Interference fragmentation functions for large invariant mass

2012 ◽  
Author(s):  
Jian Zhou ◽  
Andreas Metz
Keyword(s):  
Invariant Mass ◽  
Fragmentation Functions

scholarly journals X0,1(2900) and (D−K+) invariant mass from QCD Laplace sum rules at NLO

2021 ◽  
Vol 1007 ◽  
pp. 122113
Author(s):  
R. Albuquerque ◽  
S. Narison ◽  
D. Rabetiarivony ◽  
G. Randriamanatrika
Keyword(s):  
Invariant Mass ◽  
Sum Rules

scholarly journals QED corrections in $$ \overline{B}\to \overline{K}{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ at the double-differential level

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Gino Isidori ◽  
Saad Nabeebaccus ◽  
Roman Zwicky
Keyword(s):  
Phase Space ◽  
Detailed Analysis ◽  
Invariant Mass ◽  
Mass Distribution ◽  
Invariant Mass Distribution ◽  
Semileptonic Decays ◽  
Lepton Pair ◽  
Specific Choice ◽  
Slicing Method

Abstract We present a detailed analysis of QED corrections to $$ \overline{B}\to \overline{K}{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ B ¯ → K ¯ ℓ + ℓ − decays at the double-differential level. Cancellations of soft and collinear divergences are demonstrated analytically using the phase space slicing method. Whereas soft divergences are found to cancel at the differential level, the cancellation of the hard-collinear logs ln mℓ require, besides photon-inclusiveness, a specific choice of kinematic variables. In particular, hard-collinear logs in the lepton-pair invariant mass distribution (q2), are sizeable and need to be treated with care when comparing with experiment. Virtual and real amplitudes are evaluated using an effective mesonic Lagrangian. Crucially, we show that going beyond this approximation does not introduce any further infrared sensitive terms. All analytic computations are performed for generic charges and are therefore adaptable to semileptonic decays such as $$ \overline{B}\to D\mathrm{\ell}\overline{\nu } $$ B ¯ → D ℓ ν ¯ .

scholarly journals Probing quark fragmentation functions for baryon production in unpolarized e+e− annihilation

1995 ◽  
Vol 445 (2-3) ◽  
pp. 380-396 ◽  
Author(s):  
Kun Chen ◽  
Gary R. Goldstein ◽  
R.L. Jaffe ◽  
Xiangdong Ji
Keyword(s):  
Baryon Production ◽  
Quark Fragmentation ◽  
Fragmentation Functions

scholarly journals Invariant-mass distribution of top-quark pairs and top-quark mass determination

2020 ◽  
Vol 44 (9) ◽  
pp. 091001
Author(s):  
Wan-Li Ju ◽  
Guoxing Wang ◽  
Xing Wang ◽  
Xiaofeng Xu ◽  
Yongqi Xu ◽  
...  
Keyword(s):  
Invariant Mass ◽  
Mass Distribution ◽  
Top Quark ◽  
Quark Mass ◽  
Invariant Mass Distribution ◽  
Mass Determination ◽  
Top Quark Mass ◽  
Quark Pairs ◽  
Top Quark Pairs

One-particle fragmentation functions in the massless Schwinger model

1994 ◽  
Vol 326 (1-2) ◽  
pp. 154-160 ◽  
Author(s):  
Jun Liu ◽  
Cheuk-Yin Wong ◽  
Chia C. Shih ◽  
Ren Chuan Wang
Keyword(s):  
Schwinger Model ◽  
Particle Fragmentation ◽  
Fragmentation Functions
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