Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors
We analyze the pion electromagnetic, charged-current, and πγπγ\pi\gamma transition form factors at timelike momentum transfers q, q2=s≤1.4q2=s≤1.4q^2 = s\le 1.4 GeV2, using a dispersion approach. We discuss in detail the propagator matrix of the photon-vector meson system and define certain reduced...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
23 March 2004
|
| In: |
The European physical journal. C, Particles and fields
Year: 2004, Volume: 34, Issue: 3, Pages: 345-360 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s2004-01726-4 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1140/epjc/s2004-01726-4 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1140/epjc/s2004-01726-4 
|
| Author Notes: | D. Melikhov, O. Nachtmann, V. Nikonov, T. Paulus |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1570581398 | ||
| 003 | DE-627 | ||
| 005 | 20220814085404.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 180307s2004 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1140/epjc/s2004-01726-4 |2 doi | |
| 035 | |a (DE-627)1570581398 | ||
| 035 | |a (DE-576)500581398 | ||
| 035 | |a (DE-599)BSZ500581398 | ||
| 035 | |a (OCoLC)1340992760 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Melikhov, Dmitri |d 1960- |e VerfasserIn |0 (DE-588)1154442969 |0 (DE-627)1015733522 |0 (DE-576)500581290 |4 aut | |
| 245 | 1 | 0 | |a Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors |c D. Melikhov, O. Nachtmann, V. Nikonov, T. Paulus |
| 246 | 3 | 0 | |a pi gamma |
| 264 | 1 | |c 23 March 2004 | |
| 300 | |a 16 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 07.03.2018 | ||
| 520 | |a We analyze the pion electromagnetic, charged-current, and πγπγ\pi\gamma transition form factors at timelike momentum transfers q, q2=s≤1.4q2=s≤1.4q^2 = s\le 1.4 GeV2, using a dispersion approach. We discuss in detail the propagator matrix of the photon-vector meson system and define certain reduced amplitudes, or vertex functions, describing the coupling of this system to final states. We then apply the derived analytic expressions to the analysis of the recent e+e−→π+π−e+e−→π+π−e^ + e^-\to \pi^ + \pi^-, τ−→π−π0νττ−→π−π0ντ\tau^-\to \pi^-\pi^0\nu_\tau, and e+e−→π0γe+e−→π0γe^ + e^-\to \pi^0\gamma data. We find the reduced amplitudes for the coupling of the photon and vector mesons to two pseudoscalars to be constant, independent of s, in the range considered, indicating a “freezing” of the amplitudes for s≤1s≤1s\le 1 GeV. The fit to the form factor data leads to the following values of the Breit-Wigner resonance masses mρ−=775.3±0.8mρ−=775.3±0.8m_{\rho^-} = 775.3\pm 0.8 MeV, mρ0=773.8±0.6mρ0=773.8±0.6m_{\rho^0} = 773.8\pm 0.6 MeV and mω=782.43±0.05mω=782.43±0.05m_\omega = 782.43\pm 0.05 MeV, where the errors are only statistical. | ||
| 700 | 1 | |a Nachtmann, Otto |d 1942- |e VerfasserIn |0 (DE-588)1063321131 |0 (DE-627)811566234 |0 (DE-576)421841877 |4 aut | |
| 700 | 1 | |a Paulus, Timo |d 1972- |e VerfasserIn |0 (DE-588)1154443949 |0 (DE-627)1015735010 |0 (DE-576)185885217 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The European physical journal. C, Particles and fields |d Berlin : Springer, 1998 |g 34(2004), 3, Seite 345-360 |h Online-Ressource |w (DE-627)253722934 |w (DE-600)1459069-4 |w (DE-576)072372664 |x 1434-6052 |7 nnas |a Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors |
| 773 | 1 | 8 | |g volume:34 |g year:2004 |g number:3 |g pages:345-360 |g extent:16 |a Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1140/epjc/s2004-01726-4 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |
| 856 | 4 | 0 | |u https://link.springer.com/article/10.1140/epjc/s2004-01726-4 |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20180307 | ||
| 993 | |a Article | ||
| 994 | |a 2004 | ||
| 998 | |g 1154443949 |a Paulus, Timo |m 1154443949:Paulus, Timo |d 130000 |d 130300 |e 130000PP1154443949 |e 130300PP1154443949 |k 0/130000/ |k 1/130000/130300/ |p 4 |y j | ||
| 998 | |g 1063321131 |a Nachtmann, Otto |m 1063321131:Nachtmann, Otto |d 130000 |d 130300 |e 130000PN1063321131 |e 130300PN1063321131 |k 0/130000/ |k 1/130000/130300/ |p 2 | ||
| 998 | |g 1154442969 |a Melikhov, Dmitri |m 1154442969:Melikhov, Dmitri |d 130000 |d 130300 |e 130000PM1154442969 |e 130300PM1154442969 |k 0/130000/ |k 1/130000/130300/ |p 1 |x j | ||
| 999 | |a KXP-PPN1570581398 |e 3001987405 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"id":{"doi":["10.1140/epjc/s2004-01726-4"],"eki":["1570581398"]},"origin":[{"dateIssuedDisp":"23 March 2004","dateIssuedKey":"2004"}],"name":{"displayForm":["D. Melikhov, O. Nachtmann, V. Nikonov, T. Paulus"]},"relHost":[{"disp":"Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factorsThe European physical journal. C, Particles and fields","note":["Gesehen am 24.09.14"],"type":{"bibl":"periodical","media":"Online-Ressource"},"recId":"253722934","language":["eng"],"pubHistory":["1.1998 -"],"titleAlt":[{"title":"The European physical journal / C"}],"part":{"year":"2004","issue":"3","pages":"345-360","volume":"34","text":"34(2004), 3, Seite 345-360","extent":"16"},"title":[{"partname":"Particles and fields","title":"The European physical journal","title_sort":"European physical journal"}],"physDesc":[{"extent":"Online-Ressource"}],"origin":[{"publisherPlace":"Berlin ; Heidelberg","dateIssuedDisp":"1998-","publisher":"Springer","dateIssuedKey":"1998"}],"id":{"zdb":["1459069-4"],"eki":["253722934"],"issn":["1434-6052"]}}],"physDesc":[{"extent":"16 S."}],"title":[{"title_sort":"Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors","title":"Masses and couplings of vector mesonsfrom the pion electromagnetic, weak, and πγ transition form factors"}],"person":[{"roleDisplay":"VerfasserIn","display":"Melikhov, Dmitri","role":"aut","family":"Melikhov","given":"Dmitri"},{"roleDisplay":"VerfasserIn","display":"Nachtmann, Otto","role":"aut","family":"Nachtmann","given":"Otto"},{"family":"Paulus","given":"Timo","roleDisplay":"VerfasserIn","display":"Paulus, Timo","role":"aut"}],"language":["eng"],"recId":"1570581398","note":["Gesehen am 07.03.2018"],"type":{"bibl":"article-journal","media":"Online-Ressource"}} | ||
| SRT | |a MELIKHOVDMMASSESANDC2320 | ||