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Measurement of the ...
Measurement of the running of the fine structure constant below 1 GeV with the KLOE detector
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- Anastasi, A. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.;Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy.
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- Babusci, D. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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Bencivenni, G. (author)
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Berlowski, M. (author)
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- Bloise, C. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Bossi, F. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Branchini, R. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Budano, A. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Caldeira Balkeståhl, Li (author)
- Uppsala universitet,Kärnfysik
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- Cao, Bo (author)
- Uppsala universitet,Kärnfysik
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- Ceradini, F. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Ciambrone, R. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Curciarello, F. (author)
- Ist Nazl Fis Nucl, Sez Catania, Catania, Italy.;Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy.;Novosibirsk State Univ, Novosibirsk 630090, Russia.
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- Czerwinski, E. (author)
- Jagiellonian Univ, Inst Phys, Krakow, Poland.
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- D'Agostini, G. (author)
- Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
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Dane, E. (author)
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- De Leo, V. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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De Lucia, E. (author)
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- De Santis, A. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- De Simone, R. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Di Cicco, A. (author)
- Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Di Domenico, A. (author)
- Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
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Di Salvo, R. (author)
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- Domenici, D. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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D'Uffizi, A. (author)
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- Fantini, A. (author)
- Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
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Felici, G. (author)
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- Fiore, S. (author)
- Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.;Casaccia RC, ENEA UTTMAT IRR, Rome, Italy.
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- Gajos, A. (author)
- Jagiellonian Univ, Inst Phys, Krakow, Poland.
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- Gauzzi, R. (author)
- Univ Sapienza, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
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- Giardina, G. (author)
- Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy.
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- Giovannella, S. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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Graziani, E. (author)
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- Happacher, F. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Heijkenskjöld, Lena, 1985- (author)
- Uppsala universitet,Kärnfysik
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- Johansson, Tord (author)
- Uppsala universitet,Kärnfysik
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Kaminska, D. (author)
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- Krzemien, W. (author)
- Natl Ctr Nucl Res, Warsaw, Poland.
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- Kupsc, Andrzej (author)
- Uppsala universitet,Kärnfysik
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Loffredo, S. (author)
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- Lukin, P. A. (author)
- Novosibirsk State Univ, Novosibirsk 630090, Russia.;Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
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- Mandaglio, G. (author)
- Univ Messina, Dipartimento Sci Chim Biol Farmaceut & Ambientali, Messina, Italy.;Ist Nazl Fis Nucl, Grp Collegato Messina, Messina, Italy.
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- Martini, M. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.;Univ Guglielmo Marconi, Dipartimento Sci & Tecnol Applicate, Rome, Italy.
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- Mascolo, M. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Messi, R. (author)
- Univ Tor Vergata, Dipartimento Fis, Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
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- Miscetti, S. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Morello, G. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Moricciani, D. (author)
- Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy.
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Moskal, R. (author)
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Papenbrock, M. (author)
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- Passeri, A. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Patera, V. (author)
- Univ Sapienza, Dipartimento Sci Base & Applicate Ingn, Rome, Italy.
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- del Rio, E. Perez (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Ranieri, A. (author)
- Ist Nazl Fis Nucl, Sez Bari, Bari, Italy.
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- Santangelo, R. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Sarra, I. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Schioppa, M. (author)
- Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy.;Ist Nazl Fis Nucl, Grp Collegato Cosenza, Arcavacata Di Rende, Italy.
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- Selce, A. (author)
- Univ Roma Tre, Dipartimento Matemat & Fis, Rome, Italy.
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- Silarski, M. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Sirghi, F. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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- Tortora, L. (author)
- Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy.
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- Venanzoni, G. (author)
- Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy.
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Wislicki, W. (author)
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Wolke, M. (author)
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- Jegerlehner, F. (author)
- Uppsala universitet,Kärnfysik,Humboldt Univ, Inst Phys, Berlin, Germany.;Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany.
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Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy;Univ Messina, Dipartimento Sci Matemat & Informat, Sci Fis & Sci Terra, Messina, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy. (creator_code:org_t)
- ELSEVIER SCIENCE BV, 2017
- 2017
- English.
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In: Physics Letters B. - : ELSEVIER SCIENCE BV. - 0370-2693 .- 1873-2445. ; 767, s. 485-492
- Related links:
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- We have measured the running of the effective QED coupling constant alpha(s) in the time-like region 0.6 < root s < 0.975 GeV with the KLOE detector at DA Phi NE using the Initial-State Radiation process e(+) e(-) -> mu(+) mu(-)gamma. It represents the first measurement of the running of alpha(s) in this energy region. Our results show a more than 5 sigma significance of the hadronic contribution to the running of alpha(s), which is the strongest direct evidence both in time- and space-like regions achieved in a single measurement. By using the e(+) e(-) -> pi(+) pi(-) cross section measured by KLOE, the real and imaginary parts of the shift Delta alpha(s) have been extracted. From a fit of the real part of Delta alpha(s) and assuming the lepton universality the branching ratio BR(omega -> mu(+) mu(-)) = (6.6 +/- 1.4(stat) +/- 1.7(syst)) (.) 10 (5)has been determined.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Vacuum polarization
- arunning
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Anastasi, A.
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Babusci, D.
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Bencivenni, G.
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Berlowski, M.
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Bloise, C.
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Bossi, F.
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Branchini, R.
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Budano, A.
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Caldeira Balkest ...
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Cao, Bo
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Ceradini, F.
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Ciambrone, R.
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Curciarello, F.
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Czerwinski, E.
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D'Agostini, G.
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Dane, E.
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De Leo, V.
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De Lucia, E.
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De Santis, A.
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De Simone, R.
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Di Cicco, A.
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Di Domenico, A.
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Di Salvo, R.
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Domenici, D.
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D'Uffizi, A.
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Fantini, A.
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Felici, G.
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Fiore, S.
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Gajos, A.
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Gauzzi, R.
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Giardina, G.
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Giovannella, S.
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Graziani, E.
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Happacher, F.
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Heijkenskjöld, L ...
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Johansson, Tord
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Kaminska, D.
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Krzemien, W.
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Kupsc, Andrzej
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Loffredo, S.
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Lukin, P. A.
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Mandaglio, G.
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Martini, M.
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Mascolo, M.
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Messi, R.
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Miscetti, S.
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Morello, G.
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Moricciani, D.
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Moskal, R.
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Papenbrock, M.
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Passeri, A.
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Patera, V.
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del Rio, E. Pere ...
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Ranieri, A.
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Santangelo, R.
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Sarra, I.
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Schioppa, M.
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Selce, A.
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Silarski, M.
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Sirghi, F.
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Tortora, L.
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Venanzoni, G.
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Wislicki, W.
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Wolke, M.
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Jegerlehner, F.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Physics Letters ...
- By the university
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Uppsala University