Results 51 to 60 of about 356,508 (282)

The $$\varvec{\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-}$$ Λ b → Λ ( → p π - ) μ + μ - decay in the aligned two-Higgs-doublet model

European Physical Journal C: Particles and Fields, 2017
The rare baryonic decay $$\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-$$ Λ b → Λ ( → p π - ) μ + μ - provides valuable complementary information compared to the corresponding mesonic $$b\rightarrow s\mu ^+\mu ^-$$ b → s μ + μ ...
Quan-Yi Hu, Xin-Qiang Li, Ya-Dong Yang
doaj   +1 more source

Freeze-in Dirac neutrinogenesis: thermal leptonic CP asymmetry

European Physical Journal C: Particles and Fields, 2020
We present a freeze-in realization of the Dirac neutrinogenesis in which the decaying particle that generates the lepton-number asymmetry is in thermal equilibrium.
Shao-Ping Li, Xin-Qiang Li, Xin-Shuai Yan, Ya-Dong Yang   +3 more
doaj   +1 more source

Jet tomography in high-energy nuclear collisions [PDF]

EPJ Web of Conferences, 2019
When an energetic parton traversing the QCD medium, it may suffer multiple scatterings and lose energy. This jet quenching phenomenon may lead to the suppression of leading hadron productions as well as medium modifications of full jet observables in ...
Zhang Ben-Wei, Ma Guo-Yang, Dai Wei, Wang Sa, Zhang Shan-Liang   +4 more
doaj   +1 more source

Dedication to Nathan Isgur [PDF]

, 2002
Nathan passed away in July after a lengthy illness. I am sure most of you are familiar with his many contributions to heavy quark physics and it is certainly fitting that we take a few minutes to honor him at the beginning of this meeting.
Wise, Mark B.
core   +1 more source

Off-forward quark-quark correlation function [PDF]

Physical Review D, 2006
The properties of the non-forward quark-quark correlation function are examined. We derive constraints on the correlation function from the transformation properties of the fundamental fields of QCD occurring in its definition. We further develop a method to construct an ansatz for this correlator.
openaire   +2 more sources

Bottom-quark fragmentation in top-quark decay [PDF]

Nuclear Physics B, 2002
We study the fragmentation of the b quark in top decay in NLO QCD, within the framework of perturbative fragmentation, which allows one to resum large logarithms $\sim\log (m_t^2/m_b^2)$. We show the b-energy distribution, which we compare with the exact ${\cal O} ( _S)$ result for a massive b quark.
Corcella, Gennaro, Mitov, Alexander D.
openaire   +2 more sources

Plate tectonics in the microscopy realm: Molecular insights into morphological variability of Peridinium willei (Peridiniales, Dinophyceae)

TAXON, EarlyView.
Abstract Freshwater Peridinium willei (Peridiniaceae) is globally distributed, but reports linking its morphologies with DNA sequence data remain scarce. The taxonomy of the species, and its infraspecific taxa, remain ambiguous due to the lack of DNA sequence data for the original and type material.
Arwin Ahmadpur, Dana C. Eisenhöld, Eva Facher, Marc Gottschling, Selin Gürkan, Borislava P. Hristova, Johanna Knechtel, Paula M.E. Lehner, Hemingway Nyoka, Paweł M. Owsianny, Chiara Peters, Hélène Reich, Eva Reicheneder, Alexander Rockinger, Cecilia Teodora Satta, Marina Stark, F. Sara Uslu, Anže Žerdoner Čalasan   +17 more
wiley   +1 more source

B c − → J / ψ → μ + μ − τ − → π − ν τ ρ − ν τ ℓ − ν ¯ ℓ ν τ ν ¯ τ $$ {B}_c^{-}\to J/\psi \left(\to {\mu}^{+}{\mu}^{-}\right){\tau}^{-}\left(\to {\pi}^{-}{\nu}_{\tau },{\rho}^{-}{\nu}_{\tau },{\ell}^{-}{\overline{\nu}}_{\ell }{\nu}_{\tau}\right){\overline{\nu}}_{\tau } $$ decays with visible final-state kinematics

Journal of High Energy Physics, 2023
The semitauonic B c − → J / ψ τ − ν ¯ τ $$ {B}_c^{-}\to J/\psi {\tau}^{-}{\overline{\nu}}_{\tau } $$ decay provides an ideal and clean mode to scrutinize possible new physics effects in b → c τ − ν ¯ τ $$ b\to c{\tau}^{-}{\overline{\nu}}_{\tau ...
Xin-Qiang Li, Xin Xu, Ya-Dong Yang, Dong-Hui Zheng   +3 more
doaj   +1 more source

Non-perturbative structure of the polarized nucleon sea

, 2003
We investigate the flavour and quark-antiquark structure of the polarized nucleon by calculating the parton distribution functions of the nucleon sea using the meson cloud model. We find that the SU(2) flavor symmetry in the light antiquark sea and quark-
A. I. Signal, A.I. Signal, A.I. Signal, A.W. Schreiber, A.W. Schreiber, A.W. Thomas, A.W. Thomas, B. Adeva, B. Adeva, B. Adeva, B. Adeva, B. Dressler, B. Holzenkamp, C. Boros, D.I. Diakonov, D.I. Diakonov, E.A. Hawker, F.G. Cao, F.G. Cao, F.G. Cao, Fu-Guang Cao, G.T. Garvey, H. Holtmann, J. Ashman, J. Ashman, J. Blumlein, J. Ellis, J. Ellis, K. Abe, K. Ackerstaff, M. Arneodo, M. Arneodo, M. Fukugita, M. Gluck, M. Glück, M. Hirai, P. Amaudraz, P.L. Anthony, P.V. Pobylitsa, R. Machleidt, R.S. Towell, S. Kumano, S.J. Dong, T. DeGrand, W. Melnitchouk, W. Melnitchouk, Y. Goto   +46 more
core   +1 more source

Up quark masses from down quark masses [PDF]

Physics Letters B, 2006
11 pages, 1 figure.
MASINA, Isabella, C. A. Savoy
openaire   +3 more sources