Observation of the decay Λc+→Σ−π+

Charmed baryon weak decays with decuplet baryon and SU(3) flavor symmetry

“…There have been many interesting progresses in the study of charmed baryon weak decays due to the recent measurement of the absolute branching fraction for the golden mode Λ + c → pK − π + by the Belle Collaboration [1] with the new world average of B(Λ + c → pK − π + ) = (6.23 ± 0.33)% [2] as well as other Λ c measurements by the BESIII Collaboration [3][4][5][6][7][8][9][10][11][12][13].…”

Overview of Λc decays

“…Some of this gap arises from unreported modes with η or η 0 . In addition, we propose that some of it be filled with semileptonic decays Λ c → Λ Ã l þ ν l , where Λ Ã is either an excited resonance such as Λð1405Þ or Λð1520Þ [5] (the number in parentheses denotes the mass in MeV) or a continuum I ¼ 0 state such as Σπ or NK.…”

“…Their results and the resulting Particle Data Group's (PDG) [8] "fit" value are summarized in Table I. BESIII [7] quotes updated absolute branching fractions for a dozen Λ c modes, incorporated into the latest PDG averages [5]. Also new is a set of updated branching fractions for Λ c → Σππ, including the first observation of the mode Λ c → Σ þ π 0 π 0 [9].…”

Charmed baryon weak decays with vector mesons

“…On the other hand, one can use the SU(3) F flavor symmetry to relate the amplitudes among different decays [7][8][9]. This becomes possible [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] as there have been recently many new experimental measurements for charmed baryon decays [3][4][5][6][28][29][30][31][32][33][34][35][36][37]. In addition to the analysis of charmed baryon decays with SU(3) F , the theoretical calculations based on dynamical models have also been done in the literature [38][39][40][41][42][43][44][45][46][47][48][49][50].…”