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We present the first experimental search for the rare charm decay D-0 -> pi(0)nu(nu) over bar. It is based on an e(+)e(-) collision sample consisting of 10.6 x 10(6) pairs of D-0(D) over bar (0) mesons collected by the BESIII detector at root s = 3.773 GeV, corresponding to an integrated luminosity of 2.93 fb(-1). A data-driven method is used to ensure the reliability of the background modeling. No significant D-0 -> pi(0)nu(nu) over bar signal is observed in data and an upper limit of the branching fraction is set to be 2.1 x 10(-4) at the 90% confidence level. This is the first experimental constraint on charmed-hadron decays into dineutrino final states.

Search for the decay D-0 -> pi(0)nu(nu)over-bar

Amoroso, A;Bianchi, F;Bortone, A;Destefanis, M;De Mori, F;Fava, L;Greco, M;Hu, JF;Lavezzi, L;Maggiora, M;Marcello, S;Rivetti, A;Sosio, S;Spataro, S;Yan, L;
2022-01-01

Abstract

We present the first experimental search for the rare charm decay D-0 -> pi(0)nu(nu) over bar. It is based on an e(+)e(-) collision sample consisting of 10.6 x 10(6) pairs of D-0(D) over bar (0) mesons collected by the BESIII detector at root s = 3.773 GeV, corresponding to an integrated luminosity of 2.93 fb(-1). A data-driven method is used to ensure the reliability of the background modeling. No significant D-0 -> pi(0)nu(nu) over bar signal is observed in data and an upper limit of the branching fraction is set to be 2.1 x 10(-4) at the 90% confidence level. This is the first experimental constraint on charmed-hadron decays into dineutrino final states.
2022
PHYSICAL REVIEW D
105
7
L071102-1
L071102-8
Ablikim, M; Achasov, MN; Adlarson, P; Ahmed, S; Albrecht, M; Aliberti, R; Amoroso, A; An, MR; An, Q; Bai, XH; Bai, Y; Bakina, O; Ferroli, RB; Balossino, I; Ban, Y; Begzsuren, K; Berger, N; Bertani, M; Bettoni, D; Bianchi, F; Bloms, J; Bortone, A; Boyko, I; Briere, RA; Brueggemann, A; Cai, H; Cai, X; Calcaterra, A; Cao, GF; Cao, N; Cetin, SA; Chang, JF; Chang, WL; Chelkov, G; Chen, G; Chen, HS; Chen, ML; Chen, SJ; Chen, XR; Chen, YB; Chen, ZJ; Cheng, WS; Cibinetto, G; Cossio, F; Dai, HL; Dai, XC; Dbeyssi, A; de Boer, RE; Dedovich, D; Deng, ZY; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, J; Dong, LY; Dong, MY; Dong, X; Du, SX; Fan, YL; Fang, J; Fang, SS; Fang, Y; Farinelli, R; Fava, L; Feldbauer, F; Felici, G; Feng, CQ; Feng, JH; Fritsch, M; Fu, CD; Gao, YN; Gao, Y; Gao, Y; Garzia, I; Ge, PT; Geng, C; Gersabeck, EM; Gilman, A; Goetzen, K; Gong, L; Gong, WX; Gradl, W; Greco, M; Gu, LM; Gu, MH; Guan, CY; Guo, LB; Guo, RP; Guo, YP; Guskov, A; Han, TT; Han, WY; Hao, XQ; 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Qin, ZH; Qiu, JF; Qu, SQ; Qu, SQ; Rashid, KH; Ravindran, K; Redmer, CF; Rivetti, A; Rodin, V; Rolo, M; Rong, G; Rosner, C; Rump, M; Sang, HS; Sarantsev, A; Schelhaas, Y; Schnier, C; Schoenning, K; Scodeggio, M; Shan, DC; Shan, W; Shan, XY; Shangguan, JF; Shao, M; Shen, CP; Shen, HF; Shen, PX; Shen, XY; Shi, HC; Shi, RS; Shi, X; Shi, XD; Song, WM; Song, YX; Sosio, S; Spataro, S; Su, KX; Su, PP; Sun, GX; Sun, HK; Sun, JF; Sun, L; Sun, SS; Sun, T; Sun, WY; Sun, WY; Sun, X; Sun, YJ; Sun, YZ; Sun, ZT; Tan, YH; Tan, YX; Tang, CJ; Tang, GY; Tang, J; Teng, JX; Thoren, V; Tian, WH; Tian, Y; Uman, I; Wang, B; Wang, BL; Wang, CW; Wang, DY; Wang, HJ; Wang, HP; Wang, K; Wang, LL; Wang, M; Wang, MZ; Wang, M; Wang, S; Wang, W; Wang, WH; Wang, WP; Wang, X; Wang, XF; Wang, XL; Wang, Y; Wang, YD; Wang, YF; Wang, YQ; Wang, Y; Wang, Z; Wang, ZY; Wang, Z; Wang, ZY; Wei, DH; Weidner, F; Wen, SP; White, DJ; Wiedner, U; Wilkinson, G; Wolke, M; Wollenberg, L; Wu, JF; Wu, LH; Wu, LJ; Wu, X; Wu, Z; Xia, L; Xiang, T; 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Zhu, YC; Zhu, ZA; Zou, BS; Zou, JH
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