K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
Электронный архив ТПУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
|
|
| Автор |
Akhunzyanov, Ruslan
Amoroso, A. Burtsev, Vitaly Evgenjevich Chumakov, Aleksandr Grigorjevich Dusaev, Renat Ramilyevich Levchenko, Evgeny Anatolievich Lyubovitskiy (Lyubovitskij), Valery Efimovich Mamon, Sergey Aleksandrovich Vasilishin, Bogdan Ivanovich |
|
| Тематика |
рассеяние
каоны виртуальные фотоны мюоны |
|
| Описание |
The K− over K+ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction z of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar 6LiD target. The regime of deep-inelastic scattering is ensured by requiring Q2>1(GeV/c)2 for the photon virtuality and W>5GeV/c2 for the invariant mass of the produced hadronic system. Kaons are identified in the momentum range from 12 GeV/c to 40 GeV/c, thereby restricting the range in Bjorken-x to 0.010.75. For very large values of z, i.e. z>0.8, we observe the kaon multiplicity ratio to fall below the lower limits expected from calculations based on leading and next-to-leading order perturbative quantum chromodynamics. Also, the kaon multiplicity ratio shows a strong dependence on the missing mass of the single-kaon production process. This suggests that within the perturbative quantum chromodynamics formalism an additional correction may be required, which takes into account the phase space available for hadronisation.
|
|
| Дата |
2020-01-23T09:34:50Z
2020-01-23T09:34:50Z 2018 |
|
| Тип |
Article
Published version (info:eu-repo/semantics/publishedVersion) Journal article (info:eu-repo/semantics/article) |
|
| Идентификатор |
K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy / R. R. Akhunzyanov [et al.] // Physics Letters B. — 2018. — Vol. 786. — [P. 390-398].
http://earchive.tpu.ru/handle/11683/57551 10.1016/j.physletb.2018.09.052 |
|
| Язык |
en
|
|
| Права |
Open access (info:eu-repo/semantics/openAccess)
|
|
| Формат |
application/pdf
|
|
| Издатель |
Томский политехнический университет
|
|
| Источник |
Physics Letters B
|
|