Details

Autor(en) / Beteiligte

• Andrejkovic, J. W.
• Templ, S.
• Lowette, S.
• Tavernier, S.
• Postiau, N.
• Shahzad, M. A.
• Zhang, L.
• Rodriguez, M.
• Mahmoud, M. A.
• Nielsen, C.
• Kim, M. S.
• Liu, G.
• Le Bihan, A.-C.
• Pauls, A.
• Redjeb, W.
• Bayatmakou, M.
• Eckerlin, G.
• Eckstein, D.
• Kleinwort, C.
• Benato, L.
• Garbers, C.
• Burkart, M.
• Neukum, M.
• Chatterjee, R. M.
• Majumder, G.
• Varghese, S.
• Khazaie, E.
• Chenarani, S.
• Ramos, D.
• Lo Meo, S.
• Rossi, A. M.
• Benaglia, A.
• Rossi, B.
• Montagna, P.
• Pastrone, N.
• Belforte, S.
• Choi, S.
• Kim, S.
• Ha, S.
• Choi, M.
• Juodagalvis, A.
• Bautista, I.
• Rekovic, V.
• Cerrada, M.
• Morcillo Perez, C. M.
• Folgueras, S.
• Ramón Álvarez, C.
• Matorras, F.
• Innocente, V.
• Piparo, D.
• Walter, D.
• Wanczyk, J.
• Zehetner, P.
• Lustermann, W.
• Wallny, R.
• Gurpinar Guler, E.
• Kara, O.
• Polatoz, A.
• Simsek, C.
• Flacher, H.
• Paramesvaran, S.
• Stylianou, N.
• Salvi, G.
• Shepherd-Themistocleous, C. H.
• Pesaresi, M.
• Kanuganti, A. R.
• Wilson, J.
• Cooper, S. I.
• Perez, C. U.
• Breedon, R.
• Cousins, R.
• Clare, R.
• Yagil, A.
• Masterson, P.
• Manganelli, N.
• Alexander, J.
• Berry, D.
• Feng, Y.
• Strait, J.
• Adams, T.
• Dittmer, S.
• Roguljic, M.
• Roy, D.
• Koeth, T.
• Hoang, D.
• Kapsiak, C.
• Hay, L.
• Morse, D. M.
• Dezoort, G.
• Carnahan, T.
• Padley, B. P.
• Popova, E.
• Thayil, S. A.
• Li, A.
• Savin, A.
• Afanasiev, S.
• Budkouski, D.
• Dimova, T.
• Uzunian, A.
• Zarubin, A.

Titel

Search for a third-generation leptoquark coupled to a τ lepton and a b quark through single, pair, and nonresonant production in proton-proton collisions at s = 13 TeV

Ist Teil von

• The journal of high energy physics, 2024-05, Vol.2024 (5), p.311

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• A bstract A search is presented for a third-generation leptoquark (LQ) coupled exclusively to a τ lepton and a b quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV recorded with the CMS detector, corresponding to an integrated luminosity of 138 fb − 1 . Events with τ leptons and a varying number of jets originating from b quarks are considered, targeting the single and pair production of LQs, as well as nonresonant t -channel LQ exchange. An excess is observed in the data with respect to the background expectation in the combined analysis of all search regions. For a benchmark LQ mass of 2 TeV and an LQ-b-τ coupling strength of 2.5, the excess reaches a local significance of up to 2.8 standard deviations. Upper limits at the 95% confidence level are placed on the LQ production cross section in the LQ mass range 0.5–2.3 TeV, and up to 3 TeV for t -channel LQ exchange. Leptoquarks are excluded below masses of 1.22–1.88 TeV for different LQ models and varying coupling strengths up to 2.5. The study of nonresonant ττ production through t -channel LQ exchange allows lower limits on the LQ mass of up to 2.3 TeV to be obtained.