Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at s = 13 TeV
eScholarship, University of California, 2020
Online
unknown
Zugriff:
The first direct, model-independent measurement is presented of the modulus of the Cabibbo–Kobayashi–Maskawa (CKM) matrix elements |η|Vtb, |η|Vtd, and |η|Vts, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of |η|Vtb>0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values |η|Vtb=0.988±0.024, and |η|Vtd2+|η|Vts2=0.06±0.06, where the uncertainties include both statistical and systematic components, are measured.
Titel: |
Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at s = 13 TeV
|
---|---|
Autor/in / Beteiligte Person: | Sirunyan, AM ; Tumasyan, A ; Adam, W ; Ambrogi, F ; Bergauer, T ; Dragicevic, M ; Erö, J ; Del Valle, A Escalante ; Flechl, M ; Frühwirth, R ; Jeitler, M ; Krammer, N ; Krätschmer, I ; Liko, D ; Madlener, T ; Mikulec, I ; Rad, N ; Schieck, J ; Schöfbeck, R ; Spanring, M ; Waltenberger, W ; Wulz, C-E ; Zarucki, M ; Drugakov, V ; Mossolov, V ; Gonzalez, J Suarez ; Darwish, MR ; De Wolf, EA ; Di Croce, D ; Janssen, X ; Kello, T ; Lelek, A ; Pieters, M ; Sfar, H Rejeb ; Van Haevermaet, H ; Van Mechelen, P ; Van Putte, S ; Van Remortel, N ; Blekman, F ; Bols, ES ; Chhibra, SS ; D'Hondt, J ; De Clercq, J ; Lontkovskyi, D ; Lowette, S ; Marchesini, I ; Moortgat, S ; Python, Q ; Tavernier, S ; Van Doninck, W ; Van Mulders, P ; Beghin, D ; Bilin, B ; Clerbaux, B ; De Lentdecker, G ; Delannoy, H ; Dorney, B ; Favart, L ; Grebenyuk, A ; Kalsi, AK ; Moureaux, L ; Popov, A ; Postiau, N ; Starling, E ; Thomas, L ; Velde, C Vander ; Vanlaer, P ; Vannerom, D ; Cornelis, T ; Dobur, D ; Khvastunov, I ; Niedziela, M ; Roskas, C ; Skovpen, K ; Tytgat, M ; Verbeke, W ; Vermassen, B ; Vit, M ; Bruno, G ; Caputo, C ; David, P ; Delaere, C ; Delcourt, M ; Giammanco, A ; Lemaitre, V ; Prisciandaro, J ; Saggio, A ; Vischia, P ; Zobec, J ; Alves, GA ; Silva, G Correia ; Hensel, C ; Moraes, A ; Chagas, E Belchior Batista Das ; Carvalho, W ; Chinellato, J ; Coelho, E ; Da Costa, EM ; Da Silveira, GG ; De Jesus Damiao, D |
Link: | |
Veröffentlichung: | eScholarship, University of California, 2020 |
Medientyp: | unknown |
Schlagwort: |
|
Sonstiges: |
|