Transverse extension of partons in the proton probed in the sea-quark range by measuring the DVCS cross section

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F19%3A00508853" target="_blank" >RIV/68081731:_____/19:00508853 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/19:00331330 RIV/68407700:21340/19:00331330 RIV/00216208:11320/19:10396892 RIV/46747885:24510/19:00007425
Result on the web
<a href="https://reader.elsevier.com/reader/sd/pii/S0370269319302710?token=62B15C6035818A7299FEF7AF9000DC3B8903BBEBDECBF443FA86027D1563BC8552D36B4A19421C8E898A82CE1CE179C9" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0370269319302710?token=62B15C6035818A7299FEF7AF9000DC3B8903BBEBDECBF443FA86027D1563BC8552D36B4A19421C8E898A82CE1CE179C9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2019.04.038" target="_blank" >10.1016/j.physletb.2019.04.038</a>

Result language
angličtina
Original language name
Transverse extension of partons in the proton probed in the sea-quark range by measuring the DVCS cross section
Original language description
We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/c polarised mu(+) and mu(-) beams of the CERN SPS impinging on a liquid hydrogen target. We determine the dependence of the average of the measured mu(+) and mu(-) cross sections for deeply virtual Compton scattering on the squared four-momentum transfer t from the initial to the final proton. The slope B of the t-dependence is fitted with a single exponential function, which yields B = (4.3 +/- 0.6(stat) (+0.1)(-0.3)vertical bar(sys)) (GeV/c)(-2). This result can be converted into a transverse extension of partons in the proton,root(r(perpendicular to)(2)) = (0.58 +/- 0.04(stat) (+0.01)(-0.02)vertical bar(sys) +/- 0.04(model)) fm. For this measurement, the average virtuality of the photon mediating the interaction is < Q(2)> = 1.8 (GeV/c)(2) and the average value of the Bjorken variable is < X-Bj > = 0.056.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10304 - Nuclear physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)