Search for Resonant and Nonresonant Higgs Boson Pair Production in the b b ¯ τ + τ − Decay Channel in p p Collisions at s = 13     TeV with the ATLAS Detector

Search for Resonant and Nonresonant Higgs Boson Pair Production in the b b ¯ τ + τ − Decay Channel in p p Collisions at s = 13     TeV with the ATLAS Detector

A search for resonant and nonresonant pair production of Higgs bosons in the b¯bτ+τ– final state is presented. The search uses 36.1 fb–1 of pp collision data with √s = 13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the τ-lepton pairs with at least one τ lepton decayin...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2018-11, Vol.121 (19)
Hauptverfasser: Adersberger, M., Anders, J. K., Andrei, V., Barbero, M., Beddall, A., Benjamin, D. P., Bensinger, J. R., Berlendis, S., Black, K. M., Blumenschein, U., Blunier, Dr, Bocchetta, S. S., Bogavac, D., Boisvert, V., Bolz, A. E., Bossio Sola, J. D., Braren, F., Bressler, S., Buchholz, P., Buttar, C. M., Calvetti, M., Camincher, C., Campana, S., Cano Bret, M., Cao, T., Chan, Y. L., Chegwidden, A., Chwastowski, J. J., Czodrowski, P., Diehl, E. B., Díez Cornell, S., Dolezal, Z., Duflot, L., Eigen, G., Falke, S., Farooque, T., Feickert, M., Ferrere, D., Gagliardi, G., Gramling, J., Grimm, K., Guan, W., Guzik, M. P., Hansen, J. D., Iconomidou-Fayard, L., Johnson, C. A., Kaczmarska, A., Kaplan, B., Kataoka, Y., Kawade, K., Khader, M., Kocian, M., Koenig, P. T., Koffeman, E., Kourkoumelis, C., Kuna, M., Kwan, T., Langenberg, R. J., Lu, Y. J., McClymont, L. I., Moa, T., Morgenstern, S., Neumann, M., Nurse, E., Oberlack, H., Obermann, T., Ochi, A., Oren, Y., Paolozzi, L., Parida, B., Parker, M. A., Pathak, A., Penc, O., Pernegger, H., Petrucci, F., Pitt, M., Ponomarenko, D., Rahal, G., Reichert, J., Richter, S., Rizvi, E., Rossini, L., Ryzhov, A., Sannino, M., Savic, N., Schernau, M., Smart, B. H., Solar, M., Sugaya, Y., Suster, C. J. E., Tahirovic, E., Tolley, E., Valderanis, C., Wilkens, H. G., Williams, S., Xella, S., Xu, H., Yamane, F., Zacharis, G., Zeitnitz, C.
Format: Artikel
Sprache:eng
Schlagworte:
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A search for resonant and nonresonant pair production of Higgs bosons in the b¯bτ+τ– final state is presented. The search uses 36.1 fb–1 of pp collision data with √s = 13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the τ-lepton pairs with at least one τ lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for nonresonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the standard model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances X in the mass range 305 GeV < mX < 402 GeV in the simplified hMSSM minimal supersymmetric model for tanβ=2 and excluding bulk Randall-Sundrum gravitons GKK in the mass range 325 GeV < mGKK < 885 GeV for k/¯MPl = 1.
ISSN:0031-9007
1079-7114