9 documents found, page 1 of 1
Search for Physics beyond the Standard Model in Events with Overlapping Photons...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.Made available in DSpace on 2022-04-30T21:19:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-11; Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collecte...
Search for long-lived particles using delayed photons in proton-proton collisio...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.Made available in DSpace on 2022-04-30T21:33:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-09; A search for long-lived particles decaying to photons and weakly interacting particles, using proton-proton collision data at s=13 TeV collected by the CMS experiment in 2016-2017 is presented. The data set corresponds to an integrated luminosity of 77.4 fb-1. Results are interpreted in the context of s...
Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft ...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.Made available in DSpace on 2022-04-30T22:43:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-29; The first search for supersymmetry in events with an experimental signature of one soft, hadronically decaying τ lepton, one energetic jet from initial-state radiation, and large transverse momentum imbalance is presented. These event signatures are consistent with direct or indirect production of scala...
Measurements of t t ¯ H Production and the CP Structure of the Yukawa Interacti...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Frühwirth, R.Made available in DSpace on 2022-04-30T23:49:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-08-07; The first observation of the tt¯H process in a single Higgs boson decay channel with the full reconstruction of the final state (H→γγ) is presented, with a significance of 6.6 standard deviations (σ). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pur...
Observation of the Production of Three Massive Gauge Bosons at s =13 TeV
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.Made available in DSpace on 2022-05-01T00:29:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-10-05; The first observation is reported of the combined production of three massive gauge bosons (VVV with V=W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CERN LHC corresponding to an integrated luminosity o...
Observation of the Bs0 →x (3872)φ Decay
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.Made available in DSpace on 2022-05-01T00:43:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-10-07; Using a data sample of proton-proton collisions at s=13 TeV, corresponding to an integrated luminosity of 140 fb-1 collected by the CMS experiment in 2016-2018, the Bs0→X(3872)φ decay is observed. Decays into J/ψ+π- and K+K- are used to reconstruct, respectively, the X(3872) and φ. The ratio of the prod...
Measurement of the associated production of a Z boson with charm or bottom quar...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.Made available in DSpace on 2022-05-01T00:57:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-08-01; Ratios of cross sections, σ(Z+c jets)/σ(Z+jets), σ(Z+b jets)/σ(Z+jets), and σ(Z+c jets)/σ(Z+b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in proton-proton collisions at s=13 TeV. The data sample, collected by the CMS experiment at the CERN LHC...
Search for resonant pair production of Higgs bosons in the bbZZ channel in prot...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.Made available in DSpace on 2022-05-01T01:11:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-08-01; A search for the production of a narrow-width resonance decaying into a pair of Higgs bosons decaying into the bbZZ channel is presented. The analysis is based on data collected with the CMS detector during 2016, in proton-proton collisions at the LHC, corresponding to an integrated luminosity of 35.9 f...
Evidence for Top Quark Production in Nucleus-Nucleus Collisions
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.Made available in DSpace on 2022-05-01T02:22:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-24; Ultrarelativistic heavy ion collisions recreate in the laboratory the thermodynamical conditions prevailing in the early universe up to 10-6 sec, thereby allowing the study of the quark-gluon plasma (QGP), a state of quantum chromodynamics (QCD) matter with deconfined partons. The top quark, the heavies...