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Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV

Publication ,  Journal Article
Seidl, R; Abdesselam, A; Adachi, I; Aihara, H; Al Said, S; Asner, DM; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bakich, AM; Barberio, E ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
November 20, 2015

We report the first double differential cross sections of two charged pions and kaons (e+e-→hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these dihadron cross sections on the topology (same, opposite hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these dihadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These dihadron results are obtained from a 655 fb-1 data sample collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e+e-→pX) cross sections are extracted from a 159 fb-1 data subsample.

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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 20, 2015

Volume

92

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Seidl, R., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., … Nakano, E. (2015). Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(9). https://doi.org/10.1103/PhysRevD.92.092007
Seidl, R., A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, et al. “Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV.” Physical Review D - Particles, Fields, Gravitation and Cosmology 92, no. 9 (November 20, 2015). https://doi.org/10.1103/PhysRevD.92.092007.
Seidl R, Abdesselam A, Adachi I, Aihara H, Al Said S, Asner DM, et al. Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Nov 20;92(9).
Seidl, R., et al. “Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 9, Nov. 2015. Scopus, doi:10.1103/PhysRevD.92.092007.
Seidl R, Abdesselam A, Adachi I, Aihara H, Al Said S, Asner DM, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Barberio E, Bhardwaj V, Bhuyan B, Biswal J, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Dash N, Dingfelder J, DoleŽal Z, Drásal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Giordano F, Goh YM, Goldenzweig P, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, He XH, Hou WS, Hsu CL, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Joffe D, Joo KK, Kang KH, Kato E, Katrenko P, Kawasaki T, Kim DY, Kim HJ, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim YJ, Kodyš P, Korpar S, KriŽan P, Krokovny P, Kuzmin A, Kwon YJ, Lange JS, Lee DH, Li L, Li Gioi L, Libby J, Liu Y, Liventsev D, Lukin P, Masuda M, Matvienko D, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohanty S, Moll A, Moon HK, Mori T, Mussa R, Nakano E. Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Nov 20;92(9).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 20, 2015

Volume

92

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences