Detecting the polarization in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>χ</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mi>J</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">→</mml:mo><mml:mi>ϕ</mml:mi><mml:mi>ϕ</mml:mi></mml:math> decays to probe hadronic loop effect
نویسندگان
چکیده
In this work, we show that detecting the polarization information of ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}(J=0,1,2)$ could be a practical way to test hadronic loop effect in these decays. Our results predicted ratios helicity amplitudes are less dependent on parameters involved calculation. The determined $|{F}_{1,1}^{(0)}/{F}_{0,0}^{(0)}|\ensuremath{\approx}0.359$, $|{F}_{1,0}^{(1)}/{F}_{0,1}^{(1)}|=1$, $|{F}_{1,1}^{(1)}/{F}_{0,1}^{(1)}|=0$, $|{F}_{1,0}^{(2)}|/|{F}_{0,0}^{(2)}|=|{F}_{0,1}^{(2)}|/|{F}_{0,0}^{(2)}|\ensuremath{\approx}1.285$, $|{F}_{1,\ensuremath{-}1}^{(2)}|/|{F}_{0,0}^{(2)}|=|{F}_{\ensuremath{-}1,1}^{(2)}|/|{F}_{0,0}^{(2)}|\ensuremath{\approx}5.110$, and $|{F}_{\ensuremath{-}1,\ensuremath{-}1}^{(2)}|/|{F}_{0,0}^{(2)}|=|{F}_{1,1}^{(2)}|/|{F}_{0,0}^{(2)}|\ensuremath{\approx}0.465$. By adopting ratios, use Monte Carlo events moments $⟨{t}_{ij}⟩$ can used as observables reveal transfer decays, their distributions directly related determination amplitudes. We suggest experiments like at BESIII Belle II performing analysis ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}$ decay future, important understand mechanism underlying ${\ensuremath{\chi}}_{cJ}$
منابع مشابه
Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied thro...
متن کاملHadronic Decays from the Lattice
We discuss strategies to determine hadronic decay couplings from lattice studies. As an application, we explore the decay of a vector meson to two pseudoscalar mesons with Nf = 2 flavours of sea quark. Although we are working with quark masses that do not allow a physical decay, we show how the transition rate can be evaluated from the amplitude for ρ→ ππ and from the annihilation component of ...
متن کاملHadronic B Decays in PQCD
B factory experiments have accumulated a lot of data and have reported many interesting results [1]. Some observables, mixing-induced CP asymmetries for b → s penguin modes, branching ratios and direct CP asymmetries for B → πK and ππ, and polarization fractions for penguin-dominated B → V V modes, have exhibited some deviations from näıve expectations in the Standard Model. It is necessary to ...
متن کاملHadronic Charm Decays in Cleo
We present several results on hadronic D meson decays. We report on results from the scan of the energy region from 3970 MeV to 4260 MeV, which was used to determine an optimal energy to carry out the Ds physics program of CLEO-c. Improved measurements of inclusive and exclusive D and Ds branching fractions are presented. We also show results on Dalitz analyses of D+ → π+π−π+ using CLEO-c data ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.103.096006