{'fraction_non_alphanumeric': 0.012048192771084338, 'fraction_numerical': 0.014056224899598393, 'mean_word_length': 4.763005780346821, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Identification of b quark jets at the CMS Experiment in the LHC Run 2

Many physics studies involving standard model processes as well as searches for physics beyond the standard model rely on the accurate identification of jets originating from bottom quarks. The b jet identification algorithms and their performance are presented using proton-proton collision data recorded by the CMS detector at a center of mass energy of √ s = 13 TeV during the start of the LHC Run 2 in 2015. The efficiency to identify b quark jets and the probability to misidentify jets originating from non-b quark jets is measured as a function of the jet transverse momentum by selecting events with multiple jets, a Z boson or top quarks. Studies related to the b jet identification efficiency for wide jets with substructure are also presented, relevant for physics analyses targeting b quark jet identification in boosted topologies. This document has been revised with respect to the version dated March 23, 2016.