First Measurement of the $Λ_c^+ \to p η'$ decay

Belle Collaboration,; Li, S.X.; Cui, J.X.; Shen, C.P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D.M.; Atmacan, H.; Aushev, T.; Ayad, R.; Babu, V.; Behera, P.; Belous, K.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Bodrov, D.; Bonvicini, G.; Borah, J.; Bozek, A.; Bracko, M.; Branchini, P.; Browder, T.E.; Budano, A.; Campajola, M.; Cervenkov, D.; Chang, M.-C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B.G.; Chilikin, K.; Cho, H.E.; Cho, K.; Cho, S.-J.; Choi, S.-K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Das, S.; Dash, N.; De Nardo, G.; De Pietro, G.; Dhamija, R.; Di Capua, F.; Dolezal, Z.; Dong, T.V.; Epifanov, D.; Ferber, T.; Ferlewicz, D.; Fulsom, B.G.; Garg, R.; Gaur, V.; Gabyshev, N.; Giri, A.; Goldenzweig, P.; Golob, B.; Graziani, E.; Gu, T.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hou, W.-S.; Inami, K.; Ishikawa, A.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W.W.; Jang, E.-J.; Jia, S.; Jin, Y.; Joo, K.K.; Kahn, J.; Kaliyar, A.B.; Kang, K.H.; Kato, Y.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, C.H.; Kim, D.Y.; Kim, Y.-K.; Kinoshita, K.; Kodys, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Krizan, P.; Kroeger, R.; Krokovny, P.; Kumar, M.; Kumar, R.; Kumara, K.; Kwon, Y.-J.; Lam, T.; Laurenza, M.; Lee, S.C.; Li, J.; Li, L.K.; Li, Y.; Li Gioi, L.; Libby, J.; Liventsev, D.; Martini, A.; Masuda, M.; Matsuda, T.; Matvienko, D.; Maurya, S.K.; Meier, F.; Merola, M.; Miyabayashi, K.; Mizuk, R.; Mussa, R.; Nakao, M.; Narwal, D.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Nisar, N.K.; Nishida, S.; Nishimura, K.; Ogawa, K.; Ogawa, S.; Ono, H.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, S.-H.; Patra, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Podobnik, T.; Popov, V.; Prim, M.T.; Rohrken, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sandilya, S.; Sangal, A.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Schwartz, A.J.; Seino, Y.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Sharma, C.; Shebalin, V.; Shiu, J.-G.; Shwartz, B.; Simon, F.; Solovieva, E.; Stanic, S.; Staric, M.; Stottler, Z.S.; Sumihama, M.; Sumisawa, K.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Unno, Y.; Uno, K.; Uno, S.; Urquijo, P.; Vahsen, S.E.; Van Tonder, R.; Varner, G.; Vinokurova, A.; Waheed, E.; Wang, D.; Wang, E.; Wang, M.-Z.; Watanuki, S.; Won, E.; Xu, X.; Yabsley, B.D.; Yan, W.; Ye, H.; Yin, J.H.; Yusa, Y.; Zhai, Y.; Zhilich, V.; Zhukova, V.

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First Measurement of the $Λ_c^+ \to p η'$ decay

MPS-Authors

Belle Collaboration,
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Li, S.X.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cui, J.X.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Shen, C.P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Adachi, I.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Aihara, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Al Said, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Asner, D.M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Atmacan, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Aushev, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ayad, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Babu, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Behera, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Belous, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bessner, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bhardwaj, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bhuyan, B.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bilka, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bodrov, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bonvicini, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Borah, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bozek, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Bracko, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Branchini, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Browder, T.E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Budano, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Campajola, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cervenkov, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chang, M.-C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chang, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chekelian, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chen, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cheon, B.G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Chilikin, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cho, H.E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cho, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cho, S.-J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Choi, S.-K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Choi, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Choudhury, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cinabro, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Cunliffe, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Das, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Dash, N.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

De Nardo, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

De Pietro, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Dhamija, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Di Capua, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Dolezal, Z.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Dong, T.V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Epifanov, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ferber, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ferlewicz, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Fulsom, B.G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Garg, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Gaur, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Gabyshev, N.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Giri, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Goldenzweig, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Golob, B.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Graziani, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Gu, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hara, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hayasaka, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hayashii, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Hou, W.-S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Inami, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ishikawa, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Iwasaki, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Iwasaki, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Jacobs, W.W.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Jang, E.-J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Jia, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Jin, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Joo, K.K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kahn, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kaliyar, A.B.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kang, K.H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kato, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kawasaki, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kichimi, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kiesling, C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kim, C.H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kim, D.Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kim, Y.-K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kinoshita, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kodys, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Konno, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Korobov, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Korpar, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kovalenko, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Krizan, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kroeger, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Krokovny, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kumar, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kumar, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kumara, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kwon, Y.-J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Lam, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Laurenza, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Lee, S.C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Li, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Li, L.K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Li, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Li Gioi, L.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Libby, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Liventsev, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Martini, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Masuda, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Matsuda, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Matvienko, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Maurya, S.K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Meier, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Merola, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Miyabayashi, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Mizuk, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Mussa, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Nakao, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Narwal, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Natkaniec, Z.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Natochii, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Nayak, L.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Nisar, N.K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Nishida, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Nishimura, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ogawa, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ogawa, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ono, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Oskin, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pakhlov, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pakhlova, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pang, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pardi, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Park, S.-H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Patra, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pedlar, T.K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Pestotnik, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Piilonen, L.E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Podobnik, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Popov, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Prim, M.T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Rohrken, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Rostomyan, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Rout, N.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Russo, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sahoo, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sandilya, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sangal, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sanuki, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Savinov, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schnell, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schueler, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schwanda, C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Schwartz, A.J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Seino, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Senyo, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sevior, M.E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Shapkin, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sharma, C.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Shebalin, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Shiu, J.-G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Shwartz, B.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Simon, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Solovieva, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stanic, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Staric, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stottler, Z.S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sumihama, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sumisawa, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sumiyoshi, T.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Sutcliffe, W.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Takizawa, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Tamponi, U.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Tanida, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Tenchini, F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Trabelsi, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Uchida, M.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Unno, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Uno, K.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Uno, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Urquijo, P.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Vahsen, S.E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Van Tonder, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Varner, G.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Vinokurova, A.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Waheed, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Wang, D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Wang, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Wang, M.-Z.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Watanuki, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Won, E.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Xu, X.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Yabsley, B.D.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Yan, W.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Ye, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Yin, J.H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Yusa, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Zhai, Y.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Zhilich, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Zhukova, V.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

Belle Collaboration, Li, S., Cui, J., Shen, C., Adachi, I., Aihara, H., et al. (2022). First Measurement of the $Λ_c^+ \to p η'$ decay. Journal of High Energy Physics, 03, 090. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2022-50.

Cite as: https://hdl.handle.net/21.11116/0000-000C-B4E3-8

Abstract

We present the first measurement of the branching fraction of the singly Cabibbo-suppressed (SCS) decay $\Lambda_c^+ \to p \eta'$ with $\eta' \to \eta\pi^+\pi^-$, using a data sample corresponding to an integrated luminosity of 981 $\rm fb^{-1}$, collected by the Belle detector at the KEKB $e^{+}$$e^{-}$ asymmetric-energy collider. A significant $\Lambda_c^+$ signal is observed for the first time with a signal significance of 5.4$\sigma$. The relative branching fraction with respect to the normalization mode $\Lambda_c^+ \to pK^-\pi^+$ is measured to be \begin{equation*} \frac{{\cal B}(\Lambda_c^+ \to p \eta')}{{\cal B}(\Lambda_c^+ \to p K^-\pi^+)} = (7.54 \pm 1.32 \pm 0.75) \times 10^{-3}, \end{equation*} where the uncertainties are statistical and systematic, respectively. Using the world-average value of ${\cal B}(\Lambda_c^+ \to p K^-\pi^+) = (6.28\pm0.32)\times10^{-2}$, we obtain \begin{equation*} {\cal B}(\Lambda_c^+ \to p \eta') = (4.73 \pm 0.82 \pm 0.47 \pm 0.24)\times 10^{-4}, \end{equation*} where the uncertainties are statistical, systematic, and from ${\cal B}(\Lambda_c^+ \to pK^-\pi^+)$, respectively.