Measurement of Hadronic Mass Moments in B->Xclv Decays at Belle II

Sumitted to PubDB: 2020-09-11

Category: Conference papers and plots, Visibility: Public

Tags: -

Authors	Florian Bernlochner, Maximilian Welsch
Date	1993-09-01
Belle II Number	BELLE2-CONF-PH-2020-011
Abstract	We present measurements of the first six hadronic mass moments in semileptonic $B \to X_{c} ℓ ν$ decays. The hadronic mass moments, together with other observables of inclusive $B$ decays, can be used to determine the CKM matrix element $\abs V_{c b}$ and mass of the $b$ -quark $m_{b}$ in the context of Heavy Quark Expansions of QCD. The Belle~II data recorded at the $Υ (4 S)$ resonance in 2019 and 2020 (March-July), corresponding to an integrated luminosity of $Extra close brace or missing open brace$ \Upsilon (4S) \rightarrow B \overline{B} $i s r e c o n s t r u c t e d b y a p p l y i n g t h e h a d r o n i c t a g g i n g a l g o r i t h m p r o v i d e d b y t h e F u l l E v e n t I n t e r p r e t a t i o n t o f u l l y r e c o n s t r u c t o n e$ B $m e s o n . T h e s e c o n d$ B $m e s o n i s r e c o n s t r u c t e d i n c l u s i v e l y b y s e l e c t i n g a h i g h - m o m e n t u m l e p t o n . T h e$ X_c $s y s t e m i s i d e n t i f i e d b y t h e r e m a i n i n g r e c o n s t r u c t e d t r a c k s a n d c l u s t e r s i n t h e e l e c t r o m a g n e t i c c a l o r i m e t e r . W e r e p o r t p r e l i m i n a r y r e s u l t s f o r t h e h a d r o n i c m a s s m o m e n t s$ \langle M_X^n \rangle $w i t h$ n=1,\dots,6 $, m e a s u r e d a s a f u n c t i o n o f a l o w e r c u t o n t h e l e p t o n m o m e n t u m i n t h e s i g n a l$ B$ rest frame.

Files

BELLE2-CONF-PH-2020-011.pdf (versions: 2, 1)
latest upload: 2024-12-02