Performance studies of Belle II silicon vertex detector

Date Issued
01-01-2018
Author(s)
Lalwani, K.
Aihara, H.
Aziz, T.
Bacher, S.
Bahinipati, S.
Barberio, E.
Baroncelli, Ti
Baroncelli, To
Basith, A. K.
Batignani, G.
Bauer, A.
Behera, P. K.
Bertacchi, V.
Bettarini, S.
Bhuyan, B.
Bilka, T.
Bosi, F.
Bosisio, L.
Bozek, A.
Buchsteiner, F.
Caria, G.
Casarosa, G.
Ceccanti, M.
ÄŒervenkov, D.
Czank, T.
Dash, N.
de Nuccio, M.
Doležal, Z.
Forti, F.
Friedl, M.
Gobbo, B.
Grimaldo, J. A.M.
Hara, K.
Higuchi, T.
Irmler, C.
Ishikawa, A.
Jeon, H. B.
Joo, C.
Kaleta, M.
Kandra, J.
Kang, K. H.
Kodyš, P.
Kohriki, T.
Komarov, I.
Kumar, M.
Kumar, R.
KvasniÄ ka, P.
la Licata, C.
Lanceri, L.
Lee, J. Y.
Lee, S. C.
Li, Y.
Indian Institute of Technology, Madras
Lueck, T.
Mammini, P.
Martini, A.
Mayekar, S. N.
Mohanty, G. B.
Morii, T.
Nakamura, K. R.
Natkaniec, Z.
Onuki, Y.
Ostrowicz, W.
Paladino, A.
Paoloni, E.
Park, H.
Prasanth, K.
Profeti, A.
Rao, K. K.
Rashevskaya, I.
Resmi, P. K.
Rizzo, G.
Rozanska, M.
Sahoo, D.
Sasaki, J.
Sato, N.
Schultschik, S.
Schwanda, C.
Stypula, J.
Suzuki, J.
Tanaka, S.
Tanigawa, H.
Taylor, G. N.
Thalmeier, R.
Tsuboyama, T.
Urquijo, P.
Vitale, L.
Wan, K.
Watanabe, M.
Watanuki, S.
Watson, I. J.
Webb, J.
Wiechczynski, J.
Williams, S.
Yin, H.
Zani, L.
Abstract
The Belle II experiment at the SuperKEKB asymmetric-energy e+e− collider in KEK, Japan will operate at an instantaneous luminosity of 8×1035 cm−2s−1, which is about 40 times larger than that of its predecessor, Belle. It is built with the aim of collecting a huge amount of data corresponding to an integrated luminosity of about 50 ab−1 by 2025 for precise measurements of CP violation and searches for new physics, such as flavor-changing neutral currents, probing charged Higgs, new sources of CP violation, lepton-flavour violating decays, and searches for a dark photon. At this high luminosity, Belle II will face harsh backgrounds. To validate the performance of a key component of Belle II, the silicon vertex detector (SVD), in such a high rate and background environment, a detailed systematic performance study is essential using the offline reconstruction software. In this work, the performance of the Belle II SVD is validated using commissioning data for each double-sided silicon strip sensor. These studies help us to optimize the operation parameters of the SVD.
Volume
348