Abstract
Different kinematical regions of semi-inclusive deeply inelastic scattering (SIDIS) processes correspond to different underlying partonic pictures, and it is important to understand the transition between them. We find criteria in semi-inclusive deeply inelastic scattering (SIDIS) for identifying the current fragmentation region — the kinematical region where a factorization picture with fragmentation functions is appropriate, especially for studies of transverse-momentum-dependent (TMD) functions. This region is distinguished from the central (soft) and target fragmentation regions. The basis of our argument is in the errors in approximations used in deriving factorization. As compared with previous work, we show that it is essential to take account of the transverse momentum of the detected hadron, and we find a much more restricted range for genuine current fragmentation. We show that it is important to develop an extended factorization formulation to treat hadronization in the central region, as well as the current and target fragmentation regions, and to obtain a unified formalism spanning all rapidities for the detected hadron.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 245-253 |
| Number of pages | 9 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 766 |
| DOIs | |
| State | Published - Mar 10 2017 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering. / Boglione, M.; Collins, J.; Gamberg, L.; Gonzalez-Hernandez, J. O.; Rogers, T. C.; Sato, N.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 766, 10.03.2017, p. 245-253.Research output: Contribution to journal › Article
TY - JOUR
T1 - Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering
AU - Boglione, M.
AU - Collins, J.
AU - Gamberg, L.
AU - Gonzalez-Hernandez, J. O.
AU - Rogers, T. C.
AU - Sato, N.
PY - 2017/3/10
Y1 - 2017/3/10
N2 - Different kinematical regions of semi-inclusive deeply inelastic scattering (SIDIS) processes correspond to different underlying partonic pictures, and it is important to understand the transition between them. We find criteria in semi-inclusive deeply inelastic scattering (SIDIS) for identifying the current fragmentation region — the kinematical region where a factorization picture with fragmentation functions is appropriate, especially for studies of transverse-momentum-dependent (TMD) functions. This region is distinguished from the central (soft) and target fragmentation regions. The basis of our argument is in the errors in approximations used in deriving factorization. As compared with previous work, we show that it is essential to take account of the transverse momentum of the detected hadron, and we find a much more restricted range for genuine current fragmentation. We show that it is important to develop an extended factorization formulation to treat hadronization in the central region, as well as the current and target fragmentation regions, and to obtain a unified formalism spanning all rapidities for the detected hadron.
AB - Different kinematical regions of semi-inclusive deeply inelastic scattering (SIDIS) processes correspond to different underlying partonic pictures, and it is important to understand the transition between them. We find criteria in semi-inclusive deeply inelastic scattering (SIDIS) for identifying the current fragmentation region — the kinematical region where a factorization picture with fragmentation functions is appropriate, especially for studies of transverse-momentum-dependent (TMD) functions. This region is distinguished from the central (soft) and target fragmentation regions. The basis of our argument is in the errors in approximations used in deriving factorization. As compared with previous work, we show that it is essential to take account of the transverse momentum of the detected hadron, and we find a much more restricted range for genuine current fragmentation. We show that it is important to develop an extended factorization formulation to treat hadronization in the central region, as well as the current and target fragmentation regions, and to obtain a unified formalism spanning all rapidities for the detected hadron.
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U2 - 10.1016/j.physletb.2017.01.021
DO - 10.1016/j.physletb.2017.01.021
M3 - Article
AN - SCOPUS:85009964656
VL - 766
SP - 245
EP - 253
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -