suarez, R. Gonzalez
Dero, V.
Klein, B.
Tytgat, M.
Pagano, D.
Genchev, V.
Iaydjiev, P.
Chen, H. S.
Jiang, C. H.
Ptochos, F.
Radi, A.
Lassila-Perini, K.
Lehti, S.
Tuuva, T.
Heracleous, N.
Cherepanov, V.
Steinbrück, G.
Barth, C.
Hauth, T.
Simonis, H. J.
Bhatnagar, V.
Fiore, L.
Iaselli, G.
Dallavalle, G. M.
Fanfani, A.
Gonzi, S.
Colafranceschi, S.
De Guio, F.
Malvezzi, S.
De Cosa, A.
Giassi, A.
Park, C.
Choi, Y. K.
Villasenor-Cendejas, L. M.
Shoaib, M.
Korablev, A.
Ryutin, R.
Uzunian, A.
Flix, J.
Cifuentes, J. A. Brochero
Matorras, F.
Rodrigo, T.
Ruiz-Jimeno, A.
Abbaneo, D.
Funk, W.
Karavakis, E.
Mozer, M. U.
Quertenmont, L.
Antunes, J. Rodrigues
Schäfer, C.
Spiga, D.
Lecomte, P.
Pandolfi, F.
Pauss, F.
Chao, Y.
Gokbulut, G.
Kangal, E. E.
Aliev, T.
Deniz, M.
Kreczko, L.
Brown, R. M.
Cutajar, M.
Hatherell, Z.
Wakefield, S.
Scarborough, T.
Cox, P. T.
Gardner, M.
Pellett, D.
Rutherford, B.
West, C.
Bornheim, A.
Wagner, S. R.
Tan, P.
Drozdetskiy, A.
Fu, Y.
Snowball, M.
Weinberg, M.
Kalakhety, H.
Evdokimov, O.
Norbeck, E.
Yetkin, T.
Murray, M.
Lu, Y.
Bose, S.
Kravchenko, I.
Kumar, A.
Schmitt, M.
Vuosalo, C.
Hegeman, J.
Piroué, P.
Koybasi, O.
Boulahouache, C.
Rose, K.
Perloff, A.
Kovitanggoon, K.
Libeiro, T.
Florez, C.
Goodell, J.
Hirosky, R.
Loveless, R.
description A bstract The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb −1 at TeV collected by the CMS detector at the Large Hadron Collider. A pronounced resonance peak, with a statistical significance of 9.7 σ , is observed in the distribution of the invariant mass of four leptons (electrons and/or muons) with mass and width consistent with expectations for Z boson decays. The branching fraction and cross section reported here are defined by phase space restrictions on the leptons, namely, 80 < m 4ℓ < 100 GeV, where m 4ℓ is the invariant mass of the four leptons, and m ℓℓ > 4 GeV for all pairs of leptons, where m ℓℓ is the two-lepton invariant mass. The measured branching fraction is and agrees with the standard model prediction of 4.45 × 10 −6 . The measured cross section times branching fraction is fb, also consistent with the standard model prediction of 120 fb. The four-lepton mass peak arising from Z → 4 ℓ decays provides a calibration channel for the Higgs boson search in the H → ZZ → 4 ℓ decay mode.
doi_str_mv 10.1007/JHEP12(2012)034
format Article
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K. ; Villasenor-Cendejas, L. M. ; Shoaib, M. ; Korablev, A. ; Ryutin, R. ; Uzunian, A. ; Flix, J. ; Cifuentes, J. A. Brochero ; Matorras, F. ; Rodrigo, T. ; Ruiz-Jimeno, A. ; Abbaneo, D. ; Funk, W. ; Karavakis, E. ; Mozer, M. U. ; Quertenmont, L. ; Antunes, J. Rodrigues ; Schäfer, C. ; Spiga, D. ; Lecomte, P. ; Pandolfi, F. ; Pauss, F. ; Chao, Y. ; Gokbulut, G. ; Kangal, E. E. ; Aliev, T. ; Deniz, M. ; Kreczko, L. ; Brown, R. M. ; Cutajar, M. ; Hatherell, Z. ; Wakefield, S. ; Scarborough, T. ; Cox, P. T. ; Gardner, M. ; Pellett, D. ; Rutherford, B. ; West, C. ; Bornheim, A. ; Wagner, S. R. ; Tan, P. ; Drozdetskiy, A. ; Fu, Y. ; Snowball, M. ; Weinberg, M. ; Kalakhety, H. ; Evdokimov, O. ; Norbeck, E. ; Yetkin, T. ; Murray, M. ; Lu, Y. ; Bose, S. ; Kravchenko, I. ; Kumar, A. ; Schmitt, M. ; Vuosalo, C. ; Hegeman, J. ; Piroué, P. ; Koybasi, O. ; Boulahouache, C. ; Rose, K. ; Perloff, A. ; Kovitanggoon, K. ; Libeiro, T. ; Florez, C. ; Goodell, J. ; Hirosky, R. ; Loveless, R. ; The CMS collaboration ; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States) ; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States) ; Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><description>A bstract The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb −1 at TeV collected by the CMS detector at the Large Hadron Collider. 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R.</creatorcontrib><creatorcontrib>Tan, P.</creatorcontrib><creatorcontrib>Drozdetskiy, A.</creatorcontrib><creatorcontrib>Fu, Y.</creatorcontrib><creatorcontrib>Snowball, M.</creatorcontrib><creatorcontrib>Weinberg, M.</creatorcontrib><creatorcontrib>Kalakhety, H.</creatorcontrib><creatorcontrib>Evdokimov, O.</creatorcontrib><creatorcontrib>Norbeck, E.</creatorcontrib><creatorcontrib>Yetkin, T.</creatorcontrib><creatorcontrib>Murray, M.</creatorcontrib><creatorcontrib>Lu, Y.</creatorcontrib><creatorcontrib>Bose, S.</creatorcontrib><creatorcontrib>Kravchenko, I.</creatorcontrib><creatorcontrib>Kumar, A.</creatorcontrib><creatorcontrib>Schmitt, M.</creatorcontrib><creatorcontrib>Vuosalo, C.</creatorcontrib><creatorcontrib>Hegeman, J.</creatorcontrib><creatorcontrib>Piroué, P.</creatorcontrib><creatorcontrib>Koybasi, O.</creatorcontrib><creatorcontrib>Boulahouache, C.</creatorcontrib><creatorcontrib>Rose, K.</creatorcontrib><creatorcontrib>Perloff, A.</creatorcontrib><creatorcontrib>Kovitanggoon, K.</creatorcontrib><creatorcontrib>Libeiro, T.</creatorcontrib><creatorcontrib>Florez, C.</creatorcontrib><creatorcontrib>Goodell, J.</creatorcontrib><creatorcontrib>Hirosky, R.</creatorcontrib><creatorcontrib>Loveless, R.</creatorcontrib><creatorcontrib>The CMS collaboration</creatorcontrib><creatorcontrib>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><title>Observation of Z decays to four leptons with the CMS detector at the LHC</title><title>The journal of high energy physics</title><addtitle>J. High Energ. Phys</addtitle><description>A bstract The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb −1 at TeV collected by the CMS detector at the Large Hadron Collider. A pronounced resonance peak, with a statistical significance of 9.7 σ , is observed in the distribution of the invariant mass of four leptons (electrons and/or muons) with mass and width consistent with expectations for Z boson decays. The branching fraction and cross section reported here are defined by phase space restrictions on the leptons, namely, 80 &lt; m 4ℓ &lt; 100 GeV, where m 4ℓ is the invariant mass of the four leptons, and m ℓℓ &gt; 4 GeV for all pairs of leptons, where m ℓℓ is the two-lepton invariant mass. The measured branching fraction is and agrees with the standard model prediction of 4.45 × 10 −6 . The measured cross section times branching fraction is fb, also consistent with the standard model prediction of 120 fb. The four-lepton mass peak arising from Z → 4 ℓ decays provides a calibration channel for the Higgs boson search in the H → ZZ → 4 ℓ decay mode.</description><subject>Classical and Quantum Gravitation</subject><subject>Cross-sections</subject><subject>Decay</subject><subject>Elementary Particles</subject><subject>Higgs bosons</subject><subject>High energy physics</subject><subject>High Energy Physics - Experiment</subject><subject>Invariants</subject><subject>Large Hadron Collider</subject><subject>Leptons</subject><subject>Luminosity</subject><subject>Muons</subject><subject>Particle collisions</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>Protons</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Quantum Physics</subject><subject>Quarks</subject><subject>Relativity Theory</subject><subject>Solenoids</subject><subject>String Theory</subject><issn>1029-8479</issn><issn>1126-6708</issn><issn>1029-8479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kc1LAzEQxRdRsFbPXoNeFKlOvnabY1mqq1QqqBcvIZvN2i11U5O00v_e1BX14mnC8HuPN3lJcozhEgNkV3fF-AGTMwKYnANlO0kPAxGDIcvE7p_3fnLg_RwAcyyglxTT0hu3VqGxLbI1ekGV0WrjUbCotiuHFmYZbOvRRxNmKMwMyu8fIxOMDtYhFb52kyI_TPZqtfDm6Hv2k-fr8VNeDCbTm9t8NBloxiEMqgrzMsMCa2BUDFOoBRMaTMVIVhpFFeW6rBnnphQsTUVtNK6ysi5LnjJNOe0nJ52v9aGRXjcxyUzbto2BJGaQcqARuuigmVrIpWvelNtIqxpZjCayacmSyvhljGBK1jjSpx29dPZ9ZXyQ83h5G6-QJGakLAbJInXVUdpZ752pf4wxyG0DsmtAbhuQsYGogE7hI9m-Gvfr-5_kE755hKQ</recordid><startdate>20121201</startdate><enddate>20121201</enddate><creator>Suarez, R. 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Gonzalez ; Dero, V. ; Klein, B. ; Tytgat, M. ; Pagano, D. ; Genchev, V. ; Iaydjiev, P. ; Chen, H. S. ; Jiang, C. H. ; Ptochos, F. ; Radi, A. ; Lassila-Perini, K. ; Lehti, S. ; Tuuva, T. ; Heracleous, N. ; Cherepanov, V. ; Steinbrück, G. ; Barth, C. ; Hauth, T. ; Simonis, H. J. ; Bhatnagar, V. ; Fiore, L. ; Iaselli, G. ; Dallavalle, G. M. ; Fanfani, A. ; Gonzi, S. ; Colafranceschi, S. ; De Guio, F. ; Malvezzi, S. ; De Cosa, A. ; Giassi, A. ; Park, C. ; Choi, Y. K. ; Villasenor-Cendejas, L. M. ; Shoaib, M. ; Korablev, A. ; Ryutin, R. ; Uzunian, A. ; Flix, J. ; Cifuentes, J. A. Brochero ; Matorras, F. ; Rodrigo, T. ; Ruiz-Jimeno, A. ; Abbaneo, D. ; Funk, W. ; Karavakis, E. ; Mozer, M. U. ; Quertenmont, L. ; Antunes, J. Rodrigues ; Schäfer, C. ; Spiga, D. ; Lecomte, P. ; Pandolfi, F. ; Pauss, F. ; Chao, Y. ; Gokbulut, G. ; Kangal, E. E. ; Aliev, T. ; Deniz, M. ; Kreczko, L. ; Brown, R. M. ; Cutajar, M. ; Hatherell, Z. ; Wakefield, S. ; Scarborough, T. ; Cox, P. T. ; Gardner, M. ; Pellett, D. ; Rutherford, B. ; West, C. ; Bornheim, A. ; Wagner, S. R. ; Tan, P. ; Drozdetskiy, A. ; Fu, Y. ; Snowball, M. ; Weinberg, M. ; Kalakhety, H. ; Evdokimov, O. ; Norbeck, E. ; Yetkin, T. ; Murray, M. ; Lu, Y. ; Bose, S. ; Kravchenko, I. ; Kumar, A. ; Schmitt, M. ; Vuosalo, C. ; Hegeman, J. ; Piroué, P. ; Koybasi, O. ; Boulahouache, C. ; Rose, K. ; Perloff, A. ; Kovitanggoon, K. ; Libeiro, T. ; Florez, C. ; Goodell, J. ; Hirosky, R. ; Loveless, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c450t-dd15b7191c0439860f949c0ed427bea3a35cbf455eb94669fec1d7bfbb564c353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Classical and Quantum Gravitation</topic><topic>Cross-sections</topic><topic>Decay</topic><topic>Elementary Particles</topic><topic>Higgs bosons</topic><topic>High energy physics</topic><topic>High Energy Physics - Experiment</topic><topic>Invariants</topic><topic>Large Hadron Collider</topic><topic>Leptons</topic><topic>Luminosity</topic><topic>Muons</topic><topic>Particle collisions</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>Protons</topic><topic>Quantum Field Theories</topic><topic>Quantum Field Theory</topic><topic>Quantum Physics</topic><topic>Quarks</topic><topic>Relativity Theory</topic><topic>Solenoids</topic><topic>String Theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Suarez, R. 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(FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies &amp; Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies &amp; Aerospace Database</collection><collection>ProQuest Advanced Technologies &amp; Aerospace Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>The journal of high energy physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Suarez, R. Gonzalez</au><au>Dero, V.</au><au>Klein, B.</au><au>Tytgat, M.</au><au>Pagano, D.</au><au>Genchev, V.</au><au>Iaydjiev, P.</au><au>Chen, H. S.</au><au>Jiang, C. H.</au><au>Ptochos, F.</au><au>Radi, A.</au><au>Lassila-Perini, K.</au><au>Lehti, S.</au><au>Tuuva, T.</au><au>Heracleous, N.</au><au>Cherepanov, V.</au><au>Steinbrück, G.</au><au>Barth, C.</au><au>Hauth, T.</au><au>Simonis, H. J.</au><au>Bhatnagar, V.</au><au>Fiore, L.</au><au>Iaselli, G.</au><au>Dallavalle, G. M.</au><au>Fanfani, A.</au><au>Gonzi, S.</au><au>Colafranceschi, S.</au><au>De Guio, F.</au><au>Malvezzi, S.</au><au>De Cosa, A.</au><au>Giassi, A.</au><au>Park, C.</au><au>Choi, Y. K.</au><au>Villasenor-Cendejas, L. M.</au><au>Shoaib, M.</au><au>Korablev, A.</au><au>Ryutin, R.</au><au>Uzunian, A.</au><au>Flix, J.</au><au>Cifuentes, J. A. Brochero</au><au>Matorras, F.</au><au>Rodrigo, T.</au><au>Ruiz-Jimeno, A.</au><au>Abbaneo, D.</au><au>Funk, W.</au><au>Karavakis, E.</au><au>Mozer, M. U.</au><au>Quertenmont, L.</au><au>Antunes, J. Rodrigues</au><au>Schäfer, C.</au><au>Spiga, D.</au><au>Lecomte, P.</au><au>Pandolfi, F.</au><au>Pauss, F.</au><au>Chao, Y.</au><au>Gokbulut, G.</au><au>Kangal, E. E.</au><au>Aliev, T.</au><au>Deniz, M.</au><au>Kreczko, L.</au><au>Brown, R. M.</au><au>Cutajar, M.</au><au>Hatherell, Z.</au><au>Wakefield, S.</au><au>Scarborough, T.</au><au>Cox, P. T.</au><au>Gardner, M.</au><au>Pellett, D.</au><au>Rutherford, B.</au><au>West, C.</au><au>Bornheim, A.</au><au>Wagner, S. R.</au><au>Tan, P.</au><au>Drozdetskiy, A.</au><au>Fu, Y.</au><au>Snowball, M.</au><au>Weinberg, M.</au><au>Kalakhety, H.</au><au>Evdokimov, O.</au><au>Norbeck, E.</au><au>Yetkin, T.</au><au>Murray, M.</au><au>Lu, Y.</au><au>Bose, S.</au><au>Kravchenko, I.</au><au>Kumar, A.</au><au>Schmitt, M.</au><au>Vuosalo, C.</au><au>Hegeman, J.</au><au>Piroué, P.</au><au>Koybasi, O.</au><au>Boulahouache, C.</au><au>Rose, K.</au><au>Perloff, A.</au><au>Kovitanggoon, K.</au><au>Libeiro, T.</au><au>Florez, C.</au><au>Goodell, J.</au><au>Hirosky, R.</au><au>Loveless, R.</au><aucorp>The CMS collaboration</aucorp><aucorp>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</aucorp><aucorp>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</aucorp><aucorp>Argonne National Lab. (ANL), Argonne, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of Z decays to four leptons with the CMS detector at the LHC</atitle><jtitle>The journal of high energy physics</jtitle><stitle>J. High Energ. Phys</stitle><date>2012-12-01</date><risdate>2012</risdate><volume>2012</volume><issue>12</issue><artnum>34</artnum><issn>1029-8479</issn><issn>1126-6708</issn><eissn>1029-8479</eissn><abstract>A bstract The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb −1 at TeV collected by the CMS detector at the Large Hadron Collider. A pronounced resonance peak, with a statistical significance of 9.7 σ , is observed in the distribution of the invariant mass of four leptons (electrons and/or muons) with mass and width consistent with expectations for Z boson decays. The branching fraction and cross section reported here are defined by phase space restrictions on the leptons, namely, 80 &lt; m 4ℓ &lt; 100 GeV, where m 4ℓ is the invariant mass of the four leptons, and m ℓℓ &gt; 4 GeV for all pairs of leptons, where m ℓℓ is the two-lepton invariant mass. The measured branching fraction is and agrees with the standard model prediction of 4.45 × 10 −6 . The measured cross section times branching fraction is fb, also consistent with the standard model prediction of 120 fb. The four-lepton mass peak arising from Z → 4 ℓ decays provides a calibration channel for the Higgs boson search in the H → ZZ → 4 ℓ decay mode.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/JHEP12(2012)034</doi><orcidid>https://orcid.org/0000-0003-0885-824X</orcidid><orcidid>https://orcid.org/0000-0001-7476-0158</orcidid><orcidid>https://orcid.org/0000-0002-5230-8387</orcidid><orcidid>https://orcid.org/0000-0003-3154-3123</orcidid><orcidid>https://orcid.org/0000-0002-5524-880X</orcidid><orcidid>https://orcid.org/0000-0001-6185-2045</orcidid><orcidid>https://orcid.org/0000-0003-1027-3400</orcidid><orcidid>https://orcid.org/0000-0001-9580-683X</orcidid><orcidid>https://orcid.org/0000-0002-2431-3381</orcidid><orcidid>https://orcid.org/0000-0002-1275-7292</orcidid><orcidid>https://orcid.org/0000-0003-3090-2948</orcidid><oa>free_for_read</oa></addata></record>
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subjects Classical and Quantum Gravitation
Cross-sections
Decay
Elementary Particles
Higgs bosons
High energy physics
High Energy Physics - Experiment
Invariants
Large Hadron Collider
Leptons
Luminosity
Muons
Particle collisions
Physics
Physics and Astronomy
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Protons
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Relativity Theory
Solenoids
String Theory
title Observation of Z decays to four leptons with the CMS detector at the LHC
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