Details

Autor(en) / Beteiligte

• Alexander, M.
• Basels, J. M.
• Berezhnoy, A.
• Bettler, M. O.
• Brossa Gonzalo, A.
• Butter, J. S.
• Calero Diaz, L.
• Calladine, R.
• Camboni, A.
• Charpentier, Ph
• Chekalina, V.
• Chernov, A.
• Chobanova, V.
• Chulikov, V.
• Cid Vidal, X.
• Cliff, H. V.
• Cogan, J.
• Dalseno, J.
• Dziewiecki, M.
• Eisenhardt, S.
• Fan, J.
• Fernandez Declara, P.
• Fleuret, F.
• Fontana, M.
• Franco Sevilla, M.
• Frei, C.
• Funk, W.
• Gallas Torreira, A.
• Galli, D.
• Garcia Martin, L. M.
• Garcia Rosales, F. A.
• Gaspar, C.
• Gerick, D.
• Giugliano, C.
• Golutvin, A.
• Gorbounov, P.
• Govorkova, E.
• Graciani Diaz, R.
• Graugés, E.
• Graziani, G.
• Hu, J.
• Hulsbergen, W.
• Jacobsson, R.
• Jurik, N.
• Kariuki, J. M.
• Kazeev, N.
• Kecke, M.
• Kenzie, M.
• Klimaszewski, K.
• Krawczyk, R. D.
• Kudryavtsev, V.
• Lanfranchi, G.
• Latham, T.
• Maciuc, F.
• Maddrell-Mander, S.
• Marangotto, D.
• Marshall, P. J.
• Mcconnell, L.
• Meaux, C.
• Mitzel, D. S.
• Mulder, M.
• Muzzetto, P.
• Nanut, T.
• Neri, N.
• Nguyen-Mau, C.
• Nunez, C.
• Pappenheimer, C.
• Pereima, D.
• Pisani, F.
• Plews, J.
• Plo Casasus, M.
• Polci, F.
• Rama, M.
• Raven, G.
• Redi, F.
• Ricciardi, S.
• Rodriguez Lopez, J. A.
• Satta, A.
• Schael, S.
• Schune, M. H.
• Schwemmer, R.
• Sergi, A.
• Serrano, J.
• Smeaton, J. G.
• Smith, E.
• Soares Lavra, L.
• Stevens, H.
• Strokov, S.
• Sun, J.
• Teubert, F.
• Tobin, M.
• Ukleja, A.
• Viana Barbosa, J. V.
• Vitali, G.
• Vom Bruch, D.
• Waldi, R.
• Wark, H. M.
• Wu, H.
• Yin, H.
• Zhang, D.

Titel

Measurement of the Λb0→ J/ψΛ angular distribution and the Λb0 polarisation in pp collisions

Ist Teil von

• The journal of high energy physics, 2020-06, Vol.2020 (6)

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2020

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• A bstract This paper presents an analysis of the Λ b 0 → J/ψ Λ angular distribution and the transverse production polarisation of Λ b 0 baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb − 1 , collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λ b 0 transverse momentum and pseudorapidity of 1 < p T < 20 GeV/ c and 2 < η < 5, respectively. The data are consistent with Λ b 0 baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ − decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration.