Measurements of Normalized Differential Cross Sections of Inclusive η Production in e+e− Annihilation at Energy from 2.0000 to 3.6710 GeV

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Measurements of Normalized Differential Cross Sections of Inclusive η Production in e+e− Annihilation at Energy from 2.0000 to 3.6710 GeV. / BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич.

In: Physical Review Letters, Vol. 133, No. 2, 021901, 12.07.2024, p. 021901.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{fcda3b1ceaaa4439a363aab3648bd955,

title = "Measurements of Normalized Differential Cross Sections of Inclusive η Production in e+e− Annihilation at Energy from 2.0000 to 3.6710 GeV",

abstract = "Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e+e-→η+X, normalized by the total cross section of e+e-→hadrons, is measured at eight center-of-mass energy points from 2.0000 to 3.6710 GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy compared to the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.",

author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",

year = "2024",

month = jul,

day = "12",

doi = "10.1103/PhysRevLett.133.021901",

language = "English",

volume = "133",

pages = "021901",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

RIS

TY - JOUR

T1 - Measurements of Normalized Differential Cross Sections of Inclusive η Production in e+e− Annihilation at Energy from 2.0000 to 3.6710 GeV

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/7/12

Y1 - 2024/7/12

N2 - Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e+e-→η+X, normalized by the total cross section of e+e-→hadrons, is measured at eight center-of-mass energy points from 2.0000 to 3.6710 GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy compared to the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.

AB - Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e+e-→η+X, normalized by the total cross section of e+e-→hadrons, is measured at eight center-of-mass energy points from 2.0000 to 3.6710 GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy compared to the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85198337979&origin=inward&txGid=fa5a4127586d9a2443894307c126fa63

UR - https://pubmed.ncbi.nlm.nih.gov/39073971/

U2 - 10.1103/PhysRevLett.133.021901

DO - 10.1103/PhysRevLett.133.021901

M3 - Article

C2 - 39073971

VL - 133

SP - 021901

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 021901

ER -

ID: 62707413