M. Gu

works on

BESIII detector 1 branching fraction 1 double dalitz decay 1 eta meson decay 1 rare decay 1

From the 1 of 6 linked papers with an AI index.

collaborators

6 papers

hep-ex2026

Measurement of the double Dalitz decay $I^\cdot \to e^{+} e^{-} e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

The BESIII experiment measured the rare decay of the eta meson into two electron-positron pairs, determining its branching fraction to be about 2.6 × 10⁻⁵.

hep-ex2026

First Observation of \boldmath{ $D^{+} \to a_{0} (980) I ¨ $ and $D^{+} \to a_{0} (980)^{+} f_{0} (500)$ } in \boldmath{ $D^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ and $D^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$ } Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +756

We perform the first amplitude analysis of the singly Cabibbo-suppressed decays $D^{+} \to I ¨ ^{+} I ¨ ^{+ (0)} I ¨ ^{- (0)} I^\cdot$ , using $e^{+} e^{-}$ collision data collected with the BESIII detec…

hep-ex2026

Measurement of the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ via $I ¨ (3686) \to I^^{3} I ¨ _{c J}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +762

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector operating at BEPCII, the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ ( $J = 0, 1, 2$ ) a…

hep-ex2026

Improved measurement of the branching fraction of $D_{s}^{+} \to I^¼^{+} I^½_{I^} ¼$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

Using $e^{+} e^{-}$ collision data with an integrated luminosity of $7.33 fb^{- 1}$ collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector ope…

hep-ex2026

Search for a massless particle beyond the Standard Model in the $Ξ^{0} \to Λ + invisible$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +770

A search for a massless beyond-standard-model particle is performed in the decay $Ξ^{0} \to Λ + invisible$ using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected with…

hep-ex2025

Measurement of branching fractions of $I^_{c}^{+}$ decays to $I^£^{+} I^\cdot$ and $I^£^{+} I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

By analyzing $e^{+} e^{-}$ collision data taken at center-of-mass energies $s$ between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an in…

Measurement of the double Dalitz decay I^⋅→e+e−e+e−

First Observation of \boldmath{D+→a0​(980)I¨ and D+→a0​(980)+f0​(500)} in \boldmath{D+→I¨+I¨+I¨−I^⋅ and D+→I¨+I¨0I¨0I^⋅} Decays

Measurement of the branching fractions of I¨cJ​→I¨+I¨−I¨0I¨0 via I¨(3686)→I^3I¨cJ​

Improved measurement of the branching fraction of Ds+​→I^¼+I^½I^​¼

Search for a massless particle beyond the Standard Model in the Ξ0→Λ+invisible decay

Measurement of branching fractions of I^c+​ decays to I^£+I^⋅ and I^£+I^⋅′

Measurement of the double Dalitz decay $I^\cdot \to e^{+} e^{-} e^{+} e^{-}$

First Observation of \boldmath{ $D^{+} \to a_{0} (980) I ¨ $ and $D^{+} \to a_{0} (980)^{+} f_{0} (500)$ } in \boldmath{ $D^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-} I^\cdot$ and $D^{+} \to I ¨ ^{+} I ¨ ^{0} I ¨ ^{0} I^\cdot$ } Decays

Measurement of the branching fractions of $I ¨ _{c J} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ ^{0}$ via $I ¨ (3686) \to I^^{3} I ¨ _{c J}$

Improved measurement of the branching fraction of $D_{s}^{+} \to I^¼^{+} I^½_{I^} ¼$

Search for a massless particle beyond the Standard Model in the $Ξ^{0} \to Λ + invisible$ decay

Measurement of branching fractions of $I^_{c}^{+}$ decays to $I^£^{+} I^\cdot$ and $I^£^{+} I^\cdot^{'}$