WEAK ANNIHILATION TOPOLOGIES AND FINAL STATE INTERACTIONS IN $B^+ \rightarrow D^+_s\phi$ DECAY

2012 ◽  
Vol 27 (11) ◽  
pp. 1250064 ◽  
Author(s):  
BEHNAM MOHAMMADI ◽  
HOSSEIN MEHRABAN
Keyword(s):  
Final State Interaction ◽  
Absorptive Part ◽  
Branching Ratio ◽  
State Interaction ◽  
Hadronic Decay ◽  
Final State ◽  
Qcd Factorization ◽  
Intermediate States ◽  
Final State Interactions ◽  
Weak Annihilation

In this research, the hadronic decay of [Formula: see text] is analyzed by using "QCD factorization" (QCDF) method and final state interaction (FSI). First, the [Formula: see text] decay is calculated via QCDF method and only the annihilation graphs exist in that method. Then, FSI is considered to solve the [Formula: see text] decay as a sizable correction and the D+*K0, D0*K+ and [Formula: see text] via the exchange of [Formula: see text], K-(*) and [Formula: see text] mesons are chosen for the intermediate states. To estimate the intermediate states amplitudes, QCDF method is again used. These amplitudes are used in the absorptive part of the diagrams. The experimental branching ratio of [Formula: see text] decay is less than 1.9×10-6 and our results according to QCDF method and FSI effects are 0.16×10-6 and 1.86×10-6, respectively.

Analysis of B0 → Ds−∗K+ decay

2015 ◽  
Vol 30 (36) ◽  
pp. 1550222
Author(s):  
Amin Asadi ◽  
Hossein Mehraban
Keyword(s):  
Vector Meson ◽  
Pseudoscalar Meson ◽  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Final States ◽  
Final State ◽  
Phenomenological Parameter ◽  
Qcd Factorization ◽  
Intermediate States

In this paper, we analyzed the decay [Formula: see text] within QCD factorization (QCDF) and final state interaction (FSI) methods. At first, we consider the QCDF approach, where the final states are a pseudoscalar meson and vector meson. Then, we consider the FSI method where the intermediate states are [Formula: see text] and [Formula: see text] via the exchange of [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] to improve the branching ratio. The above intermediate states are calculated by using the QCDF method. In the FSI effects, the results of our calculations depend on [Formula: see text] as the phenomenological parameter. The experimental branching ratio of this decay is [Formula: see text]. Our results in QCDF approach is [Formula: see text], and with [Formula: see text], the improved branching ratio is [Formula: see text].

Final state interaction effects in B+→Ds*+ ϕ decay

2014 ◽  
Vol 92 (11) ◽  
pp. 1400-1404
Author(s):  
Hossein Mehraban ◽  
Amin Asadi
Keyword(s):  
Final State Interaction ◽  
Branching Ratio ◽  
Interaction Effects ◽  
State Interaction ◽  
Experimental Result ◽  
Final State ◽  
Qcd Factorization ◽  
Intermediate States ◽  
Exclusive Decay

In this article the exclusive decay of [Formula: see text] is calculated using the QCD factorization (QCDF) method and final state interaction (FSI). First, the [Formula: see text] decay is calculated via the QCDF method and only the annihilation graphs exist in that method. The result found using the QCDF method is lower than the experimental result. FSI is considered to solve the [Formula: see text] decay. For this decay, D+K0, D0K+, and [Formula: see text] via the exchange of K0, K+, and [Formula: see text] are chosen for the intermediate states and we calculate B+ → D+K0 → [Formula: see text] decay. The amplitude of B+ → D+K0 decay is calculated using the QCDF method again. The experimental branching ratio of [Formula: see text] decay is less than 1.2 × 10−5 and our results calculated using the QCDF method and FSI are (0.4 ± 0.06) × 10−7 and (0.93 ± 0.08) × 10−5, respectively.

scholarly journals Final State Interaction Effects on theB+→J/ψρ+Decay

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Behnam Mohammadi ◽  
Hossein Mehraban
Keyword(s):  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Experimental Result ◽  
Final State ◽  
Qcd Factorization ◽  
Intermediate States ◽  
Quark Diagram ◽  
Exclusive Decay

The exclusive decay ofB+→J/ψρ+is studied in the framework of the QCD factorization (QCDF) method and final state interaction (FSI). A directB+→J/ψρ+decay is only occurred via a tree and a penguin based on the quark diagram analysis. The result that is found by using the QCDF method is less than the experimental result, so, the role of FSI is considered. The intermediate statesD+D̅0,D+*D̅0*,D+*D̅0, andD+D̅0*via the exchange ofD-andD-*are contributed to theB+→J/ψρ+decay. The above intermediate states is calculated by using the QCDF method. In the FSI effects the results of our calculations depend on “η” as the phenomenological parameter. The range of this parameter are selected from 1 to 2. For the exchanged particlesD-andD-*, it is found that ifη=1.58~1.83is selected the numbers of the branching ratio are placed in the experimental range. The experimental branching ratio ofB+→J/ψρ+decay is(5±0.8)×10-5, and our prediction number is(1.42±0.36)×10-5in the absence of FSI effects, and it becomes(4.2~5.8)×10-5when FSI contributions are taken into account.

Final state interaction effect in the pure annihilation B→ϕϕ decay

2015 ◽  
Vol 93 (11) ◽  
pp. 1235-1239
Author(s):  
Mohammad Rahim Talebtash ◽  
Hossein Mehraban
Keyword(s):  
Quantum Chromodynamics ◽  
Interaction Effect ◽  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Final State ◽  
Intermediate States

We analyzed the process of [Formula: see text] decay in quantum chromodynamics factorization (QCDF) and final state interaction (FSI). In QCDF for this decay we have only the annihilation graph and we expected small branching ratio. Then we considered FSI effect as a sizable correction where the intermediate states are [Formula: see text], K+ K–, and [Formula: see text] mesons. To consider the amplitudes of these intermediate states, the QCDF approach was used. The experimental branching ratio of [Formula: see text] is less than 2 × 10–7 and our results are 0.04 × 10–7 and 1.54 × 10–7 from QCDF and FSI, respectively.

Analysis of the Bs → K∓∗K± decay

2016 ◽  
Vol 31 (14n15) ◽  
pp. 1650079
Author(s):  
Amin Asadi ◽  
Hossein Mehraban
Keyword(s):  
Intermediate State ◽  
Final State Interaction ◽  
Branching Ratio ◽  
State Interaction ◽  
Experimental Result ◽  
Final State ◽  
Qcd Factorization ◽  
State Formula

In this paper, we analyzed the process of [Formula: see text] decay within QCD factorization (QCDF) and final state interaction (FSI) effects. At first, the [Formula: see text] decay is calculated via QCDF approach. The result that is found by using the QCDF method is less than the experimental result. Then we considered FSI effect as a sizable correction where there are the intermediate state [Formula: see text] mesons via the exchange of [Formula: see text]. The experi mental branching ratio of [Formula: see text] decay is [Formula: see text], and our results by QCDF and FSI are [Formula: see text] and [Formula: see text], respectively.

Branching fractions of Bc+ decays to two vector charm mesons

2020 ◽  
Vol 35 (19) ◽  
pp. 2050093
Author(s):  
Behnam Mohammadi
Keyword(s):  
Strong Interaction ◽  
Final State Interaction ◽  
Branching Fractions ◽  
Branching Ratio ◽  
Form Factors ◽  
State Interaction ◽  
Charm Mesons ◽  
Final State ◽  
Phenomenological Parameter ◽  
Intermediate States

In this paper the decays of [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] have been investigated. The available experimental results for these decays are (in units of [Formula: see text]): [Formula: see text] By applying the theoretical value of the [Formula: see text] that span the range of [Formula: see text], the results for QCDF approach are about [Formula: see text] times smaller than experimental one. Therefore, it is decided to calculate the theoretical branching ratio by applying the final state interaction (FSI) through the [Formula: see text] (crossed and uncrossed) channels. The FSI effects are very sensitive to the changes in the phenomenological parameter [Formula: see text]. This parameter appears in the FSI form factors that increase strong interaction share. In most calculation changing two units in this parameter, makes the final result multiply in the branching ratio, therefore the decision to use FSI is not unexpected. In this study there are thirteen intermediate states for [Formula: see text] decay, fifteen intermediate states for [Formula: see text] decay and four intermediate states for [Formula: see text] and [Formula: see text] decays, in which the contribution of each one is calculated and summed in the final amplitude. Considering [Formula: see text] and fixing [Formula: see text] between four and five acceptable results have been obtained.

NONRESONANT HADRON-HADRON INTERACTIONS AND FINAL STATE INTERACTIONS IN THE π-η SYSTEM

2003 ◽  
Vol 18 (03) ◽  
pp. 405-410
Author(s):  
Adam Szczepaniak
Keyword(s):  
Interaction Effect ◽  
Final State Interaction ◽  
State Interaction ◽  
Final State ◽  
Exotic Mesons ◽  
Exotic Meson ◽  
Experimental Status ◽  
Final State Interactions

We discuss the current theoretical and experimental status of exotic mesons and a possible interpretation of the π1(1400) exotic meson as a final state interaction effect.

scholarly journals Coulomb Final State Interaction in Heavy Ion Collisions for Lévy Sources

Universe ◽  
2019 ◽  
Vol 5 (6) ◽  
pp. 133 ◽  
Author(s):  
Máté Csanád ◽  
Sándor Lökös ◽  
Márton Nagy
Keyword(s):  
Coulomb Interaction ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Final State Interaction ◽  
Heavy Ion ◽  
High Energy ◽  
State Interaction ◽  
Final State ◽  
Ion Collisions ◽  
Final State Interactions

Investigation of momentum space correlations of particles produced in high energy reactions requires taking final state interactions into account, a crucial point of any such analysis. Coulomb interaction between charged particles is the most important such effect. In small systems like those created in e + e - - or p + p collisions, the so-called Gamow factor (valid for a point-like particle source) gives an acceptable description of the Coulomb interaction. However, in larger systems such as central or mid-central heavy ion collisions, more involved approaches are needed. In this paper we investigate the Coulomb final state interaction for Lévy-type source functions that were recently shown to be of much interest for a refined description of the space-time picture of particle production in heavy-ion collisions.

scholarly journals Nuclear final-state interactions in deep inelastic scattering off the lightest nuclei

2017 ◽  
Vol 26 (09) ◽  
pp. 1730004 ◽  
Author(s):  
W. Cosyn ◽  
M. Sargsian
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Final State Interaction ◽  
State Interaction ◽  
Recent Experimental Data ◽  
Final States ◽  
Deuteron Target ◽  
Final State ◽  
Final State Interactions ◽  
High Degree

We review recent progress in studies of nuclear final-state interactions in deep inelastic scattering (DIS) off the lightest nuclei tagged by a recoil nucleon. These processes hold a lot of potential for resolving the outstanding issues related to the dynamics of hadronization in QCD. Within the minimal Fock component framework, valid at large Bjorken [Formula: see text], the main features of the theoretical approach based on the virtual nucleon approximation are elaborated. In this approach, the strong final-state interaction of the DIS products with the nuclear fragments is described by an effective eikonal amplitude, whose parameters can be extracted from the analysis of semi-inclusive DIS off the deuteron target. The extraction of the [Formula: see text] and [Formula: see text] mass dependences of these parameters gives a new observable in studying the QCD structure of DIS final states. Another important feature of tagged DIS off the lightest nuclei is the possibility of performing pole extrapolation with a high degree of accuracy. Such extrapolation allows an extraction of the neutron structure function in a model independent way due to suppression of the final-state interaction in the on-shell limit of the struck nucleon propagator. We review the first application of the pole extrapolation to recent experimental data. Finally, we outline the extension of the framework to inclusive DIS, including a polarized deuteron target as well as its application to the tagged DIS reactions for future experiments at fixed target and collider energies.

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