Erratum: First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV / c2 with GERDA (Physical Review Letters (2020) 125 (011801) DOI: 10.1103/PhysRevLett.125.011801)

Agostini, M.; Bakalyarov, A. M.; Balata, M.; Barabanov, I.; Baudis, L.; Bauer, C.; Bellotti, E.; Belogurov, S.; Bettini, A.; Bezrukov, L.; Borowicz, D.; Bossio, E.; Bothe, V.; Brudanin, V.; Brugnera, R.; Caldwell, A.; Cattadori, C.; Chernogorov, A.; Comellato, T.; D'Andrea, V.; Demidova, E. V.; Di Marco, N.; Doroshkevich, E.; Egorov, V.; Fischer, F.; Fomina, M.; Gangapshev, A.; Garfagnini, A.; Gooch, C.; Grabmayr, P.; Gurentsov, V.; Gusev, K.; Hakenmuller, J.; Hemmer, S.; Hiller, R.; Hofmann, W.; Hult, M.; Inzhechik, L. V.; Janicsko Csathy, J.; Jochum, J.; Junker, M.; Kazalov, V.; Kermaidic, Y.; Khushbakht, H.; Kihm, T.; Kirpichnikov, I. V.; Klimenko, A.; Kneissl, R.; Knopfle, K. T.; Kochetov, O.; Kornoukhov, V. N.; Krause, P.; Kuzminov, V. V.; Laubenstein, M.; Lazzaro, A.; Lindner, M.; Lippi, I.; Lubashevskiy, A.; Lubsandorzhiev, B.; Lutter, G.; Macolino, C.; Majorovits, B.; Maneschg, W.; Miloradovic, M.; Mingazheva, R.; Misiaszek, M.; Moseev, P.; Nemchenok, I.; Panas, K.; Pandola, L.; Pelczar, K.; Pertoldi, L.; Piseri, P.; Pullia, A.; Ransom, C.; Rauscher, L.; Riboldi, S.; Rumyantseva, N.; Sada, C.; Salamida, F.; Schonert, S.; Schreiner, J.; Schutt, M.; Schutz, A. -K.; Schulz, O.; Schwarz, M.; Schwingenheuer, B.; Selivanenko, O.; Shevchik, E.; Shirchenko, M.; Simgen, H.; Smolnikov, A.; Stukov, D.; Vasenko, A. A.; Veresnikova, A.; Vignoli, C.; Von Sturm, K.; Wester, T.; Wiesinger, C.; Wojcik, M.; Yanovich, E.; Zatschler, B.; Zhitnikov, I.; Zhukov, S. V.; Zinatulina, D.; Zschocke, A.; Zsigmond, A. J.; Zuber, K.; Zuzel, G.

doi:10.1103/PhysRevLett.129.089901

Because of an incorrect evaluation of Eqs. (1) and (2), the upper limits on the coupling strengths gae and a'/a of pseudoscalar and vector bosonic superweakly interacting massive particles (super-WIMPs) deduced from the GERDA data (blue curves in Fig. 3) are incorrect. The corrected constraints are shown in the new Fig. 3 below. Depending on the particle mass, the correction has worsened the limits for gae by a factor between 1.8 and 1.9, and for a'/a by a factor between 3.3 and 3.6. As to the coupling strengths quoted on page 011801-5 for the mass of 150 keV / c 2 , the limit at 90% credible interval (C.I.) increases for gae from gae (Formula Presented).