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Results of a search for the standard model Higgs boson produced in association with a top quark pair (H) in final states with electrons, muons, and hadronically decaying leptons are presented. The analyzed data set corresponds to an integrated luminosity of 35.9 fb recorded in proton-proton collisions at 13 TeV by the CMS experiment in 2016. The sensitivity of the search is improved by using matrix element and machine learning methods to separate the signal from backgrounds. The measured signal rate amounts to 1.23 times the production rate expected in the standard model, with an observed (expected) significance of 3.2 (2.8), which represents evidence for H production in those final states. An upper limit on the signal rate of 2.1 times the standard model production rate is set at 95% confidence level.
Qian Wang, Matthias Wolf, Yi Zhang, Konstantin Androsov, Alexis Kalogeropoulos, Jan Steggemann, Yi Wang, Michele Bianco, Jian Wang, Matthias Finger, Zheng Wang, Chao Wang, João Miguel das Neves Duarte, Tagir Aushev, Varun Sharma, Tian Cheng, Yixing Chen, Werner Lustermann, Ioannis Papadopoulos, Andrea Rizzi, Paolo Ronchese, Ekaterina Kuznetsova, Hua Zhang, Siyuan Wang, Jessica Prisciandaro, Peter Hansen, Ruchi Gupta, David Vannerom, Sebastiana Gianì, Kun Shi, Abhisek Datta, Arvind Shah, Wei Shi, Wei Sun, Jian Zhao, Rakesh Chawla, Thomas Berger, Federica Legger, Doohyun Kim, Bertrand François, Bandeep Singh, Ji Hyun Kim, Dipanwita Dutta, Donghyun Kim, Yiming Li, Sanjeev Kumar, Yong Yang, Ajay Kumar, Andromachi Tsirou, Georgios Anagnostou, Csaba Hajdu, Joao Varela, Muhammad Ahmad, Matthias Weber, Muhammad Shoaib, Milos Dordevic, Vineet Kumar, Abhishek Sharma, Vladimir Petrov, Francesco Fiori, Quentin Python, Meng Xiao, Sourav Sen, Viktor Khristenko, Fan Xia, Kai Yi, Muhammad Waqas, Seungkyu Ha, Maren Tabea Meinhard, Xiao Wang, Zhen Liu, Jing Li, Ali Harb, Hui Wang, Benjamin William Allen, Pratyush Das, Miao Hu, Anton Petrov, Chunhui Chen, Valérie Scheurer, Muhammad Ansar Iqbal
Qian Wang, Matthias Wolf, Yi Zhang, Konstantin Androsov, Alexis Kalogeropoulos, Jan Steggemann, Yi Wang, Michele Bianco, Jian Wang, Matthias Finger, Zheng Wang, Chao Wang, João Miguel das Neves Duarte, Tagir Aushev, Varun Sharma, Tian Cheng, Yixing Chen, Werner Lustermann, Ioannis Papadopoulos, Andrea Rizzi, Paolo Ronchese, Ekaterina Kuznetsova, Hua Zhang, Siyuan Wang, Jessica Prisciandaro, Peter Hansen, Ruchi Gupta, David Vannerom, Sebastiana Gianì, Kun Shi, Abhisek Datta, Arvind Shah, Wei Shi, Wei Sun, Jian Zhao, Rakesh Chawla, Thomas Berger, Federica Legger, Doohyun Kim, Bertrand François, Bandeep Singh, Ji Hyun Kim, Dipanwita Dutta, Donghyun Kim, Yiming Li, Sanjeev Kumar, Yong Yang, Ajay Kumar, Andromachi Tsirou, Georgios Anagnostou, Csaba Hajdu, Joao Varela, Muhammad Ahmad, Matthias Weber, Muhammad Shoaib, Milos Dordevic, Vineet Kumar, Abhishek Sharma, Vladimir Petrov, Francesco Fiori, Quentin Python, Meng Xiao, Sourav Sen, Viktor Khristenko, Fan Xia, Kai Yi, Muhammad Waqas, Seungkyu Ha, Maren Tabea Meinhard, Xiao Wang, Zhen Liu, Jing Li, Ali Harb, Hui Wang, Benjamin William Allen, Pratyush Das, Miao Hu, Anton Petrov, Chunhui Chen, Valérie Scheurer, Muhammad Ansar Iqbal
Qian Wang, Matthias Wolf, Yi Zhang, Konstantin Androsov, Alexis Kalogeropoulos, Jan Steggemann, Yi Wang, Michele Bianco, Jian Wang, Matthias Finger, Zheng Wang, Chao Wang, João Miguel das Neves Duarte, Tagir Aushev, Varun Sharma, Tian Cheng, Yixing Chen, Werner Lustermann, Ioannis Papadopoulos, Andrea Rizzi, Paolo Ronchese, Ekaterina Kuznetsova, Hua Zhang, Siyuan Wang, Jessica Prisciandaro, Peter Hansen, Ruchi Gupta, David Vannerom, Sebastiana Gianì, Kun Shi, Abhisek Datta, Arvind Shah, Wei Shi, Wei Sun, Jian Zhao, Rakesh Chawla, Thomas Berger, Federica Legger, Doohyun Kim, Bertrand François, Bandeep Singh, Ji Hyun Kim, Dipanwita Dutta, Donghyun Kim, Yiming Li, Sanjeev Kumar, Yong Yang, Ajay Kumar, Andromachi Tsirou, Georgios Anagnostou, Joao Varela, Csaba Hajdu, Muhammad Ahmad, Matthias Weber, Muhammad Shoaib, Milos Dordevic, Vineet Kumar, Abhishek Sharma, Vladimir Petrov, Francesco Fiori, Meng Xiao, Sourav Sen, Viktor Khristenko, Kai Yi, Muhammad Waqas, Seungkyu Ha, Maren Tabea Meinhard, Xiao Wang, Zhen Liu, Jing Li, Ali Harb, Hui Wang, Pratyush Das, Miao Hu, Anton Petrov, Chunhui Chen, Valérie Scheurer, Muhammad Ansar Iqbal