High Energy Physics - Phenomenology · arXiv:hep-ph/0312366 v1 · submitted 29 Dec 2003
Subleading shape function contributions to the hadronic invariant mass spectrum in B -> X_u l \nu decay
The paper says
“Using simple models for the subleading shape functions, the effects of subleading operators are estimated to be at thefew percent level for experimentally relevant cuts.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
We study the O(Lambda/mb) corrections to the singly and doubly differential hadronic invariant mass spectra d\Gamma/dsH and d\Gamma/dsH dq^2 in b -> u decays, and discuss the implications for the extraction of the CKM matrix element |Vub|. Using simple models for the subleading shape functions, the effects of subleading operators are estimated to be at thefew percent level for experimentally relevant cuts. The subleading corrections proportional to the leading shape function are larger, but largely cancel in the relation between the hadronic invariant mass spectrum and the photon spectrum in B -> X_s \gamma. We also discuss the applicability of the usual prescription of convoluting the partonic level rate with the leading light-cone wavefunction of the b quark to subleading order.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 0.65
What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.68 · human participants 0.01 · controlled comparison 0.07 · randomized assignment 0.01 · states quantitative result 0.92 · compares with prior results 0.56 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We study the O(Lambda/mb) corrections to the singly and doubly differential hadronic invariant mass spectra d\Gamma/dsH and d\Gamma/dsH dq^2 in b -> u decays, and discuss the implications for the extraction of the CKM matrix element |Vub|. | contribution 1.00 | 0.92 | 0.13 | asserted 0.86 |
| Using simple models for the subleading shape functions, the effects of subleading operators are estimated to be at thefew percent level for experimentally relevant cuts. | result 0.99 | 0.86 | 0.45 | asserted 0.65 |
| The subleading corrections proportional to the leading shape function are larger, but largely cancel in the relation between the hadronic invariant mass spectrum and the photon spectrum in B -> X_s \gamma. | result 0.95 | 0.65 | 0.15 | asserted 0.98 |
| We also discuss the applicability of the usual prescription of convoluting the partonic level rate with the leading light-cone wavefunction of the b quark to subleading order. | contribution 0.82 | 0.52 | 0.05 | unclear 0.86 |
What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 0.65
What was examined, and what was not
Sources read
- arXiv listing abstract v1
Not examined
- full text
- figures and tables
- references and citing sentences
- relations to other papers
Levels run
- P abstract
Not run
- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,791 input tokens, $0.0002 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
Cited by 3 Pith papers
Reviewed papers on Pith that cite this one. The full citation record
- Subleading Power Factorization with Radiative Functions hep-ph · May 2019
- Power corrections to B\to X_u l \nu (X_s\gamma) decay spectra in the "shape-function" region hep-ph · Nov 2004
- Subleading Shape Functions in Inclusive B Decays hep-ph · Sep 2004
How the literature uses it
1 arXiv paper cite this in 2 sentences
Papers citing it · 1 sentence without a confident label
Cites it as background 1 paper
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As noted earlier, non-local gauge invariant operators describing the coupling of soft and collinear particles have appeared in the SCET literature on subleading power corrections in $B$-physics [ref] , many of which have a similar structure to those discussed in this paper.
Subleading Power Factorization with Radiative Functions · Introduction · 0.89
Challenges and discussion
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