Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method
A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5 fb -1 collected by...
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| Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2015, Vol.75 (6), p.251-28, Article 251 |
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| creator | Ghete, V. M. Van Haevermaet, H. Seva, T. Wang, J. Strobbe, N. Pin, A. Fonseca De Souza, S. Sultanov, G. Mao, Y. Cabrera, A. Hamel de Monchenault, G. Chasserat, J. Viret, S. Bontenackels, M. Weber, H. Ata, M. Güth, A. Papacz, P. Lipka, K. Ribeiro Cipriano, P. M. Lapsien, T. Marconi, D. Böser, C. Hartmann, F. Strologas, J. Makovec, A. Raics, P. Swain, S. K. Mittal, M. Dutta, D. Cristella, L. Sharma, A. Di Guida, S. Donato, S. Grippo, M. T. Savoy-Navarro, A. Tonelli, G. Margaroli, F. Rovelli, C. Covarelli, R. Sacchi, R. Casarsa, M. Kropivnitskaya, A. Kim, T. J. Park, I. C. Salazar Ibarguen, H. A. Ahmad, M. Bargassa, P. Bunichev, V. Calderon, A. Graziano, A. Botta, C. Marini, A. C. Pandolfi, F. Lu, Y. J. Yu, S. S. Ozdemir, K. Tali, B. Surat, U. E. Yetkin, T. Clement, E. Bell, K. W. Brown, R. M. Shepherd-Themistocleous, C. H. Williams, T. Iles, G. Lyons, L. Nash, J. Nikitenko, A. Vazquez Acosta, M. Teodorescu, L. Dhingra, N. Laird, E. Mao, Z. Ignatenko, M. Kennedy, E. Long, O. R. Geffert, P. Vlimant, J. R. Wilkinson, R. Freeman, J. Vidal, R. Di Giovanni, G. P. Betts, R. R. Sekaric, J. Skhirtladze, N. Belloni, A. Kao, S. C. Turkewitz, J. Avdeeva, E. Hahn, K. A. Ruchti, R. Redjimi, R. de Barbaro, P. Korjenevski, S. Greene, S. Gurrola, A. Mao, Y. Lamichhane, P. Cepeda, M. |
| description | A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5
fb
-1
collected by the CMS experiment at the LHC in
p
p
collisions at a centre-of-mass energy of 8
TeV
. In order to separate the signal from the larger
t
t
¯
+ jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier,
μ
, relative to the standard model prediction for a Higgs boson mass of 125
GeV
. The observed (expected) exclusion limit at a 95 % confidence level is
μ
<
4.2
(3.3), corresponding to a best fit value
μ
^
=
1
.
2
-
1.5
+
1.6
. |
| doi_str_mv | 10.1140/epjc/s10052-015-3454-1 |
| format | Article |
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M. ; Van Haevermaet, H. ; Seva, T. ; Wang, J. ; Strobbe, N. ; Pin, A. ; Fonseca De Souza, S. ; Sultanov, G. ; Mao, Y. ; Cabrera, A. ; Hamel de Monchenault, G. ; Chasserat, J. ; Viret, S. ; Bontenackels, M. ; Weber, H. ; Ata, M. ; Güth, A. ; Papacz, P. ; Lipka, K. ; Ribeiro Cipriano, P. M. ; Lapsien, T. ; Marconi, D. ; Böser, C. ; Hartmann, F. ; Strologas, J. ; Makovec, A. ; Raics, P. ; Swain, S. K. ; Mittal, M. ; Dutta, D. ; Cristella, L. ; Sharma, A. ; Di Guida, S. ; Donato, S. ; Grippo, M. T. ; Savoy-Navarro, A. ; Tonelli, G. ; Margaroli, F. ; Rovelli, C. ; Covarelli, R. ; Sacchi, R. ; Casarsa, M. ; Kropivnitskaya, A. ; Kim, T. J. ; Park, I. C. ; Salazar Ibarguen, H. A. ; Ahmad, M. ; Bargassa, P. ; Bunichev, V. ; Calderon, A. ; Graziano, A. ; Botta, C. ; Marini, A. C. ; Pandolfi, F. ; Lu, Y. J. ; Yu, S. S. ; Ozdemir, K. ; Tali, B. ; Surat, U. E. ; Yetkin, T. ; Clement, E. ; Bell, K. W. ; Brown, R. M. ; Shepherd-Themistocleous, C. H. ; Williams, T. ; Iles, G. ; Lyons, L. ; Nash, J. ; Nikitenko, A. ; Vazquez Acosta, M. ; Teodorescu, L. ; Dhingra, N. ; Laird, E. ; Mao, Z. ; Ignatenko, M. ; Kennedy, E. ; Long, O. R. ; Geffert, P. ; Vlimant, J. R. ; Wilkinson, R. ; Freeman, J. ; Vidal, R. ; Di Giovanni, G. P. ; Betts, R. R. ; Sekaric, J. ; Skhirtladze, N. ; Belloni, A. ; Kao, S. C. ; Turkewitz, J. ; Avdeeva, E. ; Hahn, K. A. ; Ruchti, R. ; Redjimi, R. ; de Barbaro, P. ; Korjenevski, S. ; Greene, S. ; Gurrola, A. ; Mao, Y. ; Lamichhane, P. ; Cepeda, M.</creator><creatorcontrib>Ghete, V. M. ; Van Haevermaet, H. ; Seva, T. ; Wang, J. ; Strobbe, N. ; Pin, A. ; Fonseca De Souza, S. ; Sultanov, G. ; Mao, Y. ; Cabrera, A. ; Hamel de Monchenault, G. ; Chasserat, J. ; Viret, S. ; Bontenackels, M. ; Weber, H. ; Ata, M. ; Güth, A. ; Papacz, P. ; Lipka, K. ; Ribeiro Cipriano, P. M. ; Lapsien, T. ; Marconi, D. ; Böser, C. ; Hartmann, F. ; Strologas, J. ; Makovec, A. ; Raics, P. ; Swain, S. K. ; Mittal, M. ; Dutta, D. ; Cristella, L. ; Sharma, A. ; Di Guida, S. ; Donato, S. ; Grippo, M. T. ; Savoy-Navarro, A. ; Tonelli, G. ; Margaroli, F. ; Rovelli, C. ; Covarelli, R. ; Sacchi, R. ; Casarsa, M. ; Kropivnitskaya, A. ; Kim, T. J. ; Park, I. C. ; Salazar Ibarguen, H. A. ; Ahmad, M. ; Bargassa, P. ; Bunichev, V. ; Calderon, A. ; Graziano, A. ; Botta, C. ; Marini, A. C. ; Pandolfi, F. ; Lu, Y. J. ; Yu, S. S. ; Ozdemir, K. ; Tali, B. ; Surat, U. E. ; Yetkin, T. ; Clement, E. ; Bell, K. W. ; Brown, R. M. ; Shepherd-Themistocleous, C. H. ; Williams, T. ; Iles, G. ; Lyons, L. ; Nash, J. ; Nikitenko, A. ; Vazquez Acosta, M. ; Teodorescu, L. ; Dhingra, N. ; Laird, E. ; Mao, Z. ; Ignatenko, M. ; Kennedy, E. ; Long, O. R. ; Geffert, P. ; Vlimant, J. R. ; Wilkinson, R. ; Freeman, J. ; Vidal, R. ; Di Giovanni, G. P. ; Betts, R. R. ; Sekaric, J. ; Skhirtladze, N. ; Belloni, A. ; Kao, S. C. ; Turkewitz, J. ; Avdeeva, E. ; Hahn, K. A. ; Ruchti, R. ; Redjimi, R. ; de Barbaro, P. ; Korjenevski, S. ; Greene, S. ; Gurrola, A. ; Mao, Y. ; Lamichhane, P. ; Cepeda, M. ; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</creatorcontrib><description>A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5
fb
-1
collected by the CMS experiment at the LHC in
p
p
collisions at a centre-of-mass energy of 8
TeV
. In order to separate the signal from the larger
t
t
¯
+ jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier,
μ
, relative to the standard model prediction for a Higgs boson mass of 125
GeV
. The observed (expected) exclusion limit at a 95 % confidence level is
μ
<
4.2
(3.3), corresponding to a best fit value
μ
^
=
1
.
2
-
1.5
+
1.6
.</description><identifier>ISSN: 1434-6044</identifier><identifier>ISSN: 1434-6052</identifier><identifier>EISSN: 1434-6052</identifier><identifier>DOI: 10.1140/epjc/s10052-015-3454-1</identifier><identifier>PMID: 26097407</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Analysis ; Astronomy ; Astrophysics and Cosmology ; Collisions (Nuclear physics) ; Confidence intervals ; Decay ; Elementary Particles ; Hadrons ; Heavy Ions ; Higgs bosons ; High Energy Physics - Experiment ; Jets ; Mathematical models ; Measurement Science and Instrumentation ; Methods ; Nuclear Energy ; Nuclear Physics ; Physics ; Physics and Astronomy ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum Field Theories ; Quantum Field Theory ; Quarks ; Regular - Experimental Physics ; Regular Article - Experimental Physics ; Searching ; Specific gravity ; String Theory ; Texts</subject><ispartof>The European physical journal. 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R.</creatorcontrib><creatorcontrib>Geffert, P.</creatorcontrib><creatorcontrib>Vlimant, J. R.</creatorcontrib><creatorcontrib>Wilkinson, R.</creatorcontrib><creatorcontrib>Freeman, J.</creatorcontrib><creatorcontrib>Vidal, R.</creatorcontrib><creatorcontrib>Di Giovanni, G. P.</creatorcontrib><creatorcontrib>Betts, R. R.</creatorcontrib><creatorcontrib>Sekaric, J.</creatorcontrib><creatorcontrib>Skhirtladze, N.</creatorcontrib><creatorcontrib>Belloni, A.</creatorcontrib><creatorcontrib>Kao, S. C.</creatorcontrib><creatorcontrib>Turkewitz, J.</creatorcontrib><creatorcontrib>Avdeeva, E.</creatorcontrib><creatorcontrib>Hahn, K. A.</creatorcontrib><creatorcontrib>Ruchti, R.</creatorcontrib><creatorcontrib>Redjimi, R.</creatorcontrib><creatorcontrib>de Barbaro, P.</creatorcontrib><creatorcontrib>Korjenevski, S.</creatorcontrib><creatorcontrib>Greene, S.</creatorcontrib><creatorcontrib>Gurrola, A.</creatorcontrib><creatorcontrib>Mao, Y.</creatorcontrib><creatorcontrib>Lamichhane, P.</creatorcontrib><creatorcontrib>Cepeda, M.</creatorcontrib><creatorcontrib>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</creatorcontrib><title>Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method</title><title>The European physical journal. C, Particles and fields</title><addtitle>Eur. Phys. J. C</addtitle><addtitle>Eur Phys J C Part Fields</addtitle><description>A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5
fb
-1
collected by the CMS experiment at the LHC in
p
p
collisions at a centre-of-mass energy of 8
TeV
. In order to separate the signal from the larger
t
t
¯
+ jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier,
μ
, relative to the standard model prediction for a Higgs boson mass of 125
GeV
. The observed (expected) exclusion limit at a 95 % confidence level is
μ
<
4.2
(3.3), corresponding to a best fit value
μ
^
=
1
.
2
-
1.5
+
1.6
.</description><subject>Analysis</subject><subject>Astronomy</subject><subject>Astrophysics and Cosmology</subject><subject>Collisions (Nuclear physics)</subject><subject>Confidence intervals</subject><subject>Decay</subject><subject>Elementary Particles</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Higgs bosons</subject><subject>High Energy Physics - Experiment</subject><subject>Jets</subject><subject>Mathematical models</subject><subject>Measurement Science and Instrumentation</subject><subject>Methods</subject><subject>Nuclear Energy</subject><subject>Nuclear Physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Quarks</subject><subject>Regular - Experimental Physics</subject><subject>Regular Article - Experimental Physics</subject><subject>Searching</subject><subject>Specific gravity</subject><subject>String Theory</subject><subject>Texts</subject><issn>1434-6044</issn><issn>1434-6052</issn><issn>1434-6052</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNqNklFP1jAUhhejEUT_Amn0RmMGbdd1240JISokJCai103Xne0rbu1oO4Sf4T_2fA4JcGFML9ac85x355y-WbbP6AFjgh7CfGEOI6O05DllZV6IUuTsSbbLRCFyieGnd3chdrIXMV5QSrmg9fNsh0vaVIJWu9mvc9DBbEjvA9EkJu06HToy-Q5GcmKHIZLWR-_IHHy3GOiIdUTH6I3VyWL8p00brEx-zi8XHX6QWVuUch3pwOgb6wbMoUZKfiJ_iEiWuA1rMukU7DWBESZwiUyQNr57mT3r9Rjh1e13L_v-6eO345P87Mvn0-Ojs9zIpkx5BcLwvimYblrZNpxBKRtNZU-bnpqWtqItWgBZdaKsZStML6QomGxEbSpeF8Ve9mHVnZd2gs5gB0GPag520uFGeW3Vw4yzGzX4KyVQSDYVCrxeBXxMVkVjE5iN8c6BSYpxzngpEHq_QptH2idHZ8o6PheK4oPyWtRXDOm3tz0Ff7lATGqy0cA4agd-iYrVXEpWCdb8D1oKWTOxbfTNI_TCL8HhchWr0BNVVVCJ1MFKDXoEbK33OLXB08FkcSzoLcaPSsrx71JQLHj3oACZBNdp0EuM6vT860NWrqwJPsYA_d0uGFVbQ6utodVqaNxIqbaGVtuN7N9_pbuyvw5GoFqBiCk3QLg33L-lfwMvHAMb</recordid><startdate>2015</startdate><enddate>2015</enddate><creator>Ghete, V. 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K.</creator><creator>Mittal, M.</creator><creator>Dutta, D.</creator><creator>Cristella, L.</creator><creator>Sharma, A.</creator><creator>Di Guida, S.</creator><creator>Donato, S.</creator><creator>Grippo, M. T.</creator><creator>Savoy-Navarro, A.</creator><creator>Tonelli, G.</creator><creator>Margaroli, F.</creator><creator>Rovelli, C.</creator><creator>Covarelli, R.</creator><creator>Sacchi, R.</creator><creator>Casarsa, M.</creator><creator>Kropivnitskaya, A.</creator><creator>Kim, T. J.</creator><creator>Park, I. C.</creator><creator>Salazar Ibarguen, H. A.</creator><creator>Ahmad, M.</creator><creator>Bargassa, P.</creator><creator>Bunichev, V.</creator><creator>Calderon, A.</creator><creator>Graziano, A.</creator><creator>Botta, C.</creator><creator>Marini, A. C.</creator><creator>Pandolfi, F.</creator><creator>Lu, Y. J.</creator><creator>Yu, S. S.</creator><creator>Ozdemir, K.</creator><creator>Tali, B.</creator><creator>Surat, U. 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A.</creator><creator>Ruchti, R.</creator><creator>Redjimi, R.</creator><creator>de Barbaro, P.</creator><creator>Korjenevski, S.</creator><creator>Greene, S.</creator><creator>Gurrola, A.</creator><creator>Mao, Y.</creator><creator>Lamichhane, P.</creator><creator>Cepeda, M.</creator><general>Springer Berlin Heidelberg</general><general>Springer</general><general>Springer Nature B.V</general><general>Springer Verlag (Germany)</general><scope>C6C</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>7U5</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>1XC</scope><scope>OIOZB</scope><scope>OTOTI</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0003-0885-824X</orcidid><orcidid>https://orcid.org/0000-0001-7476-0158</orcidid><orcidid>https://orcid.org/0000-0001-6027-4511</orcidid><orcidid>https://orcid.org/0000-0002-2939-5646</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/0000-0001-9580-683X</orcidid><orcidid>https://orcid.org/0000-0002-1275-7292</orcidid><orcidid>https://orcid.org/0000-0003-3090-2948</orcidid><orcidid>https://orcid.org/0000-0002-1935-623X</orcidid></search><sort><creationdate>2015</creationdate><title>Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method</title><author>Ghete, V. M. ; Van Haevermaet, H. ; Seva, T. ; Wang, J. ; Strobbe, N. ; Pin, A. ; Fonseca De Souza, S. ; Sultanov, G. ; Mao, Y. ; Cabrera, A. ; Hamel de Monchenault, G. ; Chasserat, J. ; Viret, S. ; Bontenackels, M. ; Weber, H. ; Ata, M. ; Güth, A. ; Papacz, P. ; Lipka, K. ; Ribeiro Cipriano, P. M. ; Lapsien, T. ; Marconi, D. ; Böser, C. ; Hartmann, F. ; Strologas, J. ; Makovec, A. ; Raics, P. ; Swain, S. K. ; Mittal, M. ; Dutta, D. ; Cristella, L. ; Sharma, A. ; Di Guida, S. ; Donato, S. ; Grippo, M. T. ; Savoy-Navarro, A. ; Tonelli, G. ; Margaroli, F. ; Rovelli, C. ; Covarelli, R. ; Sacchi, R. ; Casarsa, M. ; Kropivnitskaya, A. ; Kim, T. J. ; Park, I. C. ; Salazar Ibarguen, H. A. ; Ahmad, M. ; Bargassa, P. ; Bunichev, V. ; Calderon, A. ; Graziano, A. ; Botta, C. ; Marini, A. C. ; Pandolfi, F. ; Lu, Y. J. ; Yu, S. S. ; Ozdemir, K. ; Tali, B. ; Surat, U. E. ; Yetkin, T. ; Clement, E. ; Bell, K. W. ; Brown, R. M. ; Shepherd-Themistocleous, C. H. ; Williams, T. ; Iles, G. ; Lyons, L. ; Nash, J. ; Nikitenko, A. ; Vazquez Acosta, M. ; Teodorescu, L. ; Dhingra, N. ; Laird, E. ; Mao, Z. ; Ignatenko, M. ; Kennedy, E. ; Long, O. R. ; Geffert, P. ; Vlimant, J. R. ; Wilkinson, R. ; Freeman, J. ; Vidal, R. ; Di Giovanni, G. P. ; Betts, R. R. ; Sekaric, J. ; Skhirtladze, N. ; Belloni, A. ; Kao, S. C. ; Turkewitz, J. ; Avdeeva, E. ; Hahn, K. A. ; Ruchti, R. ; Redjimi, R. ; de Barbaro, P. ; Korjenevski, S. ; Greene, S. ; Gurrola, A. ; Mao, Y. ; Lamichhane, P. ; Cepeda, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c695t-7e4c2f931a9b6b921e569a06f09f0cb0b4b3bee67d4586b4cf464316948c72833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Analysis</topic><topic>Astronomy</topic><topic>Astrophysics and Cosmology</topic><topic>Collisions (Nuclear physics)</topic><topic>Confidence intervals</topic><topic>Decay</topic><topic>Elementary Particles</topic><topic>Hadrons</topic><topic>Heavy Ions</topic><topic>Higgs bosons</topic><topic>High Energy Physics - Experiment</topic><topic>Jets</topic><topic>Mathematical models</topic><topic>Measurement Science and Instrumentation</topic><topic>Methods</topic><topic>Nuclear Energy</topic><topic>Nuclear Physics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>Quantum Field Theories</topic><topic>Quantum Field Theory</topic><topic>Quarks</topic><topic>Regular - Experimental Physics</topic><topic>Regular Article - Experimental Physics</topic><topic>Searching</topic><topic>Specific gravity</topic><topic>String Theory</topic><topic>Texts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ghete, V. 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(FNAL), Batavia, IL (United States)</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</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 & 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>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & 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>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The European physical journal. C, Particles and fields</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ghete, V. M.</au><au>Van Haevermaet, H.</au><au>Seva, T.</au><au>Wang, J.</au><au>Strobbe, N.</au><au>Pin, A.</au><au>Fonseca De Souza, S.</au><au>Sultanov, G.</au><au>Mao, Y.</au><au>Cabrera, A.</au><au>Hamel de Monchenault, G.</au><au>Chasserat, J.</au><au>Viret, S.</au><au>Bontenackels, M.</au><au>Weber, H.</au><au>Ata, M.</au><au>Güth, A.</au><au>Papacz, P.</au><au>Lipka, K.</au><au>Ribeiro Cipriano, P. M.</au><au>Lapsien, T.</au><au>Marconi, D.</au><au>Böser, C.</au><au>Hartmann, F.</au><au>Strologas, J.</au><au>Makovec, A.</au><au>Raics, P.</au><au>Swain, S. K.</au><au>Mittal, M.</au><au>Dutta, D.</au><au>Cristella, L.</au><au>Sharma, A.</au><au>Di Guida, S.</au><au>Donato, S.</au><au>Grippo, M. T.</au><au>Savoy-Navarro, A.</au><au>Tonelli, G.</au><au>Margaroli, F.</au><au>Rovelli, C.</au><au>Covarelli, R.</au><au>Sacchi, R.</au><au>Casarsa, M.</au><au>Kropivnitskaya, A.</au><au>Kim, T. J.</au><au>Park, I. C.</au><au>Salazar Ibarguen, H. A.</au><au>Ahmad, M.</au><au>Bargassa, P.</au><au>Bunichev, V.</au><au>Calderon, A.</au><au>Graziano, A.</au><au>Botta, C.</au><au>Marini, A. C.</au><au>Pandolfi, F.</au><au>Lu, Y. J.</au><au>Yu, S. S.</au><au>Ozdemir, K.</au><au>Tali, B.</au><au>Surat, U. E.</au><au>Yetkin, T.</au><au>Clement, E.</au><au>Bell, K. W.</au><au>Brown, R. M.</au><au>Shepherd-Themistocleous, C. H.</au><au>Williams, T.</au><au>Iles, G.</au><au>Lyons, L.</au><au>Nash, J.</au><au>Nikitenko, A.</au><au>Vazquez Acosta, M.</au><au>Teodorescu, L.</au><au>Dhingra, N.</au><au>Laird, E.</au><au>Mao, Z.</au><au>Ignatenko, M.</au><au>Kennedy, E.</au><au>Long, O. R.</au><au>Geffert, P.</au><au>Vlimant, J. R.</au><au>Wilkinson, R.</au><au>Freeman, J.</au><au>Vidal, R.</au><au>Di Giovanni, G. P.</au><au>Betts, R. R.</au><au>Sekaric, J.</au><au>Skhirtladze, N.</au><au>Belloni, A.</au><au>Kao, S. C.</au><au>Turkewitz, J.</au><au>Avdeeva, E.</au><au>Hahn, K. A.</au><au>Ruchti, R.</au><au>Redjimi, R.</au><au>de Barbaro, P.</au><au>Korjenevski, S.</au><au>Greene, S.</au><au>Gurrola, A.</au><au>Mao, Y.</au><au>Lamichhane, P.</au><au>Cepeda, M.</au><aucorp>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method</atitle><jtitle>The European physical journal. C, Particles and fields</jtitle><stitle>Eur. Phys. J. C</stitle><addtitle>Eur Phys J C Part Fields</addtitle><date>2015</date><risdate>2015</risdate><volume>75</volume><issue>6</issue><spage>251</spage><epage>28</epage><pages>251-28</pages><artnum>251</artnum><issn>1434-6044</issn><issn>1434-6052</issn><eissn>1434-6052</eissn><abstract>A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5
fb
-1
collected by the CMS experiment at the LHC in
p
p
collisions at a centre-of-mass energy of 8
TeV
. In order to separate the signal from the larger
t
t
¯
+ jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier,
μ
, relative to the standard model prediction for a Higgs boson mass of 125
GeV
. The observed (expected) exclusion limit at a 95 % confidence level is
μ
<
4.2
(3.3), corresponding to a best fit value
μ
^
=
1
.
2
-
1.5
+
1.6
.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>26097407</pmid><doi>10.1140/epjc/s10052-015-3454-1</doi><tpages>28</tpages><orcidid>https://orcid.org/0000-0003-0885-824X</orcidid><orcidid>https://orcid.org/0000-0001-7476-0158</orcidid><orcidid>https://orcid.org/0000-0001-6027-4511</orcidid><orcidid>https://orcid.org/0000-0002-2939-5646</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/0000-0001-9580-683X</orcidid><orcidid>https://orcid.org/0000-0002-1275-7292</orcidid><orcidid>https://orcid.org/0000-0003-3090-2948</orcidid><orcidid>https://orcid.org/0000-0002-1935-623X</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1434-6044 |
| ispartof | The European physical journal. C, Particles and fields, 2015, Vol.75 (6), p.251-28, Article 251 |
| issn | 1434-6044 1434-6052 1434-6052 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4464697 |
| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; SpringerLink Journals - AutoHoldings; Springer Nature OA Free Journals |
| subjects | Analysis Astronomy Astrophysics and Cosmology Collisions (Nuclear physics) Confidence intervals Decay Elementary Particles Hadrons Heavy Ions Higgs bosons High Energy Physics - Experiment Jets Mathematical models Measurement Science and Instrumentation Methods Nuclear Energy Nuclear Physics Physics Physics and Astronomy PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Quantum Field Theories Quantum Field Theory Quarks Regular - Experimental Physics Regular Article - Experimental Physics Searching Specific gravity String Theory Texts |
| title | Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method |
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